20-F/A

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 20-F/A

(Amendment No. 1)

☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934

OR

☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended: December 31, 2017

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from N/A to N/A

OR

☐ SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Date of event requiring this shell company report

Commission file number 1-13882

TIM S.p.A.

(Exact name of Registrant as specified in its charter)

Italy

(Jurisdiction of incorporation or organization)

Via Gaetano Negri 1, 20123 Milan, Italy

(Address of principal executive offices)

Piergiorgio PELUSO

Head of Administration, Finance and Control

TIM S.p.A.

Corso d’Italia, 41, 00198 Rome, Italy

+39.06.36.88.1

piergiorgio.peluso@telecomitalia.it

(Name, Telephone, E-mail and/or Facsimile number and Address of Company Contact Person)

Securities registered or to be registered pursuant to Section 12(b) of the Act:

Title of each class	Name of each exchange on which registered
American Depositary Shares, each representing 10 Ordinary Shares (the “Ordinary Share ADSs”)	The New York Stock Exchange
Ordinary Shares (the “Ordinary Shares”)	The New York Stock Exchange*
American Depositary Shares, each representing 10 Savings Shares (the “Savings Share ADSs”)	The New York Stock Exchange
Savings Shares (the “Savings Shares”)	The New York Stock Exchange*
Guarantee of Guaranteed Senior Notes due 2018 of Telecom Italia Capital S.A.	The New York Stock Exchange**
Guarantee of Guaranteed Senior Notes due 2019 of Telecom Italia Capital S.A.	The New York Stock Exchange**
Guarantee of Guaranteed Senior Notes due 2033 of Telecom Italia Capital S.A.	The New York Stock Exchange**
Guarantee of Guaranteed Senior Notes due 2034 of Telecom Italia Capital S.A.	The New York Stock Exchange**
Guarantee of Guaranteed Senior Notes due 2036 of Telecom Italia Capital S.A.	The New York Stock Exchange**
Guarantee of Guaranteed Senior Notes due 2038 of Telecom Italia Capital S.A.	The New York Stock Exchange**

Securities registered or to be registered pursuant to Section 12(g) of the Act:

None

(Title of Class)

Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act:

None

(Title of Class)

Indicate the number of outstanding shares of each of the issuer’s classes of capital or common stock

as of the close of the period covered by the annual report.

Ordinary Shares 15,203,122,583

Savings Shares 6,027,791,699

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act    Yes  ☒    No  ☐

If this report is an annual or transition report, indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934.    Yes  ☐    No  ☒

Note—Checking the box above will not relieve any registrant required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 from their obligations under those Sections.

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ☒    No  ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  ☒    No  ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of “accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer  ☒             Accelerated filer  ☐            Non-accelerated filer  ☐            Emerging growth company  ☐

If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards† provided pursuant to Section 13(a) of the Exchange Act.  ☐

Indicate by check mark which basis of accounting the registrant has used to prepare the financial statement included in this filing:

U.S. GAAP  ☐                International Financial Reporting Standards as issued by the International Accounting Standards Board  ☒            Other  ☐

If “Other” has been checked in response to the previous question indicate by check mark which financial statements item the registrant has elected to follow    Item 17  ☐    Item 18  ☐

If this is an annual report, indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ☐    No  ☒

* Not for trading, but only in connection with the registration of American Depositary Shares representing such Ordinary Shares or Savings Shares, as the case may be, pursuant to the requirements of the Securities and Exchange Commission.

** Not for trading, but only in connection with the registration of the corresponding Guaranteed Senior Notes of Telecom Italia Capital S.A. (a wholly-owned subsidiary of TIM S.p.A.).

† The term “new or revised financial accounting standard” refers to any update issued by the Financial Accounting Standards Board to its Accounting Standards Codification after April 5, 2012.

Explanatory Note

Amendment No. 1 to the Annual Report on Form 20-F of TIM S.p.A (“TIM”) amends TIM’s Annual Report on Form 20-F for the year ended December 31, 2017 (the “Original 20-F”), which was filed with the Securities and Exchange Commission on April 16, 2018. TIM is filing this Amendment No. 1 solely to furnish the Interactive Data File as Exhibit 101 in accordance with Rule 405 of Regulation S-T, which was not included in the Original 20-F. Exhibit 101 includes information in eXtensible Business Reporting Language (XBRL).

Except as described above, this Amendment No. 1 does not amend any information set forth in the Original 20-F, and TIM has not updated disclosures included therein to reflect any events that occurred subsequent to April 16, 2018.

Pursuant to Rule 406T of Regulation S-T, these interactive data files are deemed furnished and not filed or part of a registration statement or prospectus for purposes of Sections 11 or 12 of the Securities Act of 1933, as amended, and are deemed not filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and are otherwise not subject to liability under those sections.

PART III

ITEM 19. EXHIBITS

The following is a list of exhibits filed as part of this Amendment No. 1 to TIM’s Annual Report on Form 20-F:

101.INS* XBRL Instance Document

101.SCH* XBRL Taxonomy Extension Schema Document

101.CAL* XBRL Taxonomy Extension Calculation Linkbase Document

101.DEF* XBRL Taxonomy Extension Definition Linkbase Document

101.LAB* XBRL Taxonomy Extension Label Linkbase Document

101.PRE* XBRL Taxonomy Extension Presentation Linkbase Document

* In accordance with Rule 406T(b)(2) of Regulation S-T, this eXtensible Business Reporting Language (XBRL) information is furnished and not filed or part of a registration statement or prospectus for purposes of Sections 11 or 12 of the Securities Act of 1933, as amended, is deemed not filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and otherwise is not subject to liability under those sections.

SIGNATURE

The registrant hereby certifies that it meets all of the requirements for filing on Form 20-F and that it has duly caused and authorized the undersigned to sign this Amendment No. 1 to the Annual Report on Form 20-F on its behalf.

TIM S.p.A
By:	/s/    Amos Genish
Name:	Amos Genish
Title:	Chief Executive Officer

Dated April 23, 2018

XML

Document and Entity Information	12 Months Ended
	Dec. 31, 2017 shares
Document - Document and Entity Information [Abstract]
Document Type	20-F/A
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	FY
Trading Symbol	TI
Entity Registrant Name	TIM S.p.A.
Entity Central Index Key	0000948642
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	15,203,122,583

XML

Consolidated Statements of Financial Position - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Intangible assets
Goodwill	€ 29,462	€ 29,612
Intangible assets with a finite useful life	7,192	6,951
Intangible assets and goodwill	36,654	36,563
Tangible assets
Property, plant and equipment owned	14,216	13,947
Assets held under finance leases	2,331	2,413
Tangible assets	16,547	16,360
Other non-current assets
Investments in associates and joint ventures accounted for using the equity method	17	18
Other investments	51	46
Non-current financial assets	1,768	2,698
Miscellaneous receivables and other non-current assets	2,422	2,222
Deferred tax assets	993	877
Other non current assets	5,251	5,861
TOTAL NON-CURRENT ASSETS (A)	58,452	58,784
CURRENT ASSETS
Inventories	290	270
Trade and miscellaneous receivables and other current assets	4,959	5,426
Current income tax receivables	77	94
Current financial assets
Securities other than investments, financial receivables and other current financial assets	1,430	1,908
Cash and cash equivalents	3,575	3,964
Current financial assets	5,005	5,872
Current assets sub-total	10,331	11,662
Discontinued operations /Non-current assets held for sale
of a financial nature	0	0
of a non-financial nature	0	0
TOTAL CURRENT ASSETS (B)	10,331	11,662
TOTAL ASSETS	68,783	70,446
EQUITY
Share capital issued	11,677	11,677
Less: treasury shares	(90)	(90)
Share capital	11,587	11,587
Additional paid-in capital	2,094	2,094
Other reserves and retained earnings (accumulated losses), including profit (loss) for the year	7,876	7,526
Equity attributable to owners of the Parent	21,557	21,207
Non-controlling interests	2,226	2,346
TOTAL EQUITY (A)	23,783	23,553
NON-CURRENT LIABILITIES
Non-current financial liabilities	28,108	30,469
Employee benefits	1,736	1,355
Deferred tax liabilities	265	293
Provisions	825	830
Miscellaneous payables and other non-current liabilities	1,678	1,607
TOTAL NON-CURRENT LIABILITIES (B)	32,612	34,554
CURRENT LIABILITIES
Current financial liabilities	4,756	4,056
Trade and miscellaneous payables and other current liabilities	7,520	7,646
Current income tax payables	112	637
Current liabilities sub-total	12,388	12,339
Liabilities directly associated with Discontinued operations/Non-current assets held for sale
of a financial nature	0	0
of a non-financial nature	0	0
TOTAL CURRENT LIABILITIES (C)	12,388	12,339
TOTAL LIABILITIES (D=B+C)	45,000	46,893
TOTAL EQUITY AND LIABILITIES (A+D)	€ 68,783	€ 70,446

XML

Separate Consolidated Income Statements - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Profit or loss [abstract]
Revenues	€ 19,828	€ 19,025	€ 19,719
Other income	523	311	287
Total operating revenues and other income	20,351	19,336	20,006
Acquisition of goods and services	(8,388)	(7,793)	(8,532)
Employee benefits expenses	(3,626)	(3,106)	(3,589)
Other operating expenses	(1,208)	(1,083)	(1,491)
Change in inventories	35	9	(44)
Internally generated assets	626	639	656
Depreciation and amortization	(4,473)	(4,291)	(4,135)
Gains (losses) on disposals of non-current assets	11	14	336
Impairment reversals (losses) on non-current assets	(37)	(3)	(244)
Operating profit (loss)	3,291	3,722	2,963
Share of profits (losses) of associates and joint ventures accounted for using the equity method	(1)	(23)	1
Other income (expenses) from investments	(18)	7	10
Finance income	1,808	2,543	2,760
Finance expenses	(3,303)	(3,450)	(5,281)
Profit (loss) before tax from continuing operations	1,777	2,799	453
Income tax expense	(490)	(880)	(403)
Profit (loss) from continuing operations	1,287	1,919	50
Profit (loss) from Discontinued operations/Non-current assets held for sale		47	611
Profit (loss) for the year	1,287	1,966	661
Owners of the Parent	1,121	1,808	(70)
Non-controlling interests	166	158	731
Profit (loss) for the year	€ 1,287	€ 1,966	€ 661
Basic and Diluted Earnings Per Share (EPS)(*)
Ordinary Share	€ 0.05	€ 0.08
Savings Share	0.06	0.09
From continuing operations attributable to Owners of the Parent
Ordinary Share	0.05	0.08	€ (0.01)
Savings Share	€ 0.06	€ 0.09	€ (0.01)

XML

Consolidated Statements of Comprehensive Income - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statement of comprehensive income [abstract]
Profit (loss) for the year	€ 1,287	€ 1,966	€ 661
Remeasurements of employee defined benefit plans (IAS19):
Actuarial gains (losses)	10	(33)	16
Income tax effect	(1)	7	(7)
Re-measurements of employees defined benefit plans, net of tax	9	(26)	9
Share of other comprehensive income (loss) of associates and joint ventures accounted for using the equity method:
Profit (loss)	0	0	0
Income tax effect	0	0	0
Share of other comprehensive income of associates	0	0	0
Total other components that will not be reclassified subsequently to Separate Consolidated Income Statement	9	(26)	9
Available-for-sale financial assets:
Profit (loss) from fair value adjustments	63	46	(4)
Loss (profit) transferred to Separate Consolidated Income Statement	(62)	(37)	(57)
Income tax effect	2	(2)	18
Available-for-sale financial assets, net of tax	3	7	(43)
Hedging instruments:
Profit (loss) from fair value adjustments	(854)	(312)	1,536
Loss (profit) transferred to Separate Consolidated Income Statement	826	(80)	(983)
Income tax effect	(3)	90	(165)
Hedging instruments, net of tax	(31)	(302)	388
Exchange differences on translating foreign operations:
Profit (loss) on translating foreign operations	(830)	852	(2,129)
Loss (profit) on translating foreign operations transferred to Separate Consolidated Income Statement	19	304	(1)
Income tax effect	0	0	0
Exchange differences on translating foreign operations, net of tax	(811)	1,156	(2,130)
Share of other comprehensive income (loss) of associates and joint ventures accounted for using the equity method:
Loss (profit) transferred to Separate Consolidated Income Statement	0	0	0
Profit (loss)	0	0	0
Income tax effect	0	0	0
Share of other comprehensive income (loss) of associates and joint ventures accounted for using the equity method, net of tax	0	0	0
Total other components that will be reclassified subsequently to Separate Consolidated Income Statement	(839)	861	(1,785)
Total other components of the Consolidated Statement of Comprehensive Income	(830)	835	(1,776)
Total comprehensive income (loss) for the year	457	2,801	(1,115)
Attributable to:
Owners of the Parent	527	2,534	(807)
Non-controlling interests	(70)	267	(308)
Total comprehensive income (loss) for the year	€ 457	€ 2,801	€ (1,115)

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Consolidated Statements of Changes in Equity - EUR (€) € in Millions	Total	Share capital [member]	Additional paid-in capital [member]	Reserve for available-for-sale financial assets [Member]	Reserve for hedging instruments [Member]	Reserve for exchange differences on translating foreign operations [Member]	Reserve for remeasurements of employee defined benefit plans (IAS 19) [member]	Sundry reserves and retained earnings (accumulated losses), including profit (loss) for the year [Member]	Equity attributable to owners of the parent [Member]	Non-controlling interests [member]
Beginning Balance at Dec. 31, 2014	€ 21,584	€ 10,634	€ 1,725	€ 75	€ (637)	€ (322)	€ (96)	€ 6,689	€ 18,068	€ 3,516
Dividends approved	(291)							(166)	(166)	(125)
Total comprehensive income (loss)	(1,115)			(43)	388	(1,091)	9	(70)	(807)	(308)
INWIT-effect of partial sale without loosing control	839							279	279	560
Merger of Telecom Italia Media S.p.A. in TIM S.p.A.	(9)	7	6					(39)	(26)	17
Convertible Bond issue maturing 2022-Equity component	186							186	186
Grant of equity instruments	10	9						1	10
Other changes	45							10	10	35
Ending balance at Dec. 31, 2015	21,249	10,650	1,731	32	(249)	(1,413)	(87)	6,890	17,554	3,695
Dividends approved	(204)							(166)	(166)	(38)
Total comprehensive income (loss)	2,801			7	(302)	1,047	(26)	1,808	2,534	267
Disposal of the Sofora-Telecom Argentina group	(1,582)									(1,582)
Conversion of the Guaranteed Subordinated Mandatory Convertible Bonds due 2016	1,300	937	363						1,300
Grant of equity instruments	1							1	1
Other changes	(12)							(16)	(16)	4
Ending balance at Dec. 31, 2016	23,553	11,587	2,094	39	(551)	(366)	(113)	8,517	21,207	2,346
Dividends approved	(230)							(166)	(166)	(64)
Total comprehensive income (loss)	457			3	(31)	(575)	9	1,121	527	(70)
Grant of equity instruments	(6)							(6)	(6)
Other changes	9					(14)		9	(5)	14
Ending balance at Dec. 31, 2017	€ 23,783	€ 11,587	€ 2,094	€ 42	€ (582)	€ (955)	€ (104)	€ 9,475	€ 21,557	€ 2,226

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Consolidated Statements of Cash Flows - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Profit (loss) from continuing operations	€ 1,287	€ 1,919	€ 50
Adjustments for:
Depreciation and amortization	4,473	4,291	4,135
Impairment losses (reversals) on non-current assets (including investments)	50	6	253
Net change in deferred tax assets and liabilities	(147)	38	(45)
Losses (gains) realized on disposals of non-current assets (including investments)	(11)	(15)	(343)
Share of losses (profits) of associates and joint ventures accounted for using the equity method	1	23	(1)
Change in provisions for employee benefits	437	(131)	389
Change in inventories	(30)	(10)	56
Change in trade receivables and net amounts due from customers on construction contracts	379	(310)	410
Change in trade payables	(605)	229	(481)
Net change in current income tax receivables/payables	(515)	581	13
Net change in miscellaneous receivables/payables and other assets/liabilities	80	(915)	634
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES (A)	5,399	5,706	5,070
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of intangible assets	(2,292)	(1,641)	(1,959)
Purchase of tangible assets	(3,477)	(3,467)	(4,761)
Total purchase of intangible and tangible assets on an accrual basis	(5,769)	(5,108)	(6,720)
Change in amounts due for purchases of intangible and tangible assets	455	450	1,294
Total purchase of intangible and tangible assets on a cash basis	(5,314)	(4,658)	(5,426)
Capital grants received	82
Acquisition of control of companies or other businesses, net of cash acquired		(10)	(5)
Acquisitions/disposals of other investments	(4)	(5)	(36)
Change in financial receivables and other financial assets (excluding hedging and non-hedging derivatives under financial assets)	466	175	(635)
Proceeds from sale that result in a loss of control of subsidiaries or other businesses, net of cash disposed of		492
Proceeds from sale/repayments of intangible, tangible and other non-current assets	30	42	717
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES (B)	(4,740)	(3,964)	(5,385)
CASH FLOWS FROM FINANCING ACTIVITIES:
Change in current financial liabilities and other	(1,188)	(437)	408
Proceeds from non-current financial liabilities (including current portion)	2,630	3,561	5,054
Repayments of non-current financial liabilities (including current portion)	(3,426)	(4,164)	(7,191)
Changes in hedging and non-hedging derivatives	997
Share capital proceeds/reimbursements (including subsidiaries)	16	4	186
Dividends paid	(235)	(227)	(204)
Changes in ownership interests in consolidated subsidiaries	(4)		845
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES (C)	(1,210)	(1,263)	(902)
CASH FLOWS FROM (USED IN) DISCONTINUED OPERATIONS/NON-CURRENT ASSETS HELD FOR SALE (D)		(45)	(19)
AGGREGATE CASH FLOWS (E=A+B+C+D)	(551)	434	(1,236)
Cash and cash equivalents beginning balance	3,952	3,216	4,910
Net foreign exchange differences on net cash and cash equivalents (G)	(155)	302	(458)
Cash and cash equivalents ending balance	3,246	3,952	3,216
Income taxes (paid) received	(1,100)	(218)	(363)
Interest expense paid	(2,899)	(2,306)	(5,145)
Interest income received	1,636	934	3,632
Dividends received	1	8	3
Cash and cash equivalents-from continuing operations	3,964	3,559	4,812
Bank overdrafts repayable on demand-from continuing operations	(12)	(441)	(19)
Cash and cash equivalents-from Discontinued operations/Non-current assets held for sale		98	117
Bank overdrafts repayable on demand-from Discontinued operations/Non-currentassets held for sale	0	0	0
Cash and cash equivalents beginning balance	3,952	3,216	4,910
Cash and cash equivalents-from continuing operations	3,575	3,964	3,559
Bank overdrafts repayable on demand-from continuing operations	(329)	(12)	(441)
Cash and cash equivalents-from Discontinued operations/Non-current assets held for sale			98
Bank overdrafts repayable on demand-from Discontinued operations/Non-currentassets held for sale	0	0	0
Cash and cash equivalents ending balance	€ 3,246	€ 3,952	€ 3,216

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Form, Content and Other General Information

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Form, Content and Other General Information

NOTE 1—FORM, CONTENT AND OTHER GENERAL INFORMATION

Form and content

Telecom Italia S.p.A. (the “Parent”), also “TIM S.p.A.”, and its subsidiaries form the “TIM Group” or the “Group”.

TIM is a joint-stock company (S.p.A.) organized under the laws of the Republic of Italy.

The registered offices of the Parent, TIM, are located in Milan, Italy, at Via Gaetano Negri 1.

The duration of the company, as stated in the company’s Bylaws, extends until December 31, 2100.

On July 27, 2017, the Board of Directors of TIM S.p.A. acknowledged the start, under Italian law, of the Direction and Coordination by Vivendi S.A..

On September 13, 2017, the Consob (the Italian Commission for Companies and the Stock Exchange) communicated that in its determination, “Vivendi exercises de facto control over TIM pursuant to Italian rules and regulations”.

The TIM Group consolidated financial statements at December 31, 2017 have therefore been prepared in accordance with the relevant provisions, indicating Vivendi S.A. as the “Controlling Entity” and TIM S.p.A. as the company subject to the Direction and Coordination of Vivendi S.A.

The TIM Group operates mainly in Europe, the Mediterranean Basin and South America.

The Group is engaged principally in the communications sector and, particularly, the fixed and mobile national and international telecommunications sector.

The TIM Group consolidated financial statements for the year ended December 31, 2017 have been prepared on a going concern basis (for further details see Note “Accounting policies”) and in accordance with International Financial Reporting Standards issued by the International Accounting Standards Board (designated as “IFRS”).

In 2017, the Group has applied the accounting policies on a basis consistent with those of the previous years, except for the new standards and interpretations adopted by the Group starting from January 1, 2017 and described below.

The consolidated financial statements have been prepared under the historical cost convention, except for available-for-sale financial assets, financial assets held for trading and derivative financial instruments which have been measured at fair value. The carrying amounts of hedged assets and liabilities have been adjusted to reflect the changes in fair value of the hedged risks (fair value hedge).

In accordance with IAS 1 (Presentation of Financial Statements) comparative information included in the consolidated financial statements is, unless otherwise indicated, that of the preceding two years.

The TIM Group consolidated financial statements at December 31, 2017 are expressed in euro (rounded to the nearest million, unless otherwise indicated).

Publication of the TIM Group consolidated financial statements for the year ended December 31, 2017 was approved by resolution of the Board of Directors’ meeting held on March 6, 2018.

Financial statement formats

The financial statement formats adopted are consistent with those indicated in IAS 1. In particular:

· the consolidated statement of financial position has been prepared by classifying assets and liabilities according to “current and non-current” criterion;

· the separate consolidated income statement has been prepared by classifying operating expenses by nature of expense as this form of presentation is considered more appropriate and representative of the specific business of the Group, conforms to internal reporting and is in line with TIM’s industrial sector;

· the consolidated statement of comprehensive income includes the profit or loss for the year as shown in the separate consolidated income statement and all other non-owner changes in equity;

· the consolidated statement of cash flows has been prepared by presenting cash flows from operating activities according to the “indirect method”, as permitted by IAS 7 (Statement of Cash Flows).

Furthermore, according to IAS 1 (paragraphs 97 and 98), certain expense and income items that are material in terms of nature and amount are separately disclosed in the notes to the separate consolidated income statement. Specifically, such items include: income/expenses arising from the disposal of property, plant and equipment, business segments and investments; expenses stemming from company reorganization and streamlining processes and projects, also in connection with corporate transactions (mergers, spin-offs, etc.); expenses resulting from litigation and regulatory fines and related liabilities; other provisions and related reversals; costs for the settlement of disputes; and impairment losses on goodwill and/or other tangible and intangible assets.

Segment Reporting

An operating segment is a component of an entity:

· that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same entity);

· whose operating results are regularly reviewed by the entity’s chief operating decision maker to make decisions about resources (for the TIM Group, the Board of Directors of the Parent) to be allocated to the segment and assess its performance; and

· for which discrete financial information is available.

In particular, the operating segments of the TIM Group are organized according to the relative geographical location of the telecommunications business (Domestic and Brazil).

The Sofora—Telecom Argentina group, which was sold on March 8, 2016, has been recognized under Discontinued operations.

The term “operating segment” is considered synonymous with “Business Unit”.

The operating segments of the TIM Group are as follows:

· Domestic: includes operations in Italy for voice and data services on fixed and mobile networks for final customers (retail) and other operators (wholesale), the operations of the Telecom Italia Sparkle group (International wholesale), that operates internationally (in Europe, in the Mediterranean and in South America) in the development of fiber optic networks for wholesale customers, the operations of Olivetti (products and services for Information Technology), as well as INWIT S.p.A. (a company operating in the electronic communications infrastructure business, specifically relating to infrastructure for housing radio transmission equipment for mobile telephone networks, for both TIM and other operators) and the units supporting the Domestic sector.

· Brazil: includes mobile (TIM Celular) and fixed (TIM Celular and Tim S.A. formerly Intelig) telecommunications operations in Brazil.

· Other Operations: includes finance companies and other minor companies not strictly related to the core business of the TIM Group.

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Accounting Policies

12 Months Ended

Dec. 31, 2017

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Accounting Policies

NOTE 2—ACCOUNTING POLICIES

Going concern

The consolidated financial statements for the year ended December 31, 2017 have been prepared on a going concern basis as there is the reasonable expectation that TIM will continue its operational activities in the foreseeable future (and in any event with a time horizon of at least twelve months).

In particular, consideration has been given to the following factors:

· the main risks and uncertainties (that are for the most part of external in nature) to which the Group and the various activities of the TIM Group are exposed:

· macroeconomic changes in the Italian, European and Brazilian market, as well as the volatility of financial markets in the Eurozone, also as a result of the “Brexit” referendum in the United Kingdom;

· variations in business conditions also related to competition;

· changes to laws and regulations (price and rate variations, or decisions that may affect the technological choices);

· outcomes of legal disputes and proceedings with regulatory authorities, competitors and other parties;

· financial risks (interest rate and/or exchange rate trends, changes in the Group’s credit rating by rating agencies);

· the optimal mix between risk capital and debt capital as well as the policy for the remuneration of risk capital, described in the paragraph “Share capital information” under the Note “Equity”;

· the policy for financial risk management (market risk, credit risk and liquidity risk) as described in the Note “Financial risk management”.

Management believes that, at the present time, such factors do not raise substantial doubts as to the Group’s ability to continue as a going concern.

Principles of consolidation

The consolidated financial statements include the financial statements of all subsidiaries from the date control over such subsidiaries commences until the date that control ceases.

The statement of financial position date of all the subsidiaries’ financial statements coincides with that of the Parent.

Control exists when the Parent has all the following:

· power over the investee, which includes the ability to direct the relevant activities of the investee, i.e. the activities that significantly affect the investee’s returns;

· exposure, or rights, to variable returns from its involvement with the investee;

· the ability to use its power over the investee to affect the amount of the investor’s returns.

TIM assesses whether it controls an investee if facts and circumstances indicate that there are changes in one or more of the three control elements.

In the preparation of the consolidated financial statements, assets, liabilities, revenues and expenses of the consolidated companies are consolidated on a line-by-line basis and non-controlling interests in equity and in the profit (loss) for the year are disclosed separately under appropriate captions, respectively, in the consolidated statement of financial position, in the separate consolidated income statement and in the consolidated statement of comprehensive income.

Under IFRS 10 (Consolidated financial statements), the total comprehensive loss (including the profit or loss for the year) is attributed to the owners of the parent and to the non-controlling interests even if this results in the non-controlling interests having a deficit balance.

All intragroup balances and transactions and any gains or losses arising from intragroup transactions are eliminated upon consolidation.

The carrying amount of the investment in each subsidiary is eliminated against the corresponding share of equity in each subsidiary, after adjustment, if any, to fair value at the acquisition date of control. At that date, goodwill is recorded as an intangible asset, as described below, whereas any gain from a bargain purchase or negative goodwill is recognized in the separate consolidated income statement.

Assets and liabilities of foreign consolidated subsidiaries which are denominated in currencies other than euro are converted at the exchange rates prevailing at the statement of financial position date (the current method); income and expenses are converted at the average exchange rates for the year. Exchange differences resulting from the application of this method are classified as equity until the entire disposal of the investment or upon loss of control of the foreign subsidiary. Upon partial disposal, without losing control, the proportionate share of the cumulative amount of exchange differences related to the disposed interest is recognized in non-controlling interests.

The cash flows of foreign consolidated subsidiaries denominated in currencies other than Euro included in the consolidated statement of cash flows are converted into Euro at the average exchange rates for the year.

Goodwill and fair value adjustments arising from the allocation of the purchase price of a foreign entity are recorded in the relevant foreign currency and are converted using the year-end exchange rate.

Under IFRS 10, changes in a parent’s ownership interest in a subsidiary that do not result in a loss or acquisition of control are accounted for as equity transactions. In such circumstances the carrying amounts of the controlling and non-controlling interests shall be adjusted to reflect the changes in their relative interests in the subsidiary. Any difference between the amount by which the non-controlling interests are adjusted and the fair value of the consideration paid or received shall be recognized directly in equity and attributed to the owners of the Parent.

Under IFRS 10, the parent company in case of loss of control of a subsidiary:

· derecognizes:

· the assets (including any goodwill) and liabilities;

· the carrying amount of any non-controlling interests;

· recognizes:

· the fair value of the consideration received, if any, from the transaction;

· any investment retained in the former subsidiary at its fair value at the date when control is lost;

· any gain or loss, resulting from the transaction, in the separate consolidated income statement;

· the reclassification to the separate consolidated income statement, of the amounts previously recognized in other comprehensive income in relation to the subsidiary.

In the consolidated financial statements, investments in associates and joint ventures are accounted for using the equity method, as provided, respectively, by IAS 28 (Investments in Associates and Joint Ventures) and IFRS 11 (Joint Arrangements).

Associates are all entities in which the Group holds at least 20% of the voting rights or exercises significant influence, but no control or joint control over the financial and operating policies.

A joint venture is a joint arrangement whereby the parties that have joint control of the arrangement have rights to the net assets of the arrangement.

Joint control is the contractually agreed sharing of control of an arrangement, which exists only when decisions about the relevant activities require the unanimous consent of the parties sharing control.

Associates and joint ventures are included in the consolidated financial statements from the date that significant influence or joint control commences until the date such significant influence or joint control ceases.

Under the equity method, on initial recognition the investment in an associate or a joint venture is recognized at cost, and the carrying amount is increased or decreased to recognize the investor’s share of the profit or loss of the investee after the date of acquisition. The investor’s share of the investee’s profit or loss is recognized in the investor’s income statement. Dividends received from an investee reduce the carrying amount of the investment. Adjustments to the carrying amount may also be necessary for changes in the investee’s other comprehensive income (i.e. those arising from foreign exchange conversion differences). The investor’s share of those changes is recognized in the investor’s other comprehensive income.

If an investor’s share of losses of an associate or a joint venture equals or exceeds its interest in the associate or joint venture, the investor discontinues recognizing its share of further losses.

After the investor’s interest is reduced to zero, additional losses are provided for, and a liability is recognized, only to the extent that the investor has incurred legal or constructive obligations or made payments on behalf of the associate or joint venture. If the associate or joint venture subsequently reports profits, the investor resumes recognizing its share of those profits only after its share of the profits equals the share of losses not recognized.

Gains and losses resulting from “upstream” and “downstream” transactions between an investor (including its consolidated subsidiaries) and its associate or joint venture are recognized in the investor’s financial statements only to the extent of unrelated investors’ interests in the associate or joint venture.

Gains and losses arising from transactions with associates or joint ventures are eliminated to the extent of the Group’s interest in those entities.

Intangible assets

Goodwill

Under IFRS 3 (Business Combinations), goodwill is recognized as of the acquisition date of control and measured as the excess of (a) over (b) below:

a) the aggregate of:

· the consideration transferred (measured in accordance with IFRS 3; it is generally recognized on the basis of the acquisition date fair value);

· the amount of any non-controlling interest in the acquiree measured at the non-controlling interest’s proportionate share of the acquiree’s identifiable net assets at the acquisition date fair value;

· in a business combination achieved in stages, the acquisition date fair value of the acquirer’s previously held equity interest in the acquiree;

b) the acquisition date fair value of the identifiable assets acquired net of the identifiable liabilities assumed measured at the acquisition date of control.

IFRS 3 requires, inter alia, the following:

· incidental costs incurred in connection with a business combination are charged to the separate consolidated income statement;

· in a business combination achieved in stages, the acquirer shall remeasure its previously held equity interest in the acquiree at its fair value at the acquisition date of control and recognize the resulting gain or loss, if any, in the separate consolidated income statement.

Goodwill is classified in the statement of financial position as an intangible asset with an indefinite useful life.

Goodwill initially recorded is subsequently reduced only for impairment losses. Further details are provided in the accounting policy Impairment of tangible and intangible assets—Goodwill, reported below. In case of loss of control of a subsidiary, the relative amount of goodwill is taken into account in calculating the gain or loss on disposal.

Development costs

Costs incurred internally for the development of new products and services represent either intangible assets (mainly costs for software development) or tangible assets. Such costs are capitalized only when all the following conditions are satisfied: i) the cost attributable to the development phase of the asset can be measured reliably, ii) there is the intention, the availability of financial resources and the technical ability to complete the asset and make it available for use or sale and iii) it can be demonstrated that the asset will be able to generate future economic benefits.

Capitalized development costs comprise only expenditures that can be attributed directly to the development process for new products and services.

Capitalized development costs are amortized systematically over the estimated product or service life so that the amortization method reflects the way in which the asset’s future economic benefits are expected to be consumed by the entity.

Other intangible assets with a finite useful life

Other purchased or internally-generated assets with a finite useful life are recognized as assets, in accordance with IAS 38 (Intangible Assets), where it is probable that the use of the asset will generate future economic benefits and where the cost of the asset can be measured reliably.

Such assets are recorded at purchase or production cost and amortized on a straight-line basis over their estimated useful lives; the amortization rates are reviewed annually and revised if the current estimated useful life is different from that estimated previously. The effect of such changes is recognized in the separate consolidated income statement prospectively.

For a small portion of mobile offerings, the Group capitalizes directly attributable subscriber acquisition costs (currently mainly represented by commissions for the sales network) when the following conditions are met:

· the capitalized costs can be measured reliably;

· there is a contract binding the customer for a specific period of time;

· it is probable that the amount of the capitalized costs will be recovered through the revenues generated by the services contractually provided, or, where the customer withdraws from the contract in advance, through the collection of a penalty.

Capitalized subscriber acquisition costs are amortized on a straight-line basis over the foreseen minimum period of the underlying contract (between 12 and 36 months).

In all other cases, subscriber acquisition costs are recognized in the separate consolidated income statement when incurred.

Tangible assets

Property, plant and equipment owned

Property, plant and equipment owned is stated at acquisition or production cost. Subsequent expenditures are capitalized only if they increase the future economic benefits embodied in the related item of property, plant and equipment. All other expenditures are expensed as incurred.

Cost also includes the expected costs of dismantling the asset and restoring the site if a legal or constructive obligation exists. The corresponding liability is recognized at its present value as a provision in the statement of financial position. These capitalized costs are depreciated and charged to the separate consolidated income statement over the useful life of the related tangible assets.

The recalculation of estimates for dismantling costs, discount rates and the dates in which such costs are expected to be incurred is reviewed annually, at each financial year-end. Changes in the above liability must be recognized as an increase or decrease of the cost of the relative asset; the amount deducted from the cost of the asset must not exceed its carrying amount. The excess if any, should be recorded immediately in the separate consolidated income statement, conventionally under the line item “Depreciation”.

Depreciation of property, plant and equipment owned is calculated on a straight-line basis over the estimated useful life of the assets.

The depreciation rates are reviewed annually and revised if the current estimated useful life is different from that estimated previously. The effect of such changes is recognized in the separate consolidated income statement prospectively.

Land, including land pertaining to buildings, is not depreciated.

Assets held under finance leases

Assets held under finance leases, in which substantially all the risks and rewards of ownership are transferred to the Group, are initially recognized as assets of the Group at fair value or, if lower, at the present value of the minimum lease payments, including bargain purchase options. The corresponding liability due to the lessor is included in the statement of financial position under financial liabilities.

Lease payments are apportioned between interest (recognized in the separate consolidated income statement) and principal (recognized as a deduction from liabilities). This split is determined so as to produce a constant periodic rate of interest on the remaining balance of the liability.

Furthermore, gains realized on sale and leaseback transactions that are recorded under finance lease contracts are deferred over the lease term.

The depreciation policy for depreciable assets held under finance leases is consistent with that for depreciable assets that are owned. If there is no reasonable certainty over the acquisition of the ownership of the asset at the end of the lease period, assets held under finance leases are depreciated over the shorter of the lease term and their useful lives.

Leases where the lessor retains substantially all the risks and rewards of ownership of the assets are accounted for as operating leases. Operating lease rentals are charged to the separate consolidated income statement on a straight-line basis over the lease term.

When a lease includes both land and buildings, an entity assesses the classification of each element as a finance or an operating lease separately.

Capitalized borrowing costs

Under IAS 23 (Borrowing Costs), the Group capitalizes borrowing costs only if they are directly attributable to the acquisition, construction or production of a qualifying asset, that is an asset that takes a substantial period of time (conventionally more than 12 months) to get ready for its intended use or sale.

Capitalized borrowing costs are recorded in the separate consolidated income statement and deducted from the “finance expense” line item to which they relate.

Impairment of intangible and tangible assets

Goodwill

Goodwill is tested for impairment at least annually or more frequently whenever events or changes in circumstances indicate that goodwill may be impaired, as set forth in IAS 36 (Impairment of Assets); however, when the conditions that gave rise to an impairment loss no longer exist, the original amount of goodwill is not reinstated.

The test is generally conducted at the end of every year so the date of testing is the year-end closing date of the financial statements. Goodwill acquired and allocated during the year is tested for impairment at the end of the year in which the acquisition and allocation took place.

To test for impairment, goodwill is allocated at the date of acquisition to each cash-generating unit or group of cash-generating units which is expected to benefit from the acquisition.

If the carrying amount of the cash-generating unit (or group of cash-generating units) exceeds the recoverable amount, an impairment loss is recognized in the separate consolidated income statement. The impairment loss is first recognized as a deduction of the carrying amount of goodwill allocated to the cash-generating unit (or group of cash-generating units) and then only applied to the other assets of the cash-generating unit in proportion to their carrying amount, up to the recoverable amount of the assets with a finite useful life. The recoverable amount of a cash-generating unit (or group of cash-generating units) to which goodwill is allocated is the higher of fair value less costs to sell and its value in use.

In calculating the value in use, the estimated future cash flows are discounted to present value using a discount rate that reflects current market assessments of the time value of money and the risks specific to the asset. The future cash flows are those arising from an explicit time horizon between three and five years as well as those extrapolated to estimate the terminal value. The long-term growth rate used to estimate the terminal value of the cash-generating unit (or group of cash-generating units) is assumed not to be higher than the average long-term growth rate of the segment, country or market in which the cash-generating unit (or group of cash-generating units) operates.

The value in use of cash-generating units denominated in foreign currency is estimated in the local currency by discounting cash flows to present value on the basis of an appropriate rate for that currency. The present value obtained is converted to euro at the spot rate on the date of the impairment test (in the case of the TIM Group, the date of the financial statements).

Future cash flows are estimated by referring to the current operating conditions of the cash generating unit (or group of cash-generating units) and, therefore, do not include either benefits originating from future restructuring for which the entity is not yet committed, or future investments for the improvement or optimization of the cash-generating unit.

For the purpose of calculating impairment, the carrying amount of the cash-generating unit is established based on the same criteria used to determine the recoverable amount of the cash generating unit, excluding surplus assets (that is, financial assets, deferred tax assets and net non-current assets held for sale) and includes the goodwill attributable to non-controlling interests.

After conducting the goodwill impairment test for the cash-generating unit (or groups of cash-generating units), a second level of impairment testing is carried out which includes the corporate assets which do not generate positive cash flows and which cannot be allocated by a reasonable and consistent criterion to the single units. At this second level, the total recoverable amount of all cash-generating units (or groups of cash-generating units) is compared to the carrying amount of all cash-generating units (or groups of cash-generating units), including also those cash-generating units to which no goodwill was allocated, and the corporate assets.

Intangible and tangible assets with a finite useful life

At every closing date, the Group assesses whether there are any indications of impairment of intangible and tangible assets with a finite useful life. Both internal and external sources of information are used for this purpose. Internal sources include obsolescence or physical damage, and significant changes in the use of the asset and the economic performance of the asset compared to estimated performance. External sources include the market value of the asset, changes in technology, markets or laws, trend in market interest rates and the cost of capital used to evaluate investments, and an excess of the carrying amount of the net assets of the Group over market capitalization.

When indicators of impairment exist, the carrying amount of the assets is reduced to the recoverable amount. The recoverable amount of an asset is the higher of fair value less costs to sell and its value in use. In calculating the value in use, the estimated future cash flows are discounted to present value using a discount rate that reflects current market assessments of the time value of money and the risks specific to the asset. Where it is not possible to estimate the recoverable amount of an individual asset, the Group estimates the recoverable amount of the cash-generating unit to which the asset belongs. Impairment losses are recognized in the separate consolidated income statement.

When the conditions that gave rise to an impairment loss no longer exist, the carrying amount of the asset or cash-generating unit is increased to the revised estimate of its recoverable amount, up to the carrying amount that would have been recorded had no impairment loss been recognized. The reversal of an impairment loss is recognized as income in the separate consolidated income statement.

Financial instruments

Other investments

Other investments (other than those in subsidiaries, associates and joint ventures) are classified as non-current or current assets if they will be kept in the Group’s portfolio for a period of more or not more than 12 months, respectively.

Upon acquisition, investments are classified in the following categories:

· “available-for-sale financial assets”, as non-current or current assets;

· “financial assets at fair value through profit or loss”, as current assets held for trading.

Other investments classified as “available-for-sale financial assets” are measured at fair value; changes in the fair value of these investments are recognized in a specific equity reserve under the other components of the statement of comprehensive income (Reserve for available-for-sale financial assets) until the financial asset is disposed of or impaired, at which time the equity reserve is reversed to the separate consolidated income statement.

Other unlisted investments classified as “available-for-sale financial assets” whose fair value cannot be measured reliably are measured at cost adjusted by any impairment losses which are recognized in the separate consolidated income statement, as required by IAS 39 (Financial instruments: recognition and measurement).

Impairment losses recognized on other investments classified as “available-for-sale financial assets” are not reversed.

Changes in the value of other investments classified as “financial assets at fair value through profit or loss” are recognized directly in the separate consolidated income statement.

Securities other than investments

Securities other than investments classified as non-current assets are those held to maturity. The assets are recorded on the trade date and, on initial recognition, are stated at acquisition cost, including transaction costs, and subsequently measured at amortized cost.

Amortized cost represents the initial cost of the financial instrument net of principal repayments received, adjusted (up or down) by the amortization of any differences between the initial amount and the maturity amount using the effective interest method, less any write-down for impairment or uncollectibility, if any.

Securities other than investments classified as current assets are those that, by decision of the directors, are intended to be kept in the Group’s portfolio for a period of not more than 12 months, and are included in the following categories:

· held to maturity (originally more than 3 months but less than 12 months, or, with an original maturity of more than 12 months but the remaining maturity at the date of purchase is more than 3 months but less than 12 months) and measured at amortized cost;

· held for trading and measured at fair value through profit or loss;

· available-for-sale and measured at fair value with a contra-entry to an equity reserve (Reserve for available-for-sale financial assets) which is reversed to the separate consolidated income statement when the financial asset is disposed of or impaired.

When the conditions that gave rise to impairment losses on securities other than investments held to maturity or classified as “available-for-sale financial assets” no longer exist, the impairment losses are reversed.

Receivables and loans

Receivables and loans classified as either non-current or current assets are initially recognized at fair value and subsequently measured at amortized cost.

Cash and cash equivalents

Cash and cash equivalents are recorded, according to their nature, at nominal value or amortized cost.

Cash equivalents are short-term and highly liquid investments that are readily convertible to known amounts of cash, subject to an insignificant risk of change in value and their original maturity or the remaining maturity at the date of purchase does not exceed 3 months.

Impairment of financial assets

At every closing date, assessments are made as to whether there is any objective evidence that a financial asset or a group of financial assets may be impaired. If any such evidence exists, an impairment loss is recognized in the separate consolidated income statement for financial assets measured at cost or amortized cost; for “available-for-sale financial assets” reference should be made to the accounting policy described above.

Financial liabilities

Financial liabilities comprise financial debt, including advances received on the assignment of accounts receivable, and other financial liabilities such as derivatives and finance lease obligations.

In accordance with IAS 39, they also include trade and other payables.

Financial liabilities other than derivatives are initially recognized at fair value and subsequently measured at amortized cost.

Financial liabilities hedged by derivative instruments designed to manage exposure to changes in fair value of the liabilities (fair value hedge derivatives) are measured at fair value in accordance with the hedge accounting principles of IAS 39. Gains and losses arising from re-measurement at fair value, to the extent of the hedged component, are recognized in the separate consolidated income statement and are offset by the effective portion of the gain or loss arising from re-measurement at fair value of the hedging instrument.

Financial liabilities hedged by derivative instruments designed to manage exposure to variability in cash flows (cash flow hedge derivatives) are measured at amortized cost in accordance with the hedge accounting principles of IAS 39.

Derivatives

Derivatives are used by the TIM Group to manage its exposure to exchange rate and interest rate risks and to diversify the parameters of debt so that costs and volatility can be reduced to within pre-established operational limits.

In accordance with IAS 39, derivative financial instruments qualify for hedge accounting only when:

a) at the inception of the hedge, the hedging relationship is formally designated and documented;

b) the hedge is expected to be highly effective;

c) its effectiveness can be reliably measured;

d) the hedge is highly effective throughout the financial reporting periods for which it is designated.

All derivative financial instruments are measured at fair value in accordance with IAS 39.

When derivative financial instruments qualify for hedge accounting, the following accounting treatment applies:

· Fair value hedge—Where a derivative financial instrument is designated as a hedge of the exposure to changes in fair value of an asset or liability due to a particular risk, the gain or loss from re-measuring the hedging instrument at fair value is recognized in the separate consolidated income statement. The gain or loss on the hedged item attributable to the hedged risk adjusts the carrying amount of the hedged item and is recognized in the separate consolidated income statement.

· Cash flow hedge—Where a derivative financial instrument is designated as a hedge of the exposure to variability in cash flows of an asset or liability or a highly probable forecasted transaction, the effective portion of any gain or loss on the derivative financial instrument is recognized directly in a specific equity reserve (Reserve for hedging instruments). The cumulative gain or loss is removed from equity and recognized in the separate consolidated income statement at the same time the hedged transaction affects the separate consolidated income statement. The gain or loss associated with the ineffective portion of a hedge is recognized in the separate consolidated income statement immediately. If the hedged transaction is no longer probable, the cumulative gains or losses included in the equity reserve are immediately recognized in the separate consolidated income statement.

If hedge accounting is not appropriate, gains or losses arising from the measurement of the fair value of derivative financial instruments are directly recognized in the separate consolidated income statement.

Sales of receivables

The TIM Group carries out sales of receivables under factoring arrangements. These sales, in the majority of cases, are characterized by the transfer of substantially all the risks and rewards of ownership of the receivables to third parties, meeting IFRS requirements for derecognition. Specific servicing contracts, through which the buyer confers a mandate to TIM S.p.A. for the collection and management of the receivables, leave the current Company/customer relationship unaffected.

Amounts due from customers on construction contracts

Amounts due from customers on construction contracts, regardless of the duration of the contracts, are recognized in accordance with the percentage of completion method and classified under current assets.

Losses on such contracts, if any, are recorded in full in the separate consolidated income statement when they become known.

Inventories

Inventories are measured at the lower of purchase and/or production cost and estimated realizable value; cost is determined on a weighted average basis. Provision is made for obsolete and slow-moving inventories based on their expected future use and estimated realizable value.

Non-current assets held for sale/Discontinued operations

Non-current assets held for sale (or disposal groups) whose carrying amount will mainly be recovered through sale, rather than through ongoing use, are classified as held for sale and shown separately in the consolidated statement of financial position from other assets and liabilities. The corresponding statement of financial position amounts for the previous year are not reclassified in the consolidated statement of financial position but are instead shown separately in a specific column in the changes in assets and liabilities in the year in which the non-current assets held for sale or the disposal groups are classified as such. An operating asset sold (Discontinued Operations) is a component of an entity that has been disposed of or classified as held for sale and:

· represents a major line of business or geographical area of operations;

· is part of a single coordinated plan to dispose of a separate major line of business or geographical area of operations; or

· is a subsidiary acquired exclusively with a view to resale.

The results arising from Discontinued Operations—whether disposed of or classified as held for sale—are shown separately in the separate consolidated income statement, net of tax effects. The corresponding values for the previous years, where present, are reclassified and reported separately in the separate consolidated income statement, net of tax effects, for comparative purposes.

Non-current assets held for sale (or disposal groups) classified as held for sale are first recognized in compliance with the appropriate IFRS applicable to the specific assets and liabilities and subsequently measured at the lower of the carrying amount and fair value, less costs to sell. Any subsequent impairment losses are recognized as a direct adjustment to the non-current assets (or disposal groups) classified as held for sale and expensed in the separate consolidated income statement.

An entity shall recognize a gain for any subsequent increase in fair value less costs to sell of an asset, but not in excess of the cumulative impairment loss that has been recognized.

As required by IFRS 5 (Non-current assets held for sale and discontinued operations), an entity shall not depreciate (or amortize) a non-current asset while it is classified as held for sale or while it is part of a disposal group classified as held for sale.

Interest and other expenses attributable to the liabilities of a disposal group classified as held for sale shall continue to be recognized.

Employee benefits

Provision for employee severance indemnity

Employee severance indemnity, mandatory for Italian companies pursuant to Article 2120 of the Italian Civil Code, is a deferred compensation and is based on the employees’ years of service and the compensation earned by the employee during the service period.

Under IAS 19 (Employee Benefits), the employee severance indemnity as calculated is considered a “Defined benefit plan” and the related liability recognized in the statement of financial position (Provision for employee severance indemnities) is determined by actuarial calculations.

The remeasurements of actuarial gains and losses are recognized in other components of other comprehensive income. Service cost of Italian companies that employ less than 50 employees, as well as interest expenses related to the “time value” component of the actuarial calculations (the latter classified as Finance expenses), are recognized in the separate consolidated income statement.

Starting from January 1, 2007, Italian Law introduced for employees the choice to direct their accruing indemnity either to supplementary pension funds or leave the indemnity as an obligation of the Company. Companies that employ at least 50 employees should transfer the employee severance indemnity to the “Treasury fund” managed by INPS, the Italian Social Security Institute.

Consequently, the Group’s obligation to INPS and the contributions to supplementary pension funds take the form, under IAS 19, of a “Defined contribution plan”.

Equity compensation plans

The companies of the Group provide additional benefits to certain managers of the Group through equity compensation plans (i.e., stock options and long-term incentive plans). The above plans are recognized in accordance with IFRS 2 (Share-Based Payment).

In accordance with IFRS 2, such plans represent a component of the beneficiaries’ compensation. Therefore, for the plans that provide for compensation in equity instruments, the cost is represented by the fair value of such instruments at the grant date, and is recognized in the separate consolidated income statement in “Employee benefits expenses” over the period between the grant date and vesting date with a contra-entry to an equity reserve denominated “Other equity instruments”. Changes in the fair value subsequent to the grant date do not affect the initial measurement. At the end of each year, adjustments are made to the estimate of the number of rights that will vest up to expiry. The impact of the change in estimate is deducted from “Other equity instruments” with a contra-entry to “Employee benefits expenses”.

For the portion of the plans that provide for the payment of compensation in cash, the amount is recognized in liabilities as a contra-entry to “Employee benefits expenses”; at the end of each year such liability is measured at fair value.

Provisions

The Group records provisions for risks and charges when it has a present obligation, legal or constructive, to a third party, as a result of a past event, when it is probable that an outflow of Group resources will be required to satisfy the obligation and when the amount of the obligation can be estimated reliably.

If the effect of the time value is material, and the payment date of the obligations can be reasonably estimated, provisions to be accrued are the present value of the expected cash flows, taking into account the risks associated with the obligation. The increase in the provision due to the passage of time is recognized as “Finance expenses”.

Government grants

Government grants are not recognized until there is reasonable assurance that the Group will comply with the conditions set by the Government, governmental and similar local, national or international bodies, for their disbursement.

Government grants are recognized in the Separate income statement on a systematic basis over the years in which the Group recognizes as expenses the related costs that the grants are intended to compensate.

Government grants related to assets received for the acquisition and /or construction of non-current tangible assets are recorded as deferred income in the Statement of financial position and credited to the Separate income statement on a systematic basis over the useful life of the facilities to which the grants relate.

Treasury shares

Treasury shares are recognized as a deduction from equity. In particular, the treasury shares are reported as a deduction from the share capital issued in the amount corresponding to the “accounting par value”, that is the ratio of total share capital and the number of issued shares, while the excess cost of acquisition over the accounting par value is presented as a deduction from “Other reserves and retained earnings (accumulated losses), including profit (loss) for the year”.

Foreign currency transactions

Transactions in foreign currencies are recorded at the foreign exchange rate prevailing at the date of the transaction. Monetary assets and liabilities denominated in foreign currencies are converted at the foreign exchange rate prevailing at the statement of financial position date. Exchange differences arising from the settlement of monetary items or from their conversion at rates different from those at which they were initially recorded during the year or at the end of the prior year, are recognized in the separate consolidated income statement.

Revenues

Revenues are the gross inflows of economic benefits during the period arising in the course of the ordinary activities of an entity. Amounts collected on behalf of third parties such as sales taxes, goods and services taxes and value added taxes are not economic benefits which flow to the entity and do not result in increases in equity. Therefore, they are excluded from revenues.

Revenues are recognized to the extent that it is probable that economic benefits will flow to the Group and their amount can be measured reliably. Revenues are stated net of discounts, allowances, and returns.

· Revenues from services rendered

Revenues from services rendered are recognized in the separate consolidated income statement according to the stage of completion of the service and only when the outcome of the service rendered can be estimated reliably.

Traffic revenues from interconnection and roaming are reported gross of the amounts due to other TLC operators.

Revenues for delivering information or other content are recognized on the basis of the amount invoiced to the customer, when the service is rendered directly by the Group. In the event that the Group is acting as agent (for example non-geographic numbers) only the commission received from the content provider is recognized as revenue.

Revenues from the activation of telephone services (and related costs) are deferred over the expected duration of the relationship with the customer (in Italy, generally 8 years for retail customers and 3 years for wholesale customers). In particular, costs from the activation of telephone services are deferred taking also into account the reasonable expectations of cash flows arising from these services.

Revenues from prepaid customers are recorded on the basis of the traffic used. Deferred revenues for unused traffic are recorded in “Trade and miscellaneous payables and other current liabilities” in the consolidated statement of financial position.

· Revenues from sales and bundled offerings

Revenues from sales (telephone and other equipment) are recognized when the significant risks and rewards of ownership are transferred to the buyer.

For offerings which include the sale of mobile handsets and service contracts, the TIM Group recognizes revenues related to the sale of the handset when it is delivered to the final customer whereas traffic revenues are recorded on the basis of the traffic used; the related subscriber acquisition costs, including sales commissions, are expensed as incurred. The revenues allocated to the handset sale are limited to the contract amount that is not contingent upon the rendering of telecommunication services, i.e. the residual of the amount paid by the customer exceeding the services value.

A small portion of the bundled mobile offerings involve contracts with a minimum contractual period between 12 and 36 months which include an enforced termination penalty. For these contracts, the subscriber acquisition costs are capitalized under “Intangible assets with a finite useful life” if the conditions for capitalization as described in the related accounting policy are met.

· Revenues on construction contracts

Revenues on construction contracts are recognized based on the stage of completion (percentage of completion method).

Research costs and advertising expenses

Research costs and advertising expenses are charged directly to the separate consolidated income statement in the year in which they are incurred.

Finance income and expenses

Finance income and expenses are recognized on an accrual basis and include: interest accrued on the related financial assets and liabilities using the effective interest rate method, the changes in fair value of derivatives and other financial instruments measured at fair value through profit or loss, gains and losses on foreign exchange and financial instruments (including derivatives).

Dividends

Dividends received from companies other than subsidiaries, associates and joint ventures are recognized in the separate consolidated income statement in the year in which they become receivable following the resolution by the shareholders’ meeting for the distribution of dividends of the investee companies.

Dividends payable to third parties are reported as a change in equity in the year in which they are approved by the shareholders’ meeting.

Income Taxes (current and deferred)

Income taxes include all taxes calculated on the basis of the taxable income of the companies of the Group.

Income taxes are recognized in the separate consolidated income statement, except to the extent that they relate to items directly charged or credited to equity, in which case the related tax is recognized in the relevant equity reserves. In the Statement of comprehensive income the amount of income taxes relating to each item included as “Other components of the Statement of comprehensive income” is indicated.

The income tax expense that could arise on the remittance of a subsidiary’s retained earnings is only recognized where there is the actual intention to remit such earnings.

Deferred tax liabilities / assets are recognized using the “Balance sheet liability method”. They are calculated on all temporary differences that arise between the tax base of an asset or liability and the carrying amounts in the consolidated financial statements, except for non-tax-deductible goodwill and for those differences related to investments in subsidiaries which will not reverse in the foreseeable future. Deferred tax assets relating to unused tax loss carryforwards are recognized to the extent that it is probable that future taxable income will be available against which they can be utilized. Current and deferred tax assets and liabilities are offset when the income taxes are levied by the same tax authority and there is a legally enforceable right of offset. Deferred tax assets and liabilities are determined based on enacted tax rates in the respective jurisdictions in which the Group operates that are expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled.

Taxes, other than income taxes, are included in “Other operating expenses”.

Earnings per share

Basic earnings per ordinary share is calculated by dividing the Group’s profit attributable to ordinary shares by the weighted average number of ordinary shares outstanding during the year, excluding treasury shares. Similarly, basic earnings per savings share is calculated by dividing the Group’s profit attributable to savings shares by the weighted average number of savings shares outstanding during the year.

For diluted earnings per ordinary share, the weighted average number of shares outstanding during the year is adjusted by all dilutive potential shares (for example, the exercise of rights on shares with dilutive effects). The Group profit is also adjusted to reflect the impact of these transactions net of the related tax effects.

Use of estimates

The preparation of consolidated financial statements and related disclosure in conformity with IFRS requires management to make estimates and assumptions based also on subjective judgments, past experience and hypotheses considered reasonable and realistic in relation to the information known at the time of the estimate. Such estimates have an effect on the reported amount of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements as well as the amount of revenues and costs during the year. Actual results could differ, even significantly, from those estimates owing to possible changes in the factors considered in the determination of such estimates. Estimates are reviewed periodically.

The most important accounting estimates which require a high degree of subjective assumptions and judgments are addressed below:

Financial statement line item/area	Accounting estimates
Impairment of goodwill	The impairment test on goodwill is carried out by comparing the carrying amount of cash-generating units and their recoverable amount. The recoverable amount of a cash-generating unit is the higher of fair value, less costs to sell, and its value in use. This complex valuation process entails the use of methods such as the discounted cash flow method which uses assumptions to estimate cash flows. The recoverable amount depends significantly on the discount rate used in the discounted cash flow model as well as the expected future cash flows and the growth rate used for the extrapolation. The key assumptions used to determine the recoverable amount for the different cash generating units, including a sensitivity analysis, are detailed in the Note “Goodwill”.
Impairment of tangible and intangible assets with a finite useful life	At every closing date, the Group assesses whether there are any indications of impairment of tangible and intangible assets with a finite useful life. Both internal and external sources of information are used for this purpose. The identification of impairment indicators, the estimation of future cash flows and the determination of the fair value of each asset require management to make significant judgments including the applicable discount rate, useful life and residual value. These estimates can have a material impact on fair value and the amount of any write-downs.
Business combinations	The recognition of business combinations requires that assets and liabilities of the acquiree be recorded at their fair value at the acquisition date of control, as well as the possible recognition of goodwill, through the use of a complex process in determining such values.
Capitalization / deferral of costs	The capitalization / deferral process of internal and external costs involves some areas of Management judgement among which there are the assessment of: i) the probability that the amount of the capitalized / deferred costs will be recovered through the associated future revenues; and ii) the actual increase in future economic benefits of the asset to which they refer.
Bad debt provision	The recoverability of receivables is measured by considering the uncollectibility of receivables, their age and losses on receivables recognized in the past by type of similar receivables.
Depreciation and amortization expense	Changes in the economic conditions of the markets, technology and competitive forces could significantly affect the estimated useful lives of tangible and intangible non-current assets and may lead to a difference in the timing and amount of depreciation and amortization expense.
Accruals, contingent liabilities and employee benefits	With respect to provisions for restoration costs the estimate of future costs to dismantle tangible assets and restore the site is a complex process that requires an assessment of the liability arising from such obligations which seldom are entirely defined by law, administrative regulations or contract clauses and which normally are to be complied with after an interval of several years. The accruals related to legal, arbitration and fiscal disputes are the result of a complex estimation process based upon the probability of an unfavorable outcome. Employee benefits, especially the provision for employee severance indemnities, are calculated using actuarial assumptions; changes in such assumptions could have a material impact on such liabilities.
Revenues	Revenue recognition is influenced by: ·   the expected duration of the relationship with the customer for revenues from telephone service activations (as well as the related costs); ·   the estimate of the amount of discounts, allowances and returns to be recorded as a direct deduction from revenues.
Income taxes (current and deferred)	Income taxes (current and deferred) are calculated in each country in which the Group operates according to a prudent interpretation of the tax laws in effect. This process sometimes involves complex estimates to determine taxable income and deductible and taxable temporary differences between the carrying amounts and the taxable amounts. In particular, deferred tax assets are recognized to the extent that future taxable income will be available against which they can be utilized. The measurement of the recoverability of deferred tax assets, recognized based on both unused tax loss carryforwards to future years and deductible differences, takes into account the estimate of future taxable income and is based on conservative tax planning.
Derivative instruments and equity instruments	The fair value of derivative instruments and equity instruments is determined both using valuation models which also take into account subjective measurements such as, for example, cash flow estimates, expected volatility of prices, etc., or on the basis of either prices in regulated markets or quoted prices provided by financial counterparts. For further details please see also Note “Supplementary disclosures on financial instruments”.

As required by IAS 8 (Accounting Policies, Changes in Accounting Estimates and Errors) par. 10, in the absence of a Standard or an Interpretation that specifically applies to a particular transaction, management carefully considers subjective valuation techniques and uses its judgment as to the accounting methods to adopt with a view to providing financial statements which faithfully represent the financial position, the results of operations and the cash flows of the Group, which reflect the economic substance of the transactions, are neutral, prepared on a prudent basis and complete in all material respects.

New Standards and Interpretations issued by IASB and in force from January 1, 2017

In accordance with IAS 8 (Accounting Policies, Changes in Accounting Estimates and Errors) the IFRS in force starting from January 1, 2017 are indicated and briefly described below.

Amendments to IAS 12 (Income Taxes)—Recognition of deferred tax assets for unrealized losses

In January 2016, IASB issued some amendments to IAS 12 in order to clarify the recognition of deferred tax assets on unrealized losses related to the measurement of debt instruments at fair value.

The adoption of these amendments had no impact on the consolidated financial statements at December 31, 2017.

Amendments to IAS 7 (Statement of cash flows)—Disclosure initiative

In January 2016, IASB issued some amendments to IAS 7 (Statement of cash flows). Such amendments are intended to supply additional disclosures in order to enable the financial statement users to evaluate changes (cash and non-cash flows) of liabilities arising from financing activities, showing the reconciliation between opening and closing balance of such liabilities:

· changes from financing cash flows;

· changes arising from obtaining or losing control of subsidiaries or other businesses;

· the effect of changes in foreign exchange rates;

· changes in fair values; and

· other changes.

The adoption of these amendments impacted only the consolidated financial statement disclosure at December 31, 2017.

Improvements to IFRSs 2014–2016 Cycle—Amendments to IFRS 12

In December 2016 the IASB issued some improvements to IFRSs, for the 2014–2016 Cycle. In particular the amendments to IFRS 12—Disclosure of Interest in Other Entities clarify the scope of IFRS 12, specifying that the disclosure requirements in the standard apply to all entity’s interests that are classified as held for sale, as held for distribution or as discontinued operations in accordance with IFRS 5—Non-current Assets Held for Sale and Discontinued Operations.

The adoption of these amendments had no impact on the consolidated financial statements at December 31, 2017.

New Standards and Interpretations issued by IASB not yet in force

At the date of preparation of the accompanying consolidated financial statements, the following IFRS, Amendments and IFRIC interpretations had been published, but their application was not yet mandatory:

IASB/IFRIC documents	Mandatory application: annual periods beginning on or after
IFRS 15 (Revenue from Contracts with Customers)	January 1, 2018
Clarifications to IFRS 15 (Revenue from Contracts with Customers)	January 1, 2018
IFRS 9 (Financial Instruments)	January 1, 2018
IFRS 16 (Leases)	January 1, 2019
Improvements to IFRSs (2014–2016 Cycle)—Amendments to IAS 28	January 1, 2018
Amendments to IFRS 2 (Share based Payment)	January 1, 2018
IFRIC 22 (Foreign Currency Transactions and Advance Consideration)	January 1, 2018
Amendments to IAS 40 (Transfers of Investment Property)	January 1, 2018
IFRIC 23 (Uncertainty over income tax treatments)	January 1, 2019
Amendments to IFRS 9: Prepayment features with negative compensation	January 1, 2019
Amendments to IAS 28: Long-term interests in Investments in associates and joint ventures	January 1, 2019
Improvements to IFRSs (2015–2017 Cycle)	January 1, 2019
Amendments to IAS 19: Plan Amendment, Curtailment or Settlement	January 1, 2019
IFRS 17: Insurance contracts	January 1, 2021

IFRS 15 (Revenues from contracts with customers)

IFRS 15 (Clarifications to such standard included) will replace the standards that currently govern revenue recognition, namely IAS 18 (Revenue), IAS 11 (Construction contracts) and the related interpretations on revenue recognition (IFRIC 13 Customer loyalty programmes, IFRIC 15 Agreements for the construction of real estate, IFRIC 18 Transfers of assets from customers and SIC 31 Revenue—Barter transactions involving advertising services).

IFRS 15 is applied retrospectively starting from January 1, 2018. The TIM Group will apply the modified retrospective approach with the cumulative effect of the first-time adoption of the standard as an adjustment to the opening shareholders’ equity leaving the previous comparative periods unchanged.

At the TIM Group level, IFRS 15 impacts the revenue recognition of fixed and mobile offerings as well as the recognition of contractual costs. There are no impacts on cash flows. The main differences with respect to the current accounting principles are as follows:

· bundled offerings (package of goods and services): the allocation of the contractual discount to the performance obligations involves an anticipation in the recognition of revenues with the consequent recording of a contract asset;

· activation/installation revenues: under current accounting principles, they are deferred over the expected term of the customer relationship; under IFRS 15, these kinds of revenue, not being related to separate performance obligations, shall be allocated to the various contractual obligations with a consequent anticipation in the recognition of revenue;

· contract costs (costs of obtaining a contract and costs of fulfilling a contract): under current accounting principles, they are, for the majority, already capitalized/deferred and charged to the separate income statement on the basis of the expected term of the customer relationship as well as of the kind of customers and taking into account the matching principle. With the adoption of IFRS 15, this approach will be substantially confirmed. Based on the analyses carried out, however, some impacts are expected, in particular in relation to:

· definition of kinds of deferrable costs which will be revised in order to exclude costs, if any, that don’t meet the requirements of paragraph 97 of IFRS 15;

· the portion of costs of obtaining a contract that under current accounting standards is capitalized (Intangible assets with a finite useful life) and amortized, under IFRS 15 will be reclassified to prepaid expenses involving lower amortization costs and higher costs for services, without any impact on the shareholders’ equity and profit (loss) before tax at the transition date.

TIM Group expects that the adoption of the new standard will have an overall non-significant net impact on shareholders’ equity at January 1, 2018 (transition date) arising from the combined effect of:

· recording of the contract asset associated with the early recognition of revenue for bundle offerings and new accounting model of activation/installation revenues with an overall increase in the shareholders’ equity;

· revision of deferrable contractual costs with a negative impact on shareholders’ equity.

A precise and accurate estimate of the impacts on shareholders’ equity at the transition date is currently being defined. Such impacts are not indicative of future developments, as the business model and the marketing and contractual policies with the customers could change with consequent impacts on revenues and related costs.

The process of implementing the new accounting principle has involved significant updates and changes on IT systems, modification and updating of control and compliance models and related processes.

IFRS 9 (Financial Instruments)

IFRS 9 sets out the principles for the classification, measurement and derecognition of financial assets and liabilities, the impairment of financial instruments as well as hedge accounting.

IFRS 9 is applied starting from January 1, 2018. TIM Group has decided to apply the following:

· to defer the application of the hedge accounting model under IFRS 9 and to continue the adoption of the IAS 39 model;

· not to restate the comparative periods in the year of initial application of the new standard.

At the TIM Group level, IFRS 9 mainly impacts the determination of expected losses on trade receivables and other financial assets (change from the incurred loss model provided for by IAS 39 to the expected credit loss model).

TIM Group expects that the adoption of the new standard will have a non-significant negative impact on shareholders’ equity at the transition date, mainly due to higher impairment losses on trade receivables and other financial assets.

A precise and accurate estimate of the impacts on shareholders’ equity at the transition date is currently being defined. Such impacts are not indicative of future developments, as the business model and the contractual policies could change with consequent impacts on the financial statements.

The process of implementing the new accounting principle has involved significant updates and changes on IT systems, modification and updating of control and compliance models and related processes.

IFRS 16 (Leases)

IFRS 16 supersedes IAS 17 (Leases) and the related interpretations (IFRIC 4 Determining whether an arrangement contains a lease; SIC 15 Operating leases—Incentives; SIC 27 Evaluating the substance of transactions involving the legal form of a lease).

For passive lease contracts that meet the requirements of the new standard (which does not distinguish between operating and finance leases), IFRS 16 provides for the recording of a liability in the statement of financial position, equal to the present value of future lease payments, and a correspondent right-of-use asset.

IFRS 16 is applied retrospectively starting from January 1, 2019; TIM Group intends to apply the simplified retrospective approach with the recording, for leases previously classified—under IAS 17— as operating leases, of the lease liability and the corresponding right-of-use asset measured at the present value of the remaining lease payments at the transition date.

The main impacts on the TIM Group consolidated financial statements, still under evaluation, are detailed as follows:

· statement of financial position: higher non-current assets due to the recording of the “right-of-use assets” against higher financial lease liabilities;

· separate income statement: different nature, qualification and classification of expenses (amortisation of the “right-of-use assets” and “finance expenses for interest” instead of “Rent and leases—fees for operating leases”, as per IAS 17) with a consequent positive impact on operating profitability. Furthermore, the combination of the straight-line amortisation of the “right-of-use asset” and the effective interest rate method applied to the lease payables entail, compared to IAS 17, higher expenses in the income statement in the first years of the lease contract and decreasing costs in the last years.

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Scope of Consolidation

12 Months Ended

Dec. 31, 2017

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Scope of Consolidation

NOTE 3—SCOPE OF CONSOLIDATION

Investments in consolidated subsidiaries

Composition of the Group

TIM holds a majority of the voting rights in all the subsidiaries included in the scope of consolidation.

A complete list of consolidated subsidiaries is provided in the Note “List of companies of TIM Group”.

Scope of consolidation

The changes in the scope of consolidation at December 31, 2017 compared to December 31, 2016 are listed below.

These changes did not have any significant impacts on the Consolidated Financial Statements of the TIM Group at December 31, 2017.

Subsidiaries exiting/merged into the scope of consolidation:

Company		Business Unit	Month
Exit:
TIERRA ARGENTEA S.A.	Liquidated	Other Operations		May 2017
TELECOM ITALIA FINANCE IRELAND Limited	Liquidated	Other Operations		October 2017
Merger:
BEIGUA S.r.l.	Merged into Persidera S.p.A.	Domestic		July 2017
TI SPARKLE IRELAND TELECOMMUNICATIONS Limited	Merged into Telecom Italia Sparkle S.p.A.	Domestic		July 2017
OLIVETTI MULTISERVICES S.p.A.	Merged into TIM S.p.A.	Domestic		October 2017
TIM REAL ESTATE S.r.l.	Merged into TIM S.p.A.	Domestic		October 2017
TMI TELEMEDIA INTERNATIONAL DO BRASIL LTDA	Merged into TI Sparkle Brasil Participações Ltda	Domestic		October 2017

The breakdown by number of subsidiaries and associates of the TIM Group is as follows:

	As of December 31, 2017
Companies	Italy		Outside Italy		Total
subsidiaries consolidated line-by-line		22		44		66
joint ventures accounted for using the equity method		1		—		1
associates accounted for using the equity method		19		—		19
Total companies		42		44		86

	As of December 31, 2016
Companies	Italy		Outside Italy		Total
subsidiaries consolidated line-by-line		25		48		73
joint ventures accounted for using the equity method		1		—		1
associates accounted for using the equity method		19		—		19
Total companies		45		48		93

Further details are provided in the Note “List of companies of the TIM Group”.

Subsidiaries with significant non-controlling interests

At December 31, 2017, the TIM Group held investments in subsidiaries, with significant non-controlling interests, in relation to the TIM Brasil group.

The figures provided below, stated before the netting and elimination of intragroup accounts, have been prepared in accordance with IFRS and reflect adjustments made at the acquisition date to align the assets and liabilities acquired to their fair value.

TIM Brasil group—Brazil Business Unit

Non-controlling interests held at December 31, 2017 amounted to 33.4% of the share capital of Tim Participações, which in turn holds 100% of the share capital of the operating companies Tim Celular S.A. and Tim S.A. (formerly Intelig Telecomunicações Ltda), equivalent to the corresponding share of voting rights.

Statement of Financial Position Data—TIM Brasil group

	Year ended December 31,
	2017		2016
	(millions of euros)
Non-current assets		6,819		7,822
Current assets		1,929		2,956
Total Assets		8,748		10,778
Non-current liabilities		1,703		2,726
Current liabilities		1,852		2,331
Total Liabilities		3,555		5,057
Equity		5,193		5,721
of which Non-controlling interests		1,556		1,705

Income Statement Data—TIM Brasil group

	Year ended December 31,
	2017		2016		2015
	(millions of euros)
Revenues		4,502		4,047		4,637
Profit (loss) for the year		340		194		324
of which Non-controlling interests		114		65		188

Financial Data—TIM Brasil group

In 2017, aggregate cash flows generated a negative amount of 744 million euros, primarily due to a negative exchange rate effect of 146 million euros, without which cash flow would have generated a negative 598 million euros. This result includes the effect of 257 million euros for the payment to the clean-up consortium of the 700 MHz spectrum, with respect to which rights of use were acquired in 2014.

In 2016, aggregate cash flows generated a positive 58 million euros, due to a positive exchange rate effect of 311 million euros, without which cash flow would have generated a negative 253 million euros.

Lastly, again with reference to the Tim Brasil group, the main risk factors with respect to the operations of the Tim Brasil group include:

· strategic risks (risks related to macroeconomic and political factors, as well as risks associated with foreign exchange restrictions and competition);

· operational risks (risks related to business continuity and development of the fixed and mobile networks, as well as risks associated with litigation and disputes);

· financial risks; and

· regulatory and compliance risks.

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Business Combinations

12 Months Ended

Dec. 31, 2017

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Business Combinations

NOTE 4—BUSINESS COMBINATIONS

YEAR 2017

In 2017, didn’t occurred business combination transactions, as defined in IFRS 3.

YEAR 2016

In 2016, there were no material business combination transactions, as defined in IFRS 3.

YEAR 2015

In 2015, there were no material business combination transactions, as defined in IFRS 3.

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Goodwill

12 Months Ended

Dec. 31, 2017

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Goodwill

NOTE 5—GOODWILL

Goodwill shows the following breakdown and changes during 2016 and 2017:

	As of December 31, 2015		Reclassification			Increase		Decrease		Impairments		Exchange differences		As of December 31, 2016
	(millions of euros)
Domestic		28,447		29			13								28,489
Core Domestic		28,035		29			13								28,077
International Wholesale		412													412
Brazil		907											216		1,123
Media		29		(29	)										—
Other operations		—													—
Total		29,383		—			13		—		—		216		29,612

	As of December 31, 2016		Reclassification		Increase		Decrease		Impairments		Exchange differences			As of December 31, 2017
	(millions of euros)
Domestic		28,489													28,489
Core Domestic		28,077													28,077
International Wholesale		412													412
Brazil		1,123										(150	)		973
Other operations		—													—
Total		29,612		—		—		—		—		(150	)		29,462

With respect to the acquisition of the company Noverca S.r.l. in October 2016, the goodwill provisionally recognized in 2016, amounting to 5 million euros, was confirmed following the completion of the price allocation process required by IFRS 3.

The gross carrying amounts of goodwill and the relative accumulated impairment losses from January 1, 2004 (date of allocation to the Cash Generating Units—CGUs) to December 31, 2017 and 2016 can be summarized as follows:

	As of December 31, 2017							As of December 31, 2016
	Gross carrying amount		Accumulated impairment losses			Net carrying amount		Gross carrying amount		Accumulated impairment losses			Net carrying amount
	(millions of euros)
Domestic		42,457		(13,968	)		28,489		42,457		(13,968	)		28,489
Core Domestic		42,045		(13,968	)		28,077		42,045		(13,968	)		28,077
International Wholesale		412		—			412		412		—			412
Brazil		1,204		(231	)		973		1,389		(266	)		1,123
Other operations		—		—			—		—		—			—
Total		43,661		(14,199	)		29,462		43,846		(14,234	)		29,612

The figures for the Brazil CGU are stated in euros, converted at the spot exchange rate at the closing date of the financial statements; the carrying amount of goodwill for the CGU corresponds to 3,854 million reais.

Goodwill is not subject to amortization, but it is tested for impairment at least annually. Accordingly, in preparing the 2017 Annual Report, the TIM Group conducted impairment tests on the recoverability of the goodwill, in accordance with the procedure adopted by the Group. The results showed that the recoverable amount of the assets at December 31, 2017 was higher than the net carrying amount for all the CGUs.

Recoverability testing was conducted at two levels: at the first level, the recoverable amount was estimated for the assets assigned to the individual cash generating units to which goodwill is allocated; at the second level, the assets of the Group as a whole were considered.

With respect to the first level test, goodwill was allocated to the following cash generating units (or groups of units):

Segment	Cash Generating Units (or groups of units)
Domestic	Core Domestic
	International Wholesale
Brazil	Tim Brasil

To measure the recoverable amount, value in use was used for the Core Domestic and International Wholesale CGUs, whereas for the Brazil CGU, fair value was used, based on market capitalization at the end of the reporting period.

The values used were expressed in the local currency, in EUR for the Domestic CGU and BRL for the Brazil CGU. For the Brazil CGU, the recoverable amount of the assets was denominated in the functional currency and subsequently translated at the spot exchange rate as of the reporting date.

Value in use estimates were made, in accordance with IAS 36 and with valuation principles and best practices, based on the expected cash flows in different scenarios. The various expected cash flows were then summarized into an average normal cash flow, determined with the aid of Experts (expert appraisers and industry experts) and based on the data from the 2018-2020 Industrial Plan approved by the Board of Directors. For the International Wholesale CGU, given that no additional risk factors are expected, the average expected cash flows coincided with Industrial Plan figures.

For the Core Domestic CGU, expected average cash flows were measured for the three years of the 2018-2020 Industrial Plan, plus an additional two years on the basis of extrapolated data, for which future cash flows were explicitly forecast for a period of five years (2018-2022). The extrapolation of data for 2021-2022 enabled market and competition trends that will become manifest beyond the time horizon of the 2018-2020 Industrial Plan to be captured.

For the estimate of the terminal value, the sustainable long-term cash flow was assumed to be the extrapolation of the estimated cash flow at 2022, adjusted as necessary to take into consideration a suitable level of long-term capital expenditure.

The Industrial Plan (2018-2020) incorporates valuations of risk factors and the actions adopted to mitigate them. In estimating future cash flows for the purposes of impairment testing, management decided to give a greater weighting to external data available and conduct additional challenges on specific risk factors by modifying the amount and/or distribution over time of future cash flows.

The cost of capital used to discount the future cash flows for estimating the value in use of the Core Domestic and International Wholesale CGUs was determined as follows:

· it was estimated using the Capital Asset Pricing Model (CAPM), which is one of the generally accepted application criteria referred to in IAS 36;

· it reflects the current market estimates of the time value of money and the specific risks of the groups of assets; it includes appropriate yield premiums for country risk and the risk associated with the depreciation of the currency of denomination of the cash flows;

· it was calculated using comparative market parameters to estimate the “Beta coefficient” and the weighting coefficient of the equity and debt capital components.

For each CGU, details are provided below on the weighted average cost of capital (WACC rate) used to discount the future cash flows and the equivalent rate before tax. Details are also provided on the growth rates used to estimate the residual value after the explicit forecast period (the G-Rates), expressed in nominal terms and related to the cash flows in their functional currency. Lastly, details are provided of the implicit capitalization rates, for each CGU, resulting from the difference between the cost of capital, after tax, and the G-Rate.

Principal parameters for the estimates of value in use

	Core Domestic		International Wholesale
	%		%
WACC		6.39		6.39
WACC before tax		8.52		8.31
Growth rate beyond the explicit period (g)		0.50		0.50
Capitalization rate (WACC -g )		8.02		7.81
Capex/Revenues, % perpetual		19.26		5.86

The growth rates of the terminal value “g” of the Domestic segment were estimated taking into account the expected outlook during the explicit forecast period and are consistent with the range of growth rates applied by analysts who monitor TIM shares.

Separate parameters for the various CGUs were also used to estimate the level of capital expenditure required to sustain the perpetual generation of cash flows after the explicit forecast period, according to the phase of capital expenditure, competitive positioning and the technological infrastructure operated.

The difference between the recoverable amounts and the net carrying amounts of the main CGUs considered totaled:

	Core Domestic		International Wholesale		Brazil
	(millions of euros)
Difference between values in use and carrying amounts		+4,465		+56		+2,552

In estimating the recoverable amounts, simulations were conducted on the results with respect to changes in the relevant parameters. Details are provided below of the variables which, considered separately and taking the others as constant, are needed to make the recoverable amount of the respective CGUs equal to their net carrying amount.

Parameters that make the value in use equal to the carrying amount

	Core Domestic		International Wholesale		Brazil
	%		%		%
WACC before tax		9.26		8.70
Capitalization rate (WACC - g)		8.76		8.20
Capex/Revenues, % on TV		23.08		6.34
Percentage change in the stock market price						(32.00	)

In addition to average normal cash flows, to account for the market operator’s perspective, sensitivity analyses were conducted on the risk factors identified with the Experts to determine the value in use of the Core Domestic CGU. The sensitivity analyses found that the recoverable amount was higher than the net carrying amount.

With respect to value testing at overall Group level, the sum of the recoverable amounts of all the CGUs was compared against the carrying amount of the net operating assets in the consolidated financial statements, after appropriate adjustments to take account of the cash flows of Central Functions not allocated to any CGU. No impairment losses were recorded at this additional second level of impairment testing.

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Intangible Assets with a Finite Useful Life

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Intangible Assets with a Finite Useful Life

NOTE 6—INTANGIBLE ASSETS WITH A FINITE USEFUL LIFE

Intangible assets with a finite useful life increased by 241 million euros compared to December 31, 2016. The breakdown and movements are as follows:

	As of December 31, 2015		Addition		Amortization			Impairment losses / Reversals			Disposals			Exchange Differences			Capitalized borrowing costs		Other changes			As of December 31, 2016
	(millions of euros)
Industrial patents and intellectual property rights		2,070		990		(1,243	)								206					435			2,458
Concessions, licenses, trademarks and similar rights		2,829		87		(393	)								89					242			2,854
Other intangible assets		83		128		(107	)								5								109
Work in progress and advance payments		1,498		436								(2	)		198			73		(673	)		1,530
Total		6,480		1,641		(1,743	)		—			(2	)		498			73		4			6,951
	As of December 31, 2016		Addition		Amortization			Impairment losses / Reversals			Disposals			Exchange Differences			Capitalized borrowing costs		Other changes			As of December 31, 2017
	(millions of euros)
Industrial patents and intellectual property rights		2,458		771		(1,263	)								(147	)				374			2,193
Concessions, licenses, trademarks and similar rights		2,854		140		(396	)								(96	)				248			2,750
Other intangible assets		109		157		(134	)								(5	)				7			134
Work in progress and advance payments		1,530		1,224					(30	)					(143	)		73		(539	)		2,115
Total		6,951		2,292		(1,793	)		(30	)		—			(391	)		73		90			7,192

Additions in 2017 included 272 million euros of internally generated assets (289 million euros in 2016). Further details are provided in the Note “Internally generated assets”.

Industrial patents and intellectual property rights at December 31, 2017 consisted mainly of application software purchased outright and user licenses acquired, amortized over a period between 2 and 5 years. They mainly related to TIM S.p.A. (1,223 million euros) and to the Brazil Business Unit (944 million euros).

Concessions, licenses, trademarks and similar rights at December 31, 2017 mainly related to:

· the remaining cost of telephone licenses and similar rights (1,689 million euros for TIM S.p.A., 464 million euros for the Brazil Business Unit);

· Indefeasible Rights of Use—IRU (393 million euros), mainly relating to companies of the Telecom Italia Sparkle group—International Wholesale (290 million euros) and the Parent (103 million euros);

· TV frequencies of the company Persidera in the Core Domestic segment (111 million euros). The user licenses for the frequencies used for digital terrestrial transmission will expire in 2032.

The net carrying amount of telephone licenses and similar rights (2,153 million euros) and their useful lives are detailed below:

Type of license	Net carrying amount at December 31, 2017 (millions of euros)		Amortization period (years)		Amortization charge for 2017 (millions of euros)
TIM S.p.A.:
UMTS		537		18		134
UMTS 2100 MHz		30		12		7
WiMax		5		15		1
LTE 1800 MHz		103		18		9
LTE 800 MHz		720		17		60
LTE 2600 MHz		79		17		7
GSM (extension)		17		3		34
Band 1452-1492 MHz		198		14		16
Tim Brasil group:
GSM and 3G (UMTS)		165		15		53
4G (LTE - 700 Mhz)		299		15		15

Other intangible assets at December 31, 2017 essentially consisted of capitalized mobile subscriber acquisition costs (SAC) of 110 million euros (78 million euros for the Parent and 32 million euros for the Brazil Business Unit), mainly related to commissions for the sales network, for a number of commercial deals that lock in customers for a set period. Subscriber acquisition costs are amortized over the underlying minimum contract period (between 12 or 36 months).

Work in progress and advance payments increased by 585 million euros. This item included the advance payment by TIM S.p.A. of 630 million euros for the extension of the user rights to the 900MHz and 1800MHz (GSM) bands, which will take effect from July 1, 2018 to December 31, 2029. As reported, this item included a part of the user rights for the 700MHz frequencies acquired in 2014 by the Tim Brasil group for a total of 2.9 billion reais (equal to around 1 billion euros). In 2017, part of the user rights, amounting to 251 million euros, came into operation and were consequently reclassified under the item “Concessions, licenses, trademarks and similar rights”.

Because more than 12 months are needed before the user rights can be used, the finance expenses directly attributable to rights have been capitalized since 2014. In 2017, the capitalized finance expenses totaled 73 million euros, at an annual interest rate of 9.48%. Expenses capitalized were deducted directly in the income statement from “Finance expenses—Interest expenses to banks”. Finally, write-downs of software development projects that were discontinued by the Parent amounted to 30 million euros.

Amortization and impairment losses have been recorded in the income statement as components of operating result.

The gross carrying amount, accumulated impairment losses and accumulated amortization at December 31, 2017 and 2016 can be summarized as follows:

	As of December 31, 2016
	Gross carrying amount		Accumulated impairment losses			Accumulated amortization			Net carrying amount
	(millions of euros)
Industrial patents and intellectual property rights		12,241		(7	)		(9,776	)		2,458
Concessions, licenses, trademarks and similar rights		7,017		(306	)		(3,857	)		2,854
Other intangible assets		447					(338	)		109
Work in progress and advance payments		1,532		(2	)					1,530
Total intangible assets with a finite useful life		21,237		(315	)		(13,971	)		6,951

	As of December 31, 2017
	Gross carrying amount		Accumulated impairment losses			Accumulated amortization			Net carrying amount
	(millions of euros)
Industrial patents and intellectual property rights		12,266		(7	)		(10,066	)		2,193
Concessions, licenses, trademarks and similar rights		7,044		(273	)		(4,021	)		2,750
Other intangible assets		522					(388	)		134
Work in progress and advance payments		2,145		(30	)					2,115
Total intangible assets with a finite useful life		21,977		(310	)		(14,475	)		7,192

In addition to the write-down of software projects under development, as reported above, the item “Industrial patents and intellectual property rights” included disposals related to the elimination or rewriting of software for applications and plant operation by the Parent, for a gross carrying amount of 519 million euros, while “Other intangible assets” included 62 million euros of gross disposals in relation to subscriber acquisition costs (SACs).

Impairment losses on “Concessions, licenses, trademarks and similar rights”, mainly relating to reporting periods prior to 2004, refer to the Indefeasible Rights of Use (IRU) for the transmission capacity and cables for international connections acquired by the Telecom Italia Sparkle group. The change in the amount shown for 2017 compared to the previous year was essentially due to the translation into euros of accounts denominated in US dollars and to the disposal of some assets with a residual carrying amount of zero.

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Tangible Assets (Owned and Under Finance Leases)

12 Months Ended

Dec. 31, 2017

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Tangible Assets (Owned and Under Finance Leases)

NOTE 7—TANGIBLE ASSETS (OWNED AND UNDER FINANCE LEASES)

Property, plant and equipment owned

Property, plant and equipment owned increased by 269 million euros compared to December 31, 2016. The breakdown and movements are as follows:

	As of December 31, 2015		Addition		Depreciation			Impairment losses / Reversals			Disposals			Exchange Differences		Other changes			As of December 31, 2016
	(millions of euros)
Land		171		21					(2	)					2		11			203
Buildings (civil and industrial)		444		87		(48	)					(1	)		4		23			509
Plant and equipment		10,909		2,113		(2,170	)					(17	)		457		417			11,709
Manufacturing and distribution equipment		41		11		(15	)										1			38
Other		378		93		(157	)					(5	)		28		54			391
Construction in progress and advance payments		716		824					(1	)		(1	)		54		(495	)		1,097
Total		12,659		3,149		(2,390	)		(3	)		(24	)		545		11			13,947

	As of December 31, 2016		Addition		Depreciation			Impairment losses / Reversals			Disposals			Exchange Differences			Other changes			As of December 31, 2017
	(millions of euros)
Land		203		6											(2	)		6			213
Buildings (civil and industrial)		509		10		(39	)								(3	)		11			488
Plant and equipment		11,709		2,601		(2,286	)		(8	)		(8	)		(332	)		373			12,049
Manufacturing and distribution equipment		38		12		(16	)											2			36
Other		391		88		(159	)					(2	)		(18	)		76			376
Construction in progress and advance payments		1,097		541					1			(1	)		(41	)		(543	)		1,054
Total		13,947		3,258		(2,500	)		(7	)		(11	)		(396	)		(75	)		14,216

Land comprises both built-up land and available land and is not subject to depreciation. The figure for December 31, 2017 refers primarily to TIM S.p.A. (178 million euros).

Buildings (civil and industrial) almost exclusively includes buildings for industrial use hosting telephone exchanges or for office use, and light constructions. The figure for 2017 mainly refers to TIM S.p.A. (450 million euros).

Plant and equipment includes the aggregate of all the structures used for the functioning of voice and data telephone services. The figure at December 31, 2017 was mainly attributable to TIM S.p.A. (9,183 million euros) and to companies of the Brazil Business Unit (2,059 million euros).

Manufacturing and distribution equipment consists of instruments and equipment used for the operations and maintenance of plants and equipment; the amount was essentially in line with the end of the prior year and primarily related to TIM S.p.A..

The item Other mainly consists of hardware for the functioning of the Data Center and for work stations, furniture and fixtures and, to a minimal extent, transport vehicles and office machines.

Construction in progress and advance payments refer to the internal and external costs incurred for the acquisition and internal production of tangible assets, which are not yet in use.

Additions in 2017 increased by 109 million euros compared to the previous year, driven mainly by higher capex in network innovation, and included 354 million euros of internally generated assets (350 million euros in 2016). Further details are provided in the Note “Internally generated assets”.

Depreciation, impairment losses and reversals have been recorded in the income statement as components of the operating result.

Depreciation for the years 2017, 2016 and 2015 was calculated on a straight-line basis over the estimated useful lives of the assets according to the following minimum and maximum rates:

Buildings (civil and industrial)	2%-5.55%
Plant and equipment	3%-50%
Manufacturing and distribution equipment	20%
Other	10%-50%

The gross carrying amount, accumulated impairment losses and accumulated depreciation at December 31, 2017 and 2016 can be summarized as follows:

	As of December 31, 2016
	Gross carrying amount		Accumulated impairment losses			Accumulated depreciation			Net carrying amount
	(millions of euros)
Land		207		(4	)					203
Buildings (civil and industrial)		1,705		(1	)		(1,195	)		509
Plant and equipment		69,372		(67	)		(57,596	)		11,709
Manufacturing and distribution equipment		304		(1	)		(265	)		38
Other		4,010		(2	)		(3,617	)		391
Construction in progress and advance payments		1,098		(1	)					1,097
Total		76,696		(76	)		(62,673	)		13,947

	As of December 31, 2017
	Gross carrying amount		Accumulated impairment losses			Accumulated depreciation			Net carrying amount
	(millions of euros)
Land		218		(5	)					213
Buildings (civil and industrial)		1,717					(1,229	)		488
Plant and equipment		68,964		(62	)		(56,853	)		12,049
Manufacturing and distribution equipment		310		(1	)		(273	)		36
Other		3,988		(2	)		(3,610	)		376
Construction in progress and advance payments		1,054								1,054
Total		76,251		(70	)		(61,965	)		14,216

Impairment losses on “Plant and equipment”, mainly relating to years prior to 2004, refer to the Telecom Italia Sparkle group. With respect to the gross carrying amounts of tangible assets, in 2017 TIM S.p.A. carried out disposals for a total amount of 2,223 million euros, mainly in relation to fully depreciated assets. Disposals mainly involved plant and equipment for around 2,188 million euros.

Assets held under finance leases

Assets held under finance lease decreased by 82 million euros compared to December 31, 2016. The breakdown and movements are as follows:

	As of December 31, 2015		Addition		Change in finance lease contracts		Depreciation			Exchange Differences		Other changes			As of December 31, 2016
	(millions of euros)
Land		16														16
Buildings (civil and industrial)		1,880		23		70		(125	)				(13	)		1,835
Plant and equipment		284				28		(17	)		69		1			365
Other		7				134		(16	)							125
Construction in progress and advance payments		21		63									(12	)		72
Total		2,208		86		232		(158	)		69		(24	)		2,413

	As of December 31, 2016		Addition		Change in finance lease contracts		Depreciation			Exchange differences			Other changes			As of December 31, 2017
	(millions of euros)
Land		16															16
Buildings (civil and industrial)		1,835		47		2		(130	)					14			1,768
Plant and equipment		365		72		14		(21	)		(43	)		(34	)		353
Other		125				52		(29	)		(1	)		(9	)		138
Construction in progress and advance payments		72		32										(48	)		56
Total		2,413		151		68		(180	)		(44	)		(77	)		2,331

The additions consisted of the acquisition of IRU transmission capacity, due to full payment at the beginning of the contract, and improvements and incremental expenses incurred for movable and immovable third-party assets used on the basis of finance lease agreements.

The changes in financial leasing contracts mainly related to TIM S.p.A. (54 million euros) and only for a residual amount to the Brazil Business Unit.

The item Buildings (civil and industrial) includes buildings under long rent contracts and related building adaptations, almost exclusively attributable to TIM S.p.A..

The item Plant and equipment mainly includes the recognition of the value of the telecommunications towers sold by the Tim Brasil group to American Tower do Brasil and subsequently repurchased in the form of finance lease.

Other changes include changes to the carrying amount deriving from revisions of estimates to take into account significant changes between estimated costs at the start of the contracts and the costs effectively incurred.

The item Other mainly comprises finance leases on vehicles. In 2017, 3,583 new leases on industrial vehicles were negotiated by the Parent, resulting in an impact on the balance sheet at December 31, 2017 of 52 million euros in terms of higher tangible assets and related payables for financial leases.

Depreciation and impairment losses have been recorded in the income statement as components of the operating result.

The gross carrying amount, accumulated impairment losses and accumulated depreciation at December 31, 2017 and 2016 can be summarized as follows:

	As of December 31, 2016
	Gross carrying amount		Accumulated impairment losses			Accumulated depreciation			Net carrying amount
	(millions of euros)
Land		16								16
Buildings (civil and industrial)		3,330		(27	)		(1,468	)		1,835
Plant and equipment		394					(29	)		365
Other		164					(39	)		125
Construction in progress and advance payments		72								72
Total		3,976		(27	)		(1,536	)		2,413

	As of December 31, 2017
	Gross carrying amount		Accumulated impairment losses			Accumulated depreciation			Net carrying amount
	(millions of euros)
Land		16								16
Buildings (civil and industrial)		3,391		(27	)		(1,596	)		1,768
Plant and equipment		397					(44	)		353
Other		200					(62	)		138
Construction in progress and advance payments		56								56
Total		4,060		(27	)		(1,702	)		2,331

At December 31, 2017 and 2016, finance lease payments due in future years and their present value are as follows:

	As of December 31,
	2017				2016
	Minimum lease payments		Present value of minimum lease payments		Minimum lease payments		Present value of minimum lease payments
	(millions of euros)
Within 1 year		271		234		298		230
From 2 to 5 years		1,031		691		1,088		707
Beyond 5 years		2,878		1,391		3,123		1,539
Total		4,180		2,316		4,509		2,476

	As of December 31,
	2017			2016
	(millions of euros)
Future net minimum lease payments		4,180			4,509
Interest portion		(1,864	)		(2,033	)
Present value of lease payments		2,316			2,476
Financial lease liabilities		2,430			2,636
Financial receivables for lease contracts		(114	)		(160	)
Total net finance lease liabilities		2,316			2,476

At December 31, 2017, the inflation adjustment to finance lease payments was 13 million euros (16 million euros at December 31, 2016) and related to TIM S.p.A.

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Investments

12 Months Ended

Dec. 31, 2017

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Investments

NOTE 8—INVESTMENTS

INVESTMENTS IN ASSOCIATES AND JOINT VENTURES ACCOUNTED FOR USING THE EQUITY METHOD

Investments in associates and joint ventures that have been accounted for using the equity method include:

	As of December 31,
	2017		2016
	(millions of euros)
Tiglio I		7		8
NordCom		5		5
W.A.Y.		3		3
Others		2		2
Total Associates		17		18
Alfiere		—		—
Total Joint Ventures		—		—
Total Investments accounted for using the equity method		17		18

The changes in this item are broken down as follows:

	As of December 31, 2015		Investments		Disposals and reimbursements of capital		Valuation using equity method			Other changes		As of December 31, 2016
	(millions of euros)
Tiglio I S.r.l		8											8
NordCom		4						1					5
W.A.Y.		3											3
Others		3						(1	)				2
Total Associates		18		—		—		—			—		18
Alfiere		23		—		—		(23	)		—		—
Total Joint Ventures		23		—		—		(23	)		—		—
Total Investments accounted for using the equity method		41		—		—		(23	)		—		18

	As of December 31, 2016		Investments		Disposals and reimbursements of capital		Valuation using equity method			Other changes		As of December 31, 2017
	(millions of euros)
Tiglio I S.r.l		8						(1	)				7
NordCom		5											5
W.A.Y.		3											3
Others		2											2
Total Associates		18		—		—		(1	)		—		17
Alfiere		—
Total Investments accounted for using the equity method		18		—		—		(1	)		—		17

The item joint ventures related to the investment in Alfiere S.p.A., a company that owns several buildings in the EUR area in Rome, whose value was essentially written down to nil in 2016.

The financial statements as at December 31, 2017 of Alfiere S.p.A. are currently not available. The main aggregated figures prepared in accordance with IFRS with respect to the portion attributable to the TIM Group show amounts referring the financial statements for 2016.

	2016
	Alfiere S.p.A.			TIM Group’s share 50%
	(millions of euros)
Non-current assets		157			78.5
Current assets		3			1.5
Total assets		160			80.0
Non-current liabilities		149			74.5
Current liabilities		15			7.5
Total liabilities		164			82.0
Equity		(4.0	)		(2.0	)
Total Equity and liabilities		160.0			80.0
Profit (loss) for the year		(46.0	)		(23.0	)

The list of investments that have been accounted for using the equity method is presented in the Note “List of companies of the TIM Group”.

Investments in associates that have been accounted for using the equity method of the TIM Group are not material either individually or in the aggregate form.

INVESTMENTS IN STRUCTURED ENTITIES

TIM Group does not hold investments in structured entities.

OTHER INVESTMENTS

Other investments refer to the following:

	As of December 31, 2015		Investments		Disposals and reimbursements of capital			Measurement at fair value			Other changes		As of December 31, 2016
	(millions of euros)
Assicurazioni Generali		3							(1	)				2
Fin.Priv.		19							(2	)				17
Northgate Telecom Innovations Partners L.P.		9		5										14
Others		14				(1	)							13
Total		45		5		(1	)		(3	)		—		46

	As of December 31, 2016		Investments		Disposals and reimbursements of capital		Measurement at fair value		Other changes			As of December 31, 2017
	(millions of euros)
Assicurazioni Generali		2						1					3
Fin.Priv.		17						3					20
Northgate Comms Tech Innovations Partners L.P. (ex Northgate Telecom Innovations Partners L.P.)		14		3									17
Others		13								(2	)		11
Total		46		3		—		4		(2	)		51

Other changes in 2017 included the write-down of a minor investment held.

In accordance with IAS 39, other investments represent available-for-sale financial assets.

Further details on Financial Instruments are provided in the Note “Supplementary disclosure on financial instruments”.

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Financial Assets (Non-Current and Current)

12 Months Ended

Dec. 31, 2017

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Financial Assets (Non-Current and Current)

NOTE 9—FINANCIAL ASSETS (NON-CURRENT AND CURRENT)

Financial assets (non-current and current) were broken down as follows:

		As of December 31,
		2017		2016
		(millions of euros)
Non-current financial assets
Securities, financial receivables and other non-current financial assets:
Securities other than investments					1
Financial receivables for lease contracts			69		101
Hedging derivatives relating to hedged items classified as non-current assets/liabilities of a financial nature			1,495		2,497
Receivables from employees			47		48
Non-hedging derivatives			7		39
Other financial receivables			150		12
Total non-current financial assets	(A)		1,768		2,698
Current financial assets
Securities other than investments
Held for trading					140
Held to maturity
Available for sale			993		1,379
			993		1,519
Financial receivables and other current financial assets:
Liquid assets with banks, financial institutions and post offices (with a maturity greater than 3 months)			100		100
Receivables from employees			16		15
Financial receivables for lease contracts			45		59
Hedging derivatives relating to hedged items classified as current assets/liabilities of a financial nature			260		185
Non-hedging derivatives			15		28
Other short-term financial receivables			1		2
			437		389
Cash and cash equivalents			3,575		3,964
Total current financial assets	(B)		5,005		5,872
Financial assets relating to Discontinued operations/Non-current assets held for sale	(C)		—		—
Total non-current and current financial assets	(A+B+C)		6,773		8,570

Further details on Financial Instruments are provided in the Note “Supplementary disclosure on financial instruments”.

Financial receivables for lease contracts refer to:

· Teleleasing lease contracts entered into directly with customers in previous years and for which TIM is the guarantor;

· the portion of rental contracts, with the rendering of accessory services;

· finance leases on user rights and equipment.

Hedging derivatives relating to hedged items classified as non-current assets/liabilities of a financial nature mainly refer to the mark-to-market spot valuation component of the hedging derivatives, whereas Hedging derivatives relating to hedged items classified as current assets/liabilities of a financial nature mainly consist of accrued income on derivative contracts.

The Non-hedging derivatives consist of the mark-to-market component of the non-hedging derivatives of the Brazil Business Unit.

Further details are provided in the Note “Derivatives”.

Other non-current financial receivables include 150 million euros deposited with Deutsche Bank, maturing in June 2019.

Securities other than investments, included in current assets and classified as available-for-sale due beyond three months, included:

· 800 million euros of listed securities, of which 276 million euros of Italian treasury bonds purchased respectively by TIM S.p.A. (256 million euros) and Telecom Italia Finance S.A. (20 million euros) and 524 million euros of bonds purchased by Telecom Italia Finance S.A. with different maturities, all with an active market and consequently readily convertible into cash. The purchases of the above government bonds, which, pursuant to Consob Communication no. DEM/11070007 of August 5, 2011, represent investments in “Sovereign debt securities”, have been made in accordance with the Guidelines for the “Management and control of financial risk” adopted by the TIM Group since August 2012, in replacement of the previous policies in force;

· 193 million euros of investments in two monetary funds made by the Brazil Business Unit.

The item “Liquid assets with banks, financial institutions and post offices (maturing beyond 3 months)” includes two deposits of 50 million euros held with Bank of China and Banca Popolare di Sondrio, both of which mature in April 2018.

Cash and cash equivalents decreased by 389 million euros compared to December 31, 2016 and were broken down as follows:

	As of December 31,
	2017		2016
	(millions of euros)
Liquid assets with banks, financial institutions and post offices		2,828		2,491
Checks, cash and other receivables and deposits for cash flexibility		2		1
Securities other than investments (due within 3 months)		745		1,472
Total		3,575		3,964

The different technical forms of investing available cash at December 31, 2017 had the following characteristics:

· maturities: all deposits have a maximum maturity date of three months;

· counterparty risk: deposits have been made with leading high-credit-quality banks and financial institutions with a rating of at least BBB- according to Standard & Poor’s with respect to Europe, and with leading local counterparts with respect to investments in South America;

· Country risk: deposits have been made mainly in major European financial markets.

Securities other than investments (due within 3 months) included 744 million euros (1,471 million euros at December 31, 2016) of Brazilian bank certificates of deposit (Certificado de Depósito Bancário) held by the Brazil Business Unit with premier local banking and financial institutions.

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Miscellaneous Receivables and Other Non-Current Assets

12 Months Ended

Dec. 31, 2017

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Miscellaneous Receivables and Other Non-Current Assets

NOTE 10—MISCELLANEOUS RECEIVABLES AND OTHER NON-CURRENT ASSETS

Miscellaneous receivables and other non-current assets increased by 200 million euros compared to December 31, 2016. They included:

	As of December 31,
	2017				2016
			Of which IAS 39 Financial Instruments				Of which IAS 39 Financial Instruments
	(millions of euros)
Miscellaneous receivables and other non-current assets:
Miscellaneous receivables		704		371		763		399
Medium/long-term prepaid expenses		1,718				1,459
Total		2,422		371		2,222		399

Miscellaneous receivables and other non-current assets amounted to 2,422 million euros (2,222 million euros at December 31, 2016) and included income tax receivables of 96 million euros (113 million euros at December 31, 2016).

Miscellaneous receivables mainly related to the Brazil Business Unit (651 million euros; 696 million euros at December 31, 2016) and included receivables for court deposits of 349 million euros (382 million euros at December 31, 2016).

Medium/long-term prepaid expenses totaled 1,718 million euros (1,459 million euros at December 31, 2016), mainly relating to the deferral of costs connected to the activation and acquisition of telephone contracts by the Domestic Business Unit.

Further details on Financial Instruments are provided in the Note “Supplementary disclosure on financial instruments”.

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Income Taxes (Current and Deferred)

12 Months Ended

Dec. 31, 2017

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Income Taxes (Current and Deferred)

NOTE 11—INCOME TAXES (CURRENT AND DEFERRED)

Income tax receivables

Non-current and current income tax receivables at December 31, 2017 amounted to 173 million euros (207 million euros at December 31, 2016).

Specifically, they consisted of:

· non-current income tax receivables of 96 million euros (113 million euros at December 31, 2016);

· current income tax receivables of 77 million euros (94 million euros at December 31, 2016), mainly relating to companies belonging to the Brazil Business Unit (69 million euros) and to the Domestic Business Unit (5 million euros).

Deferred tax assets and deferred tax liabilities

The net balance of 728 million euros at December 31, 2017 (584 million euros at December 31, 2016) breaks down as follows.

	As of December 31,
	2017			2016
	(millions of euros)
Deferred tax assets		993			877
Deferred tax liabilities		(265	)		(293	)
Total		728			584

Deferred tax assets mainly consisted of 939 million euros for the Domestic Business Unit (812 million euros at December 31, 2016).

Deferred tax liabilities mainly consisted of 174 million euros for Telecom Italia Capital (208 million euros at December 31, 2016), 54 million euros for the Domestic Business Unit (38 million euros at December 31, 2016) and 25 million euros for the Brazil Business Unit (32 million euros at December 31, 2016).

Since the presentation of deferred tax assets and liabilities in the financial statements takes into account the offsets by legal entity when applicable, the composition of the gross amounts before offsets is presented below:

	As of December 31,
	2017			2016
	(millions of euros)
Deferred tax assets		1,429			1,294
Deferred tax liabilities		(701	)		(710	)
Total		728			584

The temporary differences which made up this line item at December 31, 2017 and 2016, as well as the movements during 2017 were as follows:

	As of December 31, 2016			Recognized in profit or loss			Recognized in equity			Change in scope of consolidation and other changes			As of December 31, 2017
	(millions of euros)
Deferred tax assets:
Tax loss carryforwards		72			(33	)					(7	)		32
Derivatives		591			(7	)		5						589
Provision for bad debts		154			(6	)					(6	)		142
Provisions		274			187						(9	)		452
Taxed depreciation and amortization		101			5									106
Other deferred tax assets		102			(2	)		(2	)		10			108
Total		1,294			144			3			(12	)		1,429
Deferred tax liabilities:
Derivatives		(411	)		8			(21	)		2			(422	)
Business combinations—for step-up of net assets in excess of tax basis		(142	)		5						6			(131	)
Deferred gains		(4	)		2									(2	)
Accelerated depreciation		(28	)		13						1			(14	)
Other deferred tax liabilities		(125	)		(22	)					15			(132	)
Total		(710	)		6			(21	)		24			(701	)
Total net deferred tax assets (liabilities)		584			150			(18	)		12			728

The expirations of deferred tax assets and deferred tax liabilities at December 31, 2017 were as follows:

	Within 1 year			Beyond 1 year			Total at December 31, 2017
	(millions of euros)
Deferred tax assets		423			1,006			1,429
Deferred tax liabilities		(28	)		(673	)		(701	)
Total net deferred tax assets (liabilities)		395			333			728

At December 31, 2017, the TIM Group had unused tax loss carryforwards of 2,306 million euros mainly relating to the Brazil Business Unit and the company Telecom Italia Finance with the following expiration dates:

Year of expiration	(millions of euros)
2018		1
2019		—
2020		—
2021		—
2022		—
Expiration after 2022		8
Without expiration		2,297
Total unused tax loss carryforwards		2,306

Unused tax loss carryforwards considered in the calculation of deferred tax assets amounted to 91 million euros at December 31, 2017 (193 million euros at December 31, 2016) and mainly related to the Brazil Business Unit. Deferred tax assets were recognized as it was considered probable that taxable income will be available in the future against which the tax losses can be utilized.

On the other hand, deferred tax assets of 647 million euros (733 million euros at December 31, 2016) were not recognized on 2,215 million euros of tax loss carryforwards since, at the reporting date, their recoverability was not considered probable.

At December 31, 2017, deferred tax liabilities were not recognized on approximately 0.9 billion euros of tax-suspended reserves and undistributed earnings of subsidiaries, because the TIM Group is in a position to control the timing of the distribution of those reserves and it is probable that those accumulated earnings will not be distributed in the foreseeable future. The contingent liabilities relating to taxes that should be recognized, if these reserves are distributed, are in any case not significant.

Current income tax payables

Income tax payables amounted to 157 million euros (703 million euros at December 31, 2016). They break down as follows:

	At December 31,
	2017		2016
	(millions of euros)
Income tax payables:
Non-current		45		66
Current		112		637
Total		157		703

Specifically, the non-current portion, amounting to 45 million euros, related entirely to the Brazil Business Unit, while the current portion, amounting to 112 million euros, related primarily to both the Domestic Business Unit (58 million euros) and to the Brazil Business Unit (53 million euros).

Income tax expense

Income tax expense decreased by 490 million euros, down by 438 million euros on 2016 to 490 million euros in 2017, mainly due to the lower taxable base of the Parent TIM S.p.A., which benefited from tax exemptions and facilities under laws in force.

Income tax expenses breaks down as follows:

		2017			2016			2015
		(millions of euros)
Current taxes for the year			646			900			424
Net difference in prior years estimates			(6	)		(54	)		(6	)
Total current taxes			640			846			418
Deferred taxes			(150	)		34			(15	)
Total taxes on continuing operations	(A)		490			880			403
Total taxes on Discontinued operations/Non-current assets held for sale	(B)		—			48			320
Total income tax expense for the year	(A+B)		490			928			723

The reconciliation between the theoretical tax expense, using the IRES tax rate in force in Italy (24%), and the effective tax expense for the years ended December 31, 2017, 2016 and 2015 is the follows:

			2017			2016			2015
			(millions of euros)
Profit (loss) before tax from continuing operations				1,777			2,799			453
Theoretical income tax from continuing operations				426			770			125
Income tax effect on increases (decreases) in variations:
Tax losses of the year not considered recoverable				3			17			10
Tax losses from prior years not recoverable (recoverable) in future years				(2	)		(1	)		(16	)
Non-deductible goodwill impairment charge										66
Effect of change in IRES tax rate							25			31
Prior years’ IRES				(26	)		(38	)		(20	)
Brazil: different rate compared to theoretical rate in force in Italy				34			11			51
Brazil: incentive on investments in the north-east of the country				(31	)		(31	)		(25	)
Other net differences, Tax facilities included				(55	)		(26	)		69
Effective income tax recognized in income statement from continuing operations, excluding IRAP tax				349			727			291
IRAP tax				141			153			112
Total effective income tax recognized in income statement from continuing operations	(A	)		490			880			403
Effective income tax recognized in income statement from Discontinued operations/Non-current assets held for sale	(B	)		—			48			320
Total effective income tax recognized in income statements	(A+B	)		490			928			723

For the analysis of the tax burden related to the Profit (loss) before tax from continuing operations, the impact of IRAP tax has not been taken into consideration in order to avoid any distorting effect, since that tax only applies to Italian companies and is calculated on a tax base other than pre-tax profit.

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Inventories

12 Months Ended

Dec. 31, 2017

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Inventories

NOTE 12—INVENTORIES

Inventories increased by 20 million euros compared to December 31, 2016 and consisted of the following:

	As of December 31,
	2017		2016
	(millions of euros)
Raw materials and supplies		1		1
Work in progress and semi-finished products		3		3
Finished goods		286		266
Total		290		270

Inventories mainly consist of equipment, handsets and relative fixed and mobile telecommunications accessories, as well as office products, special printers and gaming terminals.

Inventories consisted of 259 million euros for the Domestic Business Unit (226 million euros at December 31, 2016) and 31 million euros for the Brazil Business Unit (42 million euros at December 31, 2016).

Inventories are net of a provision for loss of 13 million euros (27 million euros at December  31, 2016) and their reduction is due to the uses made by Olivetti.

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Trade and Miscellaneous Receivables and Other Current Assets

12 Months Ended

Dec. 31, 2017

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Trade and Miscellaneous Receivables and Other Current Assets

NOTE 13—TRADE AND MISCELLANEOUS RECEIVABLES AND OTHER CURRENT ASSETS

Trade and miscellaneous receivables and other current assets increased by 467 million euros compared to December 31, 2016 and were broken down as follows:

	As of December 31,
	2017				2016
			Of which IAS 39 Financial Instruments				Of which IAS 39 Financial Instruments
	(millions of euros)
Amounts due on construction contracts		34				33
Trade receivables:
Receivables from customers		2,528		2,528		3,110		3,110
Receivables from other telecommunications operators		972		972		815		815
		3,500		3,500		3,925		3,925
Miscellaneous receivables and other current assets:
Other receivables		645		154		784		166
Trade and miscellaneous prepaid expenses		780				684
		1,425		154		1,468		166
Total		4,959		3,654		5,426		4,091

Further details on Financial Instruments are provided in the Note “Supplementary disclosure on financial instruments”.

The aging of financial instruments included in “Trade and miscellaneous receivables and other current assets” at December 31, 2017 and December 31, 2016 was as follows:

							Overdue:
	As of December 31, 2017		Total Current		Total overdue		0-90 days		91-180 days		181-365 days		More than 365 days
	(millions of euros)
Trade and miscellaneous receivables and other current assets		3,654		2,781		873		300		178		188		207

							Overdue:
	As of December 31, 2016		Total Current		Total overdue		0-90 days		91-180 days		181-365 days		More than 365 days
	(millions of euros)
Trade and miscellaneous receivables and other current assets		4,091		3,109		982		373		162		186		261

Current receivables declined by 328 million euros compared to December 31, 2016; the decrease was essentially attributable to TIM S.p.A. and the Brazil Business Unit. For the Parent, the decline amounted to 122 million euros and was mainly driven by higher disposals without recourse during the year. For the Brazil Business Unit, the decline amounted to 180 million euros and included a negative exchange difference of approximately 83 million euros.

Overdue receivables decreased by 109 million euros compared to December 31, 2016. Specifically, the Brazil Business Unit reported a drop of 30 million euros, but this included a negative exchange difference of around 13 million euros, without which there would have been a reduction of around 17 million euros. The drop in overdue receivables was also driven by Olivetti S.p.A. in the “0-90 days” bracket and by TIM S.p.A. in the “More than 365 days” bracket.

The sharp drop in the “More than 365 days” bracket for TIM S.p.A. (-53 million euros) was positively driven by settlement agreements reached with other TLC operators and with the Italian Public Administration, as well as by the improvement in collections from Top customers.

Trade receivables amounted to 3,500 million euros compared to 3,925 million euros at December 31, 2016 and are stated net of the provision for bad debts of 597 million euros compared to 648 million euros at December 31, 2016. They included 43 million euros (82 million euros at December 31, 2016) of medium/long-term receivables, principally in respect of agreements for the sale of Indefeasible Rights of Use (IRU).

Trade receivables mainly related to 2,425 million euros in trade receivables for TIM S.p.A. and 646 million euros for the Brazil Business Unit.

Movements in the provision for bad debts were as follows:

	2017			2016
	(millions of euros)
At January 1		648			614
Provision charges to the income statement		242			233
Utilization and decreases		(278	)		(220	)
Exchange differences and other changes		(15	)		21
At December 31		597			648

The amount of the provision consisted of:

· 211 million euros (279 million euros at December 31, 2016) of specific write-downs made by identifying the individual credit positions that carry particular elements of risk;

· 386 million euros (369 million euros at December 31, 2016) of write-downs calculated using estimated average rates for uncollectable charges for the relevant customer segment.

Other receivables amounted to 645 million euros (784 million euros at December 31, 2016) and were net of a provision for bad debts of 54 million euros (72 million euros at December 31, 2016). Details are as follows:

	As of December 31,
	2017		2016
	(millions of euros)
Advances to suppliers		69		41
Receivables from employees		12		26
Tax receivables		135		228
Receivables for grants from the government and public entities		207		242
Sundry receivables		222		247
Total		645		784

Tax receivables included, inter alia, 111 million euros relating to the Brazil Business Unit, primarily in connection with reference to local indirect taxes, and 23 million euros relating to the Domestic Business Unit, partly represented by tax returns credits, other taxes credits, credits for taxes and accessory charges unduly collected by tax authorities and currently subject to litigation, and also the VAT receivable on the purchase of cars and related accessories for which refunds were requested under Italian Decree Law 258/2006, converted with amendments by Italian Law 278/2006.

Receivables for grants from the Italian government and public entities (207 million euros) mainly relate to Ultra-Broadband-UBB and Broadband-BB projects. The grants are recognized in the income statement when the related plants become ready for use upon satisfaction of specific requirements for each band.

Sundry receivables mainly included:

· receivables from factoring companies, for disposals with recourse totaling 60 million euros;

· receivables from social security and assistance agencies due to TIM S.p.A. of 24 million euros;

· miscellaneous receivables due to TIM S.p.A. from other licensed TLC operators (45 million euros).

Trade and miscellaneous prepaid expenses mainly related to the Parent, and specifically included 513 million euros (427 million of euro on December 31, 2016) for the deferral of costs attributable to the activation and acquisition of new contracts with customers, 30 million euros for building leases (32 million of euro on December 31, 2016), 142 million euros for rent and maintenance payments (75 million of euro on December 31, 2016), and 7 million euros for insurance premiums (27 million of euro on December 31, 2016).

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Discontinued Operations/Non-current Assets Held for Sale

12 Months Ended

Dec. 31, 2017

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Discontinued Operations/Non-current Assets Held for Sale

NOTE 14—DISCONTINUED OPERATIONS/NON-CURRENT ASSETS HELD FOR SALE

On March 8, 2016, the TIM Group completed the sale of the remaining interest in Sofora -Telecom Argentina following approval by the Enacom, the Argentinian communications regulatory authority.

The total amount from the transaction was over 960 million USD, including:

· 550.6 million USD received on March 8, 2016 for the investment in Sofora-Telecom Argentina. The impact on the statement of cash flows (item “Proceeds from sale that result in a loss of control of subsidiaries or other businesses, net of cash disposed of”) was 492 million euros;

· 50 million USD, also received on March 8, 2016, from other shareholders of Sofora-Telecom Argentina, with respect to ancillary agreements to the transaction;

· 329.5 million USD received previously in connection with sales of investments and other associated assets to Fintech, completed between December 2013 and October 2014; and

· 30 million USD generated by making technical support services available to Telecom Argentina group companies.

— · —

Below is a summary of the income statement impacts from the Sofora—Telecom Argentina group and its sale. The figures for 2016 have been translated at the average exchange rate for the period January 1 – March 8 (15.7981 pesos per euro), whereas the figures for 2015 have been translated at the annual average exchange rate (10.2689 pesos per euro).

		Year ended December 31,		1.1-3.8 2016			Year ended December 31,
		2017					2015
		(millions of euros)
Income statement effects from Discontinued operations/Non-current assets held for sale:
Revenues			—		504			3,943
Other income					1			4
Operating expenses					(372	)		(2,892	)
Gains (losses) on disposals of non-current assets								2
Goodwill and other non-current assets net impairment losses								(22	)
Operating profit (loss)			—		133			1,035
Finance income (expenses)					(42	)		(94	)
Profit (loss) before tax from Discontinued operations/Non-current assets held for sale			—		91			941
Income tax expense					(32	)		(320	)
Profit (loss) after tax from Discontinued operations/Non-current assets held for sale	(A)		—		59			621
Other minor income statement effects:
Other income/(expenses) connected to sales in previous years
Other minor entries								(10	)
	(B)		—		—			(10	)
Profit (loss) from Discontinued operations/Non-current assets held for sale	(C=A+B)		—		59			611
Income statement effects on the selling entities:
Net gains on disposal					307
Transfer to the separate consolidated dated income statement of the Reserve for exchange differences on translating foreign operations					(304	)
Income tax expense relating to the disposal					(15	)
	(D)		—		(12	)		—
Profit (loss) from Discontinued operations/Non-current assets held for sale	(C+D)		—		47			611
Attributable to:
Owners of the Parent			—		(3	)		89
Non-controlling interests			—		50			522

The earnings per share from Discontinued operations/Non-current assets held for sale, for 2016, 2015 and 2014 are shown in the table below:

	Year ended December 31,		1.1-3.8 2016.		Year ended December 31,
	2017				2015
	(Euros)
Basic and Diluted Earnings Per Share (EPS) from Discontinued operations/Non-current assets held for sale (*)
Ordinary Share		—		—		0.03
Savings Share		—		—		0.03

(*) Basic EPS is equal to Diluted EPS.

— · —

Within the consolidated statements of cash flows the net impacts, expressed in terms of contribution to the consolidation, of the “Discontinued operations/Non-current assets held for sale” are broken down as follows:

	2017		2016			2015
	(millions of euros)
Discontinued operations/Non-current assets held for sale:
Cash flows from (used in) operating activities				130			810
Cash flows from (used in) investing activities				(117	)		(1,058	)
Cash flows from (used in) financing activities				(58	)		229
Total		—		(45	)		(19	)

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Equity

12 Months Ended

Dec. 31, 2017

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Equity

NOTE 15—EQUITY

Equity consisted of:

	As of December 31,
	2017		2016
	(millions of euros)
Equity attributable to owners of the Parent		21,557		21,207
Non-controlling interests		2,226		2,346
Total		23,783		23,553

The composition of the “Equity attributable to owners of the Parent” is the following:

	As of December 31,
	2017			2016
	(millions of euros)
Share capital		11,587			11,587
Additional paid-in capital		2,094			2,094
Other reserves and retained earnings (accumulated losses), including profit (loss) for the year(*)		7,876			7,526
Total		21,557			21,207
(*) of which:
Reserve for available-for-sale financial assets		42			39
Reserve for hedging instruments		(582	)		(551	)
Reserve for exchange differences on translating foreign operations		(955	)		(366	)
Reserve for remeasurements of employee defined benefit plans (IAS 19)		(104	)		(113	)
Share of other comprehensive income (loss) of associates and joint ventures accounted for using the equity method
Sundry reserves and retained earnings (accumulated losses), including profit (loss) for the year		9,475			8,517

Movements in Share Capital in 2017, amounting to 11,587 million euros, net of treasury shares of 90 million euros, are shown in the tables below:

Reconciliation between the number of outstanding shares at December 31, 2014 and December 31, 2015

	Shares as of December 31, 2014			Shares issued for plans destined for employees			Shares as of December 31, 2015			Percentage of Share Capital
	(number of shares)
Ordinary Shares issued (a)		13,470,955,451			28,956,320			13,499,911,771			69.13	%
Less: Treasury Shares (b)		(162,216,387	)		(1,538,001	)		(163,754,388	)
Ordinary Shares Outstanding (c)		13,308,739,064			27,418,319			13,336,157,383
Savings Shares Issued and Outstanding (d)		6,026,120,661			1,671,038			6,027,791,699			30.87	%
Total TIM S.p.A shares issued (a+d)		19,497,076,112			30,627,358			19,527,703,470			100.00	%
Total TIM S.p.A. shares outstanding (c+d)		19,334,859,725			29,089,357			19,363,949,082

Reconciliation between the number of outstanding shares at December 31, 2015 and December 31, 2016

	Shares as of December 31, 2015			Shares issued for the full conversion of the Mandatory Convertible Bond due 2016		Shares as of December 31, 2016			Percentage of Share Capital
	(number of shares)
Ordinary Shares issued (a)		13,499,911,771			1,703,210,812		15,203,122,583			71.61	%
Less: Treasury Shares (b)		(163,754,388	)				(163,754,388	)
Ordinary Shares Outstanding (c)		13,336,157,383			1,703,210,812		15,039,368,195
Savings Shares Issued and Outstanding (d)		6,027,791,699					6,027,791,699			28.39	%
Total TIM S.p.A. shares issued (a+d)		19,527,703,470			1,703,210,812		21,230,914,282			100.00	%
Total TIM S.p.A. shares outstanding (c+d)		19,363,949,082			1,703,210,812		21,067,159,894

Reconciliation between the number of outstanding shares at December 31, 2016 and December 31, 2017

	Shares as of December 31, 2016			Share issues		Shares as of December 31, 2017			Percentage of Share Capital
	(number of shares)
Ordinary Shares issued (a)		15,203,122,583					15,203,122,583			71.61	%
Less: Treasury Shares (b)		(163,754,388	)				(163,754,388	)
Ordinary Shares Outstanding (c)		15,039,368,195					15,039,368,195
Savings Shares Issued and Outstanding (d)		6,027,791,699					6,027,791,699			28.39	%
Total TIM S.p.A. shares issued (a+d)		21,230,914,282			—		21,230,914,282			100.00	%
Total TIM S.p.A. shares outstanding (c+d)		21,067,159,894			—		21,067,159,894

Reconciliation between the value of the outstanding shares as of December 31, 2014 and December 31, 2015

	Share capital as of December 31, 2014			Change in share capital as a result of plans destined for employees			Share capital as of December 31, 2015
	(millions of euros)
Ordinary Shares issued (a)		7,409			16			7,425
Less: Treasury Shares (b)		(89	)		(1	)		(90	)
Ordinary Shares Outstanding (c)		7,320			15			7,335
Savings Shares Issued and Outstanding (d)		3,314			1			3,315
Total TIM S.p.A. share capital issued (a+d)		10,723			17			10,740
Total TIM S.p.A. share capital outstanding (c+d)		10,634			16			10,650

Reconciliation between the value of the outstanding shares as of December 31, 2015 and December 31, 2016

	Share capital as of December 31, 2015			Change in share capital as a result of the full conversion of the Mandatory  Convertible Bond due 2016		Share capital as of December 31, 2016
	(millions of euros)
Ordinary Shares issued (a)		7,425			937		8,362
Less: Treasury Shares (b)		(90	)				(90	)
Ordinary Shares Outstanding (c)		7,335			937		8,272
Savings Shares Issued and Outstanding (d)		3,315					3,315
Total TIM S.p.A. share capital issued (a+d)		10,740			937		11,677
Total TIM S.p.A. share capital outstanding (c+d)		10,650			937		11,587

Reconciliation between the value of the outstanding shares as of December 31, 2016 and December 31, 2017

	Share capital as of December 31, 2016			Change in share capital		Share capital as of December 31, 2017
	(millions of euros)
Ordinary Shares issued (a)		8,362					8,362
Less: Treasury Shares (b)		(90	)				(90	)
Ordinary Shares Outstanding (c)		8,272					8,272
Savings Shares Issued and Outstanding (d)		3,315					3,315
Total TIM S.p.A. share capital issued (a+d)		11,677			—		11,677
Total TIM S.p.A. share capital outstanding (c+d)		11,587			—		11,587

The total value of the ordinary treasury shares at December 31, 2017, amounting to 510 million euros, was recorded as follows: the part relating to accounting par value (90 million euros) was recognized as a deduction from share capital issued and the remaining part as a deduction from Other reserves and retained earnings (accumulated losses), including profit (loss) for the year.

SHARE CAPITAL INFORMATION

The TIM S.p.A. ordinary and savings shares are listed respectively in Italy (FTSE index) and on the NYSE in the form of American Depositary Shares, each ADS corresponding to 10 shares of ordinary or savings shares, respectively, represented by American Depositary Receipts (ADRs) issued by JPMorgan Chase Bank.

In the shareholder resolutions passed to increase share capital against cash payments, the pre-emptive right can be excluded to the extent of a maximum of ten percent of the pre-existing share capital, on condition that the issue price corresponds to the market price of the shares and that this is confirmed in a specific report issued by the firm charged with the audit of the Company.

The Group sources itself with the capital necessary to fund its requirements for business development and operations; the sources of funds are found in a balanced mix of equity, permanently invested by the shareholders, and debt capital, to guarantee a balanced financial structure and minimize the total cost of capital, with a resulting advantage to all the stakeholders.

Debt capital is structured according to different maturities and currencies to ensure an adequate diversification of the sources of funding and an efficient access to external sources of financing (taking advantage of the best opportunities offered in the financial markets of the euro, U.S. dollar and Pound sterling areas to minimize costs), taking care to reduce the refinancing risk.

The remuneration of equity is proposed by the board of directors to the shareholders’ meeting, which meets to approve the annual financial statements, based upon market trends and business performance, once all the other obligations are met, including debt servicing. Therefore, in order to guarantee an adequate remuneration of capital, safeguard company continuity and business development, the Group constantly monitors the change in debt levels in relation to equity, the level of net debt and the operating margin of industrial operations.

RIGHTS OF SAVINGS SHARES

The rights of the TIM S.p.A. savings shares are indicated below:

· the profit shown in the duly approved separate financial statements, less the amount appropriated to the legal reserve, must be distributed to the holders of savings shares in an amount up to 5% of the 0.55 euros per share;

· after assigning preferred dividends to the savings shares, the distribution of which is approved by the shareholders’ meeting, the remaining profit shall be assigned to all the shares so that the savings shares have the right to dividends that are higher, than the dividends to which the ordinary shares are entitled, by 2% of 0.55 euros per share;

· if in any one year dividends of below 5% of the 0.55 euros per share are paid to the savings shares, the difference is carried over and added to the preferred dividends for the next two successive years;

· in the case of the distribution of reserves, the savings shares have the same rights as ordinary shares. Moreover, when there is no profit or insufficient profit reported in the separate financial statements for the year to satisfy the rights of the savings shares, the shareholders’ meeting called to approve those separate financial statements may choose to satisfy the dividend right and/or the additional right by distributing available reserves. The distribution of available reserves for such payments excludes the application of the mechanism extending the right to the preferred dividend not paid through the distribution of profits for the following two years;

· the reduction of share capital as a result of losses does not affect the savings shares except for the amount of the loss which is not covered by the portion of the share capital represented by the other shares;

· upon the wind-up of TIM S.p.A., the savings shares have a pre-emptive right in the reimbursement of capital up to the amount of 0.55 euros per share;

· in the event of the cessation of trading in the Company’s ordinary or savings shares, the holder of savings shares may ask TIM S.p.A. to convert its shares into ordinary shares, according to the manner resolved by the special session of the shareholders’ meeting called for that purpose within two months of being excluded from trading.

Additional paid-in capital, amounting to 2,094 million euros, was unchanged with respect to December 31, 2016.

Other reserves moved through the Statements of comprehensive income comprised:

· The Reserve for available-for-sale financial assets, which had a positive balance of 42 million euros at December 31, 2017, showed an increase of 3 million euros compared to December 31, 2016. The increase was attributable to unrealized gains on the securities portfolio of Telecom Italia Finance (5 million euros), the negative fair value adjustment of other available-for-sale financial assets held by the Parent TIM (6 million euros), and unrealized gains on the investments in Assicurazioni Generali and Fin.Priv. of the Parent TIM (4 million euros). This reserve is stated net of deferred tax liabilities of 11 million euros (at December 31, 2016, it was stated net of deferred tax liabilities of 13 million euros).

· The Reserve for cash flow hedges, had a negative balance of 582 million euros at December 31, 2017, (negative 551 million euros at December 31, 2016). This reserve is stated net of deferred tax assets of 164 million euros (at December 31, 2016, it was stated net of deferred tax assets of 167 million euros). In particular, this reserve includes the effective portion of gains or losses on the fair value adjustments of derivatives designated as cash flow hedges of the exposure to volatility in the cash flows of assets or liabilities recognized in the financial statements (“cash flow hedge”).

· The Reserve for exchange differences on translating foreign operations showed a negative balance of 955 million euros at December 31, 2017 (negative 366 million euros at December 31, 2016) and mainly related to exchange differences resulting from the translation into euros of the financial statements of companies belonging to the Brazil Business Unit (negative 969 million euros versus negative 414 million euros at December 31, 2016).

· The Reserve for re-measurements of employee defined benefit plans, which had a negative balance of 104 million euros, was down by 9 million euros compared to December 31, 2016. This reserve is stated net of deferred tax assets of 26 million euros (at December 31, 2016, it was stated net of deferred tax assets of 27 million euros). In particular, this reserve includes the recognition of changes in actuarial gains (losses).

· The Share of other profits (losses) of associates and joint ventures accounted for using the equity method, was nil at both December 31, 2017 and at December 31, 2016.

Other sundry reserves and retained earnings (accumulated losses), including profit (loss) for the year amounted to 9,475 million euros, showing an increase of 958 million euros, as detailed below:

	Year ended December 31,
	2017			2016
	(millions of euros)
Profit (loss) for the year attributable to Owners of the Parent		1,121			1,808
Dividends approved—TIM S.p.A.		(166	)		(166	)
Grant of equity instruments		(6	)		1
Other changes		9			(16	)
Change for the year in Sundry reserves and retained earnings (accumulated losses), including profit (loss) for the year		958			1,627

Non-controlling interests amounted to 2,226 million euros, mainly relating to companies belonging to the Brazil Business Unit (1,556 million euros) and the company Inwit (609 million euros), showing a drop of 120 million euros compared to December 31, 2016, as detailed below:

	Year ended December 31,
	2017			2016
	(millions of euros)
Profit (loss) for the year attributable to Non-controlling interests		166			158
Group Company dividends paid to non-controlling shareholders		(64	)		(38	)
Changes in the Reserve for exchange differences on translating foreign operations		(236	)		109
Disposal of the Sofora—Telecom Argentina group					(1,582	)
Other changes		14			4
Change for the year in Equity attributable to Non-Controlling interests		(120	)		(1,349	)

The Reserve for exchange differences on translating foreign operations attributable to non-controlling interests showed a negative balance of 471 million euros at December 31, 2017 (negative 235 million euros at December 31, 2016), relating entirely to exchange differences arising from the translation into euros of the financial statements of the companies belonging to the Brazil Business Unit.

Future Potential changes in share capital

“Future potential changes in share capital” are presented in the Note “Earnings per share”.

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Financial Liabilities (Non-current and Current)

12 Months Ended

Dec. 31, 2017

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Financial Liabilities (Non-current and Current)

NOTE 16—FINANCIAL LIABILITIES (NON—CURRENT AND CURRENT)

Non-current and current financial liabilities (gross financial debt) were broken down as follows:

		As of December 31,
		2017		2016
		(millions of euros)
Financial payables (medium/long-term):
Bonds			18,119		18,537
Convertible Bonds			1,862		1,832
Amounts due to banks			3,798		5,461
Other financial payables			161		306
			23,940		26,136
Finance lease liabilities (medium/long-term)			2,249		2,444
Other financial liabilities (medium/long-term):
Hedging derivatives relating to hedged items classified as non-current assets/liabilities of a financial nature			1,914		1,876
Non-hedging derivatives			5		13
Other liabilities
			1,919		1,889
Total Non-current financial liabilities	(A)		28,108		30,469
Financial payables (short-term):
Bonds			2,215		2,589
Convertible Bonds			6		6
Amounts due to banks			2,183		1,072
Other financial payables			96		117
			4,500		3,784
Finance lease liabilities (short-term)			181		192
Other financial liabilities (short-term):
Hedging derivatives relating to hedged items classified as current assets/liabilities of a financial nature			71		69
Non-hedging derivatives			4		11
Other liabilities
			75		80
Total Current financial liabilities	(B)		4,756		4,056
Financial liabilities directly associated with Discontinued operations/Non-current assets held for sale	(C)		—		—
Total Financial liabilities (Gross financial debt)	(A+B+C)		32,864		34,525

Gross financial debt according to the original currency of the transaction is as follows:

	As of December 31, 2017				As of December 31, 2016
	(millions of foreign currency)		(millions of euros)		(millions of foreign currency)		(millions of euros)
USD		7,168		5,977		7,504		7,119
GBP		1,266		1,427		2,017		2,356
BRL		5,863		1,478		7,128		2,075
JPY		20,031		148		20,032		162
EURO				23,834				22,813
Total				32,864				34,525

The breakdown of gross financial debt by effective interest rate bracket related to the original transaction excluding the effect of any hedging instruments, is provided below:

	As of December 31,
	2017		2016
	(millions of euros)
Up to 2.5%		5,005		5,041
From 2.5% to 5%		10,571		9,368
From 5% to 7.5%		11,265		12,629
From 7.5% to 10%		2,690		3,918
Over 10%		589		673
Accruals/deferrals, MTM and derivatives		2,744		2,896
Total		32,864		34,525

Following the use of derivative hedging instruments, on the other hand, the gross financial debt by nominal interest rate bracket is:

	As of December 31,
	2017		2016
	(millions of euros)
Up to 2.5%		13,071		9,410
From 2.5% to 5%		6,631		7,775
From 5% to 7.5%		7,366		10,586
From 7.5% to 10%		1,849		1,430
Over 10%		1,203		2,428
Accruals/deferrals, MTM and derivatives		2,744		2,896
Total		32,864		34,525

The maturities of financial liabilities according to the expected nominal repayment amount, as defined by contract, are the following:

Details of the maturities of Financial liabilities—at nominal repayment amount:

	Maturing by December 31, of the year
	2018		2019		2020		2021		2022		After 2022		Total
	(millions of euros)
Bonds		1,739		2,424		1,267		564		3,087		12,694		21,775
Loans and other financial liabilities		1,264		1,731		603		628		714		243		5,183
Finance lease liabilities		138		114		113		113		83		1,826		2,387
Total		3,141		4,269		1,983		1,305		3,884		14,763		29,345
Current financial liabilities		982												982
Total		4,123		4,269		1,983		1,305		3,884		14,763		30,327

The main components of financial liabilities are commented below.

Bonds were broken down as follows:

	As of December 31,
	2017			2016
	(millions of euros)
Non-current portion		18,119			18,537
Current portion		2,215			2,589
Total carrying amount		20,334			21,126
Fair value adjustment and measurement at amortized cost		(559	)		(709	)
Total nominal repayment amount		19,775			20,417

The Convertible bonds included the unsecured equity-linked bond for 2,000 million euros, with a coupon of 1.125%, issued by TIM S.p.A convertible into newly-issued ordinary shares maturing in 2022.

This item was broken down as follows:

	As of December 31,
	2017		2016
	(millions of euros)
Non-current portion		1,862		1,832
Current portion		6		6
Total carrying amount		1,868		1,838
Fair value adjustment and measurement at amortized cost		132		162
Total nominal repayment amount		2,000		2,000

The nominal repayment amount of bonds and convertible bonds totaled 21,775 million euros, down by 642 million euros compared to December 31, 2016 (22,417 million euros) as a result of new issues, repayments and the exchange effect in 2017.

The following table lists the bonds issued by companies of the TIM Group, by issuing company, expressed at the nominal repayment amount, net of bond repurchases, and also at market value:

Currency	Amount (millions)		Nominal repayment amount (millions of euros)		Coupon	Issue date		Maturity date		Issue price (%)		Market price as of December 31, 2017 (%)		Market value as of December 31, 2017 (millions of euros)
Bonds issued by TIM S.p.A.
Euro		592.9		593	4.750%		5/25/11		5/25/18		99.889		101.905		604
Euro		581.9		582	6.125%		6/15/12		12/14/18		99.737		105.768		615
Euro		832.4		832	5.375%		1/29/04		1/29/19		99.070		105.653		879
GBP		850.0		958	6.375%		6/24/04		6/24/19		98.850		107.457		1,029
Euro		719.5		719	4.000%		12/21/12		1/21/20		99.184		107.671		775
Euro		547.5		547	4.875%		9/25/13		9/25/20		98.966		112.218		614
Euro		563.6		564	4.500%		1/23/14		1/25/21		99.447		112.283		633
Euro		(b)203.5		204	6 month Euribor (base 365)		01/01/02		01/01/22		100		100.000		204
Euro		883.9		884	5.250%		02/10/10		02/10/22		99.295		117.798		1,041
Euro		(c)2,000		2,000	1.125%		3/26/15		3/26/22		100		100.347		2,007
Euro		1,000		1,000	3.250%		1/16/15		1/16/23		99.446		109.909		1,099
GBP		375.0		423	5.875%		5/19/06		5/19/23		99.622		117.038		495
Euro		1,000		1,000	2.500%		1/19/17		7/19/23		99.288		105.789		1,058
Euro		750		750	3.625%		1/20/16		1/19/24		99.632		111.698		838
USD		1,500		1,251	5.303%		5/30/14		5/30/24		100		107.369		1,343
Euro		1,000		1,000	3.000%		9/30/16		9/30/25		99.806		107.199		1,072
Euro		1,000		1,000	3.625%		5/25/16		5/25/26		100		112.068		1,121
Euro		1,250		1,250	2.375%		10/12/17		10/12/27		99.185		100.079		1,251
Euro		670		670	5.250%		03/17/05		03/17/55		99.667		117.022		784
Sub-Total				16,227											17,462
Bonds issued by Telecom Italia Finance S.A. and guaranteed by TIM S.p.A.
Euro		1,015		1,015	7.750%		01/24/03		01/24/33		(a)109.646		154.113		1,564
Sub-Total				1,015											1,564
Bonds issued by Telecom Italia Capital S.A. and guaranteed by TIM S.p.A.
USD		(d)676.6		564	6.999%		06/04/08		06/04/18		100		101.673		574
USD		(d)759.7		633	7.175%		06/18/09		06/18/19		100		106.399		674
USD		1,000		834	6.375%		10/29/03		11/15/33		99.558		116.568		972
USD		1,000		834	6.000%		10/06/04		09/30/34		99.081		111.781		932
USD		1,000		834	7.200%		07/18/06		07/18/36		99.440		124.700		1,040
USD		1,000		834	7.721%		06/04/08		06/04/38		100		129.801		1,082
Sub-Total				4,533											5,274
Total				21,775											24,300

(a) Weighted average issue price for bonds issued with more than one tranche.

(b) Reserved for employees.

(c) Bond convertible into newly-issued TIM S.p.A. ordinary treasury shares.

(d) Net of the securities bought back by TIM S.p.A. on July 20, 2015.

The following table lists the changes in bonds during 2017:

New issues	Currency		Amount (millions of original currency)		Issue date
Telecom Italia S.p.A. 1,000 million euros 2.500% maturing 07/19/2023		Euro		1,000		01/19/2017
Telecom Italia S.p.A. 1,250 million euros 2.375% maturing 10/12/2027		Euro		1,250		10/12/2017

Repayments	Currency		Amount (millions of original currency)		Repayment date
Telecom Italia S.p.A. 545 million euros 7.000%(1)		Euro		545		01/20/2017
Telecom Italia S.p.A. 628 million euros 4.500%(2)		Euro		628		09/20/2017
Telecom Italia S.p.A. 750 million GBP 7.375%		GBP		750		12/15/2017

(1) Net of buybacks by the Company of 455 million euros during 2015.

(2) Net of buybacks by the Company of 372 million euros during 2015.

Medium/long-term amounts due to banks of 3,798 million euros (5,461 million euros at December 31, 2016) decreased by 1,663 million euros. Short-term amounts due to banks totaled 2,183 million euros (1,072 million euros at December 31, 2016) and included 1,282 million euros of the current portion of medium/long-term amounts due to banks.

Medium/long-term other financial payables, amounting to 161 million euros (306 million euros at December 31, 2016), decreased by 145 million euros (following the early repayment on April 10, 2017 of the 100 million euro bilateral term loan with Cassa Depositi e Prestiti maturing April 2019) and included 144 million euros of the Telecom Italia Finance S.A. loan for 20,000 million Japanese yen maturing in 2029. Short-term other financial payables amounted to 96 million euros (117 million euros at December 31, 2016) and included 14 million euros of the current portion of medium/long-term other financial payables.

Medium/long-term finance lease liabilities totaled 2,249 million euros (2,444 million euros at December 31, 2016) and mainly related to property leases recognized under IAS 17 using the financial method. Short-term finance lease liabilities amounted to 181 million euros (192 million euros at December 31, 2016) and related to the current portion of medium/long-term finance lease liabilities.

Hedging derivatives relating to items classified as non-current liabilities of a financial nature amounted to 1,914 million euros (1,876 million euros at December 31, 2016). Hedging derivatives relating to items classified as current liabilities of a financial nature totaled 71 million euros (69 million euros at December 31, 2016).

Non-hedging derivatives classified as non-current financial liabilities totaled 5 million euros (13 million euros at December 31, 2016). Non-hedging derivatives classified as non-current financial liabilities totaled 4 million euros, a decline of 7 million compared to 11 million euros at December 31, 2016. These also include the measurement of derivatives which, although put into place for hedging purposes, do not possess the formal requisites to be considered as such under IFRS.

“COVENANTS” AND “NEGATIVE PLEDGES” EXISTING AT DECEMBER 31, 2017

The bonds issued by the TIM Group do not contain financial covenants (e.g. ratios such as Debt/EBITDA, EBITDA/Interest, etc.) or clauses that result in the automatic early redemption of the bonds in relation to events other than the insolvency of the TIM Group⁽¹⁾. Furthermore, the repayment of the bonds and the payment of interest are not covered by specific guarantees nor are there commitments provided relative to the assumption of future guarantees, except for the full and unconditional guarantees provided by TIM S.p.A. for the bonds issued by Telecom Italia Finance S.A. and Telecom Italia Capital S.A..

Since these bonds have been placed principally with institutional investors in major world capital markets (Euromarket and the U.S.A.), the terms that regulate the bonds are in line with market practice for similar transactions effected on these same markets. Consequently, for example, there are commitments not to use the company’s assets as collateral for loans (“negative pledges”).

With respect to loans taken out by TIM S.p.A. with the European Investment Bank (EIB), at December 31, 2017, the nominal amount of outstanding loans amounted to 1,950 million euros, of which 800 million euros at direct risk and 1,150 million euros secured.

⁽¹⁾  A change of control event can result in the early repayment of the convertible bond of TIM S.p.A., the EIB loans and the bilateral credit line with Mediobanca, as further detailed below.

EIB loans not secured by bank guarantees for a nominal amount equal to 800 million euros need to apply the following covenants:

· in the event the company becomes the target of a merger, demerger or contribution of a business segment outside the Group, or sells, disposes or transfers assets or business segments (except in certain cases, expressly provided for), it shall immediately inform the EIB which shall have the right to ask for guarantees to be provided or changes to be made to the loan contract, or, only for certain loan contracts, the EIB shall have the option to demand the immediate repayment of the loan (should the merger, demerger or contribution of a business segment outside the Group compromise the Project execution or cause a prejudice to EIB in its capacity as creditor);

· with the 500 million euros loan, signed on December 14, 2015, TIM undertook to ensure that, for the entire duration of the loan, the total financial debt of the Group companies other than TIM S.p.A. – except for the cases when that debt is fully and irrevocably secured by TIM S.p.A. – is lower than 35% (thirty-five percent) of the Group’s total financial debt.

EIB loans secured by banks or entities approved by the EIB for a total nominal amount of 1,150 million euros, and direct risk loans, respectively for 300 million euros, signed on July 30, 2014 and 500 million euros, signed on December 14, 2015, must apply the following covenants:

· “Inclusion clause”, covering a total of 1,650 million euros of loans, under which, in the event TIM commits to uphold financial covenants in other loan contracts (and even more restrictive clauses for 2014 and 2015 direct risk loans, including, for instance, cross default clauses and commitments restricting the sale of goods) that are not present in or are stricter than those granted to the EIB, the EIB will have the right – if, in its reasonable opinion, it considers that such changes may have a negative impact on TIM’s financial capacity – to request the provision of guarantees or the modification of the loan contract in order to establish an equivalent provision in favor of the EIB;

· “Network Event”, covering a total of 1,350 million euros of loans, under which, in the event of the disposal of the entire fixed network or of a substantial part of it (in any case more than half in quantitative terms) to not controlled third parties or in the event of disposal of the controlling interest in the company in which the network or a substantial part of it has previously been transferred, TIM must immediately inform the EIB, which shall have the option of requiring the establishment of guarantees or amendment of the loan contract or an alternative solution.

The loan agreements of TIM S.p.A. do not contain financial covenants (e.g. ratios such as Debt/EBITDA, EBITDA/Interests, etc.) which would oblige the Company to repay the outstanding loan if the covenants are not observed.

The loan agreements contain the usual other types of covenants, including the commitment not to use the Company’s assets as collateral for loans (negative pledges), the commitment not to change the business purpose or sell the assets of the Company unless specific conditions exist (e.g. the sale takes place at fair market value). Covenants with basically the same content are also found in the export credit loan agreement.

In the Loan Agreements and the Bonds, TIM is required to provide notification of change of control. Identification of the occurrence of a change of control and the applicable consequences—including, at the discretion of the investors, the establishment of guarantees or the early repayment of the amount paid in cash or as shares and the cancellation of the commitment in the absence of agreements to the contrary—are specifically covered in the individual agreements.

In addition, the outstanding loans generally contain a commitment by TIM, whose breach is an Event of Default, not to implement mergers, demergers or transfer of business, involving entities outside the Group. Such Event of Default may entail, upon request of the Lender, the early redemption of the drawn amounts and/or the annulment of the undrawn commitment amounts.

In the documentation of the loans granted to certain companies of the Tim Brasil group, the companies must generally respect certain financial ratios (e.g. capitalization ratios, ratios for servicing debt and debt ratios) as well as the usual other covenants, under pain of a request for the early repayment of the loan.

Finally, as at December 31, 2017, no covenant, negative pledge or other clause relating to the debt position, had in any way been breached or violated.

Revolving Credit Facility

The following table shows the composition and the drawdown of the committed credit lines available at December 31, 2017:

	As of December 31,
	2017				2016
	Agreed		Drawn down		Agreed		Drawn down
	(billions of euros)
Revolving Credit Facility—expiring May 2019		4.00				4.00
Revolving Credit Facility—expiring March 2020		3.00				3.00
Total		7.00		—		7.00		—

At December 31, 2017, TIM had two syndicated Revolving Credit Facilities of 4 billion euros and 3 billion euros expiring May 24, 2019 and March 25, 2020, respectively, both not yet drawn down. On January 16, 2018, the two Revolving Credit Facilities were closed and replaced by a new Revolving Credit Facility for a total of 5 billion euros, expiring in 5 years.

TIM also has:

· a bilateral Term Loan from UBI Banca (former Banca Regionale Europea) expiring July 2019 for 200 million euros, drawn down for the full amount;

· two bilateral Term Loans from Mediobanca, respectively for 134 million euros expiring in November 2019 and 75 million euros expiring in July 2020, drawn down for the full amount;

· a bilateral Term Loan from ICBC expiring July 2020 for 120 million euros, drawn down for the full amount;

· a bilateral Term Loan from Intesa Sanpaolo expiring August 2021 for 200 million euros, drawn down for the full amount;

· a hot money with Banca Popolare dell’Emilia Romagna for 250 million euros, drawn down for the full amount and fully repaid at maturity on February 15, 2018;

· a hot money with Intesa Sanpaolo expiring December 2018 for 200 million euros, drawn down for the full amount;

· a bilateral Term Loan from Intesa Sanpaolo expiring December 2018 for 2 billion euros, not yet drawn down.

On December 21, 2017, TIM S.p.A. notified Mediobanca of its decision to exercise the early repayment option on the 150 million euro bilateral term loan expiring July 2020, with the full repayment of the residual principal of 75 million euros on January 3, 2018.

On January 16, 2018, TIM S.p.A. exercised the early repayment option on the 2 billion euro bilateral Term Loan with Intesa Sanpaolo expiring December 2018, with repayment made on January 17, 2018.

TIM rating at December 31, 2017

At December 31, 2017, the three rating agencies—Standard & Poor’s, Moody’s and Fitch Ratings—rated TIM as follows:

	Rating	Outlook
STANDARD &POOR’S	BB+		Positive
MOODY’S	Ba1		Stable
FITCH RATINGS	BBB-		Stable

Additional cash flow information required by IAS 7.

				Cash transactions					Non cash transactions
		As of December 31, 2016		Receipts and/or issues		Payments and/or reimbursements			Exchange rate difference			Fair value changes			Other changes			As of December 31, 2017
		(millions of euros)
Financial payables (medium/long-term):
Bonds			21,126		2,250		(2,023	)		(873	)		(107	)		(39	)		20,334
Convertible Bonds			1,838													30			1,868
Amounts due to banks			6,038		324		(1,145	)		(219	)					82			5,080
Other financial payables			319				(111	)		(18	)					(15	)		175
	(a)		29,321		2,574		(3,279	)		(1,110	)		(107	)		58			27,457
of which short term			3,185				(3,258	)		(153	)		(25	)		3,768			3,517
Finance lease liabilities (medium/long-term)			2,636		56		(147	)		(65	)					(50	)		2,430
	(b)		2,636		56		(147	)		(65	)		—			(50	)		2,430
of which short term			192				(147	)		(4	)					140			181
Other financial liabilities (medium/long-term):
Hedging derivatives relating to hedged items classified as non-current assets/liabilities of a financial nature			1,945							165			(128	)		3			1,985
Non-hedging derivatives			24							(9	)					(6	)		9
Other liabilities
	(c)		1,969		—		—			156			(128	)		(3	)		1,994
of which short term			80							(4	)		(2	)		1			75
Financial payables (short-term):
Amounts due to banks			495													406			901
Other financial payables			104													(22	)		82
	(d)		599		—		—			—			—			384			983
Financial liabilities directly associated with Discontinued operations/Non-current assets held for sale																			—
	(e)		—		—		—			—			—			—			—
Total Financial liabilities (Gross financial debt)	(f=a+b+ c+d+e)		34,525		2,630		(3,426	)		(1,019	)		(235	)		389			32,864
Hedging derivatives relating to hedged items classified as current and non-current assets/liabilities of a financial nature	(g)		2,682							(768	)		(180	)		21			1,755
Non hedging derivatives	(h)		67							(42	)		(3	)					22
Total	(i=f-g-h)		31,776		2,630		(3,426	)		(209	)		(52	)		368			31,087

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Financial Risk Management

12 Months Ended

Dec. 31, 2017

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Financial Risk Management

NOTE 17—FINANCIAL RISK MANAGEMENT

Financial risk management objectives and policies of the TIM Group

The TIM Group is exposed to the following financial risks in the ordinary course of its business operations:

· market risk: stemming from changes in interest rates and exchange rates in connection with financial assets that have been originated and financial liabilities that have been assumed;

· credit risk: representing the risk of non-fulfillment of obligations undertaken by the counterparty with respect to the liquidity investments of the Group;

· liquidity risk: connected with the need to meet short-term financial commitments.

These financial risks are managed by:

· the establishment, at central level, of guidelines for directing operations;

· the work of an internal committee that monitors the level of exposure to market risks in accordance with preestablished general objectives;

· the identification of the most suitable financial instruments, including derivatives, to reach preestablished objectives;

· the monitoring of the results achieved;

· the exclusion of the use of financial instruments for speculative purposes.

The policies for the management and the sensitivity analyses of the above financial risks by the TIM Group are described below.

Identification of risks and analysis

The TIM Group is exposed to market risks, as a result of changes in interest rates and exchange rates, in the markets in which it operates or has bond issues, mainly in Europe, the United States, Great Britain and Latin America.

The financial risk management policies of the TIM Group are directed towards diversifying market risks, hedging exchange rate risk in full and minimizing interest rate exposure by an appropriate diversification of the portfolio, which is also achieved by using carefully selected derivative financial instruments.

The Group sets an optimum composition for the fixed-rate and variable-rate debt structure and uses derivative financial instruments to achieve that set composition. In consideration of the Group’s operating activities, the optimum combination of medium/long-term non-current financial liabilities has been set, on the basis of the nominal amount, in the range 65%-75% for the fixed-rate component and 25%-35% for the variable-rate component.

In managing market risk, the Group has adopted Guidelines on “Management and control of financial risk” and mainly uses the following financial derivatives:

· Interest Rate Swaps (IRS), to modify the profile of the original exposure to interest rate risks on loans and bonds, both fixed and variable;

· Cross Currency and Interest Rate Swaps (CCIRS) and Currency Forwards, to convert loans and bonds issued in currencies other than euro—principally in US dollars and British pounds—to the functional currencies of the operating companies.

Derivative financial instruments are designated as fair value hedges for managing exchange rate and interest rate risk on instruments denominated in currencies other than euro and for managing interest rate risk on fixed-rate loans. Derivative financial instruments are designated as cash flow hedges when the objective is to pre-set the exchange rate of future transactions and the interest rate.

All derivative financial instruments are entered into with banking and financial counterparties with at least a “BBB-” rating from Standard & Poor’s or an equivalent rating, and an outlook that is not negative. The exposure to the various market risks can be measured by sensitivity analyses, as set forth in IFRS 7. This analysis illustrates the effects produced by a given and assumed change in the levels of the relevant variables in the various reference markets (exchange rates, interest rates and prices) on finance income and expenses and, at times, directly on equity. The sensitivity analysis was performed based on the suppositions and assumptions indicated below:

· sensitivity analyses were performed by applying reasonably likely changes in the relevant risk variables to the amounts in the consolidated financial statements at December 31, 2017;

· the changes in value of fixed-rate financial instruments, other than derivatives, produced by changes in the reference interest rates, generate an impact on profit only when, in accordance with IAS 39, they are accounted for at their fair value. All fixed-rate instruments, which are accounted for at amortized cost, are not subject to interest rate risk as defined by IFRS 7;

· in the case of fair value hedge relationships, fair value changes of the underlying hedged item and of the derivative instrument, due to changes in the reference interest rates, offset each other almost entirely in the income statement for the year. As a result, these financial instruments are not exposed to interest rate risk;

· the changes in value of designated financial instruments in a cash flow hedge relationship, produced by changes in interest rates, generate an impact on the debt level and on equity; accordingly, they are included in this analysis;

· the changes in value, produced by changes in the reference interest rates, of variable-rate financial instruments, other than derivatives, which are not part of a cash flow hedge relationship, generate an impact on the finance income and expenses for the year; accordingly they are included in this analysis.

Exchange rate risk—Sensitivity analysis

At December 31, 2017 (and also at December 31, 2016), the exchange rate risk of the Group’s loans denominated in currencies other than the functional currency of the consolidated financial statements was hedged in full. Accordingly, a sensitivity analysis was not performed on exchange risk.

Interest rate risk—Sensitivity analysis

The change in interest rates on the variable component of payables and liquidity may lead to higher or lower finance income and expenses, while the changes in the level of the expected interest rate affect the fair value measurement of the Group’s derivatives. In particular:

· with respect to derivatives that convert the liabilities contracted by the Group to fixed rates (cash flow hedging), in line with international accounting standards that regulate hedge accounting, the fair value (mark-to-market) measurement of such instruments is set aside in a specific unavailable Equity reserve. The combined change of the numerous market variables to which the mark-to-market calculation is subject between the transaction inception date and the measurement date renders any assumption about the trend of the variables of little significance. As the contract expiration date approaches, the accounting effects described will gradually be absorbed until they cease to exist;

· if at December 31, 2017 the interest rates in the various markets in which the TIM Group operates had been 100 basis points higher/lower compared to the actual rates, then higher/lower finance expenses, before the income tax effect, would have been recognized in the income statement of 50 million euros (50 million euros at December 31, 2016).

Allocation of the financial structure between fixed rate and variable rate

As for the allocation of the financial structure between the fixed-rate component and the variable-rate component, for both financial assets and liabilities, reference should be made to the following tables. They show the nominal repayment/investment amount (insofar as that amount expresses the effective interest rate exposure of the Group) and, as far as financial assets are concerned, the intrinsic nature (financial characteristics and duration) of the transactions under consideration rather than just the stated contractual terms alone. Bearing that in mind, a transaction whose characteristics (short or very short time frame and frequent renewal) are such that the interest rate is periodically reset on the basis of market parameters, even though the contract does not call for re-fixing the interest rate (such as in the case of bank deposits), has been considered in the category of variable rate.

Total financial liabilities (at the nominal repayment amount)

	As of December 31, 2017						As of December 31, 2016
	Fixed rate		Variable rate		Total		Fixed rate		Variable rate		Total
	(millions of euros)
Bonds		17,237		4,538		21,775		17,978		4,439		22,417
Loans and other financial liabilities		3,689		3,881		7,570		3,588		4,505		8,093
Total non-current financial liabilities (including the current portion of medium/long-term financial liabilities)		20,926		8,419		29,345		21,566		8,944		30,510
Total current financial liabilities(*)		282		700		982		221		375		596
Total		21,208		9,119		30,327		21,787		9,319		31,106

(*) At December 31, 2017, variable-rate current liabilities included 38 million euros of payables to other lenders for installments paid in advance, which are classified in this line item even though they are not correlated to a definite rate parameter (83 million euros at December 31, 2016).

Total financial assets (at the nominal investment amount)

	As of December 31, 2017						As of December 31, 2016
	Fixed rate		Variable rate		Total		Fixed rate		Variable rate		Total
	(millions of euros)
Cash and cash equivalents				2,930		2,930				2,592		2,592
Securities		623		1,100		1,723		1,390		1,586		2,976
Other receivables		927		79		1,006		1,531		167		1,698
Total		1,550		4,109		5,659		2,921		4,345		7,266

With respect to variable-rate financial instruments, the contracts provide for revisions of the relative parameters to take place within the subsequent 12 months.

Effective interest rate

As to the effective interest rate, for the categories where that parameter can be determined, such parameter refers to the original transaction net of the effect of any derivative hedging instruments.

The disclosure, since it is provided by class of financial asset and liability, was determined, for purposes of calculating the weighted average, using the carrying amount adjusted by accruals, prepayments, deferrals and changes in fair value: this is therefore the amortized cost, net of accruals and any changes in fair value as a consequence of hedge accounting.

Total financial liabilities

	As of December 31, 2017				As of December 31, 2016
	Adjusted carrying amount		Effective interest rate		Adjusted carrying amount		Effective interest rate
	(millions of euros)		(%)		(millions of euros)		(%)
Bonds		21,521		4.96		22,141		5.44
Loans and other financial liabilities		8,599		3.59		9,487		3.88
Total		30,120		4.57		31,628		4.97

Total financial assets

	As of December 31, 2017				As of December 31, 2016
	Adjusted carrying amount		Effective interest rate		Adjusted carrying amount		Effective interest rate
	(millions of euros)		(%)		(millions of euros)		(%)
Cash and cash equivalents		2,930		0.05		2,592		0.05
Securities		1,723		4.07		2,976		7.17
Other receivables		326		2.03		230		5.23
Total		4,979		1.57		5,798		3.91

As for financial assets, the weighted average effective interest rate is not essentially influenced by the existence of derivatives.

As for market risk management using derivatives, reference should be made to the Note “Derivatives”.

Credit risk

Exposure to credit risk for the TIM Group consists of possible losses that could arise from the failure of either commercial or financial counterparties to fulfill their assumed obligations. Such exposure mainly stems from general economic and financial factors, the potential occurrence of specific insolvency situations of some borrowers and other more strictly technical-commercial or administrative factors.

The TIM Group’s maximum theoretical exposure to credit risk is represented by the carrying amount of the financial assets and trade receivables recorded in the financial statements.

Risk related to trade receivables is managed using customer scoring and analysis systems. For specific categories of trade receivables, the Group also makes use of factoring, mainly on a “non-recourse” basis.

Provision charges for bad debts are recorded for specific credit positions that have an element of individual risk. On credit positions that do not have such characteristics, provision charges are recorded by customer segment according to the average uncollectibility estimated on the basis of statistics. Further details are provided in the Note “Trade and miscellaneous receivables and other current assets”.

For the credit risk relating to the asset components which contribute to the determination of “Net financial debt”, it should be noted that the management of the Group’s liquidity is guided by conservative criteria and is principally based on the following:

· money market management: the investment of temporary excess cash resources;

· bond portfolio management: the investment of a permanent level of liquidity and the investment of that part of medium term liquidity, as well as the improvement in the average yield.

In order to limit the risk of the non-fulfillment of the obligations undertaken by the counterparty, deposits of the European companies are made with leading banking and financial institutions rated no lower than “investment grade”. Investments by the companies in South America are made with leading local counterparties. Moreover, deposits are made generally for periods of less than three months. With respect to other temporary investments of liquidity, there is a bond portfolio in which the investments have a low level of risk. All investments have been carried out in compliance with the Group Guidelines on “Management and control of financial risk”.

In order to minimize credit risk, the Group also pursues a diversification policy for its investments of liquidity and allocation of its credit positions among different banking counterparties. Consequently, there are no significant positions with any one single counterparty.

Liquidity risk

The Group aims to achieve an “adequate level of financial flexibility” which is expressed by maintaining a current treasury margin to cover the refinancing requirements at least for the next 12 months with irrevocable bank lines and liquidity.

14% of gross financial debt at December 31, 2017 (nominal repayment amount) will become due in the next 12 months.

Current financial assets at December 31, 2017, together with unused committed bank lines, are sufficient to fully cover the Group’s financial liabilities due at least for the next 24 months.

The following tables report the contractual cash flows, not discounted to present value, relative to gross financial debt at nominal repayment amounts and the interest flows, determined using the terms and the interest and exchange rates in place at December 31, 2017. The portions of principal and interest of the hedged liabilities includes both the disbursements and the receipts of the relative hedging derivatives.

Financial liabilities—Maturities of contractually expected disbursements

		Maturing by December 31, of the year
		2018		2019			2020			2021			2022			After 2022			Total
		(millions of euros)
Bonds	Principal		1,739		2,424			1,267			564			3,087			12,694			21,775
	Interest		1,022		899			764			708			671			5,669			9,733
Loans and other financial liabilities	Principal		1,264		1,731			603			628			714			243			5,183
	Interest		37		(21	)		(26	)		(53	)		(74	)		(681	)		(818	)
Finance lease liabilities	Principal		138		114			113			113			83			1,826			2,387
	Interest		158		127			120			112			105			1,196			1,818
Non-current financial liabilities(*)	Principal		3,141		4,269			1,983			1,305			3,884			14,763			29,345
	Interest		1,217		1,005			858			767			702			6,184			10,733
Current financial liabilities	Principal		982		—			—			—			—			—			982
	Interest		3		—			—			—			—			—			3
Total financial liabilities	Principal		4,123		4,269			1,983			1,305			3,884			14,763			30,327
	Interest		1,220		1,005			858			767			702			6,184			10,736

(*) These include hedging and non-hedging derivatives.

Derivatives on financial liabilities—Contractually expected interest flows

	Maturing by December 31, of the year
	2018			2019			2020			2021			2022			After 2022			Total
	(millions of euros)
Disbursements		414			342			296			295			295			2,613			4,255
Receipts		(520	)		(473	)		(400	)		(400	)		(399	)		(3,451	)		(5,643	)
Hedging derivatives—net (receipts) disbursements		(106	)		(131	)		(104	)		(105	)		(104	)		(838	)		(1,388	)
Disbursements		58			38			23			12			12			16			159
Receipts		(62	)		(38	)		(19	)		(11	)		(10	)		(15	)		(155	)
Non-hedging derivatives—net (receipts) disbursements		(4	)		—			4			1			2			1			4
Total net (receipts) disbursements		(110	)		(131	)		(100	)		(104	)		(102	)		(837	)		(1,384	)

Market value of derivatives

In order to determine the fair value of derivatives, the TIM Group uses various valuation models.

The mark-to-market calculation is determined by the present value discounting of the interest and notional future contractual flows using market interest rates and exchange rates.

The notional amount of IRS does not represent the amount exchanged between the parties and therefore does not constitute a measurement of credit risk exposure which, instead, is limited to the amount of the difference between the interest rates paid/received.

The market value of CCIRSs, on the other hand, also depends on the differential between the reference exchange rate at the date of signing the contract and the exchange rate at the date of measurement, since CCIRSs involve the exchange of the reference interest and principal, in the respective currencies of denomination.

The options are measured according to the Black & Scholes or Binomial models and involve the use of various measurements factors, such as: time horizon of the life of the option, risk-free rate of return, current price, volatility and any cash flows (e.g. dividend) of the underlying instrument, and exercise price.

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Derivatives

12 Months Ended

Dec. 31, 2017

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Derivatives

NOTE 18—DERIVATIVES

Derivative financial instruments are used by the TIM Group to hedge its exposure to foreign exchange rate risk, to manage interest rate risk and to diversify the parameters of debt so that costs and volatility can be reduced to within predetermined operational limits.

Derivative financial instruments in place at December 31, 2017 are principally used to manage debt positions. They include interest rate swaps (IRSs) to reduce interest rate exposure on fixed-rate and variable-rate bank loans and bonds, as well as cross currency and interest rate swaps (CCIRSs), currency forwards and foreign exchange options to convert the loans/receivables secured in currencies different from the functional currencies of the various Group companies.

IRS transactions, provide for or may entail, at specified maturity dates, the exchange of flows of interest, calculated on the notional amount, at the agreed fixed or variable rates.

The same also applies to CCIRS transactions which, in addition to the settlement of periodic interest flows, may provide for the exchange of principal, in the respective currencies of denomination, at maturity and possibly spot.

The following table shows the derivative financial instruments of the TIM Group at December 31, 2017 and at December 31, 2016, by type (for cross currency and interest rate swaps the notional amount refers to the synthetic coverage):

Type	Hedged Risk	Notional amount at 12/31/2017		Notional amount at 12/31/2016		Spot(*) Mark-to-Market (Clean Price) at 12/31/2017			Spot(*) Mark-to-Market (Clean Price) at 12/31/2016
		(millions of euros)
Interest rate swaps	Interest rate risk		4,334		3,334		2			42
Cross Currency and Interest Rate Swaps	Interest rate risk and currency exchange rate risk				851					46
Total Fair Value Hedge Derivatives			4,334		4,185		2			88
Cross Currency and Interest Rate Swaps	Interest rate risk and currency exchange rate risk		7,100		7,952		(325	)		551
Total Cash Flow Hedge Derivatives			7,100		7,952		(325	)		551
Total Non-Hedge Accounting Derivatives			213		484		15			51
Total TIM Group Derivatives			11,647		12,621		(308	)		690

(*) Spot Mark-to-market above represents the market measurement of the derivative net of the accrued portion of the flow in progress.

The hedging of cash flows by cash flow hedges was considered highly effective and at December 31, 2017 led to:

· recognition in equity of unrealized losses of 28 million euros;

· reversal from equity to the income statement of net expenses from exchange rate adjustments of 985 million euros.

The transactions hedged by cash flow hedges will generate cash flows and will produce economic effects in the income statement in the periods indicated in the following table:

Currency of denomination	Notional amount in currency of denomination (millions)		Start of period		End of period		Rate applied	Interest period
GBP		850		Jan-18		Jun-19	6.375%	Annually
GBP		375		Jan-18		May-23	5.875%	Annually
USD		186		Jan-18		Oct-29	5.450%	Semiannually
USD		1,000		Jan-18		Nov-33	6.375%	Semiannually
USD		1,000		Jan-18		July-36	7.200%	Semiannually
USD		677		Jan-18		Jun-18	6.999%	Semiannually
USD		1,000		Jan-18		Jun-38	7.721%	Semiannually
USD		760		Jan-18		Jun-19	7.175%	Semiannually
USD		1,000		Jan-18		Sept-34	6.000%	Semiannually
USD		1,500		Jan-18		May-24	5.303%	Semiannually
USD		186		Jan-18		Oct-29	0.750%	Semiannually

The method selected to test the effectiveness retrospectively and, whenever the principal terms do not fully coincide, prospectively, for cash flow hedge derivatives and fair value hedge derivatives is the Volatility Risk Reduction (VRR) Test. This test assesses the ratio between the portfolio risk (where the portfolio means the derivative and the item hedged) and the risk of the hedged item taken separately. In essence, the portfolio risk must be significantly less than the risk of the hedged item.

The ineffective portion recognized in the income statement from designated cash flow hedge derivatives during 2017 was negative by 23 million euros (without considering the effects due to the application of Credit Value Adjustment/Debt Value Adjustment—CVA/DVA).

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Supplementary Disclosures on Financial Instruments

12 Months Ended

Dec. 31, 2017

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Supplementary Disclosures on Financial Instruments

NOTE 19—SUPPLEMENTARY DISCLOSURES ON FINANCIAL INSTRUMENTS

Measurement at fair value

For the purposes of the comparative information between the carrying amounts and fair value of financial instruments, required by IFRS 7, the majority of the non-current financial liabilities of the TIM Group consists of bonds, whose fair value is directly observable in the financial markets, as they are financial instruments that due to their size and diffusion among investors, are commonly traded on the relevant markets (see the Note “Financial liabilities (non-current and current)”). For other types of financing, however, the following assumptions have been made in determining fair value:

· for variable-rate loans: the nominal repayment amount has been assumed;

· for fixed-rate loans: the present value of future cash flows, using market interest rates at December 31, 2017, has been assumed;

· for some types of loans granted by government institutions for social development purposes, for which fair value cannot be reliably calculated, the carrying amount has been used.

Lastly, for the majority of financial assets, their carrying amount constitutes a reasonable approximation of their fair value since these are short-term investments that are readily convertible into cash.

The fair value measurement of the financial instruments of the Group is classified according to the three levels set out in IFRS 7. In particular, the fair value hierarchy introduces three levels of input:

· Level 1: quoted prices in active market;

· Level 2: prices calculated using observable market inputs;

· Level 3: prices calculated using inputs that are not based on observable market data.

The following tables set out, for assets and liabilities at December 31, 2017 and December 31, 2016 and in accordance with the categories established by IAS 39, the supplementary disclosure on financial instruments required by IFRS 7 and the schedules of gains and losses. It does not include Discontinued operations/Non-current assets held for sale and Liabilities directly associated with Discontinued operations/Non-current assets held for sale.

Key for IAS 39 categories		Acronym
Loans and Receivables	Loans and Receivables	LaR
Financial assets Held-to-Maturity	Financial assets  Held-to-Maturity	HtM
Available-for-Sale Financial assets	Financial assets Available-for-Sale	AfS
Financial Assets/Liabilities Held for Trading	Financial Assets/Liabilities Held for Trading	FAHfT/FLHfT
Financial Liabilities at Amortized Cost	Financial Liabilities at Amortized Cost	FLAC
Hedging Derivatives	Hedging Derivatives	HD
Not applicable	Not applicable	n.a.

Carrying amount and fair value hierarchy for each category/class of financial asset/liability and comparison with their fair value at December 31, 2017

					Amounts recognized in the financial statements according to IAS 39								Levels of hierarchy or of fair value
	IAS 39 categories	Note	Carrying amounts in financial statements at 12/31/2017		Amortized cost		Cost		Fair value taken to equity		Fair value recognized in the income statement		Level 1		Level 2		Amounts recognized in financial statements according to IAS 17		Fair Value at 12/31/2017
			(millions of euros)
Assets
Loans and receivables	LaR			7,914		7,913		1												7,914
Non-current assets
Receivables from employees		9		47		47
Other financial receivables		9		150		150
Miscellaneous receivables		10		371		370		1
Current assets
Receivables from employees		9		16		16
Other short-term financial receivables		9		101		101
Cash and cash equivalents		9		3,575		3,575
Trade receivables		13		3,500		3,500
Other receivables		13		154		154
Available-for-sale financial assets	AfS			1,044				28		1,016										1,044
Non-current assets
Other investments		8		51				28		23				3		20
Securities other than investments		9		—
Current assets
Securities other than investments		9		993						993				993
Financial assets at fair value through profit or loss held for trading	FAHfT			22								22								22
Non-current assets
Non-hedging derivatives		9		7								7				7
Current assets
Non-hedging derivatives		9		15								15				15
Securities other than investments: held for trading				—
Hedging derivatives	HD			1,755						1,713		42								1,755
Non-current assets
Hedging derivatives		9		1,495						1,474		21				1,495
Current assets
Hedging derivatives		9		260						239		21				260
Financial receivables for lease contracts	n.a.			114														114		114
Non-current assets		9		69														69
Current assets		9		45														45
Total				10,849		7,913		29		2,729		64		996		1,797		114		10,849

					Amounts recognized in the financial statements according to IAS 39								Levels of hierarchy or of fair value
	IAS 39 categories	Note	Carrying amounts in financial statements at 12/31/2017		Amortized cost		Cost		Fair value taken to equity		Fair value recognized in the income statement		Level 1		Level 2		Amounts recognized in financial statements according to IAS 17		Fair Value at 12/31/2017
			(millions of euros)
Liabilities
Financial liabilities at amortized cost	FLAC/HD			33,355		33,355														36,023
Non-current liabilities
Financial payables		16		23,940		23,940														—
Current liabilities
Financial payables		16		4,500		4,500														—
Trade and miscellaneous payables and other current liabilities		23		4,915		4,915
Financial liabilities at fair value through profit or loss held for trading	FLHfT			9								9								9
Non-current liabilities
Non-hedging derivatives				5								5				5
Current liabilities
Non-hedging derivatives				4								4				4
Hedging derivatives	HD			1,985						1,966		19								1,985
Non-current liabilities
Hedging derivatives		16		1,914						1,895		19				1,914
Current liabilities
Hedging derivatives		16		71						71						71
Finance lease liabilities	n.a.			2,430														2,430		3,604
Non-current liabilities		16		2,249														2,249
Current liabilities		16		181														181
Total				37,779		33,355		—		1,966		28		—		1,994		2,430		41,621

Carrying amount and fair value hierarchy for each category/class of financial asset/liability and comparison with their fair value at December 31, 2016

					Amounts recognized in the financial statements according to IAS 39								Levels of hierarchy or of fair value
	IAS 39 categories	Note	Carrying amounts in financial statements at 12/31/2016		Amortized cost		Cost		Fair value taken to equity		Fair value recognized in the income statement		Level 1		Level 2		Amounts recognized in financial statements according to IAS 17		Fair Value at 12/31/2016
	(millions of euros)
Assets
Loans and receivables	LaR			8,631		8,629		2												8,631
Non-current assets
Receivables from employees		9		48		48
Other financial receivables		9		12		12
Miscellaneous receivables		10		399		397		2
Current Assets
Receivables from employees		9		15		15
Other short-term financial receivables		9		102		102
Cash and cash equivalents		9		3,964		3,964
Trade receivables		13		3,925		3,925
Other receivables		13		166		166
Available-for-sale financial assets	AfS			1,426				27		1,399										1,426
Non-current assets
Other investments		8		46				27		19				2		17
Securities other than investments		9		1						1				1
Current Assets
Securities other than investments		9		1,379						1,379				1,379
Financial assets at fair value through profit or loss held for trading	FAHfT			207								207								207
Non-current assets
Non-hedging derivatives		9		39								39				39
Current Assets
Non-hedging derivatives				28								28				28
Securities other than investments: held for trading				140								140		140
Hedging derivatives	HD	9		2,682						2,578		104								2,682
Non-current assets
Hedging derivatives		9		2,497						2,454		43				2,497
Current Assets
Hedging derivatives		9		185						124		61				185
Financial receivables for lease contracts	n.a.			160														160		160
Non-current assets		9		101														101
Current Assets		9		59														59
Total				13,106		8,629		29		3,977		311		1,522		2,766		160		13,106

					Amounts recognized in the financial statements according to IAS 39								Levels of hierarchy or of fair value
	IAS 39 categories	Note	Carrying amounts in financial statements at 12/31/2016		Amortized cost		Cost		Fair value taken to equity		Fair value recognized in the income statement		Level 1		Level 2		Amounts recognized in financial statements according to IAS 17		Fair Value at 12/31/2016
	(millions of euros)
Liabilities
Financial liabilities at amortized cost	FLAC/HD			35,259		35,259														35,517
Non-current liabilities
Financial payables		16		26,136		26,136
Current liabilities
Financial payables		16		3,784		3,784
Trade and miscellaneous payables and other current liabilities		22		5,339		5,339
Financial liabilities at fair value through profit or loss held for trading	FLHfT			24								24								24
Non-current liabilities
Non-hedging derivatives		14		13								13				13
Current liabilities
Non-hedging derivatives		16		11								11				11
Hedging derivatives	HD			1,945						1,943		2								1,945
Non-current liabilities
Hedging derivatives		16		1,876						1,874		2				1,876
Current liabilities
Hedging derivatives		16		69						69						69
Finance lease liabilities	n.a.			2,636														2,636		3,921
Non-current liabilities		16		2,444														2,444
Current liabilities		16		192														192
Total				39,864		35,259		—		1,943		26		—		1,969		2,636		41,407

Gains and losses by IAS 39 category—Year 2017

	IAS 39 categories	Net gains/ (losses), 2017(1)			Of which interest
	(millions of euros)
Loans and receivables	LaR		(356	)		118
Available-for-sale financial assets	AfS		8
Financial Assets/Liabilities Held for Trading	FAHfT e FLHfT		(19	)
Financial liabilities at amortized cost	FLAC		(1,338	)		1,376
Total			(1,705	)		1,494

(1) Of which 2 million euros relates to fees and expenses not included in the effective interest rate calculation on financial assets/liabilities other than those at fair value through profit or loss.

Gains and losses by IAS 39 category—Year 2016

	IAS 39 categories	Net gains/ (losses), 2016(1)			Of which interest
	(millions of euros)
Loans and receivables	LaR		(258	)		139
Available-for-sale financial assets	AfS		12
Financial Assets/Liabilities Held for Trading	FAHfT/FLHfT		456
Financial liabilities at amortized cost	FLAC		(1,454	)		1,481
Total			(1,244	)		1,620

(1) Of which, 2 million euros relates to fees and expenses not included in the effective interest rate calculation on financial assets/liabilities other than those at fair value through profit or loss.

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Employee Benefits

12 Months Ended

Dec. 31, 2017

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Employee Benefits

NOTE 20—EMPLOYEE BENEFITS

Employee benefits increased by 448 million euros compared to December 31, 2016 and are summarized as follows:

		As of December 31, 2015		Increases/ Present value		Decrease			Exchange differences and other changes			As of December 31, 2016
		(millions of euros)
Provision for employee severance indemnities	(A)		1,018		49		(59	)		1			1,009
Provision for pension plans			23		7		(2	)					28
Provision for termination benefit incentives and Corporate restructuring expenses			413		101		(160	)		(6	)		348
Total other provisions for employee benefits	(B)		436		108		(162	)		(6	)		376
Total	(A+B)		1,454		157		(221	)		(5	)		1,385
Of which:
Non-current portion			1,420										1,355
Current portion(*)			34										30

(*) The current portion refers only to Other provisions for employee benefits.

		As of December 31, 2016		Increases/ Present value			Decrease			Exchange differences and other changes			As of December 31, 2017
		(millions of euros)
Provision for employee severance indemnities	(A)		1,009		—			(51	)		—			958
Provision for pension plans and other			28		(2	)		(1	)		(3	)		22
Provision for termination benefit incentives and Corporate restructuring expenses			348		689			(177	)		(7	)		853
Total other provisions for employee benefits	(B)		376		687			(178	)		(10	)		875
Total	(A+B)		1,385		687			(229	)		(10	)		1,833
Of which:
Non-current portion			1,355											1,736
Current portion(*)			30											97

(*) The current portion refers only to Other provisions for employee benefits.

The Provision for employee severance indemnities only refers to Italian companies and decreased overall by 51 million euros due to drawdowns in the year for termination benefits paid and advance payments. “Increases/Present value” showed a nil balance from the net effect of the following factors:

	Year ended December 31,
	2017			2016		2015
	(millions of euros)
(Positive)/negative effect of curtailment		(6	)
Current service cost (*)
Finance expenses		14			16		22
Net actuarial (gains) losses for the year		(8	)		33		(16	)
Total		—			49		6
Effective return on plan assets		there are no assets servicing the plan

(*) Following the social security reform in 2007, the portions intended for the INPS Treasury Fund or for the supplementary pension funds have been recorded under “Employee benefits expenses”, in “Social security expenses”, and not as “Employee severance indemnities expenses”. The latter account will still be used only for the accruals of companies with less than 50 employees, amounting to 0.3 million euros in 2017 (essentially unchanged compared to 2016 and 2015).

Curtailment had a positive effect due to the updating of actuarial forecasts following the commencement by the Parent, between the end of 2017 and the beginning of 2018, of the corporate restructuring plan (further details are provided in the Note “Employee benefits expenses”).

The net actuarial gains recognized at December 31, 2017, totaling 8 million euros (net actuarial losses of 33 million euros for 2016), essentially related to the change in the discount rate to 1.30% (1.31% at December 31, 2016) while the inflation rate remained unchanged (1.5% for the entire time horizon).

According to national law, the amount of provision for employee severance indemnities to which each employee is entitled depends on the period of service and must be paid when the employee leaves the company. The amount of severance indemnity due upon termination of employment is calculated on the basis of the period of employment and the taxable compensation of each employee. This liability is adjusted annually based on the official cost-of-living index and legally-set interest. The liability is not associated with any vesting condition or period or any funding obligation; accordingly, there are no assets servicing the provision. The liability is recognized net of the partial prepayments of the fund and the payments of the amounts obtained by employees for the reasons permitted by the applicable regulations.

Under the regulations introduced by Italian Legislative Decree 252/2005 and Law 296/2006 (the State Budget Law 2007), for companies with at least 50 employees, the severance indemnities accruing from 2007 are assigned, as elected by the employees, to either the INPS Treasury Fund or to supplementary pension funds and take the form of a “defined contribution plan”.

However, for all companies, the revaluations of the amounts in the provision for employee severance indemnities existing at the election date, and also the amounts accrued and not assigned to supplementary pension plans for companies with less than 50 employees, are retained in the provision for employee severance indemnities. In accordance with IAS 19 (2011), the provision has been recognized as a “defined benefit plan”.

In application of IAS 19, the employee severance indemnities have been calculated using the “Projected Unit Credit Method” as follows:

· the future possible benefits which could be paid to each employee registered in the program in the event of retirement, death, disability, resignation etc. have been projected on the basis of a series of financial assumptions (cost-of-livingincreases, interest rate, increase in compensation etc.). The estimate of future benefits includes any increases for additional service seniority, as well as the estimated increase in the compensation level at the measurement date—only for employees of companies with less than 50 employees during the year 2006;

· the average present value of future benefits has been calculated, at the measurement date, on the basis of the annual interest rate adopted and the probability that each benefit actually has to be paid;

· the liability of each company concerned has been calculated as the average present value of future benefits that will be generated by the existing provision at the measurement date, without considering any future accruals (for companies with at least 50 employees during the year 2006) or by identifying the amount of the average present value of future benefits which refer to the past service already accrued by the employee in the company at the measurement date (for the others), i.e. adopting the “service pro-rate”.

The following assumptions have been made:

FINANCIAL ASSUMPTIONS	Executives	Non-executives
Inflation rate	1.50% per annum		1.50% per annum
Discount rate	1.30% per annum		1.30% per annum
Employee severance indemnities annual increase rate	2.625% per annum		2.625% per annum
Annual real wage growth:
equal to or less than 40 years of age	1.0% per annum		1.0% per annum
over 40 but equal to or less than 55 years of age	0.5% per annum		0.5% per annum
over 55 years of age	0.0% per annum		0.0% per annum

DEMOGRAPHIC ASSUMPTIONS	Executives	Non-executives
Probability of death	RG 48 mortality tables published by “Ragioneria Generale dello Stato”	RG 48 mortality tables published by “Ragioneria Generale dello Stato”
Probability of disability	INPS tables divided by age and sex	INPS tables divided by age and sex
Probability of resignation:
up to 40 years of age	6.50%	1.00%
From 41 to 50 years of age	2.00%	0.50%
From 51 to 59 years of age	2.00%	0.50%
From 60 to 64 years of age	20.00%	6.50%
Over 65 years of age	None	None
Probability of retirement	Reaching the minimum requisites established by the Obligatory General Insurance updated on the basis of Italian Law 214 of December 22, 2011
Probability of receiving at the beginning of the year an advance from the provision for severance indemnities accrued equal to 70%	1.5% per annum	1.5% per annum

The adoption of the above assumptions resulted in a liability for employee severance indemnities at December 31, 2017 of 958 million euros (1,009 million euros at the end of 2016).

Reported below is a sensitivity analysis for each significant actuarial assumption adopted to calculate the liability as at year end, showing how the liability would have been affected by changes in the relevant actuarial assumption that were reasonably possible at that date, stated in amounts.

The weighted average duration of the obligation is 10.9 years.

CHANGES IN ASSUMPTIONS	Amounts (millions of euros)
Turnover rate:
+0.25 p.p.		(2	)
- 0.25 p.p.		2
Annual inflation rate:
+0.25 p.p.		17
- 0.25 p.p.		(17	)
Annual discount rate:
+0.25 p.p.		(23	)
- 0.25 p.p.		24

The Provision for pension plans amounted to 22 million euros at December 31, 2017 (28 million euros at December 31, 2016) and mainly represented pension plans in place at foreign companies that are part of the Group.

Provision for termination benefit incentives and Corporate restructuring expenses increased in total by 505 million euros, representing the balance between provisions allocated at the commencement of the new corporate restructuring plan of 689 million euros and drawdowns for terminations under the previous plan ended on December 31, 2017 of -177 million euros. More details are provided in the Note “Employee benefits expenses”.

For further details please see Note “Employee benefits expenses”.

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Provisions

12 Months Ended

Dec. 31, 2017

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Provisions

NOTE 21—PROVISIONS

Provisions increased by 133 million euros compared to December 31, 2016. The figure breaks down as follows:

	As of December 31, 2016		Increase		Used through income statement			Used directly			Exchange differences and other changes			As of December 31, 2017
	(millions of euros)
Provision for taxation and tax risks		119		18					(31	)		(13	)		93
Provision for restoration costs		326		28					(4	)					350
Provision for legal disputes		457		260		(1	)		(107	)		(4	)		605
Provision for commercial risks		46		6					(18	)		(6	)		28
Provision for risks and charges on investments and corporate-related transactions		28				(2	)					6			32
Other provisions		8		8		(1	)		(4	)		(2	)		9
Total		984		320		(4	)		(164	)		(19	)		1,117
Of which:
Non-current portion		830													825
Current portion		154													292

The non-current portion of provisions for risks and charges mainly related to the provision for restoration costs and a portion of the provision for legal disputes. More specifically, in accordance with accounting policies, the total amount of the provision for restoration costs is calculated by re-measuring the amounts for which a probable outlay is envisaged, based on the estimated inflation rates for the individual due dates, and subsequently discounted to the reporting date based on the average cost of debt, taking into account cash outflow forecasts.

The Provision for taxation and tax risks fell by 26 million euros compared to December 31, 2016 due to draw downs by the Brazil Business Unit (16 million euros) and the Parent TIM S.p.A. (10 million euros).

The Provision for restoration costs related to the provision for the estimated cost of dismantling tangible assets (in particular: batteries, wooden poles and equipment) and for the restoration of the sites used for mobile telephony by companies belonging to the Domestic Business Unit (344 million euros) and to the Brazil Business Unit (6 million euros).

The Provision for legal disputes included the provision for litigation with employees, social security entities, regulatory authorities and other counterparties.

The figure at December 31, 2017 included 518 million euros for the Domestic Business Unit and 87 million euros for the Brazil Business Unit. Draw downs mainly consisted of 79 million euros for the Brazil Business Unit and 28 million euros for the Domestic Business Unit and were essentially related to settlement agreements reached.

The Provision for commercial risks fell by 18 million euros compared to December 31, 2016 and related to companies belonging to the Domestic Business Unit.

The Provision for risks and charges on investments and corporate-related transactions remained essentially unchanged compared to the previous year and related to the Domestic Business Unit.

Other provisions showed no change compared to December 31, 2016 and included 7 million euros in relation to companies belonging to the Domestic Business Unit.

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Miscellaneous Payables and Other Non-Current Liabilities

12 Months Ended

Dec. 31, 2017

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Miscellaneous Payables and Other Non-Current Liabilities

NOTE 22—MISCELLANEOUS PAYABLES AND OTHER NON—CURRENT LIABILITIES

Miscellaneous payables and other non-current liabilities increased by 71 million euros compared to December 31, 2016 and are summarized as follows:

	As of December 31,
	2017		2016
	(millions of euros)
Payables to social security agencies		238		116
Capital grants		391		371
Deferred income		988		1,033
Income tax payables (*)		45		66
Other		16		21
Total		1,678		1,607

(*) Analyzed in the Note “Income tax expense”.

Payables to social security agencies related to the residual amount due to the INPS for estimated employee benefit obligations owed under Law 58/1992, as well as—from 2015—the amount due to the INPS for the application of the 2015 arrangements relating to Article 4 paragraphs 1-7ter, of Italian Law 92 of June 28, 2012, the “Fornero” law (see the Note “Employee benefits expenses” for more details). Details are as follows:

	As of December 31,
	2017		2016
	(millions of euros)
Non-current payables:
Due from 2 to 5 years after the end of the reporting period		226		107
Due beyond 5 years after the end of the reporting period		12		9
		238		116
Current payables		58		69
Total		296		185

The item capital grants represents the component yet to be released to the income statement based on the remaining useful life (estimated at approximately 18 years) of the assets that the grants refer to. The 20 million euros increase at December 31, 2017, is mainly related to the construction of infrastructure for the Ultra-Broadband-UBB and Broadband-BB projects.

Medium/long-term deferred income mainly included:

· the effect of the deferral of revenues from the activation of the TIM S.p.A. telephone service for 265 million euros compared to 268 million euros at December 31, 2016;

· the non-current portion of approximately 226 million euros of the deferred gain on the sale and lease back of the telecommunication towers of the Brazil Business Unit;

· the effect, for the most part, of the deferral of revenues from the sale of transmission capacity to the Sparkle group for 154 million euros.

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Trade and Miscellaneous Payables and Other Current Liabilities

12 Months Ended

Dec. 31, 2017

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Trade and Miscellaneous Payables and Other Current Liabilities

NOTE 23—TRADE AND MISCELLANEOUS PAYABLES AND OTHER CURRENT LIABILITIES

Trade and miscellaneous payables and other current liabilities increased by 126 million euros compared to December 31, 2016 and were broken down as follows:

		As of December 31,
		2017				2016
				Of which IAS 39 Financial Instruments				Of which IAS 39 Financial Instruments
		(millions of euros)
Payables on construction work	(A)		19				25
Trade payables:
Payables to suppliers			4,262		4,262		4,532		4,532
Payables to other telecommunication operators			383		383		323		323
	(B)		4,645		4,645		4,855		4,855
Tax payables	(C)		584				292
Miscellaneous payables and other current liabilities:
Payables for employee compensation			245				319
Payables to social security agencies			202				215
Trade and miscellaneous deferred income			508				488
Advances received			69				53
Customer-related items			602		77		847		199
Payables for “TLC operating fee”			15				15
Dividends approved, but not yet paid to shareholders			19		19		33		33
Other current liabilities			223		174		320		252
Employee benefits (except for Employee severance indemnities) for the current portion expected to be settled within 1 year			97				30
Provisions for risks and charges for the current portion expected to be settled within 1 year			292				154
	(D)		2,272		270		2,474		484
Total	(A+B+C+D)		7,520		4,915		7,646		5,339

Further details on Financial Instruments are provided in the Note “Supplementary disclosure on financial instruments”.

Trade payables amounting to 4,645 million euros (4,855 million euros at December 31, 2016), mainly related to TIM S.p.A. (3,127 million euros) and to companies belonging to the Brazil Business Unit (1,094 million euros).

Tax payables amounted to 584 million euros (292 million euros at December 31, 2016) and related mainly to TIM S.p.A.. The item included VAT payable (385 million euros), the payable for the government concession tax (20 million euros) and withholding tax payables to the tax authorities as withholding agent (72 million euros). They also included other tax payables of the Brazil Business Unit of 87 million euros.

Trade and miscellaneous deferred income refer mainly to the Parent TIM S.p.A. and include 131 million euros for interconnection charges, 175 million euros for the deferral of revenues from the activation of the telephone service, 21 million euros for traffic and charges, 51 million euros for rent and maintenance payments and 4 million euros for outsourcing contract charges.

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Contingent Liabilities, Other Information, Commitments and Guarantees

12 Months Ended

Dec. 31, 2017

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Contingent Liabilities, Other Information, Commitments and Guarantees

NOTE 24—CONTINGENT LIABILITIES, OTHER INFORMATION, COMMITMENTS AND GUARANTEES

A description is provided below of the most significant judicial, arbitration and tax disputes in which TIM Group companies are involved as at December 31, 2017, as well as those that came to an end during the period. The TIM Group has provisioned 461 million euros for those disputes described below where the risk of losing the case has been considered probable.

A) SIGNIFICANT DISPUTES AND PENDING LEGAL ACTIONS

Telecom Italia Sparkle—Relations with I-Globe, Planetarium, Acumen, Accrue Telemedia and Diadem: investigation by the Public Prosecutor’s Office of Rome

In September 2017, the Rome Appeal’s Court rejected the appeal lodged by the Prosecutor’s office, confirming the acquittal of the three former managers ordered in the first instance by the Court of Rome permanently ending the proceedings against these managers. The Public Prosecutor’s Office had challenged the judgment of the Court of Rome of October 2013 with which the three former managers of Telecom Italia Sparkle were fully acquitted from the charges of transnational conspiracy for the purpose of tax evasion and false declarations through the use of invoices or other documents for non-existent transactions (a “carousel fraud”); in November 2017 the Rome Public Prosecutor’s Office ordered that the criminal case against Telecom Italia Sparkle, which had been under investigation pursuant to legislative decree 231 for alleged criminal conspiracy and transnational money laundering, also be dismissed.

At the same time, it was ordered that the sum of 1,549,000 euros be returned to the Company. This sum had been seized earlier, and corresponded to the maximum fine that could be imposed for the administrative offence of which the Company had been accused. The funds are expected to be returned in early 2018.

With respect to risks of a fiscal nature in February 2014 the Revenues Agency (Lazio Regional Office) served three formal notifications of fines for the years 2005, 2006 and 2007, based on the assumption that the telephone traffic in the “carousel fraud” did not exist. The amount of the fines calculated as 25% of the “crime related costs” unduly deducted totaled 280 million euros. The Company had filed an appeal to the Provincial Tax Commission of Rome in April 2014. The Commission rejected the appeal in May 2016.

The Company appealed to the Regional Tax Commission of Lazio in October 2016, opposing the judgment in the first instance, requesting a suspension of the enforcement of this first instance judgment subject to presentation of an appropriate guarantee. In December 2016, the Regional Tax Commission granted this suspension, fixing the date for a hearing on the merits in April 2017. On April 5, 2017, the appeal was discussed before the Regional Tax Commission of Lazio. On April 26, 2017, the second-tier ruling was filed rejecting the Company’s appeal. Also in April 2017, an application was filed for the dismissal of the case opened by Equitalia following the unfavorable judgment of the Rome Provincial Tax Commission concerning the application for payment of 2/3rds of the sanction imposed earlier by the Revenues Agency; this reduced the overall risk to 93 million euros and the dispute continued but limited to that amount.

Thereafter, following the introduction of regulations on the facilitated settlement of pending tax litigation, the Company arranged to settle the entire case and paid approximately 37 million euros in October 2017, corresponding to 40% of the sanction still under dispute. The dispute has therefore been settled.

International tax and regulatory disputes

As at December 31, 2017, the Brazil Business Unit is involved in tax and regulatory disputes, the outcome of which is estimated as a possible loss amounting to 14.5 billion reais. The main types of disputes involved are listed below, classified on the basis of the taxation level to which they relate.

Federal Tax

On March 22, 2011 TIM Celular was served notice of a tax assessment issued by the Federal Tax Authorities of Brazil for a total sum of 1,265 million reais as of the date of the notification, including fines and interest, as a result of the completion of a tax investigation of financial years 2006, 2007, 2008 and 2009 for the companies TIM Nordeste Telecomunicações S.A. and TIM Nordeste S.A (previously called Maxitel), companies which have been progressively incorporated into TIM Celular with the aim of rationalizing the corporate structure in Brazil.

The assessment notice includes various adjustments; the main claims may be summarized as follows:

· non-recognition of the fiscal effects of the merger of TIM Nordeste Telecomunicações S.A. and Maxitel S.A.;

· non-recognition of the tax-deductibility of the write-down of goodwill relating to the purchase of Tele Nordeste Celular Participações S.A. (“TNC”).

· denial of certain tax offsets;

· denial of the SUDENE territorial tax benefit due to alleged irregularities in the management and reporting of the benefit.

The adjustments included in the assessment notice were challenged by TIM Celular, in administrative proceedings, through the presentation of its first objections on April 20, 2011. On April 20, 2012, TIM Celular received notification of the decision of the administrative court of first instance which confirmed the findings set out in the assessment notice; TIM Celular promptly filed an appeal against this decision on May 21, 2012.

The Company, as confirmed by fitting legal opinions, believes it is unlikely that the company could suffer any negative consequences in relation to these matters.

At the federal level, disputes involving the following are also noted:

· use of tax losses;

· tax deductibility of the amortization of goodwill;

· taxation on income from certain types of exchange movements;

· withholding of taxes on certain types of payments made abroad (for example, payments for international roaming);

· offsetting between debt taxes and credit positions of group companies.

The overall risk involved in connection with these cases that is considered possible amounts to 3.7 billion reais.

State Taxes

In connection with state taxes, there are numerous disputes regarding ICMS², and in particular:

· disputes concerning the reduction of the tax base through discounts granted to customers: in addition to disputes regarding the use of tax credits declared by group companies against the repayment of telephone terminals on loan, and following the detection of subscription fraud perpetrated against the companies, subjecting certain types of fees to ICMS, accrued in favor of group companies and classified by them as fees for services other than telecommunications;

· disputes concerning the use of the “PRO-DF” tax benefit originally granted by some states and subsequently declared unconstitutional (the dispute refers to the actual credit for ICMS, declared by the TIM Celular Company on the basis of the aforementioned facilitation provisions);

· disputes relating to the use of credits for ICMS, recognized by Group companies as a result of the acquisition of tangible assets, and in relation to the supply of electricity to the Companies, as well as in the application of the provisions on the subject of tax substitution;

· penalties imposed on group companies for irregularities in declaratory compliance.

2 ICMS—imposto sobre circulação de mercadorias e services de tranporte intermunicipal, interestadual e de comunicação—is a type of value added tax and is levied on supplies of goods, interstate and inter-municipal transportation services, communication services and imports of goods. ICMS is regulated by state legislation issued by each state within the limits defined by the Constitution. The finance departments of states (Secretarias da Fazenda) are in charge of the administration and collection of ICMS.

Overall, the risk for these cases that considered possible amounts to 7.4 billion reais.

FUST and FUNTTEL

The main complaints concerning the contributions to the regulatory body (Anatel), and in particular in terms of FUST and FUNTTEL, concern the subjection of revenues from interconnection to these withdrawals.

Altogether the risk for such cases, considered possible, amounts to 2.7 billion reais.

Administrative offence charge pursuant to Legislative Decree 231/2011 for the so-called TIM Security Affair.

In December 2008 TIM received notification of the application for its committal for trial for the administrative offense specified in articles 21 and 25, subsections 2 and 4, of legislative decree no. 231/2001 in relation to the affairs that involved several former employees of the Security function and former collaborators of the Company charged among other things with offences involving corruption of public officials, with the object of acquiring information from confidential files. In May 2010 TIM ceased being a defendant in the criminal trial, after the Judge for the Preliminary Hearing approved the motion for settlement of the proceedings (plea bargaining) presented by the Company. In the hearing before Section One of the Milan Court of Assizes, TIM acted in the dual role of civil party and civilly liable party. In fact, on the one hand it was admitted as civil party against all the defendants for all charges, and on the other it was also cited as the party with civil liability pursuant to article 2049 of the Italian Civil Code for the actions of the defendants in relation to 32 civil parties. Telecom Italia Latam and Telecom Italia Audit and Compliance Services (now incorporated into TIM) also participated in the hearing as civil parties, having filed appearances since the Preliminary Hearing and brought charges against the defendants for hacking.

After the lengthy evidentiary hearings, 22 civil parties filed claims for compensation, including against TIM as civilly liable party, for over 60 million euros with one party requesting over 42 million euros. The Company itself, as civil party, also summarized its conclusions against the defendants, requesting that they be found liable for all the damages suffered as a result of the facts of the case. In February 2013, Section 1 of the Milan Court of Assizes issued the first instance judgment, sentencing the defendants to terms of imprisonment of between 7 years and 6 months and one year. The Court also recognized that there had been non-pecuniary damage to some of the civil parties as a consequence of the alleged facts, and sentenced the defendants, jointly and severally with civilly liable party TIM, to compensate said damages, totaling 270,000 euros (in part jointly and severally with Pirelli) plus legal fees; at the same time the Court also sentenced the defendants to pay compensation for pecuniary and non-pecuniary damages incurred by the Company, granting it a provisional sum of 10 million euros. The judgment also recognized the existence of non-pecuniary damage to the companies Telecom Italia Latam and Telecom Italia Audit & Compliance Services, sentencing the defendants to pay compensation for damages on an equitable basis of 20,000 euros for each company. In November 2013 the grounds for the judgment in the first instance were published (which, for its part, the Company decided not to contest). At the end of the appeal, which was brought by the convicted defendants, the judgment in the first instance was partly reversed. The appeal judge took note of the fact that the time-limit had expired on the majority of the charges, and made an order not to proceed against the defendants who had been convicted in the lower court, with the exception of two, who were found guilty of the offence of revealing information which was subject to a prohibition on disclosure. As for the civil judgments, the Court revoked those made by the judge of first instance and ruled in favor of three ministries, AGCM and the Revenues Agency. The Court also decided to revoke the provisional sum of 10 million euros awarded to the Company as civil party at the end of the proceedings in the court of first instance, making a generic ruling that the defendants should pay compensatory civil damages. Finally, the appeal judge also rejected all the demands for compensation advanced on appeal by certain civil parties for a total of about 60 million euros, in respect of which the Company has the role of party liable for damages. At the end of the appeal, therefore, the appeals court upheld the prior ruling, confirming that TIM, as the party liable for damages, had already paid the parties. The three defendants brought an appeal to the Court of Cassation against the judgment of appeals court issued by the Milan Appeal Court of Assizes, for which, no preliminary hearing has yet been scheduled.

— · —

It should be noted that for some of the disputes described below, it was not possible to make a reliable estimate of the size and/or times of possible payments, if any, on the basis of the information available at the closing date of the present document, particularly in light of the complexity of the proceedings, the progress made, and the elements of uncertainty of a technical-trial nature. Moreover, in those cases in which disclosure of information on a dispute could seriously jeopardize the position of TIM or its subsidiaries, only the general nature of the dispute is described.

Antitrust Case A428

At the conclusion of case A428, in May 2013, Italian Competition Authority AGCM imposed two administrative sanctions of 88,182,000 euros and 15,612,000 euros on TIM for abuse of its dominant position. The Company allegedly (i) hindered or delayed activation of access services requested by OLOs through unjustified and spurious refusals; (ii) offered its access services to final customers at economic and technical conditions that allegedly could not be matched by competitors purchasing wholesale access services from TIM itself, only in those geographic areas of the Country where disaggregated access services to the local network are available, and hence where other operators can compete more effectively with the Company.

TIM appealed against the decision to the Regional Administrative Court (TAR) for Lazio, requesting that payment of the fine be suspended. In particular, it alleged: infringement of its rights to defend itself in the proceedings, the circumstance that the organizational choices challenged by AGCM and allegedly at the base of the abuse of the OLO provisioning processes had been the subject of specific rulings made by the industry regulator (AGCom), the circumstance that the comparative examination of the internal/external provisioning processes had in fact shown better results for the OLOs than for the TIM retail department (hence the lack of any form of inequality of treatment and/or opportunistic behavior by TIM), and (regarding the second abuse) the fact that the conduct was structurally unsuitable to reduce the margins of the OLOs.

In May 2014, the judgment of the Lazio TAR was published, rejecting TIM’s appeal and confirming the fines imposed in the original order challenged. In September 2014 the Company appealed against this decision.

In May 2015, with the judgment no. 2497/15, the Council of State found the decision of the court of first instance did not present the deficiencies alleged by TIM and confirmed the AGCM ruling. The company had already proceeded to pay the fines and the accrued interest.

In a decision notified in July 2015, AGCM started proceedings for non-compliance against TIM, to ascertain if the Company had respected the notice to comply requiring it to refrain from undertaking behaviors analogous to those that were the object of the breach ascertained with the concluding decision in case A428 dated May 2013.

On January 13, 2017 TIM was notified of the conclusive assessment of the Italian Competition Authority (AGCM), acknowledging that TIM has fully complied with the judgment in proceedings A428 and that therefore the conditions did not exist for the imposition of any sanctions for non-compliance.

AGCM also recognized that TIM’s behavior subsequent to the 2013 proceedings had been focused on continuous improvement of its performance in the supply of wholesale access services concerning not only the services which were the subject of the investigation, but also new, super-fast broadband access services. In assessing compliance, AGCM recognized the positive impact of the ongoing implementation of TIM’s New Equivalence Model (NME). The AGCM decision orders TIM to: (i) proceed with the implementation of the NME until its completion which is expected to be by April 30, 2017; (ii) to inform the Authority about the performance levels of the systems for providing wholesale access services and about the completion of the corresponding internal reorganization plan by the end of May 2017. The Company quickly complied with both orders, and AGCOM communicated its satisfaction on August 9, 2017.

Vodafone lodged an appeal with the Lazio Regional Administrative Court against the final decision in the proceedings for non-compliance taken by AGCM. TIM filed an appearance, as it did in the further proceedings brought in the month of March 2017 by the operators CloudItalia, KPNQ West Italia S.p.A. and Digitel.

Vodafone (A428)

In August 2013, Vodafone, as incorporating company of operator Teletu, submitted to the Milan Court a huge claim for damages for presumed abusive and anticompetitive behavior (founded principally on ICA case A428) which TIM allegedly implemented in the period 2008-2013. The pecuniary claim was quantified by Vodafone as an estimated sum of between 876 million euros and 1,029 million euros.

In particular, Vodafone alleged technical boycotting activities, with refusal to activate lines requested for Teletu customers (in the period from 2008 to the month of June 2013), together with the adoption of allegedly abusive price policies for wholesale network access services (period from 2008 to the month of June 2013). Furthermore, the other party complained of the presumed application of discounts to business customers greater than those envisaged (“margin squeezing”) and the carrying out of presumed illegal and anticompetitive winback practices (in the period from the second half of 2012 to the month of June 2013).

TIM filed an appearance, challenging the claims made by the other party regarding the merits and the amount and making a counterclaim. Following the August 2016 decision by the Court of Cassation which confirmed that the Milan Court had jurisdiction to decide the dispute, the merits of the case will be decided at the hearing in December 2016.

With a writ of summons dated May 28, 2015 before the Milan Court, Vodafone has advanced further claims for compensation, based on the same ICA case A428 and referring to alleged damages it suffered in the period July 2013-December 2014 (and therefore over a period of time subsequent to the period of the similar compensatory judgment mentioned above), for approximately 568.5 million euros.

The case also contains a reservation of further damages to be quantified, during the proceedings, for the following periods, the claimant alleging that the presumed abusive conduct of TIM continued. TIM filed an appearance, challenging the claims made by the other party regarding the merits and the amount and making a counterclaim.

In an order made on October 6, 2016, the judge accepted Vodafone’s petition to join the two A428 proceedings it had initiated. At the end of the reinstatement proceedings of December 21, the terms were established for the preliminary briefs and a hearing was fixed for July 11, 2017 for the admission of evidence. When the first preliminary brief was filed, following the favorable outcome for TIM of proceedings A428-C (which confirmed the absence of improper conduct by the Company under A428 after 2011), Vodafone decided nonetheless to file further claims for 2015-2016, thus restating its total claim to be 1,812 million euros, which was also disputed and rebutted by TIM.

COLT TECHNOLOGY SERVICES

With a writ of summons served in August 2015 before the Milan Court, operator Colt Technology Services claimed damages based on the decisive order in case A428, referring to alleged damages suffered over the period 2009/2011, due to the presumed inefficient and discriminatory conduct of TIM in the process of supplying wholesale services. The damage claimed was quantified as 27 million euros in loss of profits for the alleged non-acquisition of new customers, or for the alleged impossibility of supplying new services to the customers it had already acquired; the other party also formulated a request for compensation for the damages to its image and commercial reputation. This case follows the extrajudicial claim for approximately 23 million euros, previously advanced by Colt in June 2015, which the Company rejected in its entirety. TIM filed an appearance, contesting all of the plaintiff’s allegations.

KPNQ West Italia S.p.A.

With a writ of summons issued by the Rome Court, KPNQ West Italia sued TIM, claiming damages totaling 37 million euros for alleged abusive and anti-competitive conduct in the period 2009-2011, through technical boycotting (refusals to activate wholesale services—KOs); these claims were based on the content of the Italian Competition Authority ruling that settled the A428 case. The first hearing took place in May 2016. TIM filed an appearance, contesting all of the plaintiff’s allegations.

TELEUNIT

With a writ of summons before the Rome Court, Teleunit claimed 35.4 million euros in compensation from TIM, based on the known decision of the Italian Competition Authority that settled the A428 case. Specifically, the other party complained that in the period 2009/2010 it had suffered abusive conduct on TIM’s part in the form of technical boycotting (refusals to activate network access services—KOs), and anticompetitive practices in the form of margin squeezing (excessive squeezing of discount margins, considered abusive inasmuch as it cannot be replicated by competitors). Telecom Italia filed an appearance, contesting all of the plaintiff’s allegations.

With a writ of summons issued in October 2009 before the Milan Appeal Court, Teleunit asked that TIM alleged acts of abuse of its dominant position in the premium services market be ascertained. The plaintiff quantified its damages at a total of approximately 362 million euros. TIM filed an appearance, contesting the claims of the other party.

After the ruling of January 2014 with which the Court of Appeal declared that it was not competent in this matter and referred the case to the Court, Teleunit reinstated the case before the Milan Court the following April. TIM filed an appearance in the reinstated proceedings challenging the plaintiff’s claims.

In its May 2017 judgment, the Milan Court rejected Teleunit’s claim in its entirety, and ordered the company to pay the legal costs of the case. This judgment was appealed by Teleunit, in June 2017, before the Milan Court of Appeal. The Company filed an appeal challenging the arguments presented by the other party and asking that the judgment in the first instance be fully confirmed.

SIPORTAL

The claim brought against TIM by Siportal is pending before the Rome Court. It claims a total of approximately 48.4 million euros for alleged damages due to the technical boycotting it suffered from 2009 to 2011 and the inertial effects of the abuse since 2015, with the loss of commercial partners and further customer acquisitions (the last damage item has been quantified as 25 million euros). The suit is based on the known Competition Authority ruling that settled case A428. The Company filed an appearance, rejecting all of the other party’s allegations.

Competition Authority case I-761

With a ruling issued on July 10, 2013, AGCM (the Italian Competition Authority) included TIM in the investigation started in March 2013 into firms active in the fixed network maintenance sector. The investigation aims to establish if an agreement prohibited under article 101 of the Treaty on the Functioning of the European Union existed among firms.

The proceedings were initiated after Wind filed two complaints in which the ICA was informed that, based on an invitation to bid for the assignment of network corrective maintenance services, it had encountered substantial uniformity of prices offered by the aforementioned enterprises and a significant difference from the offers submitted subsequently by other and different companies.

The ICA alleged that TIM carried out a role of coordinating the other parts of the procedure, both during the formulation of the offers requested by Wind and in relation to the positions represented to communications regulator AGCom.

TIM challenged these proceedings before the Administrative Court (TAR), sustaining that the ICA does not have competence in this matter.

On July 7, 2014, the ICA announced the extension of the proceedings to confirm whether the Company, abusing its dominant position, put in place initiatives that might influence the conditions of the offer of accessory technical services when the offers of the maintenance businesses to Wind and Fastweb were being formulated. With the extension provision, the ICA has also extended the deadline for closing the proceedings from the original date of July 31, 2014 to July 31, 2015. This extension was also challenged before the Lazio Administrative Court (TAR) sustaining that the Italian Competition Authority does not have competence in this matter.

In November 2014, for reasons of procedural economy and also convinced that it was acting legitimately, TIM presented to the Authority a proposal of undertakings in order to resolve the competition concerns subject of the investigation. In its resolution of 19 December 2014 the ICA considered that these undertakings were not manifestly groundless and later ordered their publication for the purposes of market testing.

On March 25, 2015, the ICA definitively rejected the aforesaid undertakings, considering them not suitable for removing the anticompetitive aspects investigated.

On July 21, 2015 the Communication of the Results of the Investigation was served on the parties to the proceedings, in which the Offices of ICA expressed their position in the sense of (i) archiving the complaints regarding the abuse of dominant position and (ii) confirming, instead, that there exists between TIM and the maintenance firms an agreement to coordinate the economic offers drawn up for Wind and Fastweb, and to prevent the unbundled supply of the ancillary technical services.

On December 16, 2015, the final order was issued, confirming the conclusions of the Communication of the Results of the Investigation, sustaining that, between 2012 and 2013, there existed an agreement that restricted competition, and as a result imposed on the Company a fine of 21.5 million euros. In March 2016, the Company payed it. The relevant market is the corrective maintenance (assurance) market and, more precisely, the market for troubleshooting the TIM LLU lines. The purpose of the conduct maintained by the Company and the network firms would have been to limit competition and prevent the evolution of forms of unbundled supply of ancillary technical services.

TIM appealed the order before the Lazio Regional Administrative Court. In judgment no. 09554/2016 issued in September 2016, the appeal was dismissed, and the Company appealed this decision to the Council of State.

WIND (I-761)

With a writ of summons before the Court of Milan, Wind sought a 57 million euro compensation from TIM for damages arising from alleged anti-competitive conduct censured in the ICA case I-761 (on corrective maintenance). According to the plaintiff, this conduct delayed and hindered its ability to obtain more favorable conditions in the unbundled purchase of service to repair faults on the LLU access lines, and their effects, initially stated to have been lasted until December 2015 and subsequently alleged by Wind to be ongoing, TIM filed an appearance challenging the plaintiff’s requests.

VODAFONE (I-761)

With a writ of summons before the Milan Court, Vodafone sued TIM and other network companies, seeking compensation from the Company of approximately 193 million euros for damages arising from alleged anti-competitive conduct censured in the ICA case I-761(on corrective maintenance) referring to the period from 2011 to 2017.

Vodafone alleges TIM breached competition rules, in the wholesale markets giving access to its fixed network (LLU lines; Bitstream; WLR), through the abuse of a dominant market position and an unlawful agreement with the maintenance companies to maintain the monopoly on the offer of corrective maintenance services on its network. In particular this restrictive agreement would have concerned the coordination, by the Company, of the financial conditions contained in the offers formulated by the aforementioned companies with respect to the OLOs, for the maintenance service, at artificially high prices with respect to the cost of the maintenance included in the regulated access subscription charge, in order to make it seem as if the unbundling of the service itself were not convenient. The Company filed an appearance, contesting all of the other party’s requests.

Competition Authority case A514

In June 2017 the Italian Competition Authority (AGCM) started proceedings A514 against TIM, to ascertain a possible abuse of its dominant market position in breach of article 102 of the Treaty on the Functioning of the European Union. The proceedings were started based on complaints filed in May and June 2017, by Infratel, Enel, Open Fiber, Vodafone and Wind Tre, and concerns a presumed abuse of TIM’s dominant position in the market for wholesale access services and for retail services using the broadband and ultrabroadband fixed network. In particular, the ICA hypothesized that TIM had adopted conduct aimed at: i) slowing and hindering the course of the Infratel tender processes so as to delay, or render less remunerative the entry of another operator in the wholesale market; ii) pre-emptively securing customers on the retail market for ultrabroadband services by means of commercial policies designed to restrict the space of customer contendibility remaining for the competitor operators.

After the start of the proceedings, the Authority’s officials carried out an inspection at some of TIM’s offices in the month of July 2017. The case should be concluded by the end of October 2018. On November 2, 2017, TIM lodged a defense in which, in support of the correctness of its actions, it challenged all the arguments that the behavior it had allegedly indulged in, and which are the object of the case, were actually unlawful.

Case “I799”

On February 1, 2017, AGCM initiated investigation proceedings for possible breaches of Article 101 TFEU (ban on competition-restricting agreements) against TIM S.p.A. and Fastweb S.p.A., following the signing of an agreement aimed at establishing a joint cooperative enterprise Flash Fiber S.r.l.. In agreement with Fastweb, TIM has submitted several amendments to the agreements signed to the AGCM, in the form of proposed commitments, aimed at settling the proceedings without accepting the violation and, therefore, without any financial penalty. On December 20, 2017, AGCM decided to extend the deadline for the evaluation of the proposed commitment to February 28, 2018, and the deadline for the conclusion of the proceedings to July 31, 2018.

On April 9, 2018 AGCM notified TIM and Fastweb the approvial of the proposed commitments and closed the proceeding without the imposition of any fine.

Vodafone

In June 2015 Vodafone issued proceedings for damages in the Milan Court for alleged abuse of a dominant position by TIM in the bitstream “NGA” and “VULA” fibre access services market, initially claiming around 4.4 million euros, increased to a figure ranging from 30 to 48.9 million euros.

The complaint alleged that TIM implemented aggressive offers to obtain customers hindering of Vodafone’s access to the fibre network to make it more difficult for it to provide ultrabroadband service to its customers.

The Company filed an appearance contesting all the allegation of the other party, and subsequently also its revision of the size of the damages claimed during the proceedings in 2016.

EUTELIA and VOICEPLUS

In June 2009, Eutelia and Voiceplus asked that alleged acts of abuse by TIM of its dominant position in the premium services market (based on the public offer of services provided through so-called Non Geographic Numbers) be investigated. The complainants quantified their damages at a total of approximately 730 million euros.

The case follows a precautionary procedure in which the Milan Appeal Court prohibited certain behaviors of the Company relating to the management of some financial relations with Eutelia and Voiceplus concerning the Non Geographic Numbers, for which TIM managed the payments from the end customers, on behalf of such OLOs and in the light of regulatory requirements. After the ruling with which the Milan Court of Appeal accepted TIM’s objections, declaring that it was not competent in this matter and referring the case to the Civil Court, Eutelia in extraordinary administration and Voiceplus in liquidation resubmitted the matter to the Milan Court. The first hearing took place in the month of March 2014. TIM filed an appearance challenging the claims of the other parties.. After the collapse of Voiceplus, the Milan Court declared the case suspended, in an order in September 2015. The case was later resumed by Voiceplus.

With a judgment issued in February 2018, the Milan Court accepted TIM’s defense and rejected the plaintiffs’ claim for compensation, ordering them to pay the legal costs.

SKY

In 2016, TIM initiated civil proceedings against SKY Italia in the Milan Court, asking the court to void a contract signed by the two companies in April 2014 for the delivery and marketing, between 2015 and 2019, of the SKY IPTV (Internet Protocol Television) offer on the TIM IPTV platform, due to abuse of dominant position by Sky Italia.

In the alternative, the Company also asked the court to reduce to a fair level the amounts demanded by SKY by way of the so-called Guaranteed Minimums (“penalties”) alleging that they were established to SKY’s advantage and related to predetermined customer sign-up and churn-rate thresholds in the five years of the partnership.

SKY filed an appearance in February 2017, challenging TIM’s claim and demanding payment of the Guaranteed Minimums it claimed to have accrued, a request which was opposed by the Company. The proceedings are ongoing and the next hearing is scheduled for May 2018.

28 day billing

Resolution 121/17/CONS, of March 2017, with which AGCOM supplemented its resolution 252/16/CONS, constitutes the concluding act of a regulatory process intended to safeguard price transparency and comparability of economic terms and conditions.

Resolution 121/17/CONS, inter alia, introduced instructions on billing intervals for telephony, prescribing, specifically for fixed telephony, that the interval should be monthly, or multiples thereof, and, for mobile telephony, that it should be at least four-weekly.

TIM appealed Resolution 121/17/CONS to the Regional Administrative Court, alleging that AGCOM was exceeding its powers; the judgement rejecting the appeal was published on February 12, 2018.

TIM will challenge the decision to the Council of State.

In December 2017, AGCOM, with Resolution 499/17/CONS, found that TIM had breached the provisions of Resolution 121/17, by adopting intervals of a month, or multiples thereof, as the basis for billing its fixed telephony offers. It fined TIM 1,160,000 euros, ordering it take action—when the billing cycle was restored to monthly or multiples thereof—to reverse the charges levied for the number of days after June 23, 2017 that the users had not used the service due to the lack of alignment between the four-weekly and the monthly billing cycle.

TIM also appealed this second Resolution to the Regional Administrative Court of Lazio, asking for a preliminary suspension which, on February 22, 2018, was accepted by the Regional Administrative Court of Lazio limited to the reimbursement orders and the scheduling the hearing for consideration of the merits on November 14, 2018.

Law no. 172 of December 4, 2017 decreed that contracts for the supply of electronic communications services should obligatorily prescribe that the renewal of offers and the invoicing of services be based on a month, or multiples thereof.

TIM will adapt to this order within the period of time prescribed by law, namely, within 120 days of April 5, 2018 when the law goes into effect.

On March 7, 2018, TIM was notified of a further resolution (Resolution 112/2018/CONS) with which AGCOM (i) warned the Company, with regard to fixed phone services only, to postpone the starting date of invoices issued after the return to monthly invoicing by the same number of days as those presumably deducted starting from June 23, 2017 with the four-weekly invoicing cycle; and (ii) revoked in the part resolution 499/17/CONS, in which TIM was warned to reverse the amounts presumed eroded starting from 23/6/2017 with the four-weekly invoicing cycle. TIM will challenge the aforementioned resolution before the Lazio TAR.

The economic value of the amounts requested for the reversal is difficult to calculate, as it depends on the churn of individual customers, the type of contract and its effective date.

The Company—supported by legal advisors—considered the risk of the emergence of a significant liability as being only possible, and not probable, and therefore did not make any provision.

Lastly, on February 19, 2018 the AGCM initiated a I820 preliminary, statutory investigation against the companies TIM, Vodafone, Fastweb, Wind-Tre and the Association of category (ASSTEL) to determine whether an understanding existed aiming to limit competition between the main fixed and mobile telephony operators through the coordination of their respective commercial strategies in violation of art. 101 TFEU.

The alleged coordination, according to AGCM, would have been carried out through the execution of the obligations introduced by Article 19 quinquiesdecies of Legislative Decree no. 148/2017 (converted by Law no. 172/2017) which requires operators of electronic communication services to provide monthly (or more than once a month) invoicing and renewal of the offers for fixed and mobile services. The deadline for the closing of the proceedings is set for March 31, 2019.

On March 21, 2018, AGCM issued a provisional precautionary measure against all the operators involved in the proceedings with which it ordered the suspension, pending the proceedings, of the implementation of the agreement concerning the determination of repricing communicated to users at the time of reformulating the billing cycle in compliance with Law no. 172/17 and to independently redetermine its commercial strategy. The precautionary measure was confirmed by AGCM on April 11, 2018 against all the operators involved.

Golden Power

In August 2017 the office of the Prime Minister initiated proceedings against TIM and Vivendi in order to verify the fact that TIM has an obligation to notify, pursuant to the Golden Power provisions, Vivendi’s acquisition of corporate control of TIM and the strategic assets it holds. In September 2017, the proceedings in question concluded by ascertaining that this obligation did exist for TIM effective as of May 4, 2017 the date of the shareholders’ meeting that renewed TIM’s corporate bodies.

As a result of this decision of the office of the Prime Minister a new administrative procedure was started that remains ongoing for the possible imposition on TIM of a pecuniary sanction according to the Golden Power provisions for non-compliance with the notification obligation the economic value of this sanction could be no less than 1% of the “cumulative turnover achieved by the companies involved” in the transaction subject to non-notification, based on the results of the last financial statements approved.

The Company believe it will be able to demonstrate that there were no obligations to notify with respect to Vivendi’s control and it has already submitted an extraordinary appeal to the President of the Republic to request the cancellation of the order of September 2017.

Moreover, the office of the Prime Minister exercised the special powers laid down by the Golden Power provision through two specific rulings in October and November 2017 with which it set specific prescriptions and conditions on TIM S.p.A. and the companies of the Telecom Italia group Sparkle and Telsy Elettronica e Telecomunicazioni.

The prescriptions, according to the Administrative Authority, are premised on understanding that these companies, in part, perform activities relevant for national security and as far as TIM is concerned to the fact that it owns the infrastructure and the systems used to provide access to end-users of services covered by the universal service obligation.

Any failure on the part of the recipients of the orders to execute the conditions and prescriptions is sanctioned in the same way as failure to notify significant acts for the purpose of the application of Golden Power provisions.

The companies subject to the prescriptions are required to send periodic reports to a special Monitoring Committee established at the office of the Prime Minister in order to verify compliance with the aforementioned prescriptions.

In December 2017 the Group sent the office of the Prime Minister the first compliance report outlining all the proposals and activities put in place to follow through with the prescriptions.

TIM has also submitted an extraordinary appeal to the President of the Republic in this instance to request cancellation of the orders in question.

Formal Notice of Assessments against TIM S.p.A.

On October 29, 2015 the Guardia di Finanza concluded a tax investigation into TIM S.p.A., started in 2013, regarding the years 2007 to 2014. The formal notice of assessment (Processo Verbale di Costatazione, or PVC) contained two substantial findings. The first related to the presumed non-debiting of royalties to the company’s indirect subsidiary TIM Brasil, for the use of the “TIM” brand. The second regarded the alleged non-application of withholding tax on interest paid to subsidiary Telecom Italia Capital S.A.

In this regard, on the basis of the aforementioned formal notice of assessment, the Milan Revenues Agency in December 2015 served assessment notices on the company for the 2010 tax year, and in December 2016 it served assessment notices for the tax years 2007 and 2011.

While believing, on the basis of opinions issued by established professionals, that it has acted correctly in fulfilling all its tax obligations, the Company has attempted to come to an agreement with the Revenues Agency. Having failed to reach an agreement, as already occurred for the 2010 tax year, the Company has filed an appeal with the Provincial Tax Commission against the assessment notices relating to the 2007 and 2011 tax years too.

Following additional in-depth analyses and reciprocal evaluations, the Company and the Revenues Agency reached an overall agreement in December 2017 to settle the disputes relating to all the aforementioned years, by establishing verification with acceptance and an out-of-court settlement. The agreement resulted in a total charge of around 48 million euros in taxes, interest and fines.

Vodafone Dispute—Universal Service

In a decision published in July 2015, the Council of State rejected the appeal lodged by AGCom and TIM against the judgment of the Lazio Administrative Court (TAR) on the financing of the universal service obligations for the period 1999-2003; with this judgment the judge had granted the appeals by Vodafone, annulling AGCom decisions 106, 107, 109/11/CONS on the renewal of the related proceedings, which included Vodafone among the subjects required to contribute, for a sum of approximately 38 million euros. Essentially, the judgment confirms that the Authority has not demonstrated the particular degree of “replaceability” between fixed and mobile telephony for mobile operators to be included among the subjects required to repay the cost of the universal service, which means that AGCom needs to issue a new ruling.

TIM has filed an application with AGCom to renew the proceedings, and an appeal against the judgment of the Court of Appeal to the Court of Cassation (which subsequently ruled that the appeal was inadmissible).

In April 2016 Vodafone appealed against the Ministry of Economic Development and TIM to the Council of State, for non-compliance with the judgment of the Council of State that had already been appealed by TIM. This appeal referred to AGCom decision 109/11/CONS (2003 yearly payment, on the basis of which Vodafone had paid the sum of approximately 9 million euros as contribution, restitution of which was requested).

In its judgment of November 2016, the Council of State rejected the appeal, referring to the Regional Administrative Court (TAR) the decision on the methods of compliance. In February 2017, Vodafone presented the Lazio Regional Administrative Court with four new appeals against the Ministry of Economic Development and TIM regarding observance of the ruling, upheld on appeal, countermanding the resolutions for the years 1999-2003 and repayment of the amounts of around 38 million euros already paid to the Ministry of Economic Development as a contribution.

Dispute relative to “Adjustments on license fees” for the years 1994-1998

With respect to the judgments sought in previous years concerning the Ministry of Communications’ request for payment of the balance of the amounts paid in concession charges for the years 1994-1998 (for a total of 113 million euros), the Administrative Court (TAR) for Lazio rejected the Company’s appeal against the request for adjustment of the license fee for 1994 in the amount of approximately 11 million euros, 9 million euros of which against turnover not received due to bad debts. TIM lodged an appeal.

With two further judgments the Administrative Court (TAR) for Lazio, reiterating the reasons expressed previously, also rejected the appeals in which the Company challenged the requests for payment of outstanding balances of license fees for the years 1995 and 1996-1997-1998, in the amount of approximately 46 million euros. TIM has appealed before the Council of State also against these judgments.

Olivetti—Asbestos exposure

In September 2014 the Ivrea Public Prosecutor’s Office closed the investigations into the alleged exposure to asbestos of 15 former employees of the company “Ing. C. Olivetti S.p.A.” (now TIM S.p.A.), “Olivetti Controllo Numerico S.p.A”, “Olivetti Peripheral Equipment S.p.A.”, “Sixtel S.p.A.” and “Olteco S.p.A” and served notice that the investigations had been concluded on the 39 people investigated (who include former Directors of the aforementioned companies).

On December 2014 the Ivrea Public Prosecutor’s Office formulated a request for 33 of the 39 people originally investigated to be committed for trial, and at the same time asked that 6 investigations be archived.

During the preliminary hearing, which started in April 2015, TIM assumed the role of civilly liable party, after being formally summonsed by all 26 civil parties (institutions and natural persons) joined in the proceedings. At the end of the preliminary hearing, 18 of the original 33 persons accused were committed for trial. The trial started in November 2015, and, as the party liable for damages, the Company has reached a settlement agreement with 12 of the 18 individuals (heirs/injured persons/family members) who are civil parties to the dispute and they have, therefore, withdrawn the claim for damages against TIM.

In the judgment of first instance, in July 2016, 13 of the 18 defendants were found guilty, with sentences ranging from 1 year to 5 years of imprisonment: four of the defendants were found not guilty, and one case was dismissed for health reasons. The defendants were also sentenced to pay compensation, jointly and severally with the party liable for damages TIM, of an overall sum of approximately 1.9 million euros as a provisional payment to INAIL and 6 heirs who were not part of the settlement. A generic judgment to pay compensation for damages to the remaining damaged parties (entities/unions/associations) was issued, although they must in any case ask the civil court to quantify the damages.

The Company has challenged the reasons for the first instance ruling and the proceedings are now pending before the Court of Appeal of Turin. The Company also signed settlement agreements with the last 6 heirs that were civil party, reaching settlements with all the heirs and family members who had been civil parties in the criminal proceedings.

POSTE

There are some pending disputes at the end of 1990s, brought by Ing. C. Olivetti & C. S.p.A. (now TIM) against Poste, the Italian postal service, concerning non-payment of services rendered under a series of contracts to supply IT goods and services. The judgments issued in the lower courts established an outcome that was partially favorable to the ex-Olivetti, and have been appealed against by Poste in individual re-hearings.

In this respect, while a judgment of the Rome Appeal Court in 2009 confirmed one of the outstanding payables to TIM, another judgment by the same Court declared void one of the disputed contracts. After this judgment, Poste had issued a writ for the return of approximately 58 million euros, opposed by TIM given that the judgment of the Supreme Court for amendment of the above judgment is still pending.

After the judgment of the Supreme Court in 2012 that quashed and remanded the decision of the Appeal Court on which the order was based, the Rome Court declared that the matter of issue in the enforcement proceedings was discontinued, since the claim made by Poste had been rejected. The judgment was resubmitted to another section of the Rome Appeal Court.

Elinet S.p.A. Bankruptcy

The receivers of collapsed Elinet S.p.A., and subsequently the receivers of Elitel S.r.l. and Elitel Telecom S.p.A (the controller of the Elitel group at the time), have appealed in 2014 the judgment with which the Rome Court rejected the claims for compensation made by the receivers of Elinet-Elitel, reproposing a claim for damages totaling 282 million euros. The claims made involve the alleged performance of management and coordination activities of the plaintiff, and with it the Elitel group (alternative operator in which TIM has never had any type of interest), allegedly enacted by playing the card of trade receivables management. TIM filed an appearance, challenging the claims made by the other party.

Brazil—Opportunity Arbitration

In May 2012, TIM and Telecom Italia International N.V (now merged in Telecom Italia Finance) were served with a notice of arbitration proceedings brought by the Opportunity group, claiming compensation for damages allegedly suffered for presumed breach of a settlement agreement signed in 2005. Based on the claimant’s allegations, the damages relate to circumstances that emerged in the criminal proceedings pending before the Milan Court regarding, inter alia, unlawful activities engaged in by former employees of TIM.

The investigatory phase having been completed, the hearing for oral discussion took place in November 2014, after which the parties filed their concluding arguments in preparation for the decision on the case.

In September 2015, the Board of Arbitration declared the proceedings closed, as the award was going to be filed.

Subsequently, the Board of Arbitration allowed the parties to exchange short arguments and the ICC (International Chamber of Commerce) Court extended the term for the filing of the award.

In September 2016 the ICC Court notified the parties of its judgment, based on which the Board of Arbitration rejected all the claims made by the Opportunity group and decided that the legal costs, administrative costs and costs for expert witnesses should be split between the parties.

In April 2017 the Opportunity group filed an appeal against the arbitration award before the Paris Court of Appeal.

In November 2017, TIM and Telecom Italia Finance received from the Secretariat of the ICC’s International Court of Arbitration notice of a Request for Revision of the arbitration award finding, filed by the Opportunity group, asking for the issuance of a new award on the basis of the requests made in the Opportunity Arbitration. The Board of Arbitration is in the process of being constituted.

Brazil—CAM JVCO Arbitration

In September 2015, JVCO Participações Ltda filed a request for arbitration before the Camara de Arbitragem do Mercado (CAM), based in Rio de Janeiro, against TIM, Telecom Italia International, (today merged into Telecom Italia Finance-TIF), Tim Brasil Serviços e Participações S.A. and Tim Participações S.A., claiming compensation for damages due to an alleged abuse of controlling power over TIM Participações. The following October, all the companies entered appearances and filed statements of defense, and Tim Participações, by way of a counter-claim, called for the condemnation of JVCO for abuse of its position as minority shareholder.

A Board of Arbitration was subsequently established, and in May 2016 there was a preliminary hearing, at which the Terms of Reference were signed. After the hearing, the Board of Arbitration issued a procedural order accepting the Group’s request for a preliminary examination of the issue of whether JVCO were entitled to bring proceedings and establishing a provisional schedule for the arbitration. In June the parties exchanged claims and counterclaims, and in their defense TIM, Telecom Italia International, Tim Brasil Serviços e Participações S.A. and Tim Participações S.A. contested the other party’ entitlement to bring proceedings and the standing to be sued of Tim Participações, and disputed that there was any abuse of power. In July 2016, the parties filed their responses. On 19 October the Board of Arbitration issued a preliminary procedural order on the legitimacy of the proceedings brought by the parties, upholding the right of JVCO to bring the claim and the standing to be sued of Tim Participações, and fixing the timetable for subsequent replies by the parties. On November 21 and December 19, 2016 the parties filed further replies. On January 31, 2017, the Board of Arbitration issued a procedural order, ruling on trial questions, summarizing the principal disputed questions in the proceedings and making provision in relation to the preliminary investigation. The parties then indicated the evidence they intend to submit in court. Subsequently the Board of Arbitration fixed the dates for the hearings.

The hearings took place in Rio De Janeiro in June 2017, and were followed by further filings of documentation and pleadings.

In March 2018, all the parties to the proceedings filed their final briefs.

B) OTHER INFORMATION

Mobile telephony—criminal proceedings

In March 2012 TIM was served notice of the conclusion of the preliminary enquiries, which showed that the Company was being investigated by the Public Prosecutor of Milan pursuant to the Legislative Decree n. 231/2001, for the offences of handling stolen goods and counterfeiting committed, according to the alleged allegations, by fourteen employees of the so-called “ethnic channel”, with the participation of a number of dealers, for the purpose of obtaining undeserved commissions from TIM.

The Company, as the injured party damaged by such conduct, had brought two legal actions in 2008 and 2009 and had proceeded to suspend the employees involved in the criminal proceedings (suspension later followed by dismissal). It has also filed an initial statement of defense, together with a technical report by its own expert, requesting that the proceedings against it be suspended, and that charges of aggravated fraud against the Company be brought against the other defendants. In December 2012, the Public Prosecutor’s Office filed a request for 89 defendants and the Company itself to be committed for trial.

During the preliminary hearing, the Company was admitted as civil party to the trial and, in November 2013, the conclusions in the interest of the civil party were filed, reaffirming TIM’s total lack of involvement in the offences claimed.

At the end of the preliminary hearing, which took place in March 2014, the Judge for the Preliminary Hearing committed for trial all the defendants (including TIM) who had not asked for their situation to be settled with alternative procedures, on the grounds that “examination in a trial” was needed. In April 2016, at the end of the first part of the trial, the Public Prosecutor asked for TIM to be sentenced to pay an administrative fine of 900 thousand euros, but decided not to ask for confiscation of any of the presumed profits of the offences (quantified in the committal proceedings as totaling several million euros), based on the assumption that TIM had in any event remedied the presumed organizational inadequacies. While acknowledging the considerable redimensioning of the accusations, the Company has reiterated its total non-involvement in the facts at issue. In November 2016 the Court gave a verdict acquitting the Company on the grounds that there was no case to answer. All the individuals charged were also acquitted on various grounds. The acquittal judgment is not final, as it was challenged in April 2017 by the Public Prosecutor who sought appeal before the Court of Cassation.

Dispute concerning the license fees for 1998

TIM has issued civil proceedings against the Presidenza del Consiglio dei Ministri (the office of the Prime Minister) for compensation of the damage caused by the Italian State through appeal judgment no. 7506/09 by the Council of State that, in the view of the Company, violates the principles of current European community law.

The main claim which the proceedings are founded on is based on community jurisprudence that recognizes the right to assert the responsibility of the State in relation to violation of rights recognized in community law and injured by a judgment that has become definitive, in respect of which no other remedy may be applied. The judgment of the Council of State definitively denied the right of TIM to restitution of the concession charge for 1998 (totaling 386 million euros for Telecom Italia and 143 million euros for the former TIM Company, plus interest), already denied by the Lazio regional administrative court despite the favorable and binding opinion of the European Court of Justice in February 2008 concerning the conflict between EC Directive 97/13 on general authorizations and individual licenses in the telecommunications services industry, and the national regulations that had deferred, for 1998, the obligation to pay the fee payable by telecommunications concession holders, despite the intervening deregulation process. The Company then proposed an alternative compensation claim, within the sphere of the same proceedings, for tort pursuant to art. 2043 of the Italian Civil Code. The compensation claimed has been quantified as approximately 529 million euros, plus legal interest and revaluation. The Avvocatura di Stato filed an appearance and submitted a counterclaim for the same sum. The case is subject to eligibility analysis by the Court, which declared the inadmissibility of TIM’s main claim (case for damages for manifest breach of community law pursuant to law 117/88). However, this decision was amended in favor of the Company on appeal. In March 2015 the Rome Court issued its judgment in the first instance, declaring the Company’s application inadmissible. TIM has appealed this decision and the judgment is pending in the closing arguments phase.

Vodafone (previously TELETU)

There is a pending litigation for compensation started by TIM with a summons dated February 2012 against the operator TELETU (now incorporated into Vodafone) for unlawful refusals regarding reactivation with TIM of the competitor’s customers. The claim was quantified as approximately 93 million euros.

Other liabilities connected with the disposal of assets and investments

Within the scope of agreements for the sale of assets and companies, the TIM Group committed to indemnifying the purchasers in the event of liabilities mainly arising in connection with issues of a legal, tax, social security or labor law nature, at an amount normally set as a percentage of the purchase price.

The contingent liabilities in question amount to approximately 500 million euros. Accordingly, a total of approximately 20 million euros in provisions for risks were allocated to cover only those cases considered likely to result in the payment of an indemnity.

In relation to other sales of assets and investments, the TIM Group committed to the payment of other indemnities relating to specific contractual provisions. The contingent liability connected with such indemnities cannot be presently determined.

C) COMMITMENTS AND GUARANTEES

Guarantees, net of back-to-back guarantees received, amounted to 57 million euros.

The guarantees provided by third parties for Group company obligations, amounting to 4,500 million euros, consisted of guarantees for loans received (1,580 million euros) and performance guarantees under outstanding contracts (2,920 million euros).

The guarantees provided by third parties for TIM S.p.A. obligations include the surety issued in favor of the Ministry of Economic Development for 38 million euros, for the commitment made by the Company to build equipment networks with eco-sustainablecharacteristics. In particular, the Company has made a commitment to achieve energy savings in the new LTE technologies of approximately 10% on infrastructure and 20% on transmission devices over a period of 5 years (compared to energy consumed by current technology). The Ministry of Economic Development has requested the extension of the guarantee until December 31, 2018.

Main guarantees for loans at December 31, 2017

Issuer	Amount (millions of euros)
BBVA—Banco Bilbao Vizcaya Argentaria		368
SACE		368
Intesa Sanpaolo		220
Cassa Depositi e Prestiti		157
Ing		105
Unicredit		105
Commerzbank		58
Banco Santander		52
Sumitomo Mitsui Banking		52
Bank of Tokyo—Mitsubishi UFJ		52

The amounts shown in the table relate to loans issued by the EIB for the TIM Broadband Digital Divide, TIM Ricerca & Sviluppo Banda Larga, TIM Rete Mobile a Banda Larga, and TIM RDI for Broadband Services projects.

It is noted that the following guarantees from:

· Bank of Tokyo—Mitsubishi UFJ of 52 million euros,

· BBVA—Banco Bilbao Vizcaya Argentaria of 157 million euros, and

· Intesa Sanpaolo of 105 million euros,

relating to the loan granted by the EIB for the TIM Broadband Digital Divide/B project, and repaid in advance in the amount of 300 million euros on December 27, 2016, will remain valid for 13 months after the repayment as provided in the agreement to protect against clawback risk.

There are also surety bonds on the telecommunication services in Brazil for 469 million euros.

D) ASSETS PLEDGED TO GUARANTEE FINANCIAL LIABILITIES

The contracts for low-rate loans granted by the Brazilian development bank BNDES (Banco Nacional de Desenvolvimento Econômico e Social) to Tim Celular for a total equivalent amount of 1,064 million euros are covered by specific covenants. In the event of non-compliance with the covenant obligations, BNDES will have a right to the logs of bank accounts of the company.

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Revenues

12 Months Ended

Dec. 31, 2017

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Revenues

NOTE 25—REVENUES

Revenues amounted to 19,828 million euros in 2017, 19,025 million euros in 2016 and 19,719 million euros in 2015, increasing by 803 million euros from 2016 to 2017 compared to a decrease of 694 million euros from 2015 to 2016.

Details are as follows:

	Year ended December 31,
	2017		2016			2015
	(millions of euros)
Equipment sales		1,560		1,378			1,474
Services		18,264		17,655			18,258
Revenues on construction contracts		4		(8	)		(13	)
Total		19,828		19,025			19,719

Revenues from telecommunications services are presented gross of amounts due to other TLC operators equal to 1,737 million euros in 2017, compared to 1,686 million euros in 2016, a 3.02% increase, and 1,713 million euros in 2015. Such amounts are included in the costs of services.

For a breakdown of revenues by operating segment/geographical area, reference should be made to the Note “Segment Reporting”.

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Other Income

12 Months Ended

Dec. 31, 2017

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Other Income

NOTE 26—OTHER INCOME

Other income amounted to 523 million euros in 2017, 311 million euros in 2016 and 287 million euros in 2015, increasing by 212 million euros from 2016 to 2017 compared to an increase of 24 million euros from 2015 to 2016.

Details are as follows:

	Year ended December 31,
	2017		2016		2015
	(millions of euros)
Late payment fees charged for telephone services		59		60		59
Recovery of employee benefit expenses, purchases and services rendered		22		33		32
Capital and operating grants		51		36		33
Damage compensation, penalties and sundry recoveries		35		24		25
Partnership agreements		116		71		—
Release of provisions and other payable items, other income		240		87		138
Total		523		311		287

Other income reflects contribution fees resulting from partnership agreements signed with leading technology suppliers. These agreements are aimed at developing collaboration between the parties, in order to strengthen and stabilize the business and industrial relationship over time, to actively contribute to TIM’s marketing plan for the development and use of several strategic services. The item also includes insurance indemnities and updates estimates of liabilities related to customer and supplier accounts.

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Acquisition of Goods and Services

12 Months Ended

Dec. 31, 2017

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Acquisition of Goods and Services

NOTE 27—ACQUISITION OF GOODS AND SERVICES

Acquisition of goods and services amounted to 8,388 million euros in 2017, 7,793 million euros in 2016 and 8,532 million euros in 2015, increasing by 595 million euros from 2016 to 2017 compared to a decrease of 739 million euros from 2015 to 2016.

Details are as follows:

			Year ended December 31,
			2017		2016		2015
			(millions of euros)
Acquisition of raw materials and merchandise	(A)			1,863		1,614		1,811
Costs of services:
Revenues due to other TLC operators				1,737		1,686		1,713
Interconnection costs				28		26		24
Commissions, sales commissions and other selling expenses				1,109		937		984
Advertising and promotion expenses				277		294		414
Professional and consulting services				223		186		366
Utilities				467		484		483
Maintenance				242		289		334
Outsourcing costs for other services				513		447		455
Mailing and delivery expenses for telephone bills, directories and other materials to customers				96		100		84
Other service expenses				572		522		610
	(B)			5,264		4,971		5,467
Lease and rental costs:
Rent and leases				739		702		699
TLC circuit lease rents and rents for use of satellite systems				298		288		343
Other lease and rental costs				224		218		212
	(C)			1,261		1,208		1,254
Total	(A+B+C	)		8,388		7,793		8,532

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Employee Benefits Expenses

12 Months Ended

Dec. 31, 2017

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Employee Benefits Expenses

NOTE 28—EMPLOYEE BENEFITS EXPENSES

Employee benefits expenses amounted to 3,626 million euros in 2017, 3,106 million euros in 2016 and 3,589 million euros in 2015, increasing by 520 million euros from 2016 to 2017 compared to a decrease of 483 million euros from 2015 to 2016.

Details are as follows:

		Year ended December 31,
		2017		2016		2015
		(millions of euros)
Employee benefits expenses
Wages and salaries			2,056		2,116		2,296
Social security expenses			745		770		834
Other employee benefits			110		37		2
	(A)		2,911		2,923		3,132
Costs and provisions for temp work	(B)		—		—		—
Miscellaneous expenses for personnel and other labor-related services rendered:
Charges for termination benefit incentives			28		10		11
Corporate restructuring expenses			680		156		439
Other			7		17		7
	(C)		715		183		457
Total	(A+B+C)		3,626		3,106		3,589

Employee benefits expenses mainly reflect expenses related to the Domestic Business Unit of 3,266 million euros in 2017, 2,759 million euros in 2016 and 3,206 million euros in 2015, and the Brazil Business Unit of 353 million euros in 2017, 336 million euros in 2016 and 349 million euros in 2015.

“Corporate restructuring expenses” totaled 680 million euros and mainly included the net impact connected with the commencement of the new company restructuring plan for TIM S.p.A., which will unfold over the entire period of the 2018–2020 Industrial Plan and is designed to support the digital transformation process by drawing on all measures provided by law. Specifically, the plan will involve, inter alia, the application of Article 4 (1–7ter) of Law 92 of June 28, 2012 (the “Fornero Law”) for executive and non-executive personnel (which provides for early retirement arrangements), as well as the use of measures for economic sustainability.

The average salaried workforce, including those with temporary work contracts, was 54,946 in 2017 (57,855 in 2016 and 61,553 in 2015). A breakdown by category is as follows:

	Year ended December 31,
	2017		2016		2015
	(Full time equivalent units)
Executives		707		837		892
Middle management		4,269		4,450		4,585
White collars		49,967		52,563		56,065
Blue collars		1		1		8
Employees on payroll		54,944		57,851		61,550
Employees with temp work contracts		2		4		3
Total average headcount of salaried workforce		54,946		57,855		61,553

Headcount in service at December 31, 2017, including those with temporary work contracts, was 59,429, 61,229 at December 31, 2016 and 65,867 at December 31, 2015, showing a decrease of 1,800 employees.

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Other Operating Expenses

12 Months Ended

Dec. 31, 2017

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Other Operating Expenses

NOTE 29—OTHER OPERATING EXPENSES

Other operating expenses amounted to 1,208 million euros in 2017, 1,083 million euros in 2016 and 1,491 million euros in 2015, increasing by 125 million euros from 2016 to 2017 compared to a decrease by 408 million euros from 2015 to 2016 .

Details are as follows:

	Year ended December 31,
	2017		2016		2015
	(millions of euros)
Write-downs and expenses in connection with credit management		400		335		345
Provision charges		228		144		330
TLC operating fees and charges		356		373		342
Indirect duties and taxes		111		100		116
Penalties, settlement compensation and administrative fines		33		44		292
Association dues and fees, donations, scholarships and traineeships		15		18		18
Sundry expenses		65		69		48
Total		1,208		1,083		1,491
of which, included in the supplementary disclosure on financial instruments		400		335		345

Further details on Financial Instruments are provided in the Note “Supplementary disclosure on financial instruments”.

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Internally Generated Assets

12 Months Ended

Dec. 31, 2017

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Internally Generated Assets

NOTE 30—INTERNALLY GENERATED ASSETS

Internally generated assets amounted to 626 million euros in 2017, 639 million euros in 2016 and 656 million euros in 2015, decreasing by 13 million euros from 2016 to 2017 compared to a decrease of 17 million euros from 2015 to 2016.

Details are as follows:

	Year ended December 31,
	2017		2016		2015
	(millions of euros)
Intangible assets with a finite useful life		272		289		312
Tangible assets owned		354		350		344
Total		626		639		656

Internally generated assets mainly include labor costs of dedicated technical staff for software development and work in connection with the executive design, construction and testing of network installations.

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Depreciation and Amortization

12 Months Ended

Dec. 31, 2017

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Depreciation and Amortization

NOTE 31—DEPRECIATION AND AMORTIZATION

Depreciation and amortization amounted to 4,473 million euros in 2017, 4,291 million euros in 2016 and 4,135 million euros in 2015, increasing by 182 million euros from 2016 to 2017 compared to an increase of 156 million euros from 2015 to 2016.

Details are as follows:

		Year ended December 31,
		2017		2016		2015
		(millions of euros)
Amortization of intangible assets with a finite useful life:
Industrial patents and intellectual property rights			1,263		1,243		1,268
Concessions, licenses, trademarks and similar rights			396		393		391
Other intangible assets			134		107		129
	(A)		1,793		1,743		1,788
Depreciation of tangible assets owned:
Buildings (civil and industrial)			39		48		38
Plant and equipment			2,286		2,170		2,018
Manufacturing and distribution equipment			16		15		15
Other			159		157		159
	(B)		2,500		2,390		2,230
Depreciation of tangible assets held under finance leases:
Buildings (civil and industrial)			130		125		105
Plant and equipment			21		17		9
Other			29		16		3
	(C)		180		158		117
Total	(A+B+C)		4,473		4,291		4,135

Further details are provided in the Notes “Intangible assets with a finite useful life” and “Tangible assets (owned and under finance leases)”.

For a breakdown of depreciation and amortization by operating segment/geographical area, reference should be made to the Note “Segment Reporting”.

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Gains (Losses) on Disposals of Non-current Assets

12 Months Ended

Dec. 31, 2017

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Gains (Losses) on Disposals of Non-current Assets

NOTE 32—GAINS (LOSSES) ON DISPOSALS OF NON—CURRENT ASSETS

Gains (losses) on disposals of non—current assets amounted to a gain of 11 million euros in 2017, a gain of 14 million euros in 2016 and a gain of 336 million euros in 2015.

Details are as follows:

		Year ended December 31,
		2017		2016		2015
		(millions of euros)
Gains on disposals of non-current assets:
Gains on the retirement/disposal of intangible and tangible assets			15		28		348
Gains on the disposal of investments in subsidiaries			—		—		—
	(A)		15		28		348
Losses on disposals of non-current assets:
Losses on the retirement/disposal of intangible and tangible assets			4		14		12
Losses on the disposals of investments in subsidiaries			—		—		—
	(B)		4		14		12
Total	(A-B)		11		14		336

In 2017, gains on disposals of non-current assets were 11 million euros connected with the ordinary asset renewal process.

In 2016, gains on disposals of non-current assets were 14 million euros and included a gain of 44 million reais (approximately 12 million euros at the 2016 average exchange rate) realized by the Brazil Business Unit from the sale of two further tranches of telecommunications towers to American Tower do Brasil.

In 2015, gains on disposals of non-current assets were 336 million euros, mainly attributable to the gain realized by the Brazil Business Unit of 1,211 million reais (approximately 328 million euros) from the sale of the first three tranches of telecommunications towers to American Tower do Brasil.

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Impairment Reversals (Losses) on Non-Current Assets

12 Months Ended

Dec. 31, 2017

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Impairment Reversals (Losses) on Non-Current Assets

NOTE 33—IMPAIRMENT REVERSALS (LOSSES) ON NON—CURRENT ASSETS

Impairment losses on non-current assets, amounted to 37 million euros in 2017, 3 million euros in 2016 and 244 million euros in 2015.

Details are as follows:

		Year ended December 31,
		2017			2016			2015
		(millions of euros)
Reversals of impairment losses on non-current assets:
on intangible assets			—			—			—
on tangible assets			—			—			—
	(A)		—			—			—
Impairment losses on non-current assets:
on intangible assets			30			—			240
on tangible assets			7			3			4
	(B)		37			3			244
Total	(A-B)		(37	)		(3	)		(244	)

In 2017, impairment losses on non-current assets were 37 million euros, relating primarily to impairment losses of intangible assets.

In 2016, impairment losses on non-current assets amounted to 3 million euros and were related to the redetermination of the value of several minor assets.

In 2015, impairment losses on non-current assets were 244 million euros. In particular, the figure consisted of 240 million euros for the goodwill impairment loss of the Brazil Business Unit and of 4 million euros for other items.

In preparing this Annual Report, the TIM Group carried out an impairment test on the goodwill. The results of that testing, carried out in accordance with the specific procedure adopted by the Group, confirmed the amounts of Goodwill allocated to the Group’s individual Cash Generating Units.

For further details, please see the Note “Goodwill”.

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Other Income (Expenses) from Investments

12 Months Ended

Dec. 31, 2017

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Other Income (Expenses) from Investments

NOTE 34—OTHER INCOME (EXPENSES) FROM INVESTMENTS

Other income (expenses) from investments reflected an expense of 18 million euros in 2017, an income of 7 million euros in 2016 and an income of 10 million euros in 2015.

Details are as follows:

	Year ended December 31,
	2017			2016		2015
	(millions of euros)
Dividends from Other investments		1			7		3
Net gains on disposals of Other investments		—			—		11
Loss and impairment losses on Other investments		(19	)		—		(4	)
Total		(18	)		7		10
of which, included in the supplementary disclosure on financial instruments		1			7		14

In 2017, this item amounted to an expense of 18 million euros and essentially included the allocation to the income statement of the Reserve for exchange differences on translating foreign operations for the investee company Tierra Argentea S.A., the liquidation of which has now been completed.

In 2016, the item showed an income of 7 million euros, including mainly dividends received from Emittenti Titoli S.p.A.

In 2015, the item showed an income of 10 million euros, mainly related to the gain from the sale of the non-controlling interest in Sia S.p.A., which took place on July 10, 2015.

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Finance Income and Finance Expenses

12 Months Ended

Dec. 31, 2017

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Finance Income and Finance Expenses

NOTE 35—FINANCE INCOME AND FINANCE EXPENSES

Finance income

Finance income amounted to 1,808 million euros in 2017, 2,543 million euros in 2016 and 2,760 million euros in 2015.

Details are as follows:

		Year ended December 31,
		2017		2016		2015
		(millions of euros)
Interest income and other finance income:
Income from financial receivables recorded in non-current assets			—		—		—
Income from securities other than investments, recorded in non-current assets			—		—		1
Income from securities other than investments, recorded in current assets			14		16		26
Income other than the above:
Interest income			129		151		214
Exchange gains			782		713		976
Income from fair value hedge derivatives			66		65		99
Reversal of the Reserve for cash flow hedge derivatives to the income statement (interest rate component)			568		649		954
Income from non-hedging derivatives			9		13		15
Miscellaneous finance income			26		37		110
	(A)		1,594		1,644		2,395
Positive fair value adjustments to:
Fair value hedge derivatives			—		50		129
Underlying financial assets and liabilities of fair value hedges derivatives			95		173		10
Non hedging derivatives			119		676		226
	(B)		214		899		365
Reversal of impairment loss on financial assets other than investments	(C)		—		—		—
Total	(A+B+C)		1,808		2,543		2,760
of which, included in the supplementary disclosure on financial instruments			300		987		630

Finance expenses

Finance expenses amounted to 3,303 million euros in 2017, 3,450 million euros in 2016 and 5,281 million euros in 2015.

Details are as follows:

		Year ended December 31,
		2017		2016		2015
		(millions of euros)
Interest expenses and other finance expenses:
Interest expenses and other costs relating to bonds			1,100		1,162		1,621
Interest expenses to banks			113		117		128
Interest expenses to others			250		246		264
			1,463		1,525		2,013
Commissions			91		95		140
Exchange losses			759		467		1,158
Charges from fair value hedge derivatives			—		1		12
Reversal of the Reserve for cash flow hedge derivatives to the income statement (interest rate component)			489		548		820
Charges from non-hedging derivatives			22		64		75
Miscellaneous finance expenses			256		221		360
	(A)		3,080		2,921		4,578
Negative fair value adjustments to:
Fair value hedge derivatives			87		178		33
Underlying financial assets and liabilities of fair value hedges derivatives			—		45		117
Non hedging derivatives			136		306		553
	(B)		223		529		703
Impairment losses on financial assets other than investments	(C)		—		—		—
Total	(A+B+C)		3,303		3,450		5,281
of which, included in the supplementary disclosure on financial instruments			1,606		1,903		2,788

For greater clarity of presentation, the net effects relating to derivative financial instruments are summarized in the following table:

		Year ended December 31,
		2017			2016			2015
		(millions of euros)
NET EXCHANGE GAINS AND LOSSES
Exchange gains			782			713			976
Exchange losses			(759	)		(467	)		(1,158	)
			23			246			(182	)
NET RESULT FROM DERIVATIVES
Income from fair value hedge derivatives			66			65			99
Charges from fair value hedge derivatives			—			(1	)		(12	)
Net result from fair value hedge derivatives	(A)		66			64			87
Positive effect of the Reversal of the Reserve of cash flow hedge derivatives to the income statement for the interest rate component			568			649			954
Negative effect of the Reversal of the Reserve of cash flow hedge derivatives to the income statement for the interest rate component			(489	)		(548	)		(820	)
Net effect of the Reversal of the Reserve of cash flow hedge derivatives to the income statement for the interest rate component	(B)		79			101			134
Income from non-hedging derivatives			9			13			15
Charges from non-hedging derivatives			(22	)		(64	)		(75	)
Net result from non-hedging derivatives	(C)		(13	)		(51	)		(60	)
Net result from derivatives	(A+B+C)		132			114			161
Positive fair value adjustment to fair value hedge derivatives			—			50			129
Negative fair value adjustment to underlying financial assets and liabilities of fair value hedge derivatives			—			(45	)		(117	)
Net fair value adjustments	(D)		—			5			12
Positive fair value adjustments to underlying financial assets and liabilities of fair value hedge derivatives			95			173			10
Negative fair value adjustments to fair value hedge derivatives			(87	)		(178	)		(33	)
Net fair value adjustments	(E)		8			(5	)		(23	)
Net fair value adjustment to fair value hedge derivatives and underlying	(D+E)		8			—			(11	)
NET FAIR VALUE ADJUSTMENTS TO NON-HEDGING DERIVATIVES
Positive fair value adjustments to non-hedging derivatives	(F)		119			676			226
Negative fair value adjustments to non-hedging derivatives	(G)		(136	)		(306	)		(553	)
Net fair value adjustments to non-hedging derivatives	(F+G)		(17	)		370			(327	)

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Profit (Loss) for the Year

12 Months Ended

Dec. 31, 2017

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Profit (Loss) for the Year

NOTE 36—PROFIT (LOSS) FOR THE YEAR

Profits (losses) for the years ended December 31, 2017, 2016 and 2015 are summarized as follows:

	Year ended December 31,
	2017		2016			2015
	(millions of euros)
Profit (loss) for the year		1,287		1,966			661
Attributable to:
Owners of the Parent
Profit (loss) from continuing operations		1,121		1,811			(159	)
Profit (loss) from Discontinued operations/Non-current assets held for sale		—		(3	)		89
Profit (loss) for the year attributable to owners of the Parent		1,121		1,808			(70	)
Non-controlling interests
Profit (loss) from continuing operations		166		108			209
Profit (loss) from Discontinued operations/Non-current assets held for sale		—		50			522
Profit (loss) for the year attributable to Non-Controlling interests		166		158			731

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Earnings Per Share

12 Months Ended

Dec. 31, 2017

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Earnings Per Share

NOTE 37—EARNINGS PER SHARE

		Year ended December 31,
		2017			2016			2015
Basic Earnings Per Share
Profit (loss) for the year attributable to owners of the Parent			1,121			1,808			(70	)
Less: additional dividends for the savings shares (0.011 per share and up to capacity)			(66	)		(66	)		—
	(millions of euros)		1,055			1,742			(70	)
Average number of Ordinary and Savings Shares	(millions)		21,067			21,067			20,916
Basic earnings per share— Ordinary Shares			0.05			0.08			—
Plus: additional dividends per savings Share			0.01			0.01			—
Basic earnings per share— Savings Shares	(euro)		0.06			0.09			—
Basic Earnings Per Share From continuing Operations
Profit (loss) from continuing operations attributable to owners of the Parent			1,121			1,811			(159	)
Less: additional dividends for the Savings Shares			(66	)		(66	)		—
	(millions of euros)		1,055			1,745			(159	)
Average number of Ordinary and Savings Shares	(millions)		21,067			21,067			20,916
Basic earnings (loss) per share from continuing operations— Ordinary Shares			0.05			0.08			(0.01	)
Plus: additional dividends per savings Share			0.01			0.01			—
Basic earnings (loss) per share from continuing operations— Savings Shares	(Euro)		0.06			0.09			(0.01	)
Basic Earnings Per Share From Discontinued operations/Non-current assets held for sale
Profit (loss) from Discontinued operations/Non-current assets held for sale	(millions of euros)		—			47			611
Average number of Ordinary and Savings Shares	(millions)		21,067			21,067			20,916
Basic earnings (loss) per share from Discontinued operations/ Non-current assets held for sale—Ordinary Shares	(euro)		—			—			0.03
Basic earnings (loss) per share from Discontinued operations/ Non-current assets held for sale—Savings Shares	(euro)		—			—			0.03
		Year ended December 31,
		2017			2016			2015
Average number of Ordinary Shares			15,039,368,195			15,039,128,128			14,889,773,009
Average number of Savings Shares			6,027,791,699			6,027,791,699			6,026,677,674
Total			21,067,159,894			21,066,919,827			20,916,450,683

		Year ended December 31,
		2017			2016			2015
Diluted Earnings Per Share
Profit (loss) for the year attributable to Owners of the Parent			1,121			1,808			(70	)
Dilution effect of stock option plans and convertible bonds (*)			32			43			—
Less: additional dividends for the savings shares (0.011 per share and up to capacity)			(66	)		(66	)		—
	(millions of euros)		1,087			1,785			(70	)
Average number of Ordinary and Savings Shares	(millions)		22,167			22,194			20,916
Diluted earnings per share—Ordinary Shares			0.05			0.08			—
Plus: additional dividends per savings Share			0.01			0.01			—
Diluted earnings per share—Savings Shares	(euro)		0.06			0.09			—
Diluted Earnings Per Share From continuing Operations
Profit (loss) from continuing operations attributable to owners of the Parent			1,121			1,811			(159	)
Dilution effect of stock option plans and convertible bonds (*)			32			43			—
Less: additional dividends for the Savings Shares			(66	)		(66	)		—
	(millions of euros)		1,087			1,788			(159	)
Average number of Ordinary and Savings Shares	(millions)		22,167			22,194			20,916
Diluted earnings (loss) per share from continuing operations—Ordinary Shares			0.05			0.08			(0.01	)
Plus: additional dividends per savings Share			0.01			0.01			—
Diluted earnings (loss) per share from continuing operations—Savings Shares	(euro)		0.06			0.09			(0.01	)
Diluted Earnings Per Share From Discontinued operations/Non-current assets held for sale
Profit (loss) from Discontinued operations/Non-current assets held for sale	(millions of euros)		—			47			611
Dilution effect of stock option plans and convertible bonds
Average number of Ordinary and Savings Shares	(millions)		22,167			22,194			20,916
Diluted earnings per share from Discontinued operations/ Non-current assets held for sale—Ordinary Shares	(euro)		—			—			0.03
Diluted earnings per share from Discontinued operations/ Non-current assets held for sale—Savings Shares	(euro)		—			—			0.03
		Year ended December 31,
		2017			2016			2015
Average number of Ordinary Shares(*)			16,139,681,521			16,166,142,282			14,889,773,009
Average number of Savings Shares			6,027,791,699			6,027,791,699			6,026,677,674
Total			22,167,473,220			22,193,933,981			20,916,450,683

(*) The average number of ordinary shares also includes the potential ordinary shares relating to the equity compensation plans of employees for which the (market and non-market) performance conditions have been met, in addition to the theoretical number of shares that are issuable as a result of the conversion of the unsecured equity-linked convertible bond. Consequently, the “Net profit (loss) for the year attributable to Owners of the Parent” and the “Profit (loss) from continuing operations attributable to Owners of the Parent” have also been adjusted to exclude the effects, net of tax, related to the above-mentioned plans and to the convertible bond (+32 million euros in 2017 and +43 million euros in 2016).

Future potential changes in share capital

The table below shows future potential changes in share capital, based on: the issuance of the convertible bond by TIM S.p.A. in March 2015; the authorizations to increase the share capital in place at December 31, 2017; and the options and rights granted under equity compensation plans, still exercisable at that date:

	Number of maximum shares issuable		Share capital (thousands of euros)		Additional paid-in capital (thousands of euros)		Subscription price per shares (euros)
Additional capital increases not yet approved (ordinary shares)
2014-2016 Stock Option Plan		133,042		73		80		1.15
		343,069		189		158		1.01
		893,617		492		393		0.99
		13,555,651		7,455		5,287		0.94
Total additional capital increases not yet approved (ordinary shares)		14,925,379		8,209		5,918
Capital increases already approved (ordinary shares)
2015 Convertible Bond (ordinary shares)(*)		1,082,485,386		2,000,000		n.a.		n.a.
Convertible bonds				2,000,000
Total				2,008,209

(*) The number of shares potentially issuable shown may be subject to adjustments.

For further details, please see Note “Financial liabilities (non-current and current)” and Note “Equity compensation plans”.

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Segment Reporting

12 Months Ended

Dec. 31, 2017

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Segment Reporting

NOTE 38—SEGMENT REPORTING

a) Reporting by operating segment

Segment reporting is based on the following operating segments:

· Domestic;

· Brazil;

· Media (only with reference to 2015); and

· Other Operations.

The Media Business Unit was included into the Domestic Business Unit as of January 1, 2016.

SEPARATE CONSOLIDATED INCOME STATEMENTS BY OPERATING SEGMENT

	Domestic									Brazil									Media					Other operations									Adjustments and eliminations									Consolidated Total
	2017			2016			2015			2017			2016			2015			2017	2016	2015			2017			2016			2015			2017			2016			2015			2017			2016			2015
	(millions of euros)
Third-party revenues		15,328			14,971			14,960			4,500			4,044			4,634					82			—			10			43			—			—			—			19,828			19,025			19,719
Intragroup revenues		26			35			41			2			3			3					—			—			1			6			(28	)		(39	)		(50	)		—			—			—
Revenues by operating segment		15,354			15,006			15,001			4,502			4,047			4,637					82			—			11			49			(28	)		(39	)		(50	)		19,828			19,025			19,719
Other income		471			259			258			52			51			21					4			—			1			4			—			—			—			523			311			287
Total operating revenues and other income		15,825			15,265			15,259			4,554			4,098			4,658					86			—			12			53			(28	)		(39	)		(50	)		20,351			19,336			20,006
Acquisition of goods and services		(6,235	)		(5,785	)		(6,046	)		(2,168	)		(2,028	)		(2,443	)				(33	)		(4	)		(9	)		(48	)		19			29			38			(8,388	)		(7,793	)		(8,532	)
Employee benefits expenses		(3,266	)		(2,759	)		(3,206	)		(353	)		(336	)		(349	)				(4	)		(7	)		(11	)		(30	)		—			—			—			(3,626	)		(3,106	)		(3,589	)
of which: accruals to employee severance indemnities		(6	)		(1	)		(1	)		—			—			—					—			—			—			—			—			—			—			(6	)		(1	)		(1	)
Other operating expenses		(704	)		(574	)		(999	)		(500	)		(505	)		(470	)				(12	)		(5	)		(2	)		(11	)		1			(2	)		1			(1,208	)		(1,083	)		(1,491	)
of which: write-downs and expenses in connection with credit management and provision charges		(468	)		(317	)		(506	)		(160	)		(162	)		(149	)				(12	)		—			—			(8	)		—			—			—			(628	)		(479	)		(675	)
Change in inventories		41			16			3			(6	)		1			(33	)				—			—			(8	)		(15	)		—			—			1			35			9			(44	)
Internally generated assets		510			535			556			108			95			88					—			—			—						8			9			12			626			639			656
Depreciation and amortization		(3,360	)		(3,310	)		(3,205	)		(1,114	)		(980	)		(909	)				(23	)		—			—			—			1			(1	)		2			(4,473	)		(4,291	)		(4,135	)
Gains (losses) on disposals of non-current assets		(2	)		(9	)		—			14			23			336					—			—			—			—			(1	)		—			—			11			14			336
Impairment reversals (losses) on non-current assets		(37	)		(3	)		(3	)		—			—			(240	)				—			—			—			(1	)		—			—			—			(37	)		(3	)		(244	)
Operating profit (loss)		2,772			3,376			2,359			535			368			638					14			(16	)		(18	)		(52	)		—			(4	)		4			3,291			3,722			2,963
Share of profits (losses) of associates and joint ventures accounted for using the equity method		(1	)		(23	)		1			—			—			—					—			—			—			—			—			—			—			(1	)		(23	)		1
Other income (expenses) from investments																																											(18	)		7			10
Finance income																																											1,808			2,543			2,760
Finance expenses																																											(3,303	)		(3,450	)		(5,281	)
Profit (loss) before tax from continuing operations																																											1,777			2,799			453
Income tax expense																																											(490	)		(880	)		(403	)
Profit (loss) from continuing operations																																											1,287			1,919			50
Profit (loss) from Discontinued operations/Non-current assets held for sale																																											—			47			611
Profit (loss) for the year																																											1,287			1,966			661
Attributable to:
Owners of the Parent																																											1,121			1,808			(70	)
Non-controlling interests																																											166			158			731

REVENUES BY OPERATING SEGMENT

	Domestic								Brazil						Media				Other operations						Adjustments and eliminations									Consolidated Total
	2017		2016			2015			2017		2016		2015		2017	2016	2015		2017		2016		2015		2017			2016			2015			2017		2016			2015
	(millions of euros)
Revenues from equipment sales—third party		1,350		1,136			956			210		232		475				—		—		10		43		—			—			—			1,560		1,378			1,474
Revenues from equipment sales—intragroup		—		—			—			1		—		—				—		—		1		5		(1	)		(1	)		(5	)		—		—			—
Total revenues from equipment sales		1,350		1,136			956			211		232		475				—		—		11		48		(1	)		(1	)		(5	)		1,560		1,378			1,474
Revenues from services—third party		13,974		13,843			14,017			4,290		3,812		4,159				82		—		—		—		—			—			—			18,264		17,655			18,258
Revenues from services—intragroup		26		35			41			1		3		3				—		—		—		1		(27	)		(38	)		(45	)		—		—			—
Total revenues from services		14,000		13,878			14,058			4,291		3,815		4,162				82		—		—		1		(27	)		(38	)		(45	)		18,264		17,655			18,258
Revenues on construction contracts—third party		4		(8	)		(13	)		—		—		—				—		—		—		—		—			—			—			4		(8	)		(13	)
Revenues on construction contracts—intragroup		—		—			—			—		—		—				—		—		—		—		—			—			—			—		—			—
Total revenues on construction contracts		4		(8	)		(13	)		—		—		—				—		—		—		—		—			—			—			4		(8	)		(13	)
Total third-party revenues		15,328		14,971			14,960			4,500		4,044		4,634				82		—		10		43		—			—			—			19,828		19,025			19,719
Total intragroup revenues		26		35			41			2		3		3				—		—		1		6		(28	)		(39	)		(50	)		—		—			—
Total revenues by operating segment		15,354		15,006			15,001			4,502		4,047		4,637				82		—		11		49		(28	)		(39	)		(50	)		19,828		19,025			19,719

PURCHASE OF INTANGIBLE AND TANGIBLE ASSETS BY OPERATING SEGMENT

	Domestic						Brazil						Media				Other operations						Adjustments and eliminations						Consolidated Total
	2017		2016		2015		2017		2016		2015		2017	2016	2015		2017		2016		2015		2017		2016		2015		2017		2016		2015
	(millions of euros)
Purchase of intangible assets		1,763		1,113		1,454		529		528		505				—		—		—		—		—		—		—		2,292		1,641		1,959
Purchase of tangible assets		2,842		2,792		3,632		635		675		1,121				8		—		—		—		—		—		—		3,477		3,467		4,761
Purchase of intangible and tangible assets		4,605		3,905		5,086		1,164		1,203		1,626				8		—		—		—		—		—		—		5,769		5,108		6,720
of which capital expenditures		4,551		3,709		3,900		1,150		1,167		1,289				8		—		—		—		—		—		—		5,701		4,876		5,197
of which change in finance leasing contracts		54		196		1,186		14		36		337				—		—		—		—		—		—		—		68		232		1,523

HEADCOUNT BY OPERATING SEGMENT

Domestic

Brazil

Other operations

Consolidated Total

As of December 31, 2017

As of December 31, 2016

As of December 31, 2017

As of December 31, 2016

As of December 31, 2017

As of December 31, 2016

As of December 31, 2017

As of December 31, 2016

(number of employees)

Headcount

49,851

51,280

9,508

9,849

70

100

59,429

61,229

ASSETS AND LIABILITIES BY OPERATING SEGMENT

	Domestic				Brazil				Other operations					Adjustments and eliminations						Consolidated Total
	As of December 31, 2017		As of December 31, 2016		As of December 31, 2017		As of December 31, 2016		As of December 31, 2017			As of December 31, 2016		As of December 31, 2017			As of December 31, 2016			As of December 31, 2017		As of December 31, 2016
	(millions of euros)
Non-current operating assets		48,850		47,428		6,769		7,711		3			5		1			1			55,623		55,145
Current operating assets		4,363		4,472		898		1,209		(2	)		16		(10	)		(1	)		5,249		5,696
Total operating assets		53,213		51,900		7,667		8,920		1			21		(9	)		—			60,872		60,841
Investments accounted for using the equity method		17		18		—		—		—			—		—			—			17		18
Discontinued operations /Non-current assets held for sale																					—		—
Unallocated assets																					7,894		9,587
Total Assets																					68,783		70,446
Total operating liabilities		9,829		8,968		1,855		2,397		58			57		(26	)		(16	)		11,716		11,406
Liabilities directly associated with Discontinued operations/Non-current assets held for sale																					—		—
Unallocated liabilities																					33,284		35,487
Equity																					23,783		23,553
Total Equity and liabilities																					68,783		70,446

b) Reporting by geographical area

		Revenues												Non-current operating assets
		Breakdown by location of operations						Breakdown by location of customers						Breakdown by location of operations
		2017		2016		2015		2017		2016		2015		As of December 31, 2017		As of December 31, 2016
		(millions of euros)
Italy	(A)		15,015		14,635		14,743		14,064		13,657		13,772		48,591		46,948
Outside Italy	(B)		4,813		4,390		4,976		5,764		5,368		5,947		7,032		8,197
Total	(A+B)		19,828		19,025		19,719		19,828		19,025		19,719		55,623		55,145

c) Information about major customers

None of the TIM Group’s customers exceeds 10% of consolidated revenues.

XML

Related Party Transactions and Direction and Coordination Activity

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Related Party Transactions and Direction and Coordination Activity

NOTE 39—RELATED PARTY TRANSACTIONS AND DIRECTION AND COORDINATION ACTIVITY

The following tables show figures relating to related party transactions and the impact of these transactions on the separate consolidated income statements, consolidated statements of financial position and consolidated statements of cash flows.

Related party transactions, when not dictated by specific laws, were conducted at arm’s length. The transactions were carried out in accordance with the internal procedure that contains the rules aimed at ensuring the transparency and fairness of related party transactions, in accordance with Consob Regulation 17221/2010.

Starting on May 3, 2017, the Board of Directors of TIM amended the Procedure for the management of transactions with related parties, initially extending its scope on a voluntary basis and then adding the treatment of Vivendi as its Controlling Entity, from June 1, 2017. In addition, on September 13, 2017, Consob communicated that “it considered that Vivendi exercises de facto control over TIM pursuant to Article 2359 of the Italian Civil Code and Article 93 of the Consolidated Law on Finance, and pursuant to the related party regulations”. Although it intended to challenge the decision, the Board of Directors ensured full compliance with the rules resulting from this classification, also amending the aforementioned Procedure as a consequence (on September 28, 2017).

In the meantime, on July 27, 2017, the Board of Directors also acknowledged the start of direction and coordination by Vivendi. On August 4, 2017, in response to a request from Consob, the Company specified that this acknowledgment had taken place, following the statements made to the Board of Directors by the Executive Chairman, also in his capacity as Chief Executive Officer of the Vivendi Group, in the light of two specific circumstances:

· on the one hand, the strengthening of the Company’s management team with the arrival in TIM of a senior executive from the Vivendi group, aimed, among other things, at achieving greater coordination between the industrial and commercial activities of the various companies, as part of the strategic plan; and

· on the other hand, the JV between TIM and Canal+, as another equally indicative sign of the desire to establish a form of coordination between the two groups in the multimedia sector, as part of the strategic plan.

In October 20, 2017, the Board of Directors of TIM examined and approved the binding term sheet by majority vote for the creation of a joint venture with Canal+. The term sheet expired, however, on January 18, 2018.

Lastly:

· up to May 4, 2017, the shareholders of the company Telco (the Generali, Intesa Sanpaolo, Mediobanca, and Telefonica groups), were also considered related parties of TIM, based on the provision of TIM’s procedure for the management of transactions with related parties according to which it applies “also to the participants in significant shareholder agreements according to Article 122 of the Consolidated Law on Finance, which govern the candidacy to the position of Director of the Company, where the majority of the Directors nominated have been drawn from the list submitted”. The members of the Board of Directors of TIM in office up to May 4, 2017 had in fact been drawn from the list originally submitted by the shareholder Telco. With the reappointment of the Board of Directors, this circumstance no longer applied and the scope of related parties through Directors was therefore amended;

· the investment held in the Sofora—Telecom Argentina group, classified under Discontinued operations/Non-current assets held for sale starting from the consolidated financial statements at December 31, 2013, was sold on March 8, 2016.

The effects on the individual line items of the Group’s separate consolidated income statements for the years 2017, 2016 and 2015 are as follows:

Separate consolidated income statement line items 2017

			Related parties
	Total (a)		Controlling Entity		Associates, subsidiaries of associates and joint ventures		Other related parties (*)		Pension funds		Key managers		Total related parties (b)		% on line item (b/a)
	(millions of euros)
Revenues		19,828		—		3		115						118		0.6
Other income		523		—		4		4						8		1.5
Acquisition of goods and services		8,388		—		22		170						192		2.3
Employee benefits expenses		3,626		—		—		1		74		37		112		3.1
Finance income		1,808		—		—		45						45		2.5
Finance expenses		3,303		—		11		38						49		1.5

(*) Vivendi group (excluding Vivendi) and Companies belonging to the group that it belongs to; other related parties both through directors, statutory auditors and key managers (or executive officers under US rules) and as participants in shareholders’ agreements pursuant to Article 122 of the Consolidated Law on Finance. According to Italian Rules, statutory auditors are considered related parties.

Separated consolidated income statement line items 2016

			Related parties
	Total (a)		Associates, subsidiaries of associates and joint ventures			Other related parties (*)		Pension funds		Key managers		Total related parties		Transactions of Discontinued Operations			Total related parties net of Discontinued Operations (b)		% on line item (b/a)
	(millions of euros)
Revenues		19,025		10			355						365		(23	)		342		1.8
Other income		311					1						1					1		0.3
Acquisition of goods and services		7,793		21			231						252		(14	)		238		3.1
Employee benefits expenses		3,106					2		83		36		121					121		3.9
Other operating expenses		1,083					1						1					1		0.1
Finance income		2,543					108						108					108		4.2
Finance expenses		3,450					114						114					114		3.3
Profit (loss) from Discontinued operations/Non-current assets held for sale		47		(1	)		10						9

(*) Other related parties both through directors, statutory auditors and key managers (or executive officers under US rules) and as participants in shareholders’ agreements pursuant to Article 122 of the Consolidated Law on Finance. According to Italian Rules, statutory auditors are considered related parties.

Separate consolidated income statement line items 2015

			Related parties
	Total (a)		Associates, subsidiaries of associates and joint ventures			Other related parties (*)		Pension funds		Key managers		Total related parties		Transactions of Discontinued Operations			Total related parties net of Discontinued Operations (b)		% on line item (b/a)
	(millions of euros)
Revenues		19,719		6			605						611		(187	)		424		2.2
Other income		287					1						1					1		0.3
Acquisition of goods and services		8,532		39			323						362		(111	)		251		2.9
Employee benefits expenses		3,589					15		86		14		115		(12	)		103		2.9
Other operating expenses		1,491					1						1					1		0.1
Finance income		2,760					123						123					123		4.5
Finance expenses		5,281		5			92						97					97		1.8
Profit (loss) from Discontinued operations/Non-current assets held for sale		611		(13	)		77						64

(*) Other related parties both through directors, statutory auditors and key managers (or executive officers under US rules) and as participants in shareholders’ agreements pursuant to Article 122 of the Consolidated Law on Finance. According to Italian Rules, statutory auditors are considered related parties.

The effects on the individual line items of the consolidated statements of financial position at December 31, 2017 and at December 31, 2016 are as follows:

Consolidated statement of financial position line items at December 31, 2017

				Related parties
	Total (a)			Controlling Entity	Associates, subsidiaries of associates and joint ventures		Other related parties (*)			Pension funds		Total related parties (b)			% on line item (b/a)
	(millions of euros)
Non-current financial assets		(1,768	)										—
Securities other than investments (current assets)		(993	)					(15	)				(15	)		1.5
Financial receivables and other current financial assets		(437	)					(38	)				(38	)		8.7
Cash and cash equivalents		(3,575	)										—
Current financial assets		(5,005	)					(53	)				(53	)		1.1
Non-current financial liabilities		28,108						100					100			0.4
Current financial liabilities		4,756						163					163			3.4
Trade and miscellaneous receivables and other current assets		4,959				3		33					36			0.7
Trade and miscellaneous payables and other current liabilities		7,520				3		33			24		60			0.8

(*) Vivendi group and Companies belonging to the group that it belongs to; other related parties both through directors, statutory auditors and key managers (or executive officers under US rules) and as participants in shareholders’ agreements pursuant to Article 122 of the Consolidated Law on Finance. According to Italian Rules, statutory auditors are considered related parties.

Consolidated statement of financial position line items at December 31, 2016

				Related parties
	Total (a)			Associates, subsidiaries of associates and joint ventures			Other related parties (*)			Pension funds		Total related parties			Transactions of Discontinued Operations	Total related parties net of Discontinued Operations (b)			% on line item (b/a)
	(millions of euros)
Non-current financial assets		(2,698	)		(12	)		(520	)				(532	)			(532	)		19.7
Securities other than investments (current assets)		(1,519	)					(110	)				(110	)			(110	)		7.2
Financial receivables and other current financial assets		(389	)					(22	)				(22	)			(22	)		5.7
Cash and cash equivalents		(3,964	)					(621	)				(621	)			(621	)		15.7
Current financial assets		(5,872	)					(753	)				(753	)			(753	)		12.8
Non-current financial liabilities		30,469						912					912				912			3.0
Current financial liabilities		4,056						133					133				133			3.3
Trade and miscellaneous receivables and other current assets		5,426			9			127					136				136			2.5
Miscellaneous payables and other non-current liabilities		1,607						2					2				2			0.1
Trade and miscellaneous payables and other current liabilities		7,646			37			200			26		263				263			3.4

(*) Other related parties both through directors, statutory auditors and key managers (or executive officers under US rules) and as participants in shareholders’ agreements pursuant to Article 122 of the Consolidated Law on Finance. According to Italian Rules, statutory auditors are considered related parties.

The effects on the relevant line items of the consolidated statements of cash flows for the years 2017, 2016 and 2015 are as follows:

Consolidated statement of cash flows line items 2017

			Related parties
	Total (a)		Controlling Entity	Associates, subsidiaries of associates and joint ventures		Other related parties (*)	Pension funds	Total related parties (b)		% on line item (b/a)
	(millions of euros)
Purchase of intangible and tangible assets on an accrual basis		5,769			135				135		2.3

(*) Vivendi group and Companies belonging to the group that it belongs to; other related parties both through directors, statutory auditors and key managers (or executive officers under US rules) and as participants in shareholders’ agreements pursuant to Article 122 of the Consolidated Law on Finance. According to Italian Rules, statutory auditors are considered related parties.

Consolidated statement of cash flows line items 2016

Related parties

Total (a)

Associates, subsidiaries of associates and joint ventures

Other related parties (*)

Pension funds

Total related parties

Transactions of Discontinued Operations

Total related parties net of Discontinued Operations (b)

% on line item (b/a)

(millions of euros)

Purchase of intangible and tangible assets on an accrual basis

5,108

159

159

159

3.1

(*) Other related parties both through directors, statutory auditors and key managers (or executive officers under US rules) and as participants in shareholders’ agreements pursuant to Article 122 of the Consolidated Law on Finance. According to Italian Rules, statutory auditors are considered related parties.

Consolidated statement of cash flows line items 2015

				Related parties
	Total (a)			Associates, subsidiaries of associates and joint ventures		Other related parties (*)			Pension funds	Total related parties			Transactions of Discontinued Operations			Total related parties net of Discontinued Operations (b)		% on line item (b/a)
	(millions of euros)
Purchase of intangible and tangible assets on an accrual basis		6,720			160		22				182			(2	)		180		2.7
Cash flows from (used in) Discontinued operations/Non-current assets held for sale		(19	)				(2	)			(2	)

(*) Other related parties both through directors, statutory auditors and key managers (or executive officers under US rules) and as participants in shareholders’ agreements pursuant to Article 122 of the Consolidated Law on Finance. According to Italian Rules, statutory auditors are considered related parties.

TRANSACTIONS WITH ASSOCIATES, SUBSIDIARIES OF ASSOCIATES AND JOINT VENTURES

During 2017, Italtel S.p.A. was the subject of a recapitalization operation in which the TIM Group did not participate and which involved the simultaneous sale of the financial instruments held. The transaction was completed on December 14, 2017, therefore, starting from that date, the Italtel Group is no longer a related party of the TIM Group.

Separate consolidated income statement line items

	2017		2016		2015		Type of contract
	(millions of euros)
Revenues
Asscom S.r.l.		1		1		—	Insurance brokerage
Italtel group		1		7		1	Provision of equipment rental, fixed and mobile telephone and outsourced communication services
NordCom S.p.A.		1		1		1	Fixed and mobile voice services, data network connections and outsourced, I.C.T. products and services
Teleleasing S.p.A. (in liquidation)		—		—		3	Sale of equipment and maintenance services
Other minor companies		—		1		1
Total revenues		3		10		6
Other income		4		—		—	Contributionsgoverned by partnership agreements and penalties with respect to the Italtel group.
Acquisition of goods and services
Italtel group		17		16		37	Supply and maintenance of switching equipment, software development and platforms upgrading, and customized products and services, as part of TIM offerings to the Italtel group customers, and extension of professional services for the new Multimedia Video Data Center for the provision of the TIM Vision service
NordCom S.p.A.		—		1		1	Supply and development of IT solutions, provision of customized services as part of TIM offerings to end customers, and rental expense for base transceiver station housing
Teleleasing S.p.A. (in liquidation)		—		—		1	Purchase of goods assigned under leasing arrangements with TIM customers
W.A.Y. S.r.l.		4		4		—	Supply and installation of geolocation equipment and provision of related technical support services within the TIM customer offering
Other minor companies		1		—		—
Totalacquisition of goods and services		22		21		39
Financeexpenses		11		—		5	Write-downof the financial receivable due from Alfiere. Interest expenses for equipment lease and finance leases with Teleleasing S.p.A.

Consolidated statement of financial position line items

	As of December 31, 2017		As of December 31, 2016		Type of contract
	(millions of euros)
Non-current financial assets		—		12	Shareholder loans to Alfiere S.p.A
Trade and miscellaneous receivables and other current assets
Alfiere S.p.A.		1		—	Contracts for project management, administration, corporate and compliance services, and sundry chargebacks.
Italtel group		—		6	Provision of equipment rental, fixed and mobile telephone and outsourced communication services
W.A.Y. S.r.l.		1		1	Supply of fixed-line telephony, ICT and mobile services
Other minor companies		1		2
Total trade and miscellaneous receivables and other current assets		3		9
Trade and miscellaneous payables and other current liabilities
Italtel group		—		33	Supply transactions connected with investment and operations activities
Movenda S.p.A.		1		1	SIM-card supply and certification and functional development of IT platforms.
NordCom S.p.A.		—		1	Supply and development of IT solutions, provision of customized services as part of TIM offerings to end customers, and rental expense for base transceiver station housing
W.A.Y. S.r.l.		1		2	Supply and installation of geolocation equipment and related technical support services within the TIM customer offering
Other minor companies		1		—
Total trade and miscellaneous payables and other current liabilities		3		37

Consolidated statement of cash flows line items

	2017		2016		2015		Type of contract
	(millions of euros)
Purchase of intangible and tangible assets on an accrual basis
Italtel group		132		157		158	Purchases of telecommunications equipment
Movenda S.p.A.		2		2		1	Information technology services and licenses for Mobile Connect Cardlets
Other minor companies		1		—		1
Total purchase of intangible and tangible assets on an accrual basis		135		159		160

The shareholder loan to the joint venture Alfiere S.p.A. in place at December 31, 2016 (12 million euros) was increased by 5 million euros in 2017 and subsequently used to cover losses for 6 million euros. The remaining amount, of 11 million euros, was fully written down.

At December 31, 2017, TIM S.p.A. had issued guarantees in favor of Alfiere S.p.A. for 1 million euros.

TRANSACTIONS WITH OTHER RELATED PARTIES (Both through directors, statutory auditors and key managers—or executive officers under US rules—and as participants in shareholders’ agreements pursuant to Article 122 of the Consolidated Law on Finance. According to Italian Rules, statutory auditors are considered related parties).

Details are provided below of the transactions with:

· Companies (and related groups) formerly shareholders of Telco S.p.A. (in short “Former Telco Companies”) namely: the Generali group, the Intesa Sanpaolo group and the Telefonica group.—Up to May 4, 2017;

· Related companies through Directors whose term of office ended on May 4, 2017;

· Vivendi Group and the companies of the group it belongs to (as a result of the resolutions of the Board of Directors of Tim S.p.A. of May 3 and June 1, 2017);

· Related companies through Directors appointed on May 4, 2017.

The Mediobanca group, already a related party as it is a shareholder of Telco, is currently considered to be a related party through the Vivendi group.

The most significant amounts are summarized as follows:

Separate consolidated income statement line items

	2017		2016		2015			Type of contract
	(millions of euros)
Revenues
Generali group		12		47		109		Supply of telephone and data transmission services, peripheral data networks, connections, storage and telecommunications products and services
Intesa Sanpaolo group		31		64		68		Telephone services, MPLS data and international network, ICT services and Microsoft licenses, Internet connectivity and high-speed connections
Mediobanca group		4		7		6		Telephone services, sale of equipment, outsourced data network services, Internet accesses and software licenses.
RCS Media Group		—		2		1		Fixed-line telephony service
Telefonica group		67		235		421		Interconnection services, roaming, broadband access fees, supply of “IRU” transmission capacity and software
Other minor companies		1		—		—
Total revenues		115		355		605
Total other income		4		1		1		Generali group damage compensation
Acquisition of goods and services
CartaSi group		—		—		5		Commissions on collections and top-up services for prepaid mobile users.
Havas group		91		—		—		Purchase of media space on behalf of the TIM Group and, to a lesser extent, study and implementation of advertising campaigns
Generali group		7		21		25		Insurance premiums and property leases
Intesa Sanpaolo group		5		11		11		Factoring fees, fees for smart card top-ups/activation and commissions for payment of telephone bills by direct debit and collections via credit cards
Mediobanca group		1		1		1		Credit recovery activities
RCS Media Group		—		1		—		Provision of content and digital publishing services and fees for telephone top-up services
Telefonica group		57		188		279		Interconnection and roaming services, site sharing, co-billing agreements, broadband line sharing and unbundling
Vivendi group		9		8		1		Purchase of musical and television digital content (TIMmusic and TIMvision) and supply of D&P cloud-based games (TIMgames).
Other minor companies				1		1
Total acquisition of goods and services		170		231		323
Employee benefits expenses		1		2		15		Generali group insurance related to the work of personnel
Other operating expenses		—		1		1		Expenses for penalties and contractual breaches towards the Intesa Sanpaolo group
Other income (expenses) from investments		—		—		(4	)	Loss related to the sale of Teleleasing S.p.A. to the Mediobanca group
Finance income
Intesa Sanpaolo group		27		83		96		Bank accounts, deposits and hedging derivatives
Mediobanca group		15		18		18		Bank accounts, deposits and hedging derivatives
Telefonica group		3		7		9		Finance leases
Total finance income		45		108		123
Finance expenses
Intesa Sanpaolo group		23		87		68		Term Loan Facility, Revolving Credit Facility, hedging derivatives, loans and bank accounts.
Mediobanca group		15		26		24		Term Loan Facility, Revolving Credit Facility and hedging derivatives
Telefonica group		—		1		—		Loss on sale of securities held in portfolio
Total finance expenses		38		114		92

Consolidated statement of financial position line items

	As of December 31, 2017		As of December 31, 2016		Type of contract
	(millions of euros)
Non-current financial assets
Mediobancagroup		—		80	Hedging derivatives
FormerTelco Companies		—		440	Hedging derivatives, Finance lease
Total Non-current financial assets		—		520
Securities other than investments (current assets)
Mediobancagroup		15		81	Bonds
FormerTelco Companies		—		24	Bonds
Vivendigroup		—		5	Bonds
Total securities other than investments (current assets)		15		110
Financial receivables and other current financial assets
MediobancaGroup		38		1	Hedging derivatives
FormerTelco Companies		—		21	Hedging derivatives, Finance lease
Total financial receivables and other current financial assets		38		22	Hedging derivatives, loans, financing and finance lease
Cash and cash equivalents		—		621	Bank accounts and deposits.
Non-current financial liabilities
MediobancaGroup		100		364	Hedging derivatives, loans, financing and finance lease
FormerTelco Companies		—		548	Hedging derivatives and loans
Total Non-current financial liabilities		100		912
Current financial liabilities
MediobancaGroup		163		91	Hedging derivatives and loans
FormerTelco Companies		—		42	Current accounts, hedging derivatives and payables to other lenders
Total Current financial liabilities		163		133

Consolidated statement of financial position line items

	As of December 31, 2017		As of December 31, 2016		Type of contract
Trade and miscellaneous receivables and other current assets
Other Directors		3		—	Phone services and prepaid card recharges
Havas group		29		—	Purchase of media space on behalf of the TIM Group and, to a lesser extent, study and implementation of advertising campaigns.
Mediobanca Group		—		1	Telephone and MPLS data network services and sale of data devices and equipment for fixed and mobile networks.
Former Telco Companies		—		126	Supply of telephone and data transmission services, peripheral data networks, connections, storage, and telecommunications products and services Factoring services, supply of telephone, MPLS and international data network services, ICT services, Microsoft licenses, Internet connectivity and high-speed connections
Other minor companies		1		—
Total trade and miscellaneous receivables and other current assets		33		127
Miscellaneous payables and other non-current liabilities		—		2
Trade and miscellaneous payables and other current liabilities
Havas group		30		—	Purchase of media space on behalf of the TIM Group and, to a lesser extent, study and implementation of advertising campaigns
Mediobanca group		1		13	Credit recovery activities.
Former Telco Companies		—		183	Factoring fees, payable resulting from the collection of receivables sold, fees for smart card top-ups/activationand commissions for payment of telephone bills by direct debit and collections via credit cards
Vivendi group		2		4	Purchase of musical and television digital content (TIM MUSIC and TIM VISION)
Total trade and miscellaneous payables and other current liabilities		33		200

Consolidated statement of cash flows line items

	2017		2016		2015		Type of contract
	(millions of euros)
Purchase of intangible and tangible assets on an accrual basis		—		—		22	Acquisition of transmission capacity with the Telefónica group

TRANSACTIONS WITH PENSION FUNDS

Separate consolidated income statements line items

	2017			2016		2015		Type of contract
	(millions of euros)
Employee benefits expenses								Contributions to pension funds
Fontedir		10			11		11
Telemaco		67			69		70
Other pension funds		(3	)		3		5
Total employee benefits expenses		74			83		86

Consolidated statement of financial position line items

	As of December 31, 2017		As of December 31, 2016		Type of contract
	(millions of euros)
Trade and miscellaneous payables and other current liabilities					Payables for contributions to pension funds
Fontedir		3		4
Telemaco		21		21
Other pension funds		—		1
Total trade and miscellaneous payables and other current liabilities		24		26

* * *

REMUNERATION TO KEY MANAGERS

In 2017, the total remuneration recorded on an accrual basis by TIM or by companies controlled by the Group in respect of key managers amounted to 37.0 million euros (36.1 million euros in 2016). The figure breaks down as follows:

	2017			2016			2015
	(millions of euros)
Short-term remuneration		10.4	(1)		13.1	(4)		11.4	(5)
Long-term remuneration		0.1	(2)		1.9
Employment termination benefit incentives		25.5			12.0	(5)
Share-based payments (*)		1.0	(3)		9.1	(6)		2.5	(7)
		37.0			36.1			13.9

(*) These refer to the fair value of the rights, accrued to December 31, under the share-based incentive plans of TIM S.p.A. and its subsidiaries (2014/2016 Stock Option Plan, Special Award, and Stock Option Plans of the South American subsidiaries).

(1) of which 1.6 million recorded by Latin American subsidiaries.

(2) of which 0.1 million recorded by Latin American subsidiaries.

(3) of which 1.0 million recorded by Latin American subsidiaries.

(4) of which 1.1 million recorded by Latin American subsidiaries.

(5) of which 0.6 million recorded by Latin American subsidiaries.

(6) of which 0.2 million recorded by Latin American subsidiaries.

(7) of which 0.4 million recorded by Latin American subsidiaries.

Short-term remuneration is paid during the period it pertains to, and, at the latest, within the six months following the end of that period.

The employment termination benefit incentives for 2017 related to the amount awarded as a settlement to Flavio Cattaneo.

With respect to the Special Award, we report that long-term remuneration in 2016 did not include 3.6 million euros of provisions allocated to cover amounts that may be assigned on a discretionary basis to employees or directors of TIM or subsidiaries, because any beneficiaries that also held the role of Managers with Strategic Responsibilities had not yet been identified.

The beneficiaries of the bonus were identified in June 2017, with Key Managers assigned a total amount of 1,450,000 euros (of which 1,160,000 euros paid in the form of 1,487,178 TIM S.p.A. ordinary shares and for the part remaining from the cash amount).

Share-based payments for 2016 did not include the effects of the reversal of 3.7 million euros of accruals related to the costs for the 2014-2016 Stock Option Plan.

In 2017, the contributions paid for defined contribution plans (Assida and Fontedir) by TIM S.p.A. or by subsidiaries of the Group, on behalf of key managers, amounted to 97,000 euros (95,000 euros in 2016).

In 2017, “Key managers”, i.e. those who have the power and responsibility, directly or indirectly, for the planning, direction and control of the operations of the TIM Group, including directors, were the following:

Directors:
Arnaud Roy de Puyfontaine	(1) Executive Chairman of TIM S.p.A.
Giuseppe Recchi	(2) Executive Chairman of TIM S.p.A.
	(3) Deputy Executive Chairman of TIM S.p.A.
Flavio Cattaneo	(4) Managing Director and Chief Executive Officer of TIM S.p.A.
	(5) General Manager of TIM S.p.A.
Amos Genish	(3) Managing Director and Chief Executive Officer of TIM S.p.A.
	(3) General Manager of TIM S.p.A.
Managers:
Stefano De Angelis	Diretor Presidente Tim Participações S.A.
Stefano Azzi	Head of Consumer & Small Enterprise
Stefano Ciurli	Head of Wholesale
Giovanni Ferigo	Head of Technology
Lorenzo Forina	Head of Business & Top Clients
Francesco Micheli	(6) Head of Human Resources & Organizational Development
Cristoforo Morandini	Head of Regulatory Affairs and Equivalence
Agostino Nuzzolo	(7) Head of Corporate Legal Affairs
	(8) Head of Human Resources & Organizational Development
Piergiorgio Peluso	Head of Administration, Finance and Control
	(9) Head of Business Support Office

(1) from June 1, 2017;

(2) to May 31, 2017;

(3) from September 28, 2017;

(4) to July 27, 2017;

(5) to July 31, 2017;

(6) until November 30, 2017, responsibility for Human Resources & Organizational Development was assigned on an interim basis to the Head of Group Special Projects, Francesco Micheli;

(7) from January 10, 2017;

(8) from December 1, 2017, responsibility for Human Resources & Organizational Development was assigned on an interim basis to the Head of Corporate Legal Affairs, Agostino Nuzzolo;

(9) responsibility for the Business Support Office was assigned on an interim basis to the Chief Financial Officer of the Company, Piergiorgio Peluso, until December 18, 2017, when the function was discontinued.

DIRECTION AND COORDINATION ACTIVITY

Below is a summary of the key figures taken from the latest approved financial statements of the Company exercising Direction and Coordination.

VIVENDI S.A.

42 Avenue de Friedland—PARIS

		12/31/2016
		(millions of euros)
STATEMENT OF FINANCIAL POSITION
Other non-current assets			20,196.0
Current assets			6,878.4
Prepaid expenses			9.5
TOTAL ASSETS			27,083.9
EQUITY			18,854.8
Share capital	7,079.0
Reserves	9,804.9
Retained earnings (Accumulated losses), including profit (loss) for the year	1,970.9
Provisions			809.3
Liabilities			7,392.5
Unrealized exchange gains			27.3
TOTAL EQUITY AND LIABILITIES			27,083.9
INCOME STATEMENT
Revenues			46.0
EBIT			(110.4	)
Net financial income			862.1
Profit (loss) before extraordinary items and tax			751.7
Net extraordinary income			802.1
Income tax (expense)/return			55.7
Profit (loss) for the year			1,609.5

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Equity Compensation Plans

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Equity Compensation Plans

NOTE 40—EQUITY COMPENSATION PLANS

Equity compensation plans in place at December 31, 2017 are used for retention purposes and offer long-term incentives to Group managers and personnel.

A summary is provided below of the plans in place at December 31, 2017.

DESCRIPTION OF STOCK OPTION PLANS

TIM S.p.A. 2014-2016 Stock Option Plan

The objective of the 2014–2016 Stock Option Plan, introduced following its approval by the Board of Directors of the Company on June 26, 2014, was to encourage management holding organizational positions that are crucial to the company business to focus on the medium/long-term growth in value of company shares. It was aimed at the then Chief Executive Officer, Top Management (including Key Officers) and select TIM Group managers.

The Plan involved a three year (2014–2016) vesting period with two three-year performance conditions (Cumulated Free Cash Flow 2014-2016 and Total Shareholders Return for TIM versus 11 peers), and a ceiling on issuable shares of 196,000,000. The three-year exercise period (March 24, 2017–March 24, 2020) commenced following the approval of the financial statements for 2016 by the Board of Directors on March 23, 2017.

Based on final data approved, the number of exercisable options is 20% of the total options assigned to targets:

– the parameter relating to Cumulated Free Cash Flow (FCF) did not reach the minimum level, therefore no options linked to that parameter (50% of the total allocated to targets) will be exercisable;

– the Total Shareholder Return of TIM was in 8th place in the ranking of the 11 peers, giving the right to the vesting of 40% of the options linked to that parameter (50% of the total allocated to targets).

The exercise price was set, by the Board of Directors meeting that initiated the plan, at 0.94 euros per option (strike price). For the allocations made in 2015 and 2016, the strike price was determined as the higher of the price established upon initial allocation and the price resulting from the application of the above criteria at the time of allocation of the options. Below is the situation at December 31, 2017:

– 133,042 shares at a unit price of 1.15 euro;

– 343,069 shares at a unit price of 1.01 euros;

– 893,617 shares at a unit price of 0.99 euro;

– 13,555,651 shares at a unit price of 0.94 euros.

Tim Participações S.A. Stock Option Plan

· 2011–2013 Plan

On August 5, 2011, the General Meeting of Shareholders of Tim Participações S.A. approved the long-term incentive plan for managers in key positions in the company and its subsidiaries. Exercise of the options is subject to achieving two objectives simultaneously:

– absolute performance: increase in value of the Tim Participações S.A.’s shares;

– relative performance: performance of the prices of Tim Participações S.A.’s shares against a benchmark index mainly composed of in the Telecommunications, Information Technology and Media industry.

Performance targets refer to the three-year period 2011-2013 and performance is recorded in July of each year.

The vesting period is 3 years (a third per year), the options are valid for 6 years, and the company does not have the legal obligation to repurchase or liquidate the options in cash, or in any other form.

Year 2011

The grantees of the options were granted the right to purchase a total of 2,833,596 shares.

The exercise period expired in August 2017. As such, the plan is now closed.

Year 2012

On September 5, 2012 the grantees of the options were granted the right to purchase a total of 2,661,752 shares.

At December 31, 2017, all pending options were vested, but were not exercisable since the minimum performance condition had not been reached. A total of 255,556 options are still pending.

Year 2013

On July 30, 2013, the grantees of the options were granted the right to purchase a total of 3,072,418 shares.

At December 31, 2017, all pending options were vested, but were not exercisable since the minimum performance condition had not been reached. A total of 844,914 options are still pending.

· 2014-2016 Plan

On April 10, 2014, the General Meeting of Shareholders of Tim Participações S.A. approved the long-term incentive plan for managers in key positions in the company and its subsidiaries.

Exercise of the options is not subject to the achievement of specific performance targets, but the exercise price is adjusted upwards or downwards according to the performance of the Tim Participações S.A. shares in a ranking of Total Shareholder Return, in which companies in the Telecommunications, Information Technology and Media industry are compared during each year of validity of the plan. If the performance of the Tim Participações S.A. shares, in the 30 days prior to September 29 of each year, is in last place in that ranking, the participant loses the right to 25% of the options vesting at that time.

The vesting period is 3 years (a third per year), the options are valid for 6 years, and the company does not have the legal obligation to repurchase or liquidate the options in cash, or in any other form.

Year 2014

On September 29, 2014, the grantees of the options were granted the right to purchase a total of 1,687,686 shares.

At December 31, 2017, a total of 658,720 options were exercisable.

Year 2015

On October 16, 2015, the grantees of the options were granted the right to purchase a total of 3,355,229 shares.

In 2017, 760,358 options were exercised and 713,561 expired due to terminations. In the first wave, 197,132 options were exercised at a price of 8.7341 reais. The price was adjusted by 3.33% to reflect the ranking of the company against the other benchmarked companies.

In the second wave, 563,226 options were exercised at a price of 8.4625 reais, thanks to the improvement in the company’s ranking.

Year 2016

On November 8, 2016, the grantees of the options were granted the right to purchase a total of 3,922,204 shares. In December 2017, 788,374 options were exercised at a price of 7.6928 reais, reflecting a 5% adjustment thanks to the first place ranking of the company.

DESCRIPTION OF OTHER EQUITY COMPENSATION PLANS OF TIM S.p.A.

· Special Award 2016—2019

The Plan was approved by the Board of Directors on March 30, 2016, and by the Shareholders’ Meeting of May 25, 2016, for the part to be paid in shares.

The beneficiaries of the Plan were the former Chief Executive Officer Mr. Flavio Cattaneo and other managers identified by him.

In June 2017, additional beneficiaries of the Special Award were identified for the 1.5% of the 2016 over-performance.

As of December 31, 2017, total net liability amounted to 3.1 million euro (2.4 million euro of which consisted of 2,902,561 ordinary shares of Tim S.p.A. and the remaining part in cash).

The bonus is to be paid out following the approval of the financial statements for 2019, on the condition that the beneficiary is still working for a TIM Group company at the date of approval of the consolidated financial statements for 2019, except in the cases expressly contemplated, including, for example, in the case of early retirement or in the event that the company employing the beneficiary is scoped out of the Group.

On July 24, 2017, following the resignation of Mr. Cattaneo, an agreement was reached between the parties that provided for the payment of a gross amount of 22.9 million euros as a settlement arrangement. This amount takes particular, but not exclusive, account of the Special Award.

The resignation of Mr. Cattaneo resulted in the conclusion of the incentive plan.

For the component yet to be paid out to the beneficiaries identified in June 2017, 80% of the bonus will be paid in TIM ordinary shares (the number of shares will be calculated by dividing 80% of the bonus accrued in the year by the normal value of the shares at the vesting date) and 20% in cash.

The bonus actually paid, both for the cash and equity component, will be subject to the clawback mechanisms in force at the time.

The Board of Directors may choose to pay out all or part of the equity component of the bonus in cash, on the basis of the normal value of shares at the time of the approval of the consolidated financial statements for 2019.

CALCULATION OF FAIR VALUE MEASUREMENT OF THE GRANTED OPTIONS AND RIGHTS

Parameters used to determine fair value—Tim Participações S.A.

Plans/Parameters	Exercise price (reais)		Volatility		Period		Expected dividends (reais)		Risk-free interest rate
Stock option plan 2011		8.84		51.73%		6 years		—		11.94% per annum
Stock option plan 2012		8.96		50.46%		6 years		—		8.89% per annum
Stock option plan 2013		8.13		48.45%		6 years		—		10.66% per annum
Stock option plan 2014		13.42		44.6%		6 years		—		10.66% per annum
Stock option plan 2015		8.45		35.5%		6 years		—		16.10% per annum
Stock option plan 2016		8.10		36.70%		6 years		—		11.73% per annum

Effects on the income statement and statement of financial position

Equity compensation plans which call for payment in equity instruments are recorded at fair value which represents the cost of such instruments at the grant date and is recorded in the separate income statements under “Employee benefits expenses” over the period between the grant date and the vesting period with a contra-entry to the equity reserve “Other equity instruments”. For the portion of the plans that provide for the payment of compensation in cash, the amount is recognized in liabilities as a contra-entry to “Employee benefits expenses”; at the end of each year such liability is measured at fair value.

Equity compensation plans which call for payment in equity instruments did not have significant impacts either on the income statements or the statements of financial position or of cash flows of the TIM Group at December 31, 2017.

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Other Information

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Other Information

NOTE 41—OTHER INFORMATION

a)     Exchange rates used to convert the financial statements of foreign operations (*)

	Year-end exchange rates (statements of financial position items)						Average exchange rates for the year (income statements and statements of cash flows items)
(Local Currency against 1 euro)	12/31/2017		12/31/2016		12/31/2015		Year 2017		Year 2016		Year 2015
Europe
BGN Bulgarian Lev		1.95580		1.95580		1.95580		1.95580		1.95580		1.95580
CZK Czech Koruna		25.53500		27.02100		27.02300		26.32656		27.03443		27.28277
CHF Swiss Franc		1.17020		1.07390		1.08350		1.11171		1.09004		1.06813
TRY Turkish Lira		4.54640		3.70720		3.17650		4.12109		3.34284		3.02349
GBP Pound Sterling		0.88723		0.85618		0.73395		0.87640		0.81905		0.72612
RON Romanian Leu		4.65850		4.53900		4.52400		4.56884		4.49053		4.44555
RUB Russian Ruble		69.39200		64.30000		80.67400		65.90160		74.15831		68.03509
North America
USD U.S. Dollar		1.19930		1.05410		1.08870		1.12946		1.10666		1.10970
Latin America
VEF Venezuelan Bolivar		16.19055		14.23035		14.69745		15.18018		14.90133		13.71398
BOB Bolivian		8.28720		7.28383		7.52292		7.80453		7.64702		7.66808
PEN Peruvian Nuevo Sol		3.88540		3.54020		3.70833		3.68247		3.73505		3.53192
ARS Argentinean Peso		22.93100		16.74880		14.09720		18.73314		16.33204		10.26890
CLP Chilean Peso		737.29000		704.94500		772.71300		732.28973		748.49536		726.01073
COP Colombian Peso		3,580.19000		3,169.49000		3,456.01000		3,334.88410		3,376.68116		3,046.29559
BRL Brazilian Real		3.96728		3.43542		4.25116		3.60584		3.85935		3.69727
Other countries
ILS Israeli Shekel		4.16350		4.04770		4.24810		4.06091		4.24812		4.31323

(*) Source: data processed by the European Central Bank, Reuters and major Central Banks.

b)     Research and development

Expenditures for research and development activities are represented by external costs, labor costs of dedicated staff and depreciation and amortization. Details are as follows:

	2017		2016		2015
	(millions of euros)
Research and development costs expensed during the year		43		44		52
Development costs capitalized		1,949		1,704		1,668
Total research and development costs (expensed and capitalized)		1,992		1,748		1,720

The increase in 2017 is mainly related to engineering activities and to the diffusion and development of new generation networks, such as LTE and NGAN in Italy and 4G and LTE in Brazil.

Moreover, in the 2017 separate consolidated income statement, amortization charges are recorded for development costs, capitalized during the year and in prior years, for an amount of 819 million euros in 2017, 731 million euros in 2016 and 660 million euros in 2015.

c)     Operating leases

In accordance with IAS 17, the Group considers operating leases to be non-cancellable when they are only cancellable upon the occurrence of some remote contingencies, with the permission of the lessor, or upon payment by the lessee of such an additional amount (penalty) that continuation of the lease is reasonably certain at the inception of the lease.

In particular:

Revenue related

The Group has entered into agreements for line lease and hosting which cannot be canceled. At December 31, 2017 and 2016 the amount of lease installments receivables is as follows:

	At December 31, 2017		At December 31, 2016
	(millions of euros)
Within 1 year		124		118
From 2 to 5 years		238		247
Beyond 5 years		98		128
Total		460		493

Expense related

The Group has entered into agreements for lease of properties, vehicle rental and hosting which cannot be canceled. At December 31, 2017 and 2016 the amount of lease installments payables is as follows:

	At December 31, 2017		At December 31, 2016
	(millions of euros)
Within 1 year		177		175
From 2 to 5 years		298		287
Beyond 5 years		60		39
Total		535		501

The TIM Group has entered into non-cancelable operating leases on properties, vehicle rental agreements, rental agreements for IT products, equipment and devices and hosting contracts on sites owned by third parties.

The perimeter shown excludes leases classified as finance leases (mainly real estate leases and leases on equipment and industrial vehicles) and leases or lease periods considered cancelable. In this regard, for example, leasing practices in Brazil envisage clauses permitting the early termination of the lease without the application of additional charges.

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Events Subsequent to December 31, 2017

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Events Subsequent to December 31, 2017

NOTE 42—EVENTS SUBSEQUENT TO DECEMBER 31, 2017

JOINT VENTURE WITH CANAL+

On January 17, 2018, the Board of Directors of TIM noted that the term sheet agreed with Canal+ would expire on the following day.

Negotiations for a partnership agreement in the content sector have restarted, in line with the definition of the convergent offer of video content that is one of the key elements of the 2018–2020 TIM strategic plan.

Moreover, as provided by Consob and in line with the observations made by the Company’s Board of Statutory Auditors, the project will be subject to the procedure for significant related-party transactions, with the consequent involvement of the appropriate Committee composed of all independent Directors during negotiations.

DISPOSAL OF PERSIDERA S.p.A.

On February 23, 2018, the Board of Directors of TIM S.p.A. examined and approved by majority vote the acquisition offer on Persidera received from F2i and Rai Way, in consideration of the fact that the company is not a strategic asset for TIM.

Accordingly, the Board delegated the Chief Executive Officer Amos Genish to arrange the transaction, reserving the right to take into consideration any other binding offer that should be received.

In application, on a voluntary basis, of the procedure for transactions with related parties, the proposed transaction was submitted to the Control and Risk Committee, which approved it by majority vote.

APPROVAL OF THE PROJECT FOR THE VOLUNTARY SEPARATION OF THE FIXED ACCESS NETWORK

On March 6, 2018 TIM’s Board of Directors today granted CEO Amos Genish the power to start the formal procedure to notify AGCom of the Company’s request for a voluntary separation of its fixed access network.

The project provides for a separate legal entity (Netco) 100% controlled by TIM, owning the access network (from the exchange up to customers’ homes) and all the infrastructure (buildings, electronic equipment and IT systems) and staffed appropriately to provide wholesale services independently.

The project represents a turning point and establishes the most advanced network separation model in Europe, by creating a “one-stop-shop” access point for regulated and unregulated wholesale services for all operators including TIM, delivering a fully neutral and equivalent model.

The Netco will have the investment capabilities to maintain the highest quality network and help Italy meet the European 2025 Digital Agenda ultrabroadband goals. The initiative will contribute significantly to further develop the digitalization of the country, supporting the evolution of the current regulatory framework.

The creation of the Netco will leave the Group scope unchanged, and will occur in compliance with the Golden Power provisions.

AGCom will be notified of the project for the voluntary separation of the network according to the procedures and timing defined according to the Electronic Communications Code.

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List of Companies of the Tim Group

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

List of Companies of the Tim Group

NOTE 43—LIST OF COMPANIES OF THE TIM GROUP

The list is divided by type of investment, consolidation method and operating segment.

The following is indicated for each company: name, head office, country and share capital in the original currency, in addition to the percentage holding of share capital, the percentage of voting rights in the ordinary shareholders’ meeting if different than the percentage holding of share capital, and which companies hold the investment.

TIM Group

Name

Head Office

Currency

Share Capital

% ownership

% of voting rights

Held by

PARENT COMPANY

TIM S.p.A.

MILAN

EUR

11,677,002,855

(ITALY)

Subsidiaries consolidated line-by-line

DOMESTIC BUSINESS UNIT

4G RETAIL S.r.l.

MILAN

EUR

2,402,241

100.0000

TIM S.p.A.

(sale of fixed and mobile telecommunications products and services and all analog and digital broadcasting equipment)

(ITALY)

ADVANCED CARING CENTER S.r.l.

ROME

EUR

600,000

100.0000

TELECONTACT CENTER S.p.A.

(telemarketing, market research and surveys activities and development)

(ITALY)

ALFABOOK S.r.l.

TURIN

EUR

100,000

100.0000

OLIVETTI S.p.A.

(on-line sale of digital texts)

(ITALY)

CD FIBER S.r.l.

ROME

EUR

50,000

100.0000

TIM S.p.A.

(design, construction, maintenance and management of network infrastructure services and high-speed electronic communication systems)

(ITALY)

FLASH FIBER S.r.l.

MILAN

EUR

30,000

80.000

TIM S.p.A.

(development, implementation, maintenance and supply of the fiber network in Italy)

(ITALY)

H.R. SERVICES S.r.l.

L’AQUILA

EUR

500,000

100.0000

TIM S.p.A.

(personnel training and services)

(ITALY)

INFRASTRUTTURE WIRELESS ITALIANE S.p.A..

MILAN

EUR

600,000,000

60.0333

TIM S.p.A.

(installation and operation of installations and infrastructure for the management and the sale of telecommunications services)

(ITALY)

MED-1 SUBMARINE CABLES Ltd

RAMAT GAN

ILS

55,886,866

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(construction and management of submarine cable Lev1)

(ISRAEL)

NOVERCA S.r.l.

ROME

EUR

10,000

100.0000

TIM S.p.A.

(development and provision of services in the TLC and multimedia sector in Italy and abroad)

(ITALY)

OLIVETTI S.p.A.

IVREA

EUR

10,000,000

100.0000

TIM S.p.A.

(production and sale of office equipment and information technology services)

(TURIN— ITALY)

PERSIDERA S.p.A.

ROME

EUR

21,428,572

70.0000

TIM S.p.A.

(purchase, sale and maintenance of systems for repair work and radio and television broadcasting)

(ITALY)

TELECOM ITALIA SAN MARINO S.p.A.

BORGO MAGGIORE

EUR

1,808,000

100.0000

TIM S.p.A.

(San Marino telecommunications management)

(REPUBLIC OF SAN MARINO)

TELECOM ITALIA SPARKLE S.p.A.

ROME

EUR

200,000,000

100.0000

TIM S.p.A.

(completion and management of telecommunications services for public and private use)

(ITALY)

TELECOM ITALIA TRUST TECHNOLOGIES S.r.l.

POMEZIA

EUR

7,000,000

100.0000

TIM S.p.A.

(other operations related to non-classified IT services)

(ROME— ITALY)

TELECOM ITALIA VENTURES S.r.l.

MILAN

EUR

10,000

100.0000

TIM S.p.A.

(investment holding company)

(ITALY)

TELECONTACT CENTER S.p.A.

NAPLES

EUR

3,000,000

100.0000

TIM S.p.A.

(telemarketing services)

(ITALY)

TELEFONIA MOBILE SAMMARINESE S.p.A.

BORGO MAGGIORE

EUR

78,000

51.0000

TELECOM ITALIA SAN MARINO S.p.A.

(development and management of mobile telecommunications plants and services)

(REPUBLIC OF SAN MARINO)

TELENERGIA S.r.l.

ROME

EUR

50,000

100.0000

TIM S.p.A.

(import, export, purchase, sale and trade of electricity)

(ITALY)

TELSY ELETTRONICA E TELECOMUNICAZIONI S.p.A.

TURIN

EUR

390,000

100.0000

TIM S.p.A.

(production and sale of equipment and systems for crypto telecommunications)

(ITALY)

TI SPARKLE AMERICAS Inc.

MIAMI

USD

10,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(managed bandwidth services)

(USA)

TI SPARKLE ARGENTINA S.A.

BUENOS AIRES

ARS

9,998,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(managed bandwidth services)

(ARGENTINA)

TI SPARKLE AUSTRIA GmbH

VIENNA

EUR

2,735,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(AUSTRIA)

TI SPARKLE BELGIUM S.P.R.L.—B.V.B.A

BRUSSELS

EUR

2,200,000

99.9999

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(BELGIUM)

0.0001

TI SPARKLE UK Ltd

TI SPARKLE BOLIVIA SRL

LA PAZ

BOB

1,747,600

99.9999

TELECOM ITALIA SPARKLE S.p.A.

(managed bandwidth services)

(BOLIVIA)

0.0001

TI SPARKLE AMERICAS Inc.

TI SPARKLE BRASIL PARTICIPACOES Ltda

RIO DE JANEIRO

BRL

71,563,866

99.9999

TELECOM ITALIA SPARKLE S.p.A.

(investment holding company)

(BRAZIL)

0.0001

TI SPARKLE AMERICAS Inc.

TI SPARKLE BRASIL TELECOMUNICACIONES Ltda

RIO DE JANEIRO

BRL

69,337,363

99.9999

TI SPARKLE BRASIL PARTICIPACOES Ltda

(managed bandwidth services)

(BRAZIL)

0.0001

TI SPARKLE AMERICAS Inc.

TI SPARKLE BULGARIA EOOD

SOFIA

BGN

100,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(BULGARIA)

TI SPARKLE CHILE S.p.A.

SANTIAGO

CLP

5,852,430,960

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(managed bandwidth services)

(CHILE)

TI SPARKLE COLOMBIA Ltda

BOGOTA’

COP

5,246,906,000

99.9999

TELECOM ITALIA SPARKLE S.p.A.

(managed bandwidth services)

(COLOMBIA)

0.0001

TI SPARKLE AMERICAS Inc.

TI SPARKLE CZECH S.R.O.

PRAGUE

CZK

6,720,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(CZECH REPUBLIC)

TI SPARKLE FRANCE S.A.S.

PARIS

EUR

18,295,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(installation and management of telecommunications services for fixed network and related activities)

(FRANCE)

TI SPARKLE GERMANY GmbH

FRANKFURT

EUR

25,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(GERMANY)

TI SPARKLE GREECE S.A.

ATHENS

EUR

368,760

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(GREECE)

TI SPARKLE ISRAEL Ltd

RAMAT GAN

ILS

1,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(international wholesale telecommunication services)

(ISRAEL)

TI SPARKLE MED S.p.A.

ROME

EUR

3,100,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(installation and management of submarine cable systems)

(ITALY)

TI SPARKLE NORTH AMERICA. INC.

NEW YORK

USD

15,550,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications and promotional services)

(USA)

TI SPARKLE NETHERLANDS B.V.

AMSTERDAM

EUR

18,200

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(NETHERLANDS)

TI SPARKLE PANAMA S.A.

PANAMA

USD

10,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(managed bandwidth services)

TI SPARKLE PERU’ S.A.

LIMA

PEN

57,101,788

99.9999

TELECOM ITALIA SPARKLE S.p.A.

(managed bandwidth services)

(PERÙ)

0.0001

TI SPARKLE AMERICAS Inc.

TI SPARKLE PUERTO RICO LLC

SAN JUAN

USD

50,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(managed bandwidth services)

(PUERTO RICO)

TI SPARKLE ROMANIA S.R.L.

BUCHAREST

RON

3,021,560

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(ROMANIA)

TI SPARKLE RUSSIA LLC

MOSCOW

RUB

8,520,000

99.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(RUSSIA)

1.0000

TI SPARKLE UK Ltd

TI SPARKLE SINGAPORE PTE. Ltd

SINGAPORE

USD

5,121,120

99.9999

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

0.0001

TI SPARKLE NORTH AMERICA. INC.

TI SPARKLE SLOVAKIA S.R.O.

BRATISLAVA

EUR

300,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(SLOVAKIA)

TI SPARKLE SPAIN TELECOMMUNICATIONS SL

MADRID

EUR

1,687,124

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(SPAIN)

TI SPARKLE St. Croix LLC

VIRGIN ISLANDS

USD

1,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(managed bandwidth services)

(USA)

TI SPARKLE SWITZERLAND GmbH

ZURICH

CHF

2,000,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(SWITZERLAND)

TI SPARKLE TURKEY TELEKOMÜNIKASYON ANONIM SIRKETI

YENISBONA

TRY

40,600,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(ISTANBUL- TURKEY)

TI SPARKLE UK Ltd

LONDON

EUR

3,983,254

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(value-added and networking services)

(UK)

TI SPARKLE VENEZUELA C.A.

CARACAS

VEF

981,457

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(managed bandwidth service)

(VENEZUELA)

TIMB2 S.r.l.

ROME

EUR

10,000

99.0000

PERSIDERA S.p.A.

(management of television frequency user rights)

(ITALY)

1.0000

TIM S.p.A.

TIMVISION S.r.l.

ROME

EUR

50,000

100.0000

TIM S.p.A.

(production, co-production, conception and creation of programs, films and audiovisual content, including multimedia and interactive content)

(ITALY)

TN FIBER S.r.l.

TRENTO

EUR

55,918,000

100.0000

TIM S.p.A.

(design, construction, maintenance and supply of optical network access to users in the province of Trento)

(ITALY)

BRAZIL BUSINESS UNIT

TIM BRASIL SERVIÇOS E PARTICIPAÇÕES S.A.

RIO DE JANEIRO

BRL

7,169,029,859

99.9999

TELECOM ITALIA FINANCE S.A.

(investment holding company)

(BRAZIL)

0.0001

TIM S.p.A.

TIM CELULAR S.A.

SAO PAULO

BRL

9,434,215,720

100.0000

TIM PARTICIPAÇÕES S.A.

(telecommunications services)

(BRAZIL)

TIM PARTICIPAÇÕES S.A.

RIO DE JANEIRO

BRL

9,913,414,422

66.5819

TIM BRASIL SERVIÇOS E PARTICIPAÇÕES S.A.

(investment holding company)

(BRAZIL)

0.0662

TIM PARTICIPAÇÕES S.A.

TIM S.A. (formerly INTELIG TELECOMUNICAÇÕES Ltda)

RIO DE JANEIRO

BRL

4,041,956,045

99.9999

TIM PARTICIPAÇÕES S.A.

(telecommunications services)

(BRAZIL)

0.0001

TIM CELULAR S.A.

OTHER OPERATIONS

OLIVETTI DEUTSCHLAND GmbH

NURNBERG

EUR

25,600,000

100.0000

OLIVETTI S.p.A.

(sale of office equipment and supplies)

(GERMANY)

OLIVETTI ESPANA S.A. (IN LIQUIDATION)

BARCELONA

EUR

1,229,309

100.0000

OLIVETTI S.p.A.

(sale and maintenance of office supplies, consultancy and network management)

(SPAIN)

OLIVETTI UK Ltd

NORTHAMPTON

GBP

6,295,712

100.0000

OLIVETTI S.p.A.

(sale of office equipment and supplies)

(UK)

TELECOM ITALIA CAPITAL S.A.

LUXEMBOURG

EUR

2,336,000

100.0000

TIM S.p.A.

(financial company)

(LUXEMBOURG)

TELECOM ITALIA FINANCE S.A.

LUXEMBOURG

EUR

1,818,691,979

100.0000

TIM S.p.A.

(financial company)

(LUXEMBOURG)

TELECOM ITALIA LATAM PARTICIPACOES E GESTAO ADMINISTRATIVA Ltda

SAO PAULO

BRL

118,925,803

100.0000

TIM S.p.A.

(provision of telecommunications and representation services)

(BRAZIL)

TIAUDIT COMPLIANCE LATAM S.A. (IN LIQUIDATION)

RIO DE JANEIRO

BRL

1,500,000

69.9996

TIM S.p.A.

(internal auditing services)

(BRAZIL)

30.0004

TIM BRASIL SERVICOS E PARTICIPACOES S.A.

TIESSE S.c.p.A.

IVREA

EUR

103,292

61.0000

OLIVETTI S.p.A.

(installation and assistance for electronic, IT, telematics and telecommunications equipment)

(TURIN-ITALY)

TIM TANK S.r.l.

MILAN

EUR

18,100,000

100.0000

TIM S.p.A.

(fund and securities investments)

(ITALY)

Associates and joint ventures accounted for using the equity method

ALFIERE S.p.A. (*)

ROME

EUR

9,250,000

50.0000

TIM S.p.A.

(real estate management)

(ITALY)

AREE URBANE S.r.l. (IN LIQUIDATION)

MILAN

EUR

100,000

32.6200

TIM S.p.A.

(real estate management)

(ITALY)

ASSCOM INSURANCE BROKERS S.r.l.

MILAN

EUR

100,000

20.0000

TIM S.p.A.

(insurance brokerage)

(ITALY)

BALTEA S.r.l. (IN BANKRUPTCY)

IVREA

EUR

100,000

49.0000

OLIVETTI S.p.A.

(production and sale of office products and telecommunications IT services)

(TURIN— ITALY)

CLOUDESIRE.COM S.r.l.

PISA

EUR

11,671

(

**)

TELECOM ITALIA VENTURES S.r.l.

(design, implementation and marketing of a marketplace platform for the sale of a software as-a-service applications)

(ITALY)

CONSORZIO ANTENNA COLBUCCARO

ASCOLI PICENO

EUR

121,000

20.0000

PERSIDERA S.p.A.

(installation, management and maintenance ofmetal pylons complete with workstations for device recovery)

(ITALY)

CONSORZIO ANTENNA MONTECONERO

SIROLO

EUR

51,100

22.2211

PERSIDERA S.p.A.

(multimedia services)

(ANCONA-ITALY)

CONSORZIO E O (IN LIQUIDATION)

ROME

EUR

30,987

50.0000

TIM S.p.A.

(training services)

(ITALY)

DONO PER S.C.A.R.L. (IN LIQUIDATION)

ROME

EUR

30,000

33.3333

TIM S.p.A.

(collection and distribution of funds for charitable purposes or for financing of political parties or political and social movements)

(ITALY)

ECO4CLOUD S.r.l.

RENDE

EUR

19,532

(

**)

TELECOM ITALIA VENTURES S.r.l.

(development, production and sale of innovative products or services with high technological value

(COSENZA-ITALY)

ITALTEL GROUP S.p.A.

SETTIMO MILANESE (MILAN—

EUR

825,695

34.6845

19.3733

TELECOM ITALIA FINANCE S.A.

(investment holding company)

(ITALY)

KOPJRA S.r.l.

SCHIO

EUR

16,207

22.8491

TELECOM ITALIA VENTURES S.r.l.

(development , production and sale of innovative products or services with high-tech value)

(VICENZA-ITALY)

MOVENDA S.p.A.

ROME

EUR

133,333

24.9998

TELECOM ITALIA FINANCE SA

(design, construction and diffusion of internet sites, products and computer media)

(ITALY)

NORDCOM S.p.A.

MILAN

EUR

5,000,000

42.0000

TIM S.p.A.

(application service provider)

(ITALY)

OILPROJECT S.r.l.

MILAN

EUR

13,556

(

**)

TELECOM ITALIA VENTURES S.r.l.

(research, development, marketing and patenting of all intellectual property related to technology, information technology and TLC)

(ITALY)

PEDIUS S.r.l.

ROME

EUR

159

(

**)

TELECOM ITALIA VENTURES S.r.l.

(implementation of specialized telecommunications applications, telecommunications services over telephone connections, VoIP services)

(ITALY)

TIGLIO I S.r.l.

MILAN

EUR

5,255,704

47.8019

TIM S.p.A.

(real estate management)

(ITALY)

TIGLIO II S.r.l. (IN LIQUIDATION)

MILAN

EUR

10,000

49.4700

TIM S.p.A.

(real estate management)

(ITALY)

W.A.Y. S.r.l.

TURIN

EUR

136,383

39.9999

OLIVETTI S.p.A.

(development and sale of geolocation products and systems for security and logistics)

(ITALY)

WIMAN S.r.l.

MATTINATA

EUR

21,568

(

**)

TELECOM ITALIA VENTURES S.r.l.

(development, management and implementation of platforms for social-based Wi-Fiauthentications)

(FOGGIA-ITALY)

Other significant investments

CONSORZIO ANTENNA TOLENTINO

RECANATI

EUR

86,000

16.6666

PERSIDERA S.p.A.

(installation, management and maintenance of pylons complete with workstation for device recovery)

(MACERATA-ITALY)

CONSORZIO EMITTENTI RADIOTELEVISIVE

BOLOGNA

EUR

119,309

18.6600

PERSIDERA S.p.A.

(broadcasting activities)

(ITALY)

CONSORZIO HEALTH INNOVATION HUB (IN LIQUIDATION)

TRENTO

EUR

48,000

12.5000

TIM S.p.A.

(development of the market for systems and services for the sector social and health)

(ITALY)

DAHLIA TV S.p.A. (IN LIQUIDATION)

ROME

EUR

11,318,833

10.0800

TIM S.p.A.

(pay-per-view services)

(ITALY)

FIN.PRIV. S.r.l.

MILAN

EUR

20,000

14.2900

TIM S.p.A.

(financial company)

(ITALY)

IGOON. S.r.l.

NAPLES

EUR

16,498

14.2805

TELECOM ITALIA VENTURES S.r.l

(development of mobile platforms and applications able to provide user with innovative solutions for organizing and sharing all their digital content)

(ITALY)

INNAAS S.r.l.

ROME

EUR

108,700

13.0046

TELECOM ITALIA VENTURES S.r.l.

(design, development and sale of high-tech software and hardware)

(ITALY)

ITALBIZ.COM Inc.

DELAWARE

USD

4,721

19.5000

TIM S.p.A.

(internet services)

(USA)

MIX S.r.l.

MILAN

EUR

99,000

10.8500

TIM S.p.A.

(internet service provider)

(ITALY)

TXN Società a Responsabilità Limitata Semplificata

ARIANO IRPINO

EUR

333

14.4991

TELECOM ITALIA VENTURES S.r.l.

(software development)

(AVELLINO-ITALY)

(*) Joint Venture.

(**) Associates over which TIM S.p.A., directly and indirectly, exercise significant influence pursuant to IAS 28 (Investments in Associates and Joint Ventures).

XML

Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Going concern

Going concern

The consolidated financial statements for the year ended December 31, 2017 have been prepared on a going concern basis as there is the reasonable expectation that TIM will continue its operational activities in the foreseeable future (and in any event with a time horizon of at least twelve months).

In particular, consideration has been given to the following factors:

· the main risks and uncertainties (that are for the most part of external in nature) to which the Group and the various activities of the TIM Group are exposed:

· macroeconomic changes in the Italian, European and Brazilian market, as well as the volatility of financial markets in the Eurozone, also as a result of the “Brexit” referendum in the United Kingdom;

· variations in business conditions also related to competition;

· changes to laws and regulations (price and rate variations, or decisions that may affect the technological choices);

· outcomes of legal disputes and proceedings with regulatory authorities, competitors and other parties;

· financial risks (interest rate and/or exchange rate trends, changes in the Group’s credit rating by rating agencies);

· the optimal mix between risk capital and debt capital as well as the policy for the remuneration of risk capital, described in the paragraph “Share capital information” under the Note “Equity”;

· the policy for financial risk management (market risk, credit risk and liquidity risk) as described in the Note “Financial risk management”.

Management believes that, at the present time, such factors do not raise substantial doubts as to the Group’s ability to continue as a going concern.

Principles of consolidation

Principles of consolidation

The consolidated financial statements include the financial statements of all subsidiaries from the date control over such subsidiaries commences until the date that control ceases.

The statement of financial position date of all the subsidiaries’ financial statements coincides with that of the Parent.

Control exists when the Parent has all the following:

· power over the investee, which includes the ability to direct the relevant activities of the investee, i.e. the activities that significantly affect the investee’s returns;

· exposure, or rights, to variable returns from its involvement with the investee;

· the ability to use its power over the investee to affect the amount of the investor’s returns.

TIM assesses whether it controls an investee if facts and circumstances indicate that there are changes in one or more of the three control elements.

In the preparation of the consolidated financial statements, assets, liabilities, revenues and expenses of the consolidated companies are consolidated on a line-by-line basis and non-controlling interests in equity and in the profit (loss) for the year are disclosed separately under appropriate captions, respectively, in the consolidated statement of financial position, in the separate consolidated income statement and in the consolidated statement of comprehensive income.

Under IFRS 10 (Consolidated financial statements), the total comprehensive loss (including the profit or loss for the year) is attributed to the owners of the parent and to the non-controlling interests even if this results in the non-controlling interests having a deficit balance.

All intragroup balances and transactions and any gains or losses arising from intragroup transactions are eliminated upon consolidation.

The carrying amount of the investment in each subsidiary is eliminated against the corresponding share of equity in each subsidiary, after adjustment, if any, to fair value at the acquisition date of control. At that date, goodwill is recorded as an intangible asset, as described below, whereas any gain from a bargain purchase or negative goodwill is recognized in the separate consolidated income statement.

Assets and liabilities of foreign consolidated subsidiaries which are denominated in currencies other than euro are converted at the exchange rates prevailing at the statement of financial position date (the current method); income and expenses are converted at the average exchange rates for the year. Exchange differences resulting from the application of this method are classified as equity until the entire disposal of the investment or upon loss of control of the foreign subsidiary. Upon partial disposal, without losing control, the proportionate share of the cumulative amount of exchange differences related to the disposed interest is recognized in non-controlling interests.

The cash flows of foreign consolidated subsidiaries denominated in currencies other than Euro included in the consolidated statement of cash flows are converted into Euro at the average exchange rates for the year.

Goodwill and fair value adjustments arising from the allocation of the purchase price of a foreign entity are recorded in the relevant foreign currency and are converted using the year-end exchange rate.

Under IFRS 10, changes in a parent’s ownership interest in a subsidiary that do not result in a loss or acquisition of control are accounted for as equity transactions. In such circumstances the carrying amounts of the controlling and non-controlling interests shall be adjusted to reflect the changes in their relative interests in the subsidiary. Any difference between the amount by which the non-controlling interests are adjusted and the fair value of the consideration paid or received shall be recognized directly in equity and attributed to the owners of the Parent.

Under IFRS 10, the parent company in case of loss of control of a subsidiary:

· derecognizes:

· the assets (including any goodwill) and liabilities;

· the carrying amount of any non-controlling interests;

· recognizes:

· the fair value of the consideration received, if any, from the transaction;

· any investment retained in the former subsidiary at its fair value at the date when control is lost;

· any gain or loss, resulting from the transaction, in the separate consolidated income statement;

· the reclassification to the separate consolidated income statement, of the amounts previously recognized in other comprehensive income in relation to the subsidiary.

In the consolidated financial statements, investments in associates and joint ventures are accounted for using the equity method, as provided, respectively, by IAS 28 (Investments in Associates and Joint Ventures) and IFRS 11 (Joint Arrangements).

Associates are all entities in which the Group holds at least 20% of the voting rights or exercises significant influence, but no control or joint control over the financial and operating policies.

A joint venture is a joint arrangement whereby the parties that have joint control of the arrangement have rights to the net assets of the arrangement.

Joint control is the contractually agreed sharing of control of an arrangement, which exists only when decisions about the relevant activities require the unanimous consent of the parties sharing control.

Associates and joint ventures are included in the consolidated financial statements from the date that significant influence or joint control commences until the date such significant influence or joint control ceases.

Under the equity method, on initial recognition the investment in an associate or a joint venture is recognized at cost, and the carrying amount is increased or decreased to recognize the investor’s share of the profit or loss of the investee after the date of acquisition. The investor’s share of the investee’s profit or loss is recognized in the investor’s income statement. Dividends received from an investee reduce the carrying amount of the investment. Adjustments to the carrying amount may also be necessary for changes in the investee’s other comprehensive income (i.e. those arising from foreign exchange conversion differences). The investor’s share of those changes is recognized in the investor’s other comprehensive income.

If an investor’s share of losses of an associate or a joint venture equals or exceeds its interest in the associate or joint venture, the investor discontinues recognizing its share of further losses.

After the investor’s interest is reduced to zero, additional losses are provided for, and a liability is recognized, only to the extent that the investor has incurred legal or constructive obligations or made payments on behalf of the associate or joint venture. If the associate or joint venture subsequently reports profits, the investor resumes recognizing its share of those profits only after its share of the profits equals the share of losses not recognized.

Gains and losses resulting from “upstream” and “downstream” transactions between an investor (including its consolidated subsidiaries) and its associate or joint venture are recognized in the investor’s financial statements only to the extent of unrelated investors’ interests in the associate or joint venture.

Gains and losses arising from transactions with associates or joint ventures are eliminated to the extent of the Group’s interest in those entities.

Intangible assets

Intangible assets

Goodwill

Under IFRS 3 (Business Combinations), goodwill is recognized as of the acquisition date of control and measured as the excess of (a) over (b) below:

a) the aggregate of:

· the consideration transferred (measured in accordance with IFRS 3; it is generally recognized on the basis of the acquisition date fair value);

· the amount of any non-controlling interest in the acquiree measured at the non-controlling interest’s proportionate share of the acquiree’s identifiable net assets at the acquisition date fair value;

· in a business combination achieved in stages, the acquisition date fair value of the acquirer’s previously held equity interest in the acquiree;

b) the acquisition date fair value of the identifiable assets acquired net of the identifiable liabilities assumed measured at the acquisition date of control.

IFRS 3 requires, inter alia, the following:

· incidental costs incurred in connection with a business combination are charged to the separate consolidated income statement;

· in a business combination achieved in stages, the acquirer shall remeasure its previously held equity interest in the acquiree at its fair value at the acquisition date of control and recognize the resulting gain or loss, if any, in the separate consolidated income statement.

Goodwill is classified in the statement of financial position as an intangible asset with an indefinite useful life.

Goodwill initially recorded is subsequently reduced only for impairment losses. Further details are provided in the accounting policy Impairment of tangible and intangible assets—Goodwill, reported below. In case of loss of control of a subsidiary, the relative amount of goodwill is taken into account in calculating the gain or loss on disposal.

Development costs

Costs incurred internally for the development of new products and services represent either intangible assets (mainly costs for software development) or tangible assets. Such costs are capitalized only when all the following conditions are satisfied: i) the cost attributable to the development phase of the asset can be measured reliably, ii) there is the intention, the availability of financial resources and the technical ability to complete the asset and make it available for use or sale and iii) it can be demonstrated that the asset will be able to generate future economic benefits.

Capitalized development costs comprise only expenditures that can be attributed directly to the development process for new products and services.

Capitalized development costs are amortized systematically over the estimated product or service life so that the amortization method reflects the way in which the asset’s future economic benefits are expected to be consumed by the entity.

Other intangible assets with a finite useful life

Other purchased or internally-generated assets with a finite useful life are recognized as assets, in accordance with IAS 38 (Intangible Assets), where it is probable that the use of the asset will generate future economic benefits and where the cost of the asset can be measured reliably.

Such assets are recorded at purchase or production cost and amortized on a straight-line basis over their estimated useful lives; the amortization rates are reviewed annually and revised if the current estimated useful life is different from that estimated previously. The effect of such changes is recognized in the separate consolidated income statement prospectively.

For a small portion of mobile offerings, the Group capitalizes directly attributable subscriber acquisition costs (currently mainly represented by commissions for the sales network) when the following conditions are met:

· the capitalized costs can be measured reliably;

· there is a contract binding the customer for a specific period of time;

· it is probable that the amount of the capitalized costs will be recovered through the revenues generated by the services contractually provided, or, where the customer withdraws from the contract in advance, through the collection of a penalty.

Capitalized subscriber acquisition costs are amortized on a straight-line basis over the foreseen minimum period of the underlying contract (between 12 and 36 months).

In all other cases, subscriber acquisition costs are recognized in the separate consolidated income statement when incurred.

Tangible assets

Tangible assets

Property, plant and equipment owned

Property, plant and equipment owned is stated at acquisition or production cost. Subsequent expenditures are capitalized only if they increase the future economic benefits embodied in the related item of property, plant and equipment. All other expenditures are expensed as incurred.

Cost also includes the expected costs of dismantling the asset and restoring the site if a legal or constructive obligation exists. The corresponding liability is recognized at its present value as a provision in the statement of financial position. These capitalized costs are depreciated and charged to the separate consolidated income statement over the useful life of the related tangible assets.

The recalculation of estimates for dismantling costs, discount rates and the dates in which such costs are expected to be incurred is reviewed annually, at each financial year-end. Changes in the above liability must be recognized as an increase or decrease of the cost of the relative asset; the amount deducted from the cost of the asset must not exceed its carrying amount. The excess if any, should be recorded immediately in the separate consolidated income statement, conventionally under the line item “Depreciation”.

Depreciation of property, plant and equipment owned is calculated on a straight-line basis over the estimated useful life of the assets.

The depreciation rates are reviewed annually and revised if the current estimated useful life is different from that estimated previously. The effect of such changes is recognized in the separate consolidated income statement prospectively.

Land, including land pertaining to buildings, is not depreciated.

Assets held under finance leases

Assets held under finance leases, in which substantially all the risks and rewards of ownership are transferred to the Group, are initially recognized as assets of the Group at fair value or, if lower, at the present value of the minimum lease payments, including bargain purchase options. The corresponding liability due to the lessor is included in the statement of financial position under financial liabilities.

Lease payments are apportioned between interest (recognized in the separate consolidated income statement) and principal (recognized as a deduction from liabilities). This split is determined so as to produce a constant periodic rate of interest on the remaining balance of the liability.

Furthermore, gains realized on sale and leaseback transactions that are recorded under finance lease contracts are deferred over the lease term.

The depreciation policy for depreciable assets held under finance leases is consistent with that for depreciable assets that are owned. If there is no reasonable certainty over the acquisition of the ownership of the asset at the end of the lease period, assets held under finance leases are depreciated over the shorter of the lease term and their useful lives.

Leases where the lessor retains substantially all the risks and rewards of ownership of the assets are accounted for as operating leases. Operating lease rentals are charged to the separate consolidated income statement on a straight-line basis over the lease term.

When a lease includes both land and buildings, an entity assesses the classification of each element as a finance or an operating lease separately.

Capitalized borrowing costs

Capitalized borrowing costs

Under IAS 23 (Borrowing Costs), the Group capitalizes borrowing costs only if they are directly attributable to the acquisition, construction or production of a qualifying asset, that is an asset that takes a substantial period of time (conventionally more than 12 months) to get ready for its intended use or sale.

Capitalized borrowing costs are recorded in the separate consolidated income statement and deducted from the “finance expense” line item to which they relate.

Impairment of intangible and tangible assets

Impairment of intangible and tangible assets

Goodwill

Goodwill is tested for impairment at least annually or more frequently whenever events or changes in circumstances indicate that goodwill may be impaired, as set forth in IAS 36 (Impairment of Assets); however, when the conditions that gave rise to an impairment loss no longer exist, the original amount of goodwill is not reinstated.

The test is generally conducted at the end of every year so the date of testing is the year-end closing date of the financial statements. Goodwill acquired and allocated during the year is tested for impairment at the end of the year in which the acquisition and allocation took place.

To test for impairment, goodwill is allocated at the date of acquisition to each cash-generating unit or group of cash-generating units which is expected to benefit from the acquisition.

If the carrying amount of the cash-generating unit (or group of cash-generating units) exceeds the recoverable amount, an impairment loss is recognized in the separate consolidated income statement. The impairment loss is first recognized as a deduction of the carrying amount of goodwill allocated to the cash-generating unit (or group of cash-generating units) and then only applied to the other assets of the cash-generating unit in proportion to their carrying amount, up to the recoverable amount of the assets with a finite useful life. The recoverable amount of a cash-generating unit (or group of cash-generating units) to which goodwill is allocated is the higher of fair value less costs to sell and its value in use.

In calculating the value in use, the estimated future cash flows are discounted to present value using a discount rate that reflects current market assessments of the time value of money and the risks specific to the asset. The future cash flows are those arising from an explicit time horizon between three and five years as well as those extrapolated to estimate the terminal value. The long-term growth rate used to estimate the terminal value of the cash-generating unit (or group of cash-generating units) is assumed not to be higher than the average long-term growth rate of the segment, country or market in which the cash-generating unit (or group of cash-generating units) operates.

The value in use of cash-generating units denominated in foreign currency is estimated in the local currency by discounting cash flows to present value on the basis of an appropriate rate for that currency. The present value obtained is converted to euro at the spot rate on the date of the impairment test (in the case of the TIM Group, the date of the financial statements).

Future cash flows are estimated by referring to the current operating conditions of the cash generating unit (or group of cash-generating units) and, therefore, do not include either benefits originating from future restructuring for which the entity is not yet committed, or future investments for the improvement or optimization of the cash-generating unit.

For the purpose of calculating impairment, the carrying amount of the cash-generating unit is established based on the same criteria used to determine the recoverable amount of the cash generating unit, excluding surplus assets (that is, financial assets, deferred tax assets and net non-current assets held for sale) and includes the goodwill attributable to non-controlling interests.

After conducting the goodwill impairment test for the cash-generating unit (or groups of cash-generating units), a second level of impairment testing is carried out which includes the corporate assets which do not generate positive cash flows and which cannot be allocated by a reasonable and consistent criterion to the single units. At this second level, the total recoverable amount of all cash-generating units (or groups of cash-generating units) is compared to the carrying amount of all cash-generating units (or groups of cash-generating units), including also those cash-generating units to which no goodwill was allocated, and the corporate assets.

Intangible and tangible assets with a finite useful life

At every closing date, the Group assesses whether there are any indications of impairment of intangible and tangible assets with a finite useful life. Both internal and external sources of information are used for this purpose. Internal sources include obsolescence or physical damage, and significant changes in the use of the asset and the economic performance of the asset compared to estimated performance. External sources include the market value of the asset, changes in technology, markets or laws, trend in market interest rates and the cost of capital used to evaluate investments, and an excess of the carrying amount of the net assets of the Group over market capitalization.

When indicators of impairment exist, the carrying amount of the assets is reduced to the recoverable amount. The recoverable amount of an asset is the higher of fair value less costs to sell and its value in use. In calculating the value in use, the estimated future cash flows are discounted to present value using a discount rate that reflects current market assessments of the time value of money and the risks specific to the asset. Where it is not possible to estimate the recoverable amount of an individual asset, the Group estimates the recoverable amount of the cash-generating unit to which the asset belongs. Impairment losses are recognized in the separate consolidated income statement.

When the conditions that gave rise to an impairment loss no longer exist, the carrying amount of the asset or cash-generating unit is increased to the revised estimate of its recoverable amount, up to the carrying amount that would have been recorded had no impairment loss been recognized. The reversal of an impairment loss is recognized as income in the separate consolidated income statement.

Financial instruments

Financial instruments

Other investments

Other investments (other than those in subsidiaries, associates and joint ventures) are classified as non-current or current assets if they will be kept in the Group’s portfolio for a period of more or not more than 12 months, respectively.

Upon acquisition, investments are classified in the following categories:

· “available-for-sale financial assets”, as non-current or current assets;

· “financial assets at fair value through profit or loss”, as current assets held for trading.

Other investments classified as “available-for-sale financial assets” are measured at fair value; changes in the fair value of these investments are recognized in a specific equity reserve under the other components of the statement of comprehensive income (Reserve for available-for-sale financial assets) until the financial asset is disposed of or impaired, at which time the equity reserve is reversed to the separate consolidated income statement.

Other unlisted investments classified as “available-for-sale financial assets” whose fair value cannot be measured reliably are measured at cost adjusted by any impairment losses which are recognized in the separate consolidated income statement, as required by IAS 39 (Financial instruments: recognition and measurement).

Impairment losses recognized on other investments classified as “available-for-sale financial assets” are not reversed.

Changes in the value of other investments classified as “financial assets at fair value through profit or loss” are recognized directly in the separate consolidated income statement.

Securities other than investments

Securities other than investments classified as non-current assets are those held to maturity. The assets are recorded on the trade date and, on initial recognition, are stated at acquisition cost, including transaction costs, and subsequently measured at amortized cost.

Amortized cost represents the initial cost of the financial instrument net of principal repayments received, adjusted (up or down) by the amortization of any differences between the initial amount and the maturity amount using the effective interest method, less any write-down for impairment or uncollectibility, if any.

Securities other than investments classified as current assets are those that, by decision of the directors, are intended to be kept in the Group’s portfolio for a period of not more than 12 months, and are included in the following categories:

· held to maturity (originally more than 3 months but less than 12 months, or, with an original maturity of more than 12 months but the remaining maturity at the date of purchase is more than 3 months but less than 12 months) and measured at amortized cost;

· held for trading and measured at fair value through profit or loss;

· available-for-sale and measured at fair value with a contra-entry to an equity reserve (Reserve for available-for-sale financial assets) which is reversed to the separate consolidated income statement when the financial asset is disposed of or impaired.

When the conditions that gave rise to impairment losses on securities other than investments held to maturity or classified as “available-for-sale financial assets” no longer exist, the impairment losses are reversed.

Receivables and loans

Receivables and loans classified as either non-current or current assets are initially recognized at fair value and subsequently measured at amortized cost.

Cash and cash equivalents

Cash and cash equivalents are recorded, according to their nature, at nominal value or amortized cost.

Cash equivalents are short-term and highly liquid investments that are readily convertible to known amounts of cash, subject to an insignificant risk of change in value and their original maturity or the remaining maturity at the date of purchase does not exceed 3 months.

Impairment of financial assets

At every closing date, assessments are made as to whether there is any objective evidence that a financial asset or a group of financial assets may be impaired. If any such evidence exists, an impairment loss is recognized in the separate consolidated income statement for financial assets measured at cost or amortized cost; for “available-for-sale financial assets” reference should be made to the accounting policy described above.

Financial liabilities

Financial liabilities comprise financial debt, including advances received on the assignment of accounts receivable, and other financial liabilities such as derivatives and finance lease obligations.

In accordance with IAS 39, they also include trade and other payables.

Financial liabilities other than derivatives are initially recognized at fair value and subsequently measured at amortized cost.

Financial liabilities hedged by derivative instruments designed to manage exposure to changes in fair value of the liabilities (fair value hedge derivatives) are measured at fair value in accordance with the hedge accounting principles of IAS 39. Gains and losses arising from re-measurement at fair value, to the extent of the hedged component, are recognized in the separate consolidated income statement and are offset by the effective portion of the gain or loss arising from re-measurement at fair value of the hedging instrument.

Financial liabilities hedged by derivative instruments designed to manage exposure to variability in cash flows (cash flow hedge derivatives) are measured at amortized cost in accordance with the hedge accounting principles of IAS 39.

Derivatives

Derivatives are used by the TIM Group to manage its exposure to exchange rate and interest rate risks and to diversify the parameters of debt so that costs and volatility can be reduced to within pre-established operational limits.

In accordance with IAS 39, derivative financial instruments qualify for hedge accounting only when:

a) at the inception of the hedge, the hedging relationship is formally designated and documented;

b) the hedge is expected to be highly effective;

c) its effectiveness can be reliably measured;

d) the hedge is highly effective throughout the financial reporting periods for which it is designated.

All derivative financial instruments are measured at fair value in accordance with IAS 39.

When derivative financial instruments qualify for hedge accounting, the following accounting treatment applies:

· Fair value hedge—Where a derivative financial instrument is designated as a hedge of the exposure to changes in fair value of an asset or liability due to a particular risk, the gain or loss from re-measuring the hedging instrument at fair value is recognized in the separate consolidated income statement. The gain or loss on the hedged item attributable to the hedged risk adjusts the carrying amount of the hedged item and is recognized in the separate consolidated income statement.

· Cash flow hedge—Where a derivative financial instrument is designated as a hedge of the exposure to variability in cash flows of an asset or liability or a highly probable forecasted transaction, the effective portion of any gain or loss on the derivative financial instrument is recognized directly in a specific equity reserve (Reserve for hedging instruments). The cumulative gain or loss is removed from equity and recognized in the separate consolidated income statement at the same time the hedged transaction affects the separate consolidated income statement. The gain or loss associated with the ineffective portion of a hedge is recognized in the separate consolidated income statement immediately. If the hedged transaction is no longer probable, the cumulative gains or losses included in the equity reserve are immediately recognized in the separate consolidated income statement.

If hedge accounting is not appropriate, gains or losses arising from the measurement of the fair value of derivative financial instruments are directly recognized in the separate consolidated income statement.

Sales of receivables

Sales of receivables

The TIM Group carries out sales of receivables under factoring arrangements. These sales, in the majority of cases, are characterized by the transfer of substantially all the risks and rewards of ownership of the receivables to third parties, meeting IFRS requirements for derecognition. Specific servicing contracts, through which the buyer confers a mandate to TIM S.p.A. for the collection and management of the receivables, leave the current Company/customer relationship unaffected.

Amounts due from customers on construction contracts

Amounts due from customers on construction contracts

Amounts due from customers on construction contracts, regardless of the duration of the contracts, are recognized in accordance with the percentage of completion method and classified under current assets.

Losses on such contracts, if any, are recorded in full in the separate consolidated income statement when they become known.

Non-current assets held for sale/Discontinued operations

Non-current assets held for sale/Discontinued operations

Non-current assets held for sale (or disposal groups) whose carrying amount will mainly be recovered through sale, rather than through ongoing use, are classified as held for sale and shown separately in the consolidated statement of financial position from other assets and liabilities. The corresponding statement of financial position amounts for the previous year are not reclassified in the consolidated statement of financial position but are instead shown separately in a specific column in the changes in assets and liabilities in the year in which the non-current assets held for sale or the disposal groups are classified as such. An operating asset sold (Discontinued Operations) is a component of an entity that has been disposed of or classified as held for sale and:

· represents a major line of business or geographical area of operations;

· is part of a single coordinated plan to dispose of a separate major line of business or geographical area of operations; or

· is a subsidiary acquired exclusively with a view to resale.

The results arising from Discontinued Operations—whether disposed of or classified as held for sale—are shown separately in the separate consolidated income statement, net of tax effects. The corresponding values for the previous years, where present, are reclassified and reported separately in the separate consolidated income statement, net of tax effects, for comparative purposes.

Non-current assets held for sale (or disposal groups) classified as held for sale are first recognized in compliance with the appropriate IFRS applicable to the specific assets and liabilities and subsequently measured at the lower of the carrying amount and fair value, less costs to sell. Any subsequent impairment losses are recognized as a direct adjustment to the non-current assets (or disposal groups) classified as held for sale and expensed in the separate consolidated income statement.

An entity shall recognize a gain for any subsequent increase in fair value less costs to sell of an asset, but not in excess of the cumulative impairment loss that has been recognized.

As required by IFRS 5 (Non-current assets held for sale and discontinued operations), an entity shall not depreciate (or amortize) a non-current asset while it is classified as held for sale or while it is part of a disposal group classified as held for sale.

Interest and other expenses attributable to the liabilities of a disposal group classified as held for sale shall continue to be recognized.

Inventories

Inventories

Inventories are measured at the lower of purchase and/or production cost and estimated realizable value; cost is determined on a weighted average basis. Provision is made for obsolete and slow-moving inventories based on their expected future use and estimated realizable value.

Employee Benefits

Employee benefits

Provision for employee severance indemnity

Employee severance indemnity, mandatory for Italian companies pursuant to Article 2120 of the Italian Civil Code, is a deferred compensation and is based on the employees’ years of service and the compensation earned by the employee during the service period.

Under IAS 19 (Employee Benefits), the employee severance indemnity as calculated is considered a “Defined benefit plan” and the related liability recognized in the statement of financial position (Provision for employee severance indemnities) is determined by actuarial calculations.

The remeasurements of actuarial gains and losses are recognized in other components of other comprehensive income. Service cost of Italian companies that employ less than 50 employees, as well as interest expenses related to the “time value” component of the actuarial calculations (the latter classified as Finance expenses), are recognized in the separate consolidated income statement.

Starting from January 1, 2007, Italian Law introduced for employees the choice to direct their accruing indemnity either to supplementary pension funds or leave the indemnity as an obligation of the Company. Companies that employ at least 50 employees should transfer the employee severance indemnity to the “Treasury fund” managed by INPS, the Italian Social Security Institute.

Consequently, the Group’s obligation to INPS and the contributions to supplementary pension funds take the form, under IAS 19, of a “Defined contribution plan”.

Equity compensation plans

The companies of the Group provide additional benefits to certain managers of the Group through equity compensation plans (i.e., stock options and long-term incentive plans). The above plans are recognized in accordance with IFRS 2 (Share-Based Payment).

In accordance with IFRS 2, such plans represent a component of the beneficiaries’ compensation. Therefore, for the plans that provide for compensation in equity instruments, the cost is represented by the fair value of such instruments at the grant date, and is recognized in the separate consolidated income statement in “Employee benefits expenses” over the period between the grant date and vesting date with a contra-entry to an equity reserve denominated “Other equity instruments”. Changes in the fair value subsequent to the grant date do not affect the initial measurement. At the end of each year, adjustments are made to the estimate of the number of rights that will vest up to expiry. The impact of the change in estimate is deducted from “Other equity instruments” with a contra-entry to “Employee benefits expenses”.

For the portion of the plans that provide for the payment of compensation in cash, the amount is recognized in liabilities as a contra-entry to “Employee benefits expenses”; at the end of each year such liability is measured at fair value.

Provisions

Provisions

The Group records provisions for risks and charges when it has a present obligation, legal or constructive, to a third party, as a result of a past event, when it is probable that an outflow of Group resources will be required to satisfy the obligation and when the amount of the obligation can be estimated reliably.

If the effect of the time value is material, and the payment date of the obligations can be reasonably estimated, provisions to be accrued are the present value of the expected cash flows, taking into account the risks associated with the obligation. The increase in the provision due to the passage of time is recognized as “Finance expenses”.

Government grants

Government grants

Government grants are not recognized until there is reasonable assurance that the Group will comply with the conditions set by the Government, governmental and similar local, national or international bodies, for their disbursement.

Government grants are recognized in the Separate income statement on a systematic basis over the years in which the Group recognizes as expenses the related costs that the grants are intended to compensate.

Government grants related to assets received for the acquisition and /or construction of non-current tangible assets are recorded as deferred income in the Statement of financial position and credited to the Separate income statement on a systematic basis over the useful life of the facilities to which the grants relate.

Treasury shares

Treasury shares

Treasury shares are recognized as a deduction from equity. In particular, the treasury shares are reported as a deduction from the share capital issued in the amount corresponding to the “accounting par value”, that is the ratio of total share capital and the number of issued shares, while the excess cost of acquisition over the accounting par value is presented as a deduction from “Other reserves and retained earnings (accumulated losses), including profit (loss) for the year”.

Foreign currency transactions

Foreign currency transactions

Transactions in foreign currencies are recorded at the foreign exchange rate prevailing at the date of the transaction. Monetary assets and liabilities denominated in foreign currencies are converted at the foreign exchange rate prevailing at the statement of financial position date. Exchange differences arising from the settlement of monetary items or from their conversion at rates different from those at which they were initially recorded during the year or at the end of the prior year, are recognized in the separate consolidated income statement.

Revenues

Revenues

Revenues are the gross inflows of economic benefits during the period arising in the course of the ordinary activities of an entity. Amounts collected on behalf of third parties such as sales taxes, goods and services taxes and value added taxes are not economic benefits which flow to the entity and do not result in increases in equity. Therefore, they are excluded from revenues.

Revenues are recognized to the extent that it is probable that economic benefits will flow to the Group and their amount can be measured reliably. Revenues are stated net of discounts, allowances, and returns.

· Revenues from services rendered

Revenues from services rendered are recognized in the separate consolidated income statement according to the stage of completion of the service and only when the outcome of the service rendered can be estimated reliably.

Traffic revenues from interconnection and roaming are reported gross of the amounts due to other TLC operators.

Revenues for delivering information or other content are recognized on the basis of the amount invoiced to the customer, when the service is rendered directly by the Group. In the event that the Group is acting as agent (for example non-geographic numbers) only the commission received from the content provider is recognized as revenue.

Revenues from the activation of telephone services (and related costs) are deferred over the expected duration of the relationship with the customer (in Italy, generally 8 years for retail customers and 3 years for wholesale customers). In particular, costs from the activation of telephone services are deferred taking also into account the reasonable expectations of cash flows arising from these services.

Revenues from prepaid customers are recorded on the basis of the traffic used. Deferred revenues for unused traffic are recorded in “Trade and miscellaneous payables and other current liabilities” in the consolidated statement of financial position.

· Revenues from sales and bundled offerings

Revenues from sales (telephone and other equipment) are recognized when the significant risks and rewards of ownership are transferred to the buyer.

For offerings which include the sale of mobile handsets and service contracts, the TIM Group recognizes revenues related to the sale of the handset when it is delivered to the final customer whereas traffic revenues are recorded on the basis of the traffic used; the related subscriber acquisition costs, including sales commissions, are expensed as incurred. The revenues allocated to the handset sale are limited to the contract amount that is not contingent upon the rendering of telecommunication services, i.e. the residual of the amount paid by the customer exceeding the services value.

A small portion of the bundled mobile offerings involve contracts with a minimum contractual period between 12 and 36 months which include an enforced termination penalty. For these contracts, the subscriber acquisition costs are capitalized under “Intangible assets with a finite useful life” if the conditions for capitalization as described in the related accounting policy are met.

· Revenues on construction contracts

Revenues on construction contracts are recognized based on the stage of completion (percentage of completion method).

Research costs and advertising expenses

Research costs and advertising expenses

Research costs and advertising expenses are charged directly to the separate consolidated income statement in the year in which they are incurred.

Finance income and expenses

Finance income and expenses

Finance income and expenses are recognized on an accrual basis and include: interest accrued on the related financial assets and liabilities using the effective interest rate method, the changes in fair value of derivatives and other financial instruments measured at fair value through profit or loss, gains and losses on foreign exchange and financial instruments (including derivatives).

Dividends

Dividends

Dividends received from companies other than subsidiaries, associates and joint ventures are recognized in the separate consolidated income statement in the year in which they become receivable following the resolution by the shareholders’ meeting for the distribution of dividends of the investee companies.

Dividends payable to third parties are reported as a change in equity in the year in which they are approved by the shareholders’ meeting.

Income Taxes (current and deferred)

Income Taxes (current and deferred)

Income taxes include all taxes calculated on the basis of the taxable income of the companies of the Group.

Income taxes are recognized in the separate consolidated income statement, except to the extent that they relate to items directly charged or credited to equity, in which case the related tax is recognized in the relevant equity reserves. In the Statement of comprehensive income the amount of income taxes relating to each item included as “Other components of the Statement of comprehensive income” is indicated.

The income tax expense that could arise on the remittance of a subsidiary’s retained earnings is only recognized where there is the actual intention to remit such earnings.

Deferred tax liabilities / assets are recognized using the “Balance sheet liability method”. They are calculated on all temporary differences that arise between the tax base of an asset or liability and the carrying amounts in the consolidated financial statements, except for non-tax-deductible goodwill and for those differences related to investments in subsidiaries which will not reverse in the foreseeable future. Deferred tax assets relating to unused tax loss carryforwards are recognized to the extent that it is probable that future taxable income will be available against which they can be utilized. Current and deferred tax assets and liabilities are offset when the income taxes are levied by the same tax authority and there is a legally enforceable right of offset. Deferred tax assets and liabilities are determined based on enacted tax rates in the respective jurisdictions in which the Group operates that are expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled.

Taxes, other than income taxes, are included in “Other operating expenses”.

Earnings Per Share

Earnings per share

Basic earnings per ordinary share is calculated by dividing the Group’s profit attributable to ordinary shares by the weighted average number of ordinary shares outstanding during the year, excluding treasury shares. Similarly, basic earnings per savings share is calculated by dividing the Group’s profit attributable to savings shares by the weighted average number of savings shares outstanding during the year.

For diluted earnings per ordinary share, the weighted average number of shares outstanding during the year is adjusted by all dilutive potential shares (for example, the exercise of rights on shares with dilutive effects). The Group profit is also adjusted to reflect the impact of these transactions net of the related tax effects.

Use of estimates

Use of estimates

The preparation of consolidated financial statements and related disclosure in conformity with IFRS requires management to make estimates and assumptions based also on subjective judgments, past experience and hypotheses considered reasonable and realistic in relation to the information known at the time of the estimate. Such estimates have an effect on the reported amount of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements as well as the amount of revenues and costs during the year. Actual results could differ, even significantly, from those estimates owing to possible changes in the factors considered in the determination of such estimates. Estimates are reviewed periodically.

The most important accounting estimates which require a high degree of subjective assumptions and judgments are addressed below:

Financial statement line item/area	Accounting estimates
Impairment of goodwill	The impairment test on goodwill is carried out by comparing the carrying amount of cash-generating units and their recoverable amount. The recoverable amount of a cash-generating unit is the higher of fair value, less costs to sell, and its value in use. This complex valuation process entails the use of methods such as the discounted cash flow method which uses assumptions to estimate cash flows. The recoverable amount depends significantly on the discount rate used in the discounted cash flow model as well as the expected future cash flows and the growth rate used for the extrapolation. The key assumptions used to determine the recoverable amount for the different cash generating units, including a sensitivity analysis, are detailed in the Note “Goodwill”.
Impairment of tangible and intangible assets with a finite useful life	At every closing date, the Group assesses whether there are any indications of impairment of tangible and intangible assets with a finite useful life. Both internal and external sources of information are used for this purpose. The identification of impairment indicators, the estimation of future cash flows and the determination of the fair value of each asset require management to make significant judgments including the applicable discount rate, useful life and residual value. These estimates can have a material impact on fair value and the amount of any write-downs.
Business combinations	The recognition of business combinations requires that assets and liabilities of the acquiree be recorded at their fair value at the acquisition date of control, as well as the possible recognition of goodwill, through the use of a complex process in determining such values.
Capitalization / deferral of costs	The capitalization / deferral process of internal and external costs involves some areas of Management judgement among which there are the assessment of: i) the probability that the amount of the capitalized / deferred costs will be recovered through the associated future revenues; and ii) the actual increase in future economic benefits of the asset to which they refer.
Bad debt provision	The recoverability of receivables is measured by considering the uncollectibility of receivables, their age and losses on receivables recognized in the past by type of similar receivables.
Depreciation and amortization expense	Changes in the economic conditions of the markets, technology and competitive forces could significantly affect the estimated useful lives of tangible and intangible non-current assets and may lead to a difference in the timing and amount of depreciation and amortization expense.
Accruals, contingent liabilities and employee benefits	With respect to provisions for restoration costs the estimate of future costs to dismantle tangible assets and restore the site is a complex process that requires an assessment of the liability arising from such obligations which seldom are entirely defined by law, administrative regulations or contract clauses and which normally are to be complied with after an interval of several years. The accruals related to legal, arbitration and fiscal disputes are the result of a complex estimation process based upon the probability of an unfavorable outcome. Employee benefits, especially the provision for employee severance indemnities, are calculated using actuarial assumptions; changes in such assumptions could have a material impact on such liabilities.
Revenues	Revenue recognition is influenced by: ·   the expected duration of the relationship with the customer for revenues from telephone service activations (as well as the related costs); ·   the estimate of the amount of discounts, allowances and returns to be recorded as a direct deduction from revenues.
Income taxes (current and deferred)	Income taxes (current and deferred) are calculated in each country in which the Group operates according to a prudent interpretation of the tax laws in effect. This process sometimes involves complex estimates to determine taxable income and deductible and taxable temporary differences between the carrying amounts and the taxable amounts. In particular, deferred tax assets are recognized to the extent that future taxable income will be available against which they can be utilized. The measurement of the recoverability of deferred tax assets, recognized based on both unused tax loss carryforwards to future years and deductible differences, takes into account the estimate of future taxable income and is based on conservative tax planning.
Derivative instruments and equity instruments	The fair value of derivative instruments and equity instruments is determined both using valuation models which also take into account subjective measurements such as, for example, cash flow estimates, expected volatility of prices, etc., or on the basis of either prices in regulated markets or quoted prices provided by financial counterparts. For further details please see also Note “Supplementary disclosures on financial instruments”.

As required by IAS 8 (Accounting Policies, Changes in Accounting Estimates and Errors) par. 10, in the absence of a Standard or an Interpretation that specifically applies to a particular transaction, management carefully considers subjective valuation techniques and uses its judgment as to the accounting methods to adopt with a view to providing financial statements which faithfully represent the financial position, the results of operations and the cash flows of the Group, which reflect the economic substance of the transactions, are neutral, prepared on a prudent basis and complete in all material respects.

New Standards and Interpretations issued by IASB and in force from January 1, 2017

New Standards and Interpretations issued by IASB and in force from January 1, 2017

In accordance with IAS 8 (Accounting Policies, Changes in Accounting Estimates and Errors) the IFRS in force starting from January 1, 2017 are indicated and briefly described below.

Amendments to IAS 12 (Income Taxes)—Recognition of deferred tax assets for unrealized losses

In January 2016, IASB issued some amendments to IAS 12 in order to clarify the recognition of deferred tax assets on unrealized losses related to the measurement of debt instruments at fair value.

The adoption of these amendments had no impact on the consolidated financial statements at December 31, 2017.

Amendments to IAS 7 (Statement of cash flows)—Disclosure initiative

In January 2016, IASB issued some amendments to IAS 7 (Statement of cash flows). Such amendments are intended to supply additional disclosures in order to enable the financial statement users to evaluate changes (cash and non-cash flows) of liabilities arising from financing activities, showing the reconciliation between opening and closing balance of such liabilities:

· changes from financing cash flows;

· changes arising from obtaining or losing control of subsidiaries or other businesses;

· the effect of changes in foreign exchange rates;

· changes in fair values; and

· other changes.

The adoption of these amendments impacted only the consolidated financial statement disclosure at December 31, 2017.

Improvements to IFRSs 2014–2016 Cycle—Amendments to IFRS 12

In December 2016 the IASB issued some improvements to IFRSs, for the 2014–2016 Cycle. In particular the amendments to IFRS 12—Disclosure of Interest in Other Entities clarify the scope of IFRS 12, specifying that the disclosure requirements in the standard apply to all entity’s interests that are classified as held for sale, as held for distribution or as discontinued operations in accordance with IFRS 5—Non-current Assets Held for Sale and Discontinued Operations.

The adoption of these amendments had no impact on the consolidated financial statements at December 31, 2017.

New Standards and Interpretations Issued by IASB Not Yet in Force

At the date of preparation of the accompanying consolidated financial statements, the following IFRS, Amendments and IFRIC interpretations had been published, but their application was not yet mandatory:

IASB/IFRIC documents	Mandatory application: annual periods beginning on or after
IFRS 15 (Revenue from Contracts with Customers)	January 1, 2018
Clarifications to IFRS 15 (Revenue from Contracts with Customers)	January 1, 2018
IFRS 9 (Financial Instruments)	January 1, 2018
IFRS 16 (Leases)	January 1, 2019
Improvements to IFRSs (2014–2016 Cycle)—Amendments to IAS 28	January 1, 2018
Amendments to IFRS 2 (Share based Payment)	January 1, 2018
IFRIC 22 (Foreign Currency Transactions and Advance Consideration)	January 1, 2018
Amendments to IAS 40 (Transfers of Investment Property)	January 1, 2018
IFRIC 23 (Uncertainty over income tax treatments)	January 1, 2019
Amendments to IFRS 9: Prepayment features with negative compensation	January 1, 2019
Amendments to IAS 28: Long-term interests in Investments in associates and joint ventures	January 1, 2019
Improvements to IFRSs (2015–2017 Cycle)	January 1, 2019
Amendments to IAS 19: Plan Amendment, Curtailment or Settlement	January 1, 2019
IFRS 17: Insurance contracts	January 1, 2021

IFRS 15 (Revenues from contracts with customers)

IFRS 15 (Clarifications to such standard included) will replace the standards that currently govern revenue recognition, namely IAS 18 (Revenue), IAS 11 (Construction contracts) and the related interpretations on revenue recognition (IFRIC 13 Customer loyalty programmes, IFRIC 15 Agreements for the construction of real estate, IFRIC 18 Transfers of assets from customers and SIC 31 Revenue—Barter transactions involving advertising services).

IFRS 15 is applied retrospectively starting from January 1, 2018. The TIM Group will apply the modified retrospective approach with the cumulative effect of the first-time adoption of the standard as an adjustment to the opening shareholders’ equity leaving the previous comparative periods unchanged.

At the TIM Group level, IFRS 15 impacts the revenue recognition of fixed and mobile offerings as well as the recognition of contractual costs. There are no impacts on cash flows. The main differences with respect to the current accounting principles are as follows:

· bundled offerings (package of goods and services): the allocation of the contractual discount to the performance obligations involves an anticipation in the recognition of revenues with the consequent recording of a contract asset;

· activation/installation revenues: under current accounting principles, they are deferred over the expected term of the customer relationship; under IFRS 15, these kinds of revenue, not being related to separate performance obligations, shall be allocated to the various contractual obligations with a consequent anticipation in the recognition of revenue;

· contract costs (costs of obtaining a contract and costs of fulfilling a contract): under current accounting principles, they are, for the majority, already capitalized/deferred and charged to the separate income statement on the basis of the expected term of the customer relationship as well as of the kind of customers and taking into account the matching principle. With the adoption of IFRS 15, this approach will be substantially confirmed. Based on the analyses carried out, however, some impacts are expected, in particular in relation to:

· definition of kinds of deferrable costs which will be revised in order to exclude costs, if any, that don’t meet the requirements of paragraph 97 of IFRS 15;

· the portion of costs of obtaining a contract that under current accounting standards is capitalized (Intangible assets with a finite useful life) and amortized, under IFRS 15 will be reclassified to prepaid expenses involving lower amortization costs and higher costs for services, without any impact on the shareholders’ equity and profit (loss) before tax at the transition date.

TIM Group expects that the adoption of the new standard will have an overall non-significant net impact on shareholders’ equity at January 1, 2018 (transition date) arising from the combined effect of:

· recording of the contract asset associated with the early recognition of revenue for bundle offerings and new accounting model of activation/installation revenues with an overall increase in the shareholders’ equity;

· revision of deferrable contractual costs with a negative impact on shareholders’ equity.

A precise and accurate estimate of the impacts on shareholders’ equity at the transition date is currently being defined. Such impacts are not indicative of future developments, as the business model and the marketing and contractual policies with the customers could change with consequent impacts on revenues and related costs.

The process of implementing the new accounting principle has involved significant updates and changes on IT systems, modification and updating of control and compliance models and related processes.

IFRS 9 (Financial Instruments)

IFRS 9 sets out the principles for the classification, measurement and derecognition of financial assets and liabilities, the impairment of financial instruments as well as hedge accounting.

IFRS 9 is applied starting from January 1, 2018. TIM Group has decided to apply the following:

· to defer the application of the hedge accounting model under IFRS 9 and to continue the adoption of the IAS 39 model;

· not to restate the comparative periods in the year of initial application of the new standard.

At the TIM Group level, IFRS 9 mainly impacts the determination of expected losses on trade receivables and other financial assets (change from the incurred loss model provided for by IAS 39 to the expected credit loss model).

TIM Group expects that the adoption of the new standard will have a non-significant negative impact on shareholders’ equity at the transition date, mainly due to higher impairment losses on trade receivables and other financial assets.

A precise and accurate estimate of the impacts on shareholders’ equity at the transition date is currently being defined. Such impacts are not indicative of future developments, as the business model and the contractual policies could change with consequent impacts on the financial statements.

The process of implementing the new accounting principle has involved significant updates and changes on IT systems, modification and updating of control and compliance models and related processes.

IFRS 16 (Leases)

IFRS 16 supersedes IAS 17 (Leases) and the related interpretations (IFRIC 4 Determining whether an arrangement contains a lease; SIC 15 Operating leases—Incentives; SIC 27 Evaluating the substance of transactions involving the legal form of a lease).

For passive lease contracts that meet the requirements of the new standard (which does not distinguish between operating and finance leases), IFRS 16 provides for the recording of a liability in the statement of financial position, equal to the present value of future lease payments, and a correspondent right-of-use asset.

IFRS 16 is applied retrospectively starting from January 1, 2019; TIM Group intends to apply the simplified retrospective approach with the recording, for leases previously classified—under IAS 17— as operating leases, of the lease liability and the corresponding right-of-use asset measured at the present value of the remaining lease payments at the transition date.

The main impacts on the TIM Group consolidated financial statements, still under evaluation, are detailed as follows:

· statement of financial position: higher non-current assets due to the recording of the “right-of-use assets” against higher financial lease liabilities;

· separate income statement: different nature, qualification and classification of expenses (amortisation of the “right-of-use assets” and “finance expenses for interest” instead of “Rent and leases—fees for operating leases”, as per IAS 17) with a consequent positive impact on operating profitability. Furthermore, the combination of the straight-line amortisation of the “right-of-use asset” and the effective interest rate method applied to the lease payables entail, compared to IAS 17, higher expenses in the income statement in the first years of the lease contract and decreasing costs in the last years.

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Scope of Consolidation (Tables)

12 Months Ended

Dec. 31, 2017

Summary of Subsidiaries Entering/ Exiting/ Merged in to the Scope of Consolidation

Subsidiaries exiting/merged into the scope of consolidation:

Company		Business Unit	Month
Exit:
TIERRA ARGENTEA S.A.	Liquidated	Other Operations		May 2017
TELECOM ITALIA FINANCE IRELAND Limited	Liquidated	Other Operations		October 2017
Merger:
BEIGUA S.r.l.	Merged into Persidera S.p.A.	Domestic		July 2017
TI SPARKLE IRELAND TELECOMMUNICATIONS Limited	Merged into Telecom Italia Sparkle S.p.A.	Domestic		July 2017
OLIVETTI MULTISERVICES S.p.A.	Merged into TIM S.p.A.	Domestic		October 2017
TIM REAL ESTATE S.r.l.	Merged into TIM S.p.A.	Domestic		October 2017
TMI TELEMEDIA INTERNATIONAL DO BRASIL LTDA	Merged into TI Sparkle Brasil Participações Ltda	Domestic		October 2017

Summary of Breakdown by Number of Subsidiaries and Associates

The breakdown by number of subsidiaries and associates of the TIM Group is as follows:

	As of December 31, 2017
Companies	Italy		Outside Italy		Total
subsidiaries consolidated line-by-line		22		44		66
joint ventures accounted for using the equity method		1		—		1
associates accounted for using the equity method		19		—		19
Total companies		42		44		86

	As of December 31, 2016
Companies	Italy		Outside Italy		Total
subsidiaries consolidated line-by-line		25		48		73
joint ventures accounted for using the equity method		1		—		1
associates accounted for using the equity method		19		—		19
Total companies		45		48		93

Income Statement [member] | Tim Brazil Group [member]

Summary of Statement of Financial Statement - TIM Brasil Group-Brazil Business Unit

Income Statement Data—TIM Brasil group

	Year ended December 31,
	2017		2016		2015
	(millions of euros)
Revenues		4,502		4,047		4,637
Profit (loss) for the year		340		194		324
of which Non-controlling interests		114		65		188

Consolidated statement of financial position [Member] | Tim Brazil Group [member]

Summary of Statement of Financial Statement - TIM Brasil Group-Brazil Business Unit

Statement of Financial Position Data—TIM Brasil group

	Year ended December 31,
	2017		2016
	(millions of euros)
Non-current assets		6,819		7,822
Current assets		1,929		2,956
Total Assets		8,748		10,778
Non-current liabilities		1,703		2,726
Current liabilities		1,852		2,331
Total Liabilities		3,555		5,057
Equity		5,193		5,721
of which Non-controlling interests		1,556		1,705

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Goodwill (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Summary of Breakdown and Changes in Goodwill

Goodwill shows the following breakdown and changes during 2016 and 2017:

	As of December 31, 2015		Reclassification			Increase		Decrease		Impairments		Exchange differences		As of December 31, 2016
	(millions of euros)
Domestic		28,447		29			13								28,489
Core Domestic		28,035		29			13								28,077
International Wholesale		412													412
Brazil		907											216		1,123
Media		29		(29	)										—
Other operations		—													—
Total		29,383		—			13		—		—		216		29,612

	As of December 31, 2016		Reclassification		Increase		Decrease		Impairments		Exchange differences			As of December 31, 2017
	(millions of euros)
Domestic		28,489													28,489
Core Domestic		28,077													28,077
International Wholesale		412													412
Brazil		1,123										(150	)		973
Other operations		—													—
Total		29,612		—		—		—		—		(150	)		29,462

Summary of Gross Carrying Amounts, Accumulated Impairment Losses (Details)

The gross carrying amounts of goodwill and the relative accumulated impairment losses from January 1, 2004 (date of allocation to the Cash Generating Units—CGUs) to December 31, 2017 and 2016 can be summarized as follows:

	As of December 31, 2017							As of December 31, 2016
	Gross carrying amount		Accumulated impairment losses			Net carrying amount		Gross carrying amount		Accumulated impairment losses			Net carrying amount
	(millions of euros)
Domestic		42,457		(13,968	)		28,489		42,457		(13,968	)		28,489
Core Domestic		42,045		(13,968	)		28,077		42,045		(13,968	)		28,077
International Wholesale		412		—			412		412		—			412
Brazil		1,204		(231	)		973		1,389		(266	)		1,123
Other operations		—		—			—		—		—			—
Total		43,661		(14,199	)		29,462		43,846		(14,234	)		29,612

Summary of Principal Parameters for Estimates of Value in Use (Details)

Principal parameters for the estimates of value in use

	Core Domestic		International Wholesale
	%		%
WACC		6.39		6.39
WACC before tax		8.52		8.31
Growth rate beyond the explicit period (g)		0.50		0.50
Capitalization rate (WACC -g )		8.02		7.81
Capex/Revenues, % perpetual		19.26		5.86

Summary of Differences Between Values in Use and Carrying Amounts (Details)

The difference between the recoverable amounts and the net carrying amounts of the main CGUs considered totaled:

	Core Domestic		International Wholesale		Brazil
	(millions of euros)
Difference between values in use and carrying amounts		+4,465		+56		+2,552

Summary of Parameters that Make Value in Use Equal to Carrying Amount (Details)

Parameters that make the value in use equal to the carrying amount

	Core Domestic		International Wholesale		Brazil
	%		%		%
WACC before tax		9.26		8.70
Capitalization rate (WACC - g)		8.76		8.20
Capex/Revenues, % on TV		23.08		6.34
Percentage change in the stock market price						(32.00	)

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Intangible Assets with a Finite Useful Life (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Summary of Breakdown and Movements in Intangible Assets

 The breakdown and movements are as follows:

	As of December 31, 2015		Addition		Amortization			Impairment losses / Reversals			Disposals			Exchange Differences			Capitalized borrowing costs		Other changes			As of December 31, 2016
	(millions of euros)
Industrial patents and intellectual property rights		2,070		990		(1,243	)								206					435			2,458
Concessions, licenses, trademarks and similar rights		2,829		87		(393	)								89					242			2,854
Other intangible assets		83		128		(107	)								5								109
Work in progress and advance payments		1,498		436								(2	)		198			73		(673	)		1,530
Total		6,480		1,641		(1,743	)		—			(2	)		498			73		4			6,951
	As of December 31, 2016		Addition		Amortization			Impairment losses / Reversals			Disposals			Exchange Differences			Capitalized borrowing costs		Other changes			As of December 31, 2017
	(millions of euros)
Industrial patents and intellectual property rights		2,458		771		(1,263	)								(147	)				374			2,193
Concessions, licenses, trademarks and similar rights		2,854		140		(396	)								(96	)				248			2,750
Other intangible assets		109		157		(134	)								(5	)				7			134
Work in progress and advance payments		1,530		1,224					(30	)					(143	)		73		(539	)		2,115
Total		6,951		2,292		(1,793	)		(30	)		—			(391	)		73		90			7,192

Summary of Net Carrying Amount of Telephone Licenses and Similar Rights and their Useful Lives

The net carrying amount of telephone licenses and similar rights (2,153 million euros) and their useful lives are detailed below:

Type of license	Net carrying amount at December 31, 2017 (millions of euros)		Amortization period (years)		Amortization charge for 2017 (millions of euros)
TIM S.p.A.:
UMTS		537		18		134
UMTS 2100 MHz		30		12		7
WiMax		5		15		1
LTE 1800 MHz		103		18		9
LTE 800 MHz		720		17		60
LTE 2600 MHz		79		17		7
GSM (extension)		17		3		34
Band 1452-1492 MHz		198		14		16
Tim Brasil group:
GSM and 3G (UMTS)		165		15		53
4G (LTE - 700 Mhz)		299		15		15

Summary of Gross Carrying Amount, Accumulated Impairment Losses and Accumulated Amortization

The gross carrying amount, accumulated impairment losses and accumulated amortization at December 31, 2017 and 2016 can be summarized as follows:

	As of December 31, 2016
	Gross carrying amount		Accumulated impairment losses			Accumulated amortization			Net carrying amount
	(millions of euros)
Industrial patents and intellectual property rights		12,241		(7	)		(9,776	)		2,458
Concessions, licenses, trademarks and similar rights		7,017		(306	)		(3,857	)		2,854
Other intangible assets		447					(338	)		109
Work in progress and advance payments		1,532		(2	)					1,530
Total intangible assets with a finite useful life		21,237		(315	)		(13,971	)		6,951

	As of December 31, 2017
	Gross carrying amount		Accumulated impairment losses			Accumulated amortization			Net carrying amount
	(millions of euros)
Industrial patents and intellectual property rights		12,266		(7	)		(10,066	)		2,193
Concessions, licenses, trademarks and similar rights		7,044		(273	)		(4,021	)		2,750
Other intangible assets		522					(388	)		134
Work in progress and advance payments		2,145		(30	)					2,115
Total intangible assets with a finite useful life		21,977		(310	)		(14,475	)		7,192

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Tangible Assets (Owned and Under Finance Leases) (Tables)

12 Months Ended

Dec. 31, 2017

Summary of Changes in Assets Held Under Finance Lease

The breakdown and movements are as follows:

	As of December 31, 2015		Addition		Depreciation			Impairment losses / Reversals			Disposals			Exchange Differences		Other changes			As of December 31, 2016
	(millions of euros)
Land		171		21					(2	)					2		11			203
Buildings (civil and industrial)		444		87		(48	)					(1	)		4		23			509
Plant and equipment		10,909		2,113		(2,170	)					(17	)		457		417			11,709
Manufacturing and distribution equipment		41		11		(15	)										1			38
Other		378		93		(157	)					(5	)		28		54			391
Construction in progress and advance payments		716		824					(1	)		(1	)		54		(495	)		1,097
Total		12,659		3,149		(2,390	)		(3	)		(24	)		545		11			13,947

	As of December 31, 2016		Addition		Depreciation			Impairment losses / Reversals			Disposals			Exchange Differences			Other changes			As of December 31, 2017
	(millions of euros)
Land		203		6											(2	)		6			213
Buildings (civil and industrial)		509		10		(39	)								(3	)		11			488
Plant and equipment		11,709		2,601		(2,286	)		(8	)		(8	)		(332	)		373			12,049
Manufacturing and distribution equipment		38		12		(16	)											2			36
Other		391		88		(159	)					(2	)		(18	)		76			376
Construction in progress and advance payments		1,097		541					1			(1	)		(41	)		(543	)		1,054
Total		13,947		3,258		(2,500	)		(7	)		(11	)		(396	)		(75	)		14,216

Summary of Depreciation on Straight-line Basis Over the Estimated Useful Life of Assets

Depreciation for the years 2017, 2016 and 2015 was calculated on a straight-line basis over the estimated useful lives of the assets according to the following minimum and maximum rates:

Buildings (civil and industrial)	2%-5.55%
Plant and equipment	3%-50%
Manufacturing and distribution equipment	20%
Other	10%-50%

Summary of Gross Carrying Amount, Accumulated Impairment Losses and Accumulated Depreciation

The gross carrying amount, accumulated impairment losses and accumulated depreciation at December 31, 2017 and 2016 can be summarized as follows:

	As of December 31, 2016
	Gross carrying amount		Accumulated impairment losses			Accumulated depreciation			Net carrying amount
	(millions of euros)
Land		207		(4	)					203
Buildings (civil and industrial)		1,705		(1	)		(1,195	)		509
Plant and equipment		69,372		(67	)		(57,596	)		11,709
Manufacturing and distribution equipment		304		(1	)		(265	)		38
Other		4,010		(2	)		(3,617	)		391
Construction in progress and advance payments		1,098		(1	)					1,097
Total		76,696		(76	)		(62,673	)		13,947

	As of December 31, 2017
	Gross carrying amount		Accumulated impairment losses			Accumulated depreciation			Net carrying amount
	(millions of euros)
Land		218		(5	)					213
Buildings (civil and industrial)		1,717					(1,229	)		488
Plant and equipment		68,964		(62	)		(56,853	)		12,049
Manufacturing and distribution equipment		310		(1	)		(273	)		36
Other		3,988		(2	)		(3,610	)		376
Construction in progress and advance payments		1,054								1,054
Total		76,251		(70	)		(61,965	)		14,216

Assets held under finance lease [member]

Summary of Changes in Assets Held Under Finance Lease

Assets held under finance lease decreased by 82 million euros compared to December 31, 2016. The breakdown and movements are as follows:

	As of December 31, 2015		Addition		Change in finance lease contracts		Depreciation			Exchange Differences		Other changes			As of December 31, 2016
	(millions of euros)
Land		16														16
Buildings (civil and industrial)		1,880		23		70		(125	)				(13	)		1,835
Plant and equipment		284				28		(17	)		69		1			365
Other		7				134		(16	)							125
Construction in progress and advance payments		21		63									(12	)		72
Total		2,208		86		232		(158	)		69		(24	)		2,413

	As of December 31, 2016		Addition		Change in finance lease contracts		Depreciation			Exchange differences			Other changes			As of December 31, 2017
	(millions of euros)
Land		16															16
Buildings (civil and industrial)		1,835		47		2		(130	)					14			1,768
Plant and equipment		365		72		14		(21	)		(43	)		(34	)		353
Other		125				52		(29	)		(1	)		(9	)		138
Construction in progress and advance payments		72		32										(48	)		56
Total		2,413		151		68		(180	)		(44	)		(77	)		2,331

Summary of Gross Carrying Amount, Accumulated Impairment Losses and Accumulated Depreciation

The gross carrying amount, accumulated impairment losses and accumulated depreciation at December 31, 2017 and 2016 can be summarized as follows:

	As of December 31, 2016
	Gross carrying amount		Accumulated impairment losses			Accumulated depreciation			Net carrying amount
	(millions of euros)
Land		16								16
Buildings (civil and industrial)		3,330		(27	)		(1,468	)		1,835
Plant and equipment		394					(29	)		365
Other		164					(39	)		125
Construction in progress and advance payments		72								72
Total		3,976		(27	)		(1,536	)		2,413

	As of December 31, 2017
	Gross carrying amount		Accumulated impairment losses			Accumulated depreciation			Net carrying amount
	(millions of euros)
Land		16								16
Buildings (civil and industrial)		3,391		(27	)		(1,596	)		1,768
Plant and equipment		397					(44	)		353
Other		200					(62	)		138
Construction in progress and advance payments		56								56
Total		4,060		(27	)		(1,702	)		2,331

Summsry of Finance Lease Payments Due in Future Years and Present Value

At December 31, 2017 and 2016, finance lease payments due in future years and their present value are as follows:

	As of December 31,
	2017				2016
	Minimum lease payments		Present value of minimum lease payments		Minimum lease payments		Present value of minimum lease payments
	(millions of euros)
Within 1 year		271		234		298		230
From 2 to 5 years		1,031		691		1,088		707
Beyond 5 years		2,878		1,391		3,123		1,539
Total		4,180		2,316		4,509		2,476

	As of December 31,
	2017			2016
	(millions of euros)
Future net minimum lease payments		4,180			4,509
Interest portion		(1,864	)		(2,033	)
Present value of lease payments		2,316			2,476
Financial lease liabilities		2,430			2,636
Financial receivables for lease contracts		(114	)		(160	)
Total net finance lease liabilities		2,316			2,476

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Investments (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Summary of Investments in Associates and Joint Ventures Accounted for Using Equity method

Investments in associates and joint ventures that have been accounted for using the equity method include:

	As of December 31,
	2017		2016
	(millions of euros)
Tiglio I		7		8
NordCom		5		5
W.A.Y.		3		3
Others		2		2
Total Associates		17		18
Alfiere		—		—
Total Joint Ventures		—		—
Total Investments accounted for using the equity method		17		18

Summary of Changes in Investments in Associates and Joint Ventures

The changes in this item are broken down as follows:

	As of December 31, 2015		Investments		Disposals and reimbursements of capital		Valuation using equity method			Other changes		As of December 31, 2016
	(millions of euros)
Tiglio I S.r.l		8											8
NordCom		4						1					5
W.A.Y.		3											3
Others		3						(1	)				2
Total Associates		18		—		—		—			—		18
Alfiere		23		—		—		(23	)		—		—
Total Joint Ventures		23		—		—		(23	)		—		—
Total Investments accounted for using the equity method		41		—		—		(23	)		—		18

	As of December 31, 2016		Investments		Disposals and reimbursements of capital		Valuation using equity method			Other changes		As of December 31, 2017
	(millions of euros)
Tiglio I S.r.l		8						(1	)				7
NordCom		5											5
W.A.Y.		3											3
Others		2											2
Total Associates		18		—		—		(1	)		—		17
Alfiere		—
Total Investments accounted for using the equity method		18		—		—		(1	)		—		17

Summary of Financial Statement in Joint Venture

The financial statements as at December 31, 2017 of Alfiere S.p.A. are currently not available. The main aggregated figures prepared in accordance with IFRS with respect to the portion attributable to the TIM Group show amounts referring the financial statements for 2016.

	2016
	Alfiere S.p.A.			TIM Group’s share 50%
	(millions of euros)
Non-current assets		157			78.5
Current assets		3			1.5
Total assets		160			80.0
Non-current liabilities		149			74.5
Current liabilities		15			7.5
Total liabilities		164			82.0
Equity		(4.0	)		(2.0	)
Total Equity and liabilities		160.0			80.0
Profit (loss) for the year		(46.0	)		(23.0	)

Summary of Other Investments

Other investments refer to the following:

	As of December 31, 2015		Investments		Disposals and reimbursements of capital			Measurement at fair value			Other changes		As of December 31, 2016
	(millions of euros)
Assicurazioni Generali		3							(1	)				2
Fin.Priv.		19							(2	)				17
Northgate Telecom Innovations Partners L.P.		9		5										14
Others		14				(1	)							13
Total		45		5		(1	)		(3	)		—		46

	As of December 31, 2016		Investments		Disposals and reimbursements of capital		Measurement at fair value		Other changes			As of December 31, 2017
	(millions of euros)
Assicurazioni Generali		2						1					3
Fin.Priv.		17						3					20
Northgate Comms Tech Innovations Partners L.P. (ex Northgate Telecom Innovations Partners L.P.)		14		3									17
Others		13								(2	)		11
Total		46		3		—		4		(2	)		51

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Financial Assets (Non-Current and Current) (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Financial Assets (Non-Current and Current)

Financial assets (non-current and current) were broken down as follows:

		As of December 31,
		2017		2016
		(millions of euros)
Non-current financial assets
Securities, financial receivables and other non-current financial assets:
Securities other than investments					1
Financial receivables for lease contracts			69		101
Hedging derivatives relating to hedged items classified as non-current assets/liabilities of a financial nature			1,495		2,497
Receivables from employees			47		48
Non-hedging derivatives			7		39
Other financial receivables			150		12
Total non-current financial assets	(A)		1,768		2,698
Current financial assets
Securities other than investments
Held for trading					140
Held to maturity
Available for sale			993		1,379
			993		1,519
Financial receivables and other current financial assets:
Liquid assets with banks, financial institutions and post offices (with a maturity greater than 3 months)			100		100
Receivables from employees			16		15
Financial receivables for lease contracts			45		59
Hedging derivatives relating to hedged items classified as current assets/liabilities of a financial nature			260		185
Non-hedging derivatives			15		28
Other short-term financial receivables			1		2
			437		389
Cash and cash equivalents			3,575		3,964
Total current financial assets	(B)		5,005		5,872
Financial assets relating to Discontinued operations/Non-current assets held for sale	(C)		—		—
Total non-current and current financial assets	(A+B+C)		6,773		8,570

Schedule of Decrease In Cash and Cash Equivalents

Cash and cash equivalents decreased by 389 million euros compared to December 31, 2016 and were broken down as follows:

	As of December 31,
	2017		2016
	(millions of euros)
Liquid assets with banks, financial institutions and post offices		2,828		2,491
Checks, cash and other receivables and deposits for cash flexibility		2		1
Securities other than investments (due within 3 months)		745		1,472
Total		3,575		3,964

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Miscellaneous Receivables and Other Non-Current Assets (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Schedule of Increase In Miscellaneous Receivables and Other Non-Current Assets

Miscellaneous receivables and other non-current assets increased by 200 million euros compared to December 31, 2016. They included:

	As of December 31,
	2017				2016
			Of which IAS 39 Financial Instruments				Of which IAS 39 Financial Instruments
	(millions of euros)
Miscellaneous receivables and other non-current assets:
Miscellaneous receivables		704		371		763		399
Medium/long-term prepaid expenses		1,718				1,459
Total		2,422		371		2,222		399

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Income Taxes (Current and Deferred) (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Schedule of Deferred Tax Assets and Deferred Tax Liabilities

The net balance of 728 million euros at December 31, 2017 (584 million euros at December 31, 2016) breaks down as follows.

	As of December 31,
	2017			2016
	(millions of euros)
Deferred tax assets		993			877
Deferred tax liabilities		(265	)		(293	)
Total		728			584

Schedule of Deferred Tax Assets and Deferred Tax Liabilities Before Offsets By Legal Entity

Since the presentation of deferred tax assets and liabilities in the financial statements takes into account the offsets by legal entity when applicable, the composition of the gross amounts before offsets is presented below:

	As of December 31,
	2017			2016
	(millions of euros)
Deferred tax assets		1,429			1,294
Deferred tax liabilities		(701	)		(710	)
Total		728			584

Schedule of Temporary Differences in Deferred Tax Assets and Deferred Tax Liabilities

The temporary differences which made up this line item at December 31, 2017 and 2016, as well as the movements during 2017 were as follows:

	As of December 31, 2016			Recognized in profit or loss			Recognized in equity			Change in scope of consolidation and other changes			As of December 31, 2017
	(millions of euros)
Deferred tax assets:
Tax loss carryforwards		72			(33	)					(7	)		32
Derivatives		591			(7	)		5						589
Provision for bad debts		154			(6	)					(6	)		142
Provisions		274			187						(9	)		452
Taxed depreciation and amortization		101			5									106
Other deferred tax assets		102			(2	)		(2	)		10			108
Total		1,294			144			3			(12	)		1,429
Deferred tax liabilities:
Derivatives		(411	)		8			(21	)		2			(422	)
Business combinations—for step-up of net assets in excess of tax basis		(142	)		5						6			(131	)
Deferred gains		(4	)		2									(2	)
Accelerated depreciation		(28	)		13						1			(14	)
Other deferred tax liabilities		(125	)		(22	)					15			(132	)
Total		(710	)		6			(21	)		24			(701	)
Total net deferred tax assets (liabilities)		584			150			(18	)		12			728

Schedule of Expirations of Deferred Tax Assets and Deferred Tax Liabilities

The expirations of deferred tax assets and deferred tax liabilities at December 31, 2017 were as follows:

	Within 1 year			Beyond 1 year			Total at December 31, 2017
	(millions of euros)
Deferred tax assets		423			1,006			1,429
Deferred tax liabilities		(28	)		(673	)		(701	)
Total net deferred tax assets (liabilities)		395			333			728

Schedule of Unused Tax Loss Carryforwards

At December 31, 2017, the TIM Group had unused tax loss carryforwards of 2,306 million euros mainly relating to the Brazil Business Unit and the company Telecom Italia Finance with the following expiration dates:

Year of expiration	(millions of euros)
2018		1
2019		—
2020		—
2021		—
2022		—
Expiration after 2022		8
Without expiration		2,297
Total unused tax loss carryforwards		2,306

Schedule of Income Tax Payables

Income tax payables amounted to 157 million euros (703 million euros at December 31, 2016). They break down as follows:

	At December 31,
	2017		2016
	(millions of euros)
Income tax payables:
Non-current		45		66
Current		112		637
Total		157		703

Schedule of Income Tax Expense

Income tax expenses breaks down as follows:

		2017			2016			2015
		(millions of euros)
Current taxes for the year			646			900			424
Net difference in prior years estimates			(6	)		(54	)		(6	)
Total current taxes			640			846			418
Deferred taxes			(150	)		34			(15	)
Total taxes on continuing operations	(A)		490			880			403
Total taxes on Discontinued operations/Non-current assets held for sale	(B)		—			48			320
Total income tax expense for the year	(A+B)		490			928			723

Schedule of Reconciliation Between the Theoretical Tax Expense

The reconciliation between the theoretical tax expense, using the IRES tax rate in force in Italy (24%), and the effective tax expense for the years ended December 31, 2017, 2016 and 2015 is the follows:

			2017			2016			2015
			(millions of euros)
Profit (loss) before tax from continuing operations				1,777			2,799			453
Theoretical income tax from continuing operations				426			770			125
Income tax effect on increases (decreases) in variations:
Tax losses of the year not considered recoverable				3			17			10
Tax losses from prior years not recoverable (recoverable) in future years				(2	)		(1	)		(16	)
Non-deductible goodwill impairment charge										66
Effect of change in IRES tax rate							25			31
Prior years’ IRES				(26	)		(38	)		(20	)
Brazil: different rate compared to theoretical rate in force in Italy				34			11			51
Brazil: incentive on investments in the north-east of the country				(31	)		(31	)		(25	)
Other net differences, Tax facilities included				(55	)		(26	)		69
Effective income tax recognized in income statement from continuing operations, excluding IRAP tax				349			727			291
IRAP tax				141			153			112
Total effective income tax recognized in income statement from continuing operations	(A	)		490			880			403
Effective income tax recognized in income statement from Discontinued operations/Non-current assets held for sale	(B	)		—			48			320
Total effective income tax recognized in income statements	(A+B	)		490			928			723

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Inventories (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Schedule of Inventories

Inventories increased by 20 million euros compared to December 31, 2016 and consisted of the following:

	As of December 31,
	2017		2016
	(millions of euros)
Raw materials and supplies		1		1
Work in progress and semi-finished products		3		3
Finished goods		286		266
Total		290		270

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Trade and Miscellaneous Receivables and Other Current Assets (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Summary of Increase in Trade and Miscellaneous Receivables and Other Current Assets

Trade and miscellaneous receivables and other current assets increased by 467 million euros compared to December 31, 2016 and were broken down as follows:

	As of December 31,
	2017				2016
			Of which IAS 39 Financial Instruments				Of which IAS 39 Financial Instruments
	(millions of euros)
Amounts due on construction contracts		34				33
Trade receivables:
Receivables from customers		2,528		2,528		3,110		3,110
Receivables from other telecommunications operators		972		972		815		815
		3,500		3,500		3,925		3,925
Miscellaneous receivables and other current assets:
Other receivables		645		154		784		166
Trade and miscellaneous prepaid expenses		780				684
		1,425		154		1,468		166
Total		4,959		3,654		5,426		4,091

Summary of Aging of Financial Instruments Included in Trade and Miscellaneous Receivables and Other Current Assets

The aging of financial instruments included in “Trade and miscellaneous receivables and other current assets” at December 31, 2017 and December 31, 2016 was as follows:

							Overdue:
	As of December 31, 2017		Total Current		Total overdue		0-90 days		91-180 days		181-365 days		More than 365 days
	(millions of euros)
Trade and miscellaneous receivables and other current assets		3,654		2,781		873		300		178		188		207

							Overdue:
	As of December 31, 2016		Total Current		Total overdue		0-90 days		91-180 days		181-365 days		More than 365 days
	(millions of euros)
Trade and miscellaneous receivables and other current assets		4,091		3,109		982		373		162		186		261

Summary of Provision for Bad Debts

Movements in the provision for bad debts were as follows:

	2017			2016
	(millions of euros)
At January 1		648			614
Provision charges to the income statement		242			233
Utilization and decreases		(278	)		(220	)
Exchange differences and other changes		(15	)		21
At December 31		597			648

Summary of Other Receivables

Details are as follows:

	As of December 31,
	2017		2016
	(millions of euros)
Advances to suppliers		69		41
Receivables from employees		12		26
Tax receivables		135		228
Receivables for grants from the government and public entities		207		242
Sundry receivables		222		247
Total		645		784

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Discontinued Operations/Non-current Assets Held for Sale (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Summary of Income Statement Impacts from The Sofora-telecom Argentina Group and its Sale

Below is a summary of the income statement impacts from the Sofora—Telecom Argentina group and its sale. The figures for 2016 have been translated at the average exchange rate for the period January 1 – March 8 (15.7981 pesos per euro), whereas the figures for 2015 have been translated at the annual average exchange rate (10.2689 pesos per euro).

		Year ended December 31,		1.1-3.8 2016			Year ended December 31,
		2017					2015
		(millions of euros)
Income statement effects from Discontinued operations/Non-current assets held for sale:
Revenues			—		504			3,943
Other income					1			4
Operating expenses					(372	)		(2,892	)
Gains (losses) on disposals of non-current assets								2
Goodwill and other non-current assets net impairment losses								(22	)
Operating profit (loss)			—		133			1,035
Finance income (expenses)					(42	)		(94	)
Profit (loss) before tax from Discontinued operations/Non-current assets held for sale			—		91			941
Income tax expense					(32	)		(320	)
Profit (loss) after tax from Discontinued operations/Non-current assets held for sale	(A)		—		59			621
Other minor income statement effects:
Other income/(expenses) connected to sales in previous years
Other minor entries								(10	)
	(B)		—		—			(10	)
Profit (loss) from Discontinued operations/Non-current assets held for sale	(C=A+B)		—		59			611
Income statement effects on the selling entities:
Net gains on disposal					307
Transfer to the separate consolidated dated income statement of the Reserve for exchange differences on translating foreign operations					(304	)
Income tax expense relating to the disposal					(15	)
	(D)		—		(12	)		—
Profit (loss) from Discontinued operations/Non-current assets held for sale	(C+D)		—		47			611
Attributable to:
Owners of the Parent			—		(3	)		89
Non-controlling interests			—		50			522

Summary of Earnings Per Share from Discontinued Operations/non-current Assets Held for Sale

The earnings per share from Discontinued operations/Non-current assets held for sale, for 2016, 2015 and 2014 are shown in the table below:

	Year ended December 31,		1.1-3.8 2016.		Year ended December 31,
	2017				2015
	(Euros)
Basic and Diluted Earnings Per Share (EPS) from Discontinued operations/Non-current assets held for sale (*)
Ordinary Share		—		—		0.03
Savings Share		—		—		0.03

(*) Basic EPS is equal to Diluted EPS.

Summary of Consolidated Statements of Cash Flows and its Net Impacts, Expressed in "Discontinued Operations/non-current Assets Held for Sale

Within the consolidated statements of cash flows the net impacts, expressed in terms of contribution to the consolidation, of the “Discontinued operations/Non-current assets held for sale” are broken down as follows:

	2017		2016			2015
	(millions of euros)
Discontinued operations/Non-current assets held for sale:
Cash flows from (used in) operating activities				130			810
Cash flows from (used in) investing activities				(117	)		(1,058	)
Cash flows from (used in) financing activities				(58	)		229
Total		—		(45	)		(19	)

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Equity (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Summary of Components of Equity

Equity consisted of:

	As of December 31,
	2017		2016
	(millions of euros)
Equity attributable to owners of the Parent		21,557		21,207
Non-controlling interests		2,226		2,346
Total		23,783		23,553

Summary of Reserves and Other Equity Interest

The composition of the “Equity attributable to owners of the Parent” is the following:

	As of December 31,
	2017			2016
	(millions of euros)
Share capital		11,587			11,587
Additional paid-in capital		2,094			2,094
Other reserves and retained earnings (accumulated losses), including profit (loss) for the year(*)		7,876			7,526
Total		21,557			21,207
(*) of which:
Reserve for available-for-sale financial assets		42			39
Reserve for hedging instruments		(582	)		(551	)
Reserve for exchange differences on translating foreign operations		(955	)		(366	)
Reserve for remeasurements of employee defined benefit plans (IAS 19)		(104	)		(113	)
Share of other comprehensive income (loss) of associates and joint ventures accounted for using the equity method
Sundry reserves and retained earnings (accumulated losses), including profit (loss) for the year		9,475			8,517

Summary of Reconciliation Between the Number of Outstanding Shares

Reconciliation between the number of outstanding shares at December 31, 2014 and December 31, 2015

	Shares as of December 31, 2014			Shares issued for plans destined for employees			Shares as of December 31, 2015			Percentage of Share Capital
	(number of shares)
Ordinary Shares issued (a)		13,470,955,451			28,956,320			13,499,911,771			69.13	%
Less: Treasury Shares (b)		(162,216,387	)		(1,538,001	)		(163,754,388	)
Ordinary Shares Outstanding (c)		13,308,739,064			27,418,319			13,336,157,383
Savings Shares Issued and Outstanding (d)		6,026,120,661			1,671,038			6,027,791,699			30.87	%
Total TIM S.p.A shares issued (a+d)		19,497,076,112			30,627,358			19,527,703,470			100.00	%
Total TIM S.p.A. shares outstanding (c+d)		19,334,859,725			29,089,357			19,363,949,082

Reconciliation between the number of outstanding shares at December 31, 2015 and December 31, 2016

	Shares as of December 31, 2015			Shares issued for the full conversion of the Mandatory Convertible Bond due 2016		Shares as of December 31, 2016			Percentage of Share Capital
	(number of shares)
Ordinary Shares issued (a)		13,499,911,771			1,703,210,812		15,203,122,583			71.61	%
Less: Treasury Shares (b)		(163,754,388	)				(163,754,388	)
Ordinary Shares Outstanding (c)		13,336,157,383			1,703,210,812		15,039,368,195
Savings Shares Issued and Outstanding (d)		6,027,791,699					6,027,791,699			28.39	%
Total TIM S.p.A. shares issued (a+d)		19,527,703,470			1,703,210,812		21,230,914,282			100.00	%
Total TIM S.p.A. shares outstanding (c+d)		19,363,949,082			1,703,210,812		21,067,159,894

Reconciliation between the number of outstanding shares at December 31, 2016 and December 31, 2017

	Shares as of December 31, 2016			Share issues		Shares as of December 31, 2017			Percentage of Share Capital
	(number of shares)
Ordinary Shares issued (a)		15,203,122,583					15,203,122,583			71.61	%
Less: Treasury Shares (b)		(163,754,388	)				(163,754,388	)
Ordinary Shares Outstanding (c)		15,039,368,195					15,039,368,195
Savings Shares Issued and Outstanding (d)		6,027,791,699					6,027,791,699			28.39	%
Total TIM S.p.A. shares issued (a+d)		21,230,914,282			—		21,230,914,282			100.00	%
Total TIM S.p.A. shares outstanding (c+d)		21,067,159,894			—		21,067,159,894

Reconciliation between the value of the outstanding shares as of December 31, 2014 and December 31, 2015

	Share capital as of December 31, 2014			Change in share capital as a result of plans destined for employees			Share capital as of December 31, 2015
	(millions of euros)
Ordinary Shares issued (a)		7,409			16			7,425
Less: Treasury Shares (b)		(89	)		(1	)		(90	)
Ordinary Shares Outstanding (c)		7,320			15			7,335
Savings Shares Issued and Outstanding (d)		3,314			1			3,315
Total TIM S.p.A. share capital issued (a+d)		10,723			17			10,740
Total TIM S.p.A. share capital outstanding (c+d)		10,634			16			10,650

Reconciliation between the value of the outstanding shares as of December 31, 2015 and December 31, 2016

	Share capital as of December 31, 2015			Change in share capital as a result of the full conversion of the Mandatory  Convertible Bond due 2016		Share capital as of December 31, 2016
	(millions of euros)
Ordinary Shares issued (a)		7,425			937		8,362
Less: Treasury Shares (b)		(90	)				(90	)
Ordinary Shares Outstanding (c)		7,335			937		8,272
Savings Shares Issued and Outstanding (d)		3,315					3,315
Total TIM S.p.A. share capital issued (a+d)		10,740			937		11,677
Total TIM S.p.A. share capital outstanding (c+d)		10,650			937		11,587

Reconciliation between the value of the outstanding shares as of December 31, 2016 and December 31, 2017

	Share capital as of December 31, 2016			Change in share capital		Share capital as of December 31, 2017
	(millions of euros)
Ordinary Shares issued (a)		8,362					8,362
Less: Treasury Shares (b)		(90	)				(90	)
Ordinary Shares Outstanding (c)		8,272					8,272
Savings Shares Issued and Outstanding (d)		3,315					3,315
Total TIM S.p.A. share capital issued (a+d)		11,677			—		11,677
Total TIM S.p.A. share capital outstanding (c+d)		11,587			—		11,587

Summary of Sundry Reserves and Retained Earnings (Accumulated Losses), Including Profit (Loss)

Other sundry reserves and retained earnings (accumulated losses), including profit (loss) for the year amounted to 9,475 million euros, showing an increase of 958 million euros, as detailed below:

	Year ended December 31,
	2017			2016
	(millions of euros)
Profit (loss) for the year attributable to Owners of the Parent		1,121			1,808
Dividends approved—TIM S.p.A.		(166	)		(166	)
Grant of equity instruments		(6	)		1
Other changes		9			(16	)
Change for the year in Sundry reserves and retained earnings (accumulated losses), including profit (loss) for the year		958			1,627

Summary of Equity Attributable to Non-controlling Interests

Non-controlling interests amounted to 2,226 million euros, mainly relating to companies belonging to the Brazil Business Unit (1,556 million euros) and the company Inwit (609 million euros), showing a drop of 120 million euros compared to December 31, 2016, as detailed below:

	Year ended December 31,
	2017			2016
	(millions of euros)
Profit (loss) for the year attributable to Non-controlling interests		166			158
Group Company dividends paid to non-controlling shareholders		(64	)		(38	)
Changes in the Reserve for exchange differences on translating foreign operations		(236	)		109
Disposal of the Sofora—Telecom Argentina group					(1,582	)
Other changes		14			4
Change for the year in Equity attributable to Non-Controlling interests		(120	)		(1,349	)

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Financial Liabilities (Non-current and Current) (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Summary of Non-current and Current Financial Liabilities

Non-current and current financial liabilities (gross financial debt) were broken down as follows:

		As of December 31,
		2017		2016
		(millions of euros)
Financial payables (medium/long-term):
Bonds			18,119		18,537
Convertible Bonds			1,862		1,832
Amounts due to banks			3,798		5,461
Other financial payables			161		306
			23,940		26,136
Finance lease liabilities (medium/long-term)			2,249		2,444
Other financial liabilities (medium/long-term):
Hedging derivatives relating to hedged items classified as non-current assets/liabilities of a financial nature			1,914		1,876
Non-hedging derivatives			5		13
Other liabilities
			1,919		1,889
Total Non-current financial liabilities	(A)		28,108		30,469
Financial payables (short-term):
Bonds			2,215		2,589
Convertible Bonds			6		6
Amounts due to banks			2,183		1,072
Other financial payables			96		117
			4,500		3,784
Finance lease liabilities (short-term)			181		192
Other financial liabilities (short-term):
Hedging derivatives relating to hedged items classified as current assets/liabilities of a financial nature			71		69
Non-hedging derivatives			4		11
Other liabilities
			75		80
Total Current financial liabilities	(B)		4,756		4,056
Financial liabilities directly associated with Discontinued operations/Non-current assets held for sale	(C)		—		—
Total Financial liabilities (Gross financial debt)	(A+B+C)		32,864		34,525

Summary of Gross Financial Debt

Gross financial debt according to the original currency of the transaction is as follows:

	As of December 31, 2017				As of December 31, 2016
	(millions of foreign currency)		(millions of euros)		(millions of foreign currency)		(millions of euros)
USD		7,168		5,977		7,504		7,119
GBP		1,266		1,427		2,017		2,356
BRL		5,863		1,478		7,128		2,075
JPY		20,031		148		20,032		162
EURO				23,834				22,813
Total				32,864				34,525

Summary of Gross Financial Debt by Effective Interest Rate

The breakdown of gross financial debt by effective interest rate bracket related to the original transaction excluding the effect of any hedging instruments, is provided below:

	As of December 31,
	2017		2016
	(millions of euros)
Up to 2.5%		5,005		5,041
From 2.5% to 5%		10,571		9,368
From 5% to 7.5%		11,265		12,629
From 7.5% to 10%		2,690		3,918
Over 10%		589		673
Accruals/deferrals, MTM and derivatives		2,744		2,896
Total		32,864		34,525

Summary of Gross Financial Debt by Nominal Interest Rate

Following the use of derivative hedging instruments, on the other hand, the gross financial debt by nominal interest rate bracket is:

	As of December 31,
	2017		2016
	(millions of euros)
Up to 2.5%		13,071		9,410
From 2.5% to 5%		6,631		7,775
From 5% to 7.5%		7,366		10,586
From 7.5% to 10%		1,849		1,430
Over 10%		1,203		2,428
Accruals/deferrals, MTM and derivatives		2,744		2,896
Total		32,864		34,525

Summary of Maturities of Financial Liabilities

Details of the maturities of Financial liabilities—at nominal repayment amount:

	Maturing by December 31, of the year
	2018		2019		2020		2021		2022		After 2022		Total
	(millions of euros)
Bonds		1,739		2,424		1,267		564		3,087		12,694		21,775
Loans and other financial liabilities		1,264		1,731		603		628		714		243		5,183
Finance lease liabilities		138		114		113		113		83		1,826		2,387
Total		3,141		4,269		1,983		1,305		3,884		14,763		29,345
Current financial liabilities		982												982
Total		4,123		4,269		1,983		1,305		3,884		14,763		30,327

Summary of Components of Financial Liabilities

Bonds were broken down as follows:

	As of December 31,
	2017			2016
	(millions of euros)
Non-current portion		18,119			18,537
Current portion		2,215			2,589
Total carrying amount		20,334			21,126
Fair value adjustment and measurement at amortized cost		(559	)		(709	)
Total nominal repayment amount		19,775			20,417

Summary of Components of Financial Liabilities

This item was broken down as follows:

	As of December 31,
	2017		2016
	(millions of euros)
Non-current portion		1,862		1,832
Current portion		6		6
Total carrying amount		1,868		1,838
Fair value adjustment and measurement at amortized cost		132		162
Total nominal repayment amount		2,000		2,000

Summary of Bonds Issued

The following table lists the bonds issued by companies of the TIM Group, by issuing company, expressed at the nominal repayment amount, net of bond repurchases, and also at market value:

Currency	Amount (millions)		Nominal repayment amount (millions of euros)		Coupon	Issue date		Maturity date		Issue price (%)		Market price as of December 31, 2017 (%)		Market value as of December 31, 2017 (millions of euros)
Bonds issued by TIM S.p.A.
Euro		592.9		593	4.750%		5/25/11		5/25/18		99.889		101.905		604
Euro		581.9		582	6.125%		6/15/12		12/14/18		99.737		105.768		615
Euro		832.4		832	5.375%		1/29/04		1/29/19		99.070		105.653		879
GBP		850.0		958	6.375%		6/24/04		6/24/19		98.850		107.457		1,029
Euro		719.5		719	4.000%		12/21/12		1/21/20		99.184		107.671		775
Euro		547.5		547	4.875%		9/25/13		9/25/20		98.966		112.218		614
Euro		563.6		564	4.500%		1/23/14		1/25/21		99.447		112.283		633
Euro		(b)203.5		204	6 month Euribor (base 365)		01/01/02		01/01/22		100		100.000		204
Euro		883.9		884	5.250%		02/10/10		02/10/22		99.295		117.798		1,041
Euro		(c)2,000		2,000	1.125%		3/26/15		3/26/22		100		100.347		2,007
Euro		1,000		1,000	3.250%		1/16/15		1/16/23		99.446		109.909		1,099
GBP		375.0		423	5.875%		5/19/06		5/19/23		99.622		117.038		495
Euro		1,000		1,000	2.500%		1/19/17		7/19/23		99.288		105.789		1,058
Euro		750		750	3.625%		1/20/16		1/19/24		99.632		111.698		838
USD		1,500		1,251	5.303%		5/30/14		5/30/24		100		107.369		1,343
Euro		1,000		1,000	3.000%		9/30/16		9/30/25		99.806		107.199		1,072
Euro		1,000		1,000	3.625%		5/25/16		5/25/26		100		112.068		1,121
Euro		1,250		1,250	2.375%		10/12/17		10/12/27		99.185		100.079		1,251
Euro		670		670	5.250%		03/17/05		03/17/55		99.667		117.022		784
Sub-Total				16,227											17,462
Bonds issued by Telecom Italia Finance S.A. and guaranteed by TIM S.p.A.
Euro		1,015		1,015	7.750%		01/24/03		01/24/33		(a)109.646		154.113		1,564
Sub-Total				1,015											1,564
Bonds issued by Telecom Italia Capital S.A. and guaranteed by TIM S.p.A.
USD		(d)676.6		564	6.999%		06/04/08		06/04/18		100		101.673		574
USD		(d)759.7		633	7.175%		06/18/09		06/18/19		100		106.399		674
USD		1,000		834	6.375%		10/29/03		11/15/33		99.558		116.568		972
USD		1,000		834	6.000%		10/06/04		09/30/34		99.081		111.781		932
USD		1,000		834	7.200%		07/18/06		07/18/36		99.440		124.700		1,040
USD		1,000		834	7.721%		06/04/08		06/04/38		100		129.801		1,082
Sub-Total				4,533											5,274
Total				21,775											24,300

(a) Weighted average issue price for bonds issued with more than one tranche.

(b) Reserved for employees.

(c) Bond convertible into newly-issued TIM S.p.A. ordinary treasury shares.

(d) Net of the securities bought back by TIM S.p.A. on July 20, 2015.

Summary of Changes in Bonds

The following table lists the changes in bonds during 2017:

New issues	Currency		Amount (millions of original currency)		Issue date
Telecom Italia S.p.A. 1,000 million euros 2.500% maturing 07/19/2023		Euro		1,000		01/19/2017
Telecom Italia S.p.A. 1,250 million euros 2.375% maturing 10/12/2027		Euro		1,250		10/12/2017

Repayments	Currency		Amount (millions of original currency)		Repayment date
Telecom Italia S.p.A. 545 million euros 7.000%(1)		Euro		545		01/20/2017
Telecom Italia S.p.A. 628 million euros 4.500%(2)		Euro		628		09/20/2017
Telecom Italia S.p.A. 750 million GBP 7.375%		GBP		750		12/15/2017

(1) Net of buybacks by the Company of 455 million euros during 2015.

(2) Net of buybacks by the Company of 372 million euros during 2015.

Summary of Composition and Drawdown of Committed Credit Lines Available

The following table shows the composition and the drawdown of the committed credit lines available at December 31, 2017:

	As of December 31,
	2017				2016
	Agreed		Drawn down		Agreed		Drawn down
	(billions of euros)
Revolving Credit Facility—expiring May 2019		4.00				4.00
Revolving Credit Facility—expiring March 2020		3.00				3.00
Total		7.00		—		7.00		—

Summary of Three Rating Agencies-standard & Poor's, Moody's and Fitch Ratings-rated Tim

At December 31, 2017, the three rating agencies—Standard & Poor’s, Moody’s and Fitch Ratings—rated TIM as follows:

	Rating	Outlook
STANDARD &POOR’S	BB+		Positive
MOODY’S	Ba1		Stable
FITCH RATINGS	BBB-		Stable

Summary of Non-current and Current Financial Liabilities

Additional cash flow information required by IAS 7.

				Cash transactions					Non cash transactions
		As of December 31, 2016		Receipts and/or issues		Payments and/or reimbursements			Exchange rate difference			Fair value changes			Other changes			As of December 31, 2017
		(millions of euros)
Financial payables (medium/long-term):
Bonds			21,126		2,250		(2,023	)		(873	)		(107	)		(39	)		20,334
Convertible Bonds			1,838													30			1,868
Amounts due to banks			6,038		324		(1,145	)		(219	)					82			5,080
Other financial payables			319				(111	)		(18	)					(15	)		175
	(a)		29,321		2,574		(3,279	)		(1,110	)		(107	)		58			27,457
of which short term			3,185				(3,258	)		(153	)		(25	)		3,768			3,517
Finance lease liabilities (medium/long-term)			2,636		56		(147	)		(65	)					(50	)		2,430
	(b)		2,636		56		(147	)		(65	)		—			(50	)		2,430
of which short term			192				(147	)		(4	)					140			181
Other financial liabilities (medium/long-term):
Hedging derivatives relating to hedged items classified as non-current assets/liabilities of a financial nature			1,945							165			(128	)		3			1,985
Non-hedging derivatives			24							(9	)					(6	)		9
Other liabilities
	(c)		1,969		—		—			156			(128	)		(3	)		1,994
of which short term			80							(4	)		(2	)		1			75
Financial payables (short-term):
Amounts due to banks			495													406			901
Other financial payables			104													(22	)		82
	(d)		599		—		—			—			—			384			983
Financial liabilities directly associated with Discontinued operations/Non-current assets held for sale																			—
	(e)		—		—		—			—			—			—			—
Total Financial liabilities (Gross financial debt)	(f=a+b+ c+d+e)		34,525		2,630		(3,426	)		(1,019	)		(235	)		389			32,864
Hedging derivatives relating to hedged items classified as current and non-current assets/liabilities of a financial nature	(g)		2,682							(768	)		(180	)		21			1,755
Non hedging derivatives	(h)		67							(42	)		(3	)					22
Total	(i=f-g-h)		31,776		2,630		(3,426	)		(209	)		(52	)		368			31,087

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Financial Risk Management (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Summary of Total Financial Liabilities at Nominal Repayment Amount

Total financial liabilities (at the nominal repayment amount)

	As of December 31, 2017						As of December 31, 2016
	Fixed rate		Variable rate		Total		Fixed rate		Variable rate		Total
	(millions of euros)
Bonds		17,237		4,538		21,775		17,978		4,439		22,417
Loans and other financial liabilities		3,689		3,881		7,570		3,588		4,505		8,093
Total non-current financial liabilities (including the current portion of medium/long-term financial liabilities)		20,926		8,419		29,345		21,566		8,944		30,510
Total current financial liabilities(*)		282		700		982		221		375		596
Total		21,208		9,119		30,327		21,787		9,319		31,106

(*) At December 31, 2017, variable-rate current liabilities included 38 million euros of payables to other lenders for installments paid in advance, which are classified in this line item even though they are not correlated to a definite rate parameter (83 million euros at December 31, 2016).

Summary of Total Financial Assets

Total financial assets (at the nominal investment amount)

	As of December 31, 2017						As of December 31, 2016
	Fixed rate		Variable rate		Total		Fixed rate		Variable rate		Total
	(millions of euros)
Cash and cash equivalents				2,930		2,930				2,592		2,592
Securities		623		1,100		1,723		1,390		1,586		2,976
Other receivables		927		79		1,006		1,531		167		1,698
Total		1,550		4,109		5,659		2,921		4,345		7,266

Summary of Total Financial Liabilities

Total financial liabilities

	As of December 31, 2017				As of December 31, 2016
	Adjusted carrying amount		Effective interest rate		Adjusted carrying amount		Effective interest rate
	(millions of euros)		(%)		(millions of euros)		(%)
Bonds		21,521		4.96		22,141		5.44
Loans and other financial liabilities		8,599		3.59		9,487		3.88
Total		30,120		4.57		31,628		4.97

Summary of Total Financial Assets

Total financial assets

	As of December 31, 2017				As of December 31, 2016
	Adjusted carrying amount		Effective interest rate		Adjusted carrying amount		Effective interest rate
	(millions of euros)		(%)		(millions of euros)		(%)
Cash and cash equivalents		2,930		0.05		2,592		0.05
Securities		1,723		4.07		2,976		7.17
Other receivables		326		2.03		230		5.23
Total		4,979		1.57		5,798		3.91

Summary of Financial liabilities-Maturities of Contractually Expected Disbursements

Financial liabilities—Maturities of contractually expected disbursements

		Maturing by December 31, of the year
		2018		2019			2020			2021			2022			After 2022			Total
		(millions of euros)
Bonds	Principal		1,739		2,424			1,267			564			3,087			12,694			21,775
	Interest		1,022		899			764			708			671			5,669			9,733
Loans and other financial liabilities	Principal		1,264		1,731			603			628			714			243			5,183
	Interest		37		(21	)		(26	)		(53	)		(74	)		(681	)		(818	)
Finance lease liabilities	Principal		138		114			113			113			83			1,826			2,387
	Interest		158		127			120			112			105			1,196			1,818
Non-current financial liabilities(*)	Principal		3,141		4,269			1,983			1,305			3,884			14,763			29,345
	Interest		1,217		1,005			858			767			702			6,184			10,733
Current financial liabilities	Principal		982		—			—			—			—			—			982
	Interest		3		—			—			—			—			—			3
Total financial liabilities	Principal		4,123		4,269			1,983			1,305			3,884			14,763			30,327
	Interest		1,220		1,005			858			767			702			6,184			10,736

(*) These include hedging and non-hedging derivatives.

Summary of Derivatives on Financial Liabilities-Contractually Expected Interest Flows

Derivatives on financial liabilities—Contractually expected interest flows

	Maturing by December 31, of the year
	2018			2019			2020			2021			2022			After 2022			Total
	(millions of euros)
Disbursements		414			342			296			295			295			2,613			4,255
Receipts		(520	)		(473	)		(400	)		(400	)		(399	)		(3,451	)		(5,643	)
Hedging derivatives—net (receipts) disbursements		(106	)		(131	)		(104	)		(105	)		(104	)		(838	)		(1,388	)
Disbursements		58			38			23			12			12			16			159
Receipts		(62	)		(38	)		(19	)		(11	)		(10	)		(15	)		(155	)
Non-hedging derivatives—net (receipts) disbursements		(4	)		—			4			1			2			1			4
Total net (receipts) disbursements		(110	)		(131	)		(100	)		(104	)		(102	)		(837	)		(1,384	)

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Derivatives (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Schedule of Derivative Financial Instrument By Type

The following table shows the derivative financial instruments of the TIM Group at December 31, 2017 and at December 31, 2016, by type (for cross currency and interest rate swaps the notional amount refers to the synthetic coverage):

Type	Hedged Risk	Notional amount at 12/31/2017		Notional amount at 12/31/2016		Spot(*) Mark-to-Market (Clean Price) at 12/31/2017			Spot(*) Mark-to-Market (Clean Price) at 12/31/2016
		(millions of euros)
Interest rate swaps	Interest rate risk		4,334		3,334		2			42
Cross Currency and Interest Rate Swaps	Interest rate risk and currency exchange rate risk				851					46
Total Fair Value Hedge Derivatives			4,334		4,185		2			88
Cross Currency and Interest Rate Swaps	Interest rate risk and currency exchange rate risk		7,100		7,952		(325	)		551
Total Cash Flow Hedge Derivatives			7,100		7,952		(325	)		551
Total Non-Hedge Accounting Derivatives			213		484		15			51
Total TIM Group Derivatives			11,647		12,621		(308	)		690

(*) Spot Mark-to-market above represents the market measurement of the derivative net of the accrued portion of the flow in progress.

Schedule of Transactions hedged by Cash Flow Hedges

The transactions hedged by cash flow hedges will generate cash flows and will produce economic effects in the income statement in the periods indicated in the following table:

Currency of denomination	Notional amount in currency of denomination (millions)		Start of period		End of period		Rate applied	Interest period
GBP		850		Jan-18		Jun-19	6.375%	Annually
GBP		375		Jan-18		May-23	5.875%	Annually
USD		186		Jan-18		Oct-29	5.450%	Semiannually
USD		1,000		Jan-18		Nov-33	6.375%	Semiannually
USD		1,000		Jan-18		July-36	7.200%	Semiannually
USD		677		Jan-18		Jun-18	6.999%	Semiannually
USD		1,000		Jan-18		Jun-38	7.721%	Semiannually
USD		760		Jan-18		Jun-19	7.175%	Semiannually
USD		1,000		Jan-18		Sept-34	6.000%	Semiannually
USD		1,500		Jan-18		May-24	5.303%	Semiannually
USD		186		Jan-18		Oct-29	0.750%	Semiannually

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Supplementary Disclosures on Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Carrying Amount and Fair Value Hierarchy for Each Category/Class of Financial Asset/Liability

Carrying amount and fair value hierarchy for each category/class of financial asset/liability and comparison with their fair value at December 31, 2017

					Amounts recognized in the financial statements according to IAS 39								Levels of hierarchy or of fair value
	IAS 39 categories	Note	Carrying amounts in financial statements at 12/31/2017		Amortized cost		Cost		Fair value taken to equity		Fair value recognized in the income statement		Level 1		Level 2		Amounts recognized in financial statements according to IAS 17		Fair Value at 12/31/2017
			(millions of euros)
Assets
Loans and receivables	LaR			7,914		7,913		1												7,914
Non-current assets
Receivables from employees		9		47		47
Other financial receivables		9		150		150
Miscellaneous receivables		10		371		370		1
Current assets
Receivables from employees		9		16		16
Other short-term financial receivables		9		101		101
Cash and cash equivalents		9		3,575		3,575
Trade receivables		13		3,500		3,500
Other receivables		13		154		154
Available-for-sale financial assets	AfS			1,044				28		1,016										1,044
Non-current assets
Other investments		8		51				28		23				3		20
Securities other than investments		9		—
Current assets
Securities other than investments		9		993						993				993
Financial assets at fair value through profit or loss held for trading	FAHfT			22								22								22
Non-current assets
Non-hedging derivatives		9		7								7				7
Current assets
Non-hedging derivatives		9		15								15				15
Securities other than investments: held for trading				—
Hedging derivatives	HD			1,755						1,713		42								1,755
Non-current assets
Hedging derivatives		9		1,495						1,474		21				1,495
Current assets
Hedging derivatives		9		260						239		21				260
Financial receivables for lease contracts	n.a.			114														114		114
Non-current assets		9		69														69
Current assets		9		45														45
Total				10,849		7,913		29		2,729		64		996		1,797		114		10,849

					Amounts recognized in the financial statements according to IAS 39								Levels of hierarchy or of fair value
	IAS 39 categories	Note	Carrying amounts in financial statements at 12/31/2017		Amortized cost		Cost		Fair value taken to equity		Fair value recognized in the income statement		Level 1		Level 2		Amounts recognized in financial statements according to IAS 17		Fair Value at 12/31/2017
			(millions of euros)
Liabilities
Financial liabilities at amortized cost	FLAC/HD			33,355		33,355														36,023
Non-current liabilities
Financial payables		16		23,940		23,940														—
Current liabilities
Financial payables		16		4,500		4,500														—
Trade and miscellaneous payables and other current liabilities		23		4,915		4,915
Financial liabilities at fair value through profit or loss held for trading	FLHfT			9								9								9
Non-current liabilities
Non-hedging derivatives				5								5				5
Current liabilities
Non-hedging derivatives				4								4				4
Hedging derivatives	HD			1,985						1,966		19								1,985
Non-current liabilities
Hedging derivatives		16		1,914						1,895		19				1,914
Current liabilities
Hedging derivatives		16		71						71						71
Finance lease liabilities	n.a.			2,430														2,430		3,604
Non-current liabilities		16		2,249														2,249
Current liabilities		16		181														181
Total				37,779		33,355		—		1,966		28		—		1,994		2,430		41,621

Carrying amount and fair value hierarchy for each category/class of financial asset/liability and comparison with their fair value at December 31, 2016

					Amounts recognized in the financial statements according to IAS 39								Levels of hierarchy or of fair value
	IAS 39 categories	Note	Carrying amounts in financial statements at 12/31/2016		Amortized cost		Cost		Fair value taken to equity		Fair value recognized in the income statement		Level 1		Level 2		Amounts recognized in financial statements according to IAS 17		Fair Value at 12/31/2016
	(millions of euros)
Assets
Loans and receivables	LaR			8,631		8,629		2												8,631
Non-current assets
Receivables from employees		9		48		48
Other financial receivables		9		12		12
Miscellaneous receivables		10		399		397		2
Current Assets
Receivables from employees		9		15		15
Other short-term financial receivables		9		102		102
Cash and cash equivalents		9		3,964		3,964
Trade receivables		13		3,925		3,925
Other receivables		13		166		166
Available-for-sale financial assets	AfS			1,426				27		1,399										1,426
Non-current assets
Other investments		8		46				27		19				2		17
Securities other than investments		9		1						1				1
Current Assets
Securities other than investments		9		1,379						1,379				1,379
Financial assets at fair value through profit or loss held for trading	FAHfT			207								207								207
Non-current assets
Non-hedging derivatives		9		39								39				39
Current Assets
Non-hedging derivatives				28								28				28
Securities other than investments: held for trading				140								140		140
Hedging derivatives	HD	9		2,682						2,578		104								2,682
Non-current assets
Hedging derivatives		9		2,497						2,454		43				2,497
Current Assets
Hedging derivatives		9		185						124		61				185
Financial receivables for lease contracts	n.a.			160														160		160
Non-current assets		9		101														101
Current Assets		9		59														59
Total				13,106		8,629		29		3,977		311		1,522		2,766		160		13,106

					Amounts recognized in the financial statements according to IAS 39								Levels of hierarchy or of fair value
	IAS 39 categories	Note	Carrying amounts in financial statements at 12/31/2016		Amortized cost		Cost		Fair value taken to equity		Fair value recognized in the income statement		Level 1		Level 2		Amounts recognized in financial statements according to IAS 17		Fair Value at 12/31/2016
	(millions of euros)
Liabilities
Financial liabilities at amortized cost	FLAC/HD			35,259		35,259														35,517
Non-current liabilities
Financial payables		16		26,136		26,136
Current liabilities
Financial payables		16		3,784		3,784
Trade and miscellaneous payables and other current liabilities		22		5,339		5,339
Financial liabilities at fair value through profit or loss held for trading	FLHfT			24								24								24
Non-current liabilities
Non-hedging derivatives		14		13								13				13
Current liabilities
Non-hedging derivatives		16		11								11				11
Hedging derivatives	HD			1,945						1,943		2								1,945
Non-current liabilities
Hedging derivatives		16		1,876						1,874		2				1,876
Current liabilities
Hedging derivatives		16		69						69						69
Finance lease liabilities	n.a.			2,636														2,636		3,921
Non-current liabilities		16		2,444														2,444
Current liabilities		16		192														192
Total				39,864		35,259		—		1,943		26		—		1,969		2,636		41,407

Summary of Gains and Losses by IAS 39 Category

Gains and losses by IAS 39 category—Year 2017

	IAS 39 categories	Net gains/ (losses), 2017(1)			Of which interest
	(millions of euros)
Loans and receivables	LaR		(356	)		118
Available-for-sale financial assets	AfS		8
Financial Assets/Liabilities Held for Trading	FAHfT e FLHfT		(19	)
Financial liabilities at amortized cost	FLAC		(1,338	)		1,376
Total			(1,705	)		1,494

(1) Of which 2 million euros relates to fees and expenses not included in the effective interest rate calculation on financial assets/liabilities other than those at fair value through profit or loss.

Gains and losses by IAS 39 category—Year 2016

	IAS 39 categories	Net gains/ (losses), 2016(1)			Of which interest
	(millions of euros)
Loans and receivables	LaR		(258	)		139
Available-for-sale financial assets	AfS		12
Financial Assets/Liabilities Held for Trading	FAHfT/FLHfT		456
Financial liabilities at amortized cost	FLAC		(1,454	)		1,481
Total			(1,244	)		1,620

(1) Of which, 2 million euros relates to fees and expenses not included in the effective interest rate calculation on financial assets/liabilities other than those at fair value through profit or loss.

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Employee Benefits (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Summary of Provisions for Employee Benefits

Employee benefits increased by 448 million euros compared to December 31, 2016 and are summarized as follows:

		As of December 31, 2015		Increases/ Present value		Decrease			Exchange differences and other changes			As of December 31, 2016
		(millions of euros)
Provision for employee severance indemnities	(A)		1,018		49		(59	)		1			1,009
Provision for pension plans			23		7		(2	)					28
Provision for termination benefit incentives and Corporate restructuring expenses			413		101		(160	)		(6	)		348
Total other provisions for employee benefits	(B)		436		108		(162	)		(6	)		376
Total	(A+B)		1,454		157		(221	)		(5	)		1,385
Of which:
Non-current portion			1,420										1,355
Current portion(*)			34										30

(*) The current portion refers only to Other provisions for employee benefits.

		As of December 31, 2016		Increases/ Present value			Decrease			Exchange differences and other changes			As of December 31, 2017
		(millions of euros)
Provision for employee severance indemnities	(A)		1,009		—			(51	)		—			958
Provision for pension plans and other			28		(2	)		(1	)		(3	)		22
Provision for termination benefit incentives and Corporate restructuring expenses			348		689			(177	)		(7	)		853
Total other provisions for employee benefits	(B)		376		687			(178	)		(10	)		875
Total	(A+B)		1,385		687			(229	)		(10	)		1,833
Of which:
Non-current portion			1,355											1,736
Current portion(*)			30											97

(*) The current portion refers only to Other provisions for employee benefits.

Summary of Increases in Present Value of Employee Benefits

The Provision for employee severance indemnities only refers to Italian companies and decreased overall by 51 million euros due to drawdowns in the year for termination benefits paid and advance payments. “Increases/Present value” showed a nil balance from the net effect of the following factors:

	Year ended December 31,
	2017			2016		2015
	(millions of euros)
(Positive)/negative effect of curtailment		(6	)
Current service cost (*)
Finance expenses		14			16		22
Net actuarial (gains) losses for the year		(8	)		33		(16	)
Total		—			49		6
Effective return on plan assets		there are no assets servicing the plan

(*) Following the social security reform in 2007, the portions intended for the INPS Treasury Fund or for the supplementary pension funds have been recorded under “Employee benefits expenses”, in “Social security expenses”, and not as “Employee severance indemnities expenses”. The latter account will still be used only for the accruals of companies with less than 50 employees, amounting to 0.3 million euros in 2017 (essentially unchanged compared to 2016 and 2015).

Summary of Emplyee Benefits Assumptions

The following assumptions have been made:

FINANCIAL ASSUMPTIONS	Executives	Non-executives
Inflation rate	1.50% per annum		1.50% per annum
Discount rate	1.30% per annum		1.30% per annum
Employee severance indemnities annual increase rate	2.625% per annum		2.625% per annum
Annual real wage growth:
equal to or less than 40 years of age	1.0% per annum		1.0% per annum
over 40 but equal to or less than 55 years of age	0.5% per annum		0.5% per annum
over 55 years of age	0.0% per annum		0.0% per annum

DEMOGRAPHIC ASSUMPTIONS	Executives	Non-executives
Probability of death	RG 48 mortality tables published by “Ragioneria Generale dello Stato”	RG 48 mortality tables published by “Ragioneria Generale dello Stato”
Probability of disability	INPS tables divided by age and sex	INPS tables divided by age and sex
Probability of resignation:
up to 40 years of age	6.50%	1.00%
From 41 to 50 years of age	2.00%	0.50%
From 51 to 59 years of age	2.00%	0.50%
From 60 to 64 years of age	20.00%	6.50%
Over 65 years of age	None	None
Probability of retirement	Reaching the minimum requisites established by the Obligatory General Insurance updated on the basis of Italian Law 214 of December 22, 2011
Probability of receiving at the beginning of the year an advance from the provision for severance indemnities accrued equal to 70%	1.5% per annum	1.5% per annum

Summary of Sensitivity Analysis for Actuarial Assumptions

The weighted average duration of the obligation is 10.9 years.

CHANGES IN ASSUMPTIONS	Amounts (millions of euros)
Turnover rate:
+0.25 p.p.		(2	)
- 0.25 p.p.		2
Annual inflation rate:
+0.25 p.p.		17
- 0.25 p.p.		(17	)
Annual discount rate:
+0.25 p.p.		(23	)
- 0.25 p.p.		24

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Provisions (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Summary of Other Provisions

Provisions increased by 133 million euros compared to December 31, 2016. The figure breaks down as follows:

	As of December 31, 2016		Increase		Used through income statement			Used directly			Exchange differences and other changes			As of December 31, 2017
	(millions of euros)
Provision for taxation and tax risks		119		18					(31	)		(13	)		93
Provision for restoration costs		326		28					(4	)					350
Provision for legal disputes		457		260		(1	)		(107	)		(4	)		605
Provision for commercial risks		46		6					(18	)		(6	)		28
Provision for risks and charges on investments and corporate-related transactions		28				(2	)					6			32
Other provisions		8		8		(1	)		(4	)		(2	)		9
Total		984		320		(4	)		(164	)		(19	)		1,117
Of which:
Non-current portion		830													825
Current portion		154													292

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Miscellaneous Payables and Other Non-Current Liabilities (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Schedule of Miscellaneous Payables and Other Non-Current Liabilities

Miscellaneous payables and other non-current liabilities increased by 71 million euros compared to December 31, 2016 and are summarized as follows:

	As of December 31,
	2017		2016
	(millions of euros)
Payables to social security agencies		238		116
Capital grants		391		371
Deferred income		988		1,033
Income tax payables (*)		45		66
Other		16		21
Total		1,678		1,607

(*) Analyzed in the Note “Income tax expense”.

Schedule of Payables to Social Security Agencies

Payables to social security agencies related to the residual amount due to the INPS for estimated employee benefit obligations owed under Law 58/1992, as well as—from 2015—the amount due to the INPS for the application of the 2015 arrangements relating to Article 4 paragraphs 1-7ter, of Italian Law 92 of June 28, 2012, the “Fornero” law (see the Note “Employee benefits expenses” for more details). Details are as follows:

	As of December 31,
	2017		2016
	(millions of euros)
Non-current payables:
Due from 2 to 5 years after the end of the reporting period		226		107
Due beyond 5 years after the end of the reporting period		12		9
		238		116
Current payables		58		69
Total		296		185

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Trade and Miscellaneous Payables and Other Current Liabilities (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Summary of Trade and Miscellaneous Payables and Other Current Liabilities

Trade and miscellaneous payables and other current liabilities increased by 126 million euros compared to December 31, 2016 and were broken down as follows:

		As of December 31,
		2017				2016
				Of which IAS 39 Financial Instruments				Of which IAS 39 Financial Instruments
		(millions of euros)
Payables on construction work	(A)		19				25
Trade payables:
Payables to suppliers			4,262		4,262		4,532		4,532
Payables to other telecommunication operators			383		383		323		323
	(B)		4,645		4,645		4,855		4,855
Tax payables	(C)		584				292
Miscellaneous payables and other current liabilities:
Payables for employee compensation			245				319
Payables to social security agencies			202				215
Trade and miscellaneous deferred income			508				488
Advances received			69				53
Customer-related items			602		77		847		199
Payables for “TLC operating fee”			15				15
Dividends approved, but not yet paid to shareholders			19		19		33		33
Other current liabilities			223		174		320		252
Employee benefits (except for Employee severance indemnities) for the current portion expected to be settled within 1 year			97				30
Provisions for risks and charges for the current portion expected to be settled within 1 year			292				154
	(D)		2,272		270		2,474		484
Total	(A+B+C+D)		7,520		4,915		7,646		5,339

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Contingent Liabilities, Other Information, Commitments and Guarantees (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Information on Main Guarantees for Loans

Main guarantees for loans at December 31, 2017

Issuer	Amount (millions of euros)
BBVA—Banco Bilbao Vizcaya Argentaria		368
SACE		368
Intesa Sanpaolo		220
Cassa Depositi e Prestiti		157
Ing		105
Unicredit		105
Commerzbank		58
Banco Santander		52
Sumitomo Mitsui Banking		52
Bank of Tokyo—Mitsubishi UFJ		52

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Revenues (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Schdule of Revenues

Details are as follows:

	Year ended December 31,
	2017		2016			2015
	(millions of euros)
Equipment sales		1,560		1,378			1,474
Services		18,264		17,655			18,258
Revenues on construction contracts		4		(8	)		(13	)
Total		19,828		19,025			19,719

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Other Income (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Disclosure of Other Operating Income

Details are as follows:

	Year ended December 31,
	2017		2016		2015
	(millions of euros)
Late payment fees charged for telephone services		59		60		59
Recovery of employee benefit expenses, purchases and services rendered		22		33		32
Capital and operating grants		51		36		33
Damage compensation, penalties and sundry recoveries		35		24		25
Partnership agreements		116		71		—
Release of provisions and other payable items, other income		240		87		138
Total		523		311		287

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Acquisition of Goods and Services (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Disclosure of Detailed Information About Acquisition of Goods and Services

Details are as follows:

			Year ended December 31,
			2017		2016		2015
			(millions of euros)
Acquisition of raw materials and merchandise	(A)			1,863		1,614		1,811
Costs of services:
Revenues due to other TLC operators				1,737		1,686		1,713
Interconnection costs				28		26		24
Commissions, sales commissions and other selling expenses				1,109		937		984
Advertising and promotion expenses				277		294		414
Professional and consulting services				223		186		366
Utilities				467		484		483
Maintenance				242		289		334
Outsourcing costs for other services				513		447		455
Mailing and delivery expenses for telephone bills, directories and other materials to customers				96		100		84
Other service expenses				572		522		610
	(B)			5,264		4,971		5,467
Lease and rental costs:
Rent and leases				739		702		699
TLC circuit lease rents and rents for use of satellite systems				298		288		343
Other lease and rental costs				224		218		212
	(C)			1,261		1,208		1,254
Total	(A+B+C	)		8,388		7,793		8,532

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Employee Benefits Expenses (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Details of Employee Benefit Expenses

Details are as follows:

		Year ended December 31,
		2017		2016		2015
		(millions of euros)
Employee benefits expenses
Wages and salaries			2,056		2,116		2,296
Social security expenses			745		770		834
Other employee benefits			110		37		2
	(A)		2,911		2,923		3,132
Costs and provisions for temp work	(B)		—		—		—
Miscellaneous expenses for personnel and other labor-related services rendered:
Charges for termination benefit incentives			28		10		11
Corporate restructuring expenses			680		156		439
Other			7		17		7
	(C)		715		183		457
Total	(A+B+C)		3,626		3,106		3,589

Details of Average Salaried Workforce Breakdown By Category

The average salaried workforce, including those with temporary work contracts, was 54,946 in 2017 (57,855 in 2016 and 61,553 in 2015). A breakdown by category is as follows:

	Year ended December 31,
	2017		2016		2015
	(Full time equivalent units)
Executives		707		837		892
Middle management		4,269		4,450		4,585
White collars		49,967		52,563		56,065
Blue collars		1		1		8
Employees on payroll		54,944		57,851		61,550
Employees with temp work contracts		2		4		3
Total average headcount of salaried workforce		54,946		57,855		61,553

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Other Operating Expenses (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Schedule of Other Operating Expenses

Details are as follows:

	Year ended December 31,
	2017		2016		2015
	(millions of euros)
Write-downs and expenses in connection with credit management		400		335		345
Provision charges		228		144		330
TLC operating fees and charges		356		373		342
Indirect duties and taxes		111		100		116
Penalties, settlement compensation and administrative fines		33		44		292
Association dues and fees, donations, scholarships and traineeships		15		18		18
Sundry expenses		65		69		48
Total		1,208		1,083		1,491
of which, included in the supplementary disclosure on financial instruments		400		335		345

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Internally Generated Assets (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Schedule of Detail Information of Internally Generated Assets

Details are as follows:

	Year ended December 31,
	2017		2016		2015
	(millions of euros)
Intangible assets with a finite useful life		272		289		312
Tangible assets owned		354		350		344
Total		626		639		656

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Depreciation and Amortization (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Summary of Depreciation and Amortization Expenses

		Year ended December 31,
		2017		2016		2015
		(millions of euros)
Amortization of intangible assets with a finite useful life:
Industrial patents and intellectual property rights			1,263		1,243		1,268
Concessions, licenses, trademarks and similar rights			396		393		391
Other intangible assets			134		107		129
	(A)		1,793		1,743		1,788
Depreciation of tangible assets owned:
Buildings (civil and industrial)			39		48		38
Plant and equipment			2,286		2,170		2,018
Manufacturing and distribution equipment			16		15		15
Other			159		157		159
	(B)		2,500		2,390		2,230
Depreciation of tangible assets held under finance leases:
Buildings (civil and industrial)			130		125		105
Plant and equipment			21		17		9
Other			29		16		3
	(C)		180		158		117
Total	(A+B+C)		4,473		4,291		4,135

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Gains (Losses) on Disposals of Non-current Assets (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Schedule of Gain Losses on Disposal of Non Current Assets

Details are as follows:

		Year ended December 31,
		2017		2016		2015
		(millions of euros)
Gains on disposals of non-current assets:
Gains on the retirement/disposal of intangible and tangible assets			15		28		348
Gains on the disposal of investments in subsidiaries			—		—		—
	(A)		15		28		348
Losses on disposals of non-current assets:
Losses on the retirement/disposal of intangible and tangible assets			4		14		12
Losses on the disposals of investments in subsidiaries			—		—		—
	(B)		4		14		12
Total	(A-B)		11		14		336

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Impairment Reversals (Losses) on Non-Current Assets (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Summary of Impairment Reversals (Losses) on Non-Current Assets

Details are as follows:

		Year ended December 31,
		2017			2016			2015
		(millions of euros)
Reversals of impairment losses on non-current assets:
on intangible assets			—			—			—
on tangible assets			—			—			—
	(A)		—			—			—
Impairment losses on non-current assets:
on intangible assets			30			—			240
on tangible assets			7			3			4
	(B)		37			3			244
Total	(A-B)		(37	)		(3	)		(244	)

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Other Income (Expenses) from Investments (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Detailed Information About Other Income (Expenses) from Investments

Details are as follows:

	Year ended December 31,
	2017			2016		2015
	(millions of euros)
Dividends from Other investments		1			7		3
Net gains on disposals of Other investments		—			—		11
Loss and impairment losses on Other investments		(19	)		—		(4	)
Total		(18	)		7		10
of which, included in the supplementary disclosure on financial instruments		1			7		14

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Finance Income and Finance Expenses (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Summary of Finance Income

Finance income amounted to 1,808 million euros in 2017, 2,543 million euros in 2016 and 2,760 million euros in 2015.

Details are as follows:

		Year ended December 31,
		2017		2016		2015
		(millions of euros)
Interest income and other finance income:
Income from financial receivables recorded in non-current assets			—		—		—
Income from securities other than investments, recorded in non-current assets			—		—		1
Income from securities other than investments, recorded in current assets			14		16		26
Income other than the above:
Interest income			129		151		214
Exchange gains			782		713		976
Income from fair value hedge derivatives			66		65		99
Reversal of the Reserve for cash flow hedge derivatives to the income statement (interest rate component)			568		649		954
Income from non-hedging derivatives			9		13		15
Miscellaneous finance income			26		37		110
	(A)		1,594		1,644		2,395
Positive fair value adjustments to:
Fair value hedge derivatives			—		50		129
Underlying financial assets and liabilities of fair value hedges derivatives			95		173		10
Non hedging derivatives			119		676		226
	(B)		214		899		365
Reversal of impairment loss on financial assets other than investments	(C)		—		—		—
Total	(A+B+C)		1,808		2,543		2,760
of which, included in the supplementary disclosure on financial instruments			300		987		630

Summary of Finance Expenses

Finance expenses

Finance expenses amounted to 3,303 million euros in 2017, 3,450 million euros in 2016 and 5,281 million euros in 2015.

Details are as follows:

		Year ended December 31,
		2017		2016		2015
		(millions of euros)
Interest expenses and other finance expenses:
Interest expenses and other costs relating to bonds			1,100		1,162		1,621
Interest expenses to banks			113		117		128
Interest expenses to others			250		246		264
			1,463		1,525		2,013
Commissions			91		95		140
Exchange losses			759		467		1,158
Charges from fair value hedge derivatives			—		1		12
Reversal of the Reserve for cash flow hedge derivatives to the income statement (interest rate component)			489		548		820
Charges from non-hedging derivatives			22		64		75
Miscellaneous finance expenses			256		221		360
	(A)		3,080		2,921		4,578
Negative fair value adjustments to:
Fair value hedge derivatives			87		178		33
Underlying financial assets and liabilities of fair value hedges derivatives			—		45		117
Non hedging derivatives			136		306		553
	(B)		223		529		703
Impairment losses on financial assets other than investments	(C)		—		—		—
Total	(A+B+C)		3,303		3,450		5,281
of which, included in the supplementary disclosure on financial instruments			1,606		1,903		2,788

Summary of Net Effects relating to Derivative Financial Instruments

For greater clarity of presentation, the net effects relating to derivative financial instruments are summarized in the following table:

		Year ended December 31,
		2017			2016			2015
		(millions of euros)
NET EXCHANGE GAINS AND LOSSES
Exchange gains			782			713			976
Exchange losses			(759	)		(467	)		(1,158	)
			23			246			(182	)
NET RESULT FROM DERIVATIVES
Income from fair value hedge derivatives			66			65			99
Charges from fair value hedge derivatives			—			(1	)		(12	)
Net result from fair value hedge derivatives	(A)		66			64			87
Positive effect of the Reversal of the Reserve of cash flow hedge derivatives to the income statement for the interest rate component			568			649			954
Negative effect of the Reversal of the Reserve of cash flow hedge derivatives to the income statement for the interest rate component			(489	)		(548	)		(820	)
Net effect of the Reversal of the Reserve of cash flow hedge derivatives to the income statement for the interest rate component	(B)		79			101			134
Income from non-hedging derivatives			9			13			15
Charges from non-hedging derivatives			(22	)		(64	)		(75	)
Net result from non-hedging derivatives	(C)		(13	)		(51	)		(60	)
Net result from derivatives	(A+B+C)		132			114			161
Positive fair value adjustment to fair value hedge derivatives			—			50			129
Negative fair value adjustment to underlying financial assets and liabilities of fair value hedge derivatives			—			(45	)		(117	)
Net fair value adjustments	(D)		—			5			12
Positive fair value adjustments to underlying financial assets and liabilities of fair value hedge derivatives			95			173			10
Negative fair value adjustments to fair value hedge derivatives			(87	)		(178	)		(33	)
Net fair value adjustments	(E)		8			(5	)		(23	)
Net fair value adjustment to fair value hedge derivatives and underlying	(D+E)		8			—			(11	)
NET FAIR VALUE ADJUSTMENTS TO NON-HEDGING DERIVATIVES
Positive fair value adjustments to non-hedging derivatives	(F)		119			676			226
Negative fair value adjustments to non-hedging derivatives	(G)		(136	)		(306	)		(553	)
Net fair value adjustments to non-hedging derivatives	(F+G)		(17	)		370			(327	)

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Profit (Loss) for the Year (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Summary of Profits (Losses) for the year

Profits (losses) for the years ended December 31, 2017, 2016 and 2015 are summarized as follows:

	Year ended December 31,
	2017		2016			2015
	(millions of euros)
Profit (loss) for the year		1,287		1,966			661
Attributable to:
Owners of the Parent
Profit (loss) from continuing operations		1,121		1,811			(159	)
Profit (loss) from Discontinued operations/Non-current assets held for sale		—		(3	)		89
Profit (loss) for the year attributable to owners of the Parent		1,121		1,808			(70	)
Non-controlling interests
Profit (loss) from continuing operations		166		108			209
Profit (loss) from Discontinued operations/Non-current assets held for sale		—		50			522
Profit (loss) for the year attributable to Non-Controlling interests		166		158			731

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Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Schedule of Basic Earnings Per Share

		Year ended December 31,
		2017			2016			2015
Basic Earnings Per Share
Profit (loss) for the year attributable to owners of the Parent			1,121			1,808			(70	)
Less: additional dividends for the savings shares (0.011 per share and up to capacity)			(66	)		(66	)		—
	(millions of euros)		1,055			1,742			(70	)
Average number of Ordinary and Savings Shares	(millions)		21,067			21,067			20,916
Basic earnings per share— Ordinary Shares			0.05			0.08			—
Plus: additional dividends per savings Share			0.01			0.01			—
Basic earnings per share— Savings Shares	(euro)		0.06			0.09			—
Basic Earnings Per Share From continuing Operations
Profit (loss) from continuing operations attributable to owners of the Parent			1,121			1,811			(159	)
Less: additional dividends for the Savings Shares			(66	)		(66	)		—
	(millions of euros)		1,055			1,745			(159	)
Average number of Ordinary and Savings Shares	(millions)		21,067			21,067			20,916
Basic earnings (loss) per share from continuing operations— Ordinary Shares			0.05			0.08			(0.01	)
Plus: additional dividends per savings Share			0.01			0.01			—
Basic earnings (loss) per share from continuing operations— Savings Shares	(Euro)		0.06			0.09			(0.01	)
Basic Earnings Per Share From Discontinued operations/Non-current assets held for sale
Profit (loss) from Discontinued operations/Non-current assets held for sale	(millions of euros)		—			47			611
Average number of Ordinary and Savings Shares	(millions)		21,067			21,067			20,916
Basic earnings (loss) per share from Discontinued operations/ Non-current assets held for sale—Ordinary Shares	(euro)		—			—			0.03
Basic earnings (loss) per share from Discontinued operations/ Non-current assets held for sale—Savings Shares	(euro)		—			—			0.03
		Year ended December 31,
		2017			2016			2015
Average number of Ordinary Shares			15,039,368,195			15,039,128,128			14,889,773,009
Average number of Savings Shares			6,027,791,699			6,027,791,699			6,026,677,674
Total			21,067,159,894			21,066,919,827			20,916,450,683

		Year ended December 31,
		2017			2016			2015
Diluted Earnings Per Share
Profit (loss) for the year attributable to Owners of the Parent			1,121			1,808			(70	)
Dilution effect of stock option plans and convertible bonds (*)			32			43			—
Less: additional dividends for the savings shares (0.011 per share and up to capacity)			(66	)		(66	)		—
	(millions of euros)		1,087			1,785			(70	)
Average number of Ordinary and Savings Shares	(millions)		22,167			22,194			20,916
Diluted earnings per share—Ordinary Shares			0.05			0.08			—
Plus: additional dividends per savings Share			0.01			0.01			—
Diluted earnings per share—Savings Shares	(euro)		0.06			0.09			—
Diluted Earnings Per Share From continuing Operations
Profit (loss) from continuing operations attributable to owners of the Parent			1,121			1,811			(159	)
Dilution effect of stock option plans and convertible bonds (*)			32			43			—
Less: additional dividends for the Savings Shares			(66	)		(66	)		—
	(millions of euros)		1,087			1,788			(159	)
Average number of Ordinary and Savings Shares	(millions)		22,167			22,194			20,916
Diluted earnings (loss) per share from continuing operations—Ordinary Shares			0.05			0.08			(0.01	)
Plus: additional dividends per savings Share			0.01			0.01			—
Diluted earnings (loss) per share from continuing operations—Savings Shares	(euro)		0.06			0.09			(0.01	)
Diluted Earnings Per Share From Discontinued operations/Non-current assets held for sale
Profit (loss) from Discontinued operations/Non-current assets held for sale	(millions of euros)		—			47			611
Dilution effect of stock option plans and convertible bonds
Average number of Ordinary and Savings Shares	(millions)		22,167			22,194			20,916
Diluted earnings per share from Discontinued operations/ Non-current assets held for sale—Ordinary Shares	(euro)		—			—			0.03
Diluted earnings per share from Discontinued operations/ Non-current assets held for sale—Savings Shares	(euro)		—			—			0.03
		Year ended December 31,
		2017			2016			2015
Average number of Ordinary Shares(*)			16,139,681,521			16,166,142,282			14,889,773,009
Average number of Savings Shares			6,027,791,699			6,027,791,699			6,026,677,674
Total			22,167,473,220			22,193,933,981			20,916,450,683

(*) The average number of ordinary shares also includes the potential ordinary shares relating to the equity compensation plans of employees for which the (market and non-market) performance conditions have been met, in addition to the theoretical number of shares that are issuable as a result of the conversion of the unsecured equity-linked convertible bond. Consequently, the “Net profit (loss) for the year attributable to Owners of the Parent” and the “Profit (loss) from continuing operations attributable to Owners of the Parent” have also been adjusted to exclude the effects, net of tax, related to the above-mentioned plans and to the convertible bond (+32 million euros in 2017 and +43 million euros in 2016).

Future Potential Changes in Share Capital

The table below shows future potential changes in share capital, based on: the issuance of the convertible bond by TIM S.p.A. in March 2015; the authorizations to increase the share capital in place at December 31, 2017; and the options and rights granted under equity compensation plans, still exercisable at that date:

	Number of maximum shares issuable		Share capital (thousands of euros)		Additional paid-in capital (thousands of euros)		Subscription price per shares (euros)
Additional capital increases not yet approved (ordinary shares)
2014-2016 Stock Option Plan		133,042		73		80		1.15
		343,069		189		158		1.01
		893,617		492		393		0.99
		13,555,651		7,455		5,287		0.94
Total additional capital increases not yet approved (ordinary shares)		14,925,379		8,209		5,918
Capital increases already approved (ordinary shares)
2015 Convertible Bond (ordinary shares)(*)		1,082,485,386		2,000,000		n.a.		n.a.
Convertible bonds				2,000,000
Total				2,008,209

(*) The number of shares potentially issuable shown may be subject to adjustments.

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Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Separate Consolidated Income Statements by Operating Segment

SEPARATE CONSOLIDATED INCOME STATEMENTS BY OPERATING SEGMENT

	Domestic									Brazil									Media					Other operations									Adjustments and eliminations									Consolidated Total
	2017			2016			2015			2017			2016			2015			2017	2016	2015			2017			2016			2015			2017			2016			2015			2017			2016			2015
	(millions of euros)
Third-party revenues		15,328			14,971			14,960			4,500			4,044			4,634					82			—			10			43			—			—			—			19,828			19,025			19,719
Intragroup revenues		26			35			41			2			3			3					—			—			1			6			(28	)		(39	)		(50	)		—			—			—
Revenues by operating segment		15,354			15,006			15,001			4,502			4,047			4,637					82			—			11			49			(28	)		(39	)		(50	)		19,828			19,025			19,719
Other income		471			259			258			52			51			21					4			—			1			4			—			—			—			523			311			287
Total operating revenues and other income		15,825			15,265			15,259			4,554			4,098			4,658					86			—			12			53			(28	)		(39	)		(50	)		20,351			19,336			20,006
Acquisition of goods and services		(6,235	)		(5,785	)		(6,046	)		(2,168	)		(2,028	)		(2,443	)				(33	)		(4	)		(9	)		(48	)		19			29			38			(8,388	)		(7,793	)		(8,532	)
Employee benefits expenses		(3,266	)		(2,759	)		(3,206	)		(353	)		(336	)		(349	)				(4	)		(7	)		(11	)		(30	)		—			—			—			(3,626	)		(3,106	)		(3,589	)
of which: accruals to employee severance indemnities		(6	)		(1	)		(1	)		—			—			—					—			—			—			—			—			—			—			(6	)		(1	)		(1	)
Other operating expenses		(704	)		(574	)		(999	)		(500	)		(505	)		(470	)				(12	)		(5	)		(2	)		(11	)		1			(2	)		1			(1,208	)		(1,083	)		(1,491	)
of which: write-downs and expenses in connection with credit management and provision charges		(468	)		(317	)		(506	)		(160	)		(162	)		(149	)				(12	)		—			—			(8	)		—			—			—			(628	)		(479	)		(675	)
Change in inventories		41			16			3			(6	)		1			(33	)				—			—			(8	)		(15	)		—			—			1			35			9			(44	)
Internally generated assets		510			535			556			108			95			88					—			—			—						8			9			12			626			639			656
Depreciation and amortization		(3,360	)		(3,310	)		(3,205	)		(1,114	)		(980	)		(909	)				(23	)		—			—			—			1			(1	)		2			(4,473	)		(4,291	)		(4,135	)
Gains (losses) on disposals of non-current assets		(2	)		(9	)		—			14			23			336					—			—			—			—			(1	)		—			—			11			14			336
Impairment reversals (losses) on non-current assets		(37	)		(3	)		(3	)		—			—			(240	)				—			—			—			(1	)		—			—			—			(37	)		(3	)		(244	)
Operating profit (loss)		2,772			3,376			2,359			535			368			638					14			(16	)		(18	)		(52	)		—			(4	)		4			3,291			3,722			2,963
Share of profits (losses) of associates and joint ventures accounted for using the equity method		(1	)		(23	)		1			—			—			—					—			—			—			—			—			—			—			(1	)		(23	)		1
Other income (expenses) from investments																																											(18	)		7			10
Finance income																																											1,808			2,543			2,760
Finance expenses																																											(3,303	)		(3,450	)		(5,281	)
Profit (loss) before tax from continuing operations																																											1,777			2,799			453
Income tax expense																																											(490	)		(880	)		(403	)
Profit (loss) from continuing operations																																											1,287			1,919			50
Profit (loss) from Discontinued operations/Non-current assets held for sale																																											—			47			611
Profit (loss) for the year																																											1,287			1,966			661
Attributable to:
Owners of the Parent																																											1,121			1,808			(70	)
Non-controlling interests																																											166			158			731

Revenues by Operating Segment

REVENUES BY OPERATING SEGMENT

	Domestic								Brazil						Media				Other operations						Adjustments and eliminations									Consolidated Total
	2017		2016			2015			2017		2016		2015		2017	2016	2015		2017		2016		2015		2017			2016			2015			2017		2016			2015
	(millions of euros)
Revenues from equipment sales—third party		1,350		1,136			956			210		232		475				—		—		10		43		—			—			—			1,560		1,378			1,474
Revenues from equipment sales—intragroup		—		—			—			1		—		—				—		—		1		5		(1	)		(1	)		(5	)		—		—			—
Total revenues from equipment sales		1,350		1,136			956			211		232		475				—		—		11		48		(1	)		(1	)		(5	)		1,560		1,378			1,474
Revenues from services—third party		13,974		13,843			14,017			4,290		3,812		4,159				82		—		—		—		—			—			—			18,264		17,655			18,258
Revenues from services—intragroup		26		35			41			1		3		3				—		—		—		1		(27	)		(38	)		(45	)		—		—			—
Total revenues from services		14,000		13,878			14,058			4,291		3,815		4,162				82		—		—		1		(27	)		(38	)		(45	)		18,264		17,655			18,258
Revenues on construction contracts—third party		4		(8	)		(13	)		—		—		—				—		—		—		—		—			—			—			4		(8	)		(13	)
Revenues on construction contracts—intragroup		—		—			—			—		—		—				—		—		—		—		—			—			—			—		—			—
Total revenues on construction contracts		4		(8	)		(13	)		—		—		—				—		—		—		—		—			—			—			4		(8	)		(13	)
Total third-party revenues		15,328		14,971			14,960			4,500		4,044		4,634				82		—		10		43		—			—			—			19,828		19,025			19,719
Total intragroup revenues		26		35			41			2		3		3				—		—		1		6		(28	)		(39	)		(50	)		—		—			—
Total revenues by operating segment		15,354		15,006			15,001			4,502		4,047		4,637				82		—		11		49		(28	)		(39	)		(50	)		19,828		19,025			19,719

Purchase of Intangible and Tangible Assets by Operating Segment

PURCHASE OF INTANGIBLE AND TANGIBLE ASSETS BY OPERATING SEGMENT

	Domestic						Brazil						Media				Other operations						Adjustments and eliminations						Consolidated Total
	2017		2016		2015		2017		2016		2015		2017	2016	2015		2017		2016		2015		2017		2016		2015		2017		2016		2015
	(millions of euros)
Purchase of intangible assets		1,763		1,113		1,454		529		528		505				—		—		—		—		—		—		—		2,292		1,641		1,959
Purchase of tangible assets		2,842		2,792		3,632		635		675		1,121				8		—		—		—		—		—		—		3,477		3,467		4,761
Purchase of intangible and tangible assets		4,605		3,905		5,086		1,164		1,203		1,626				8		—		—		—		—		—		—		5,769		5,108		6,720
of which capital expenditures		4,551		3,709		3,900		1,150		1,167		1,289				8		—		—		—		—		—		—		5,701		4,876		5,197
of which change in finance leasing contracts		54		196		1,186		14		36		337				—		—		—		—		—		—		—		68		232		1,523

Summary of Headcount by Operating Segment

HEADCOUNT BY OPERATING SEGMENT

Domestic

Brazil

Other operations

Consolidated Total

As of December 31, 2017

As of December 31, 2016

As of December 31, 2017

As of December 31, 2016

As of December 31, 2017

As of December 31, 2016

As of December 31, 2017

As of December 31, 2016

(number of employees)

Headcount

49,851

51,280

9,508

9,849

70

100

59,429

61,229

Assets and Liabilities by Operating Segment

ASSETS AND LIABILITIES BY OPERATING SEGMENT

	Domestic				Brazil				Other operations					Adjustments and eliminations						Consolidated Total
	As of December 31, 2017		As of December 31, 2016		As of December 31, 2017		As of December 31, 2016		As of December 31, 2017			As of December 31, 2016		As of December 31, 2017			As of December 31, 2016			As of December 31, 2017		As of December 31, 2016
	(millions of euros)
Non-current operating assets		48,850		47,428		6,769		7,711		3			5		1			1			55,623		55,145
Current operating assets		4,363		4,472		898		1,209		(2	)		16		(10	)		(1	)		5,249		5,696
Total operating assets		53,213		51,900		7,667		8,920		1			21		(9	)		—			60,872		60,841
Investments accounted for using the equity method		17		18		—		—		—			—		—			—			17		18
Discontinued operations /Non-current assets held for sale																					—		—
Unallocated assets																					7,894		9,587
Total Assets																					68,783		70,446
Total operating liabilities		9,829		8,968		1,855		2,397		58			57		(26	)		(16	)		11,716		11,406
Liabilities directly associated with Discontinued operations/Non-current assets held for sale																					—		—
Unallocated liabilities																					33,284		35,487
Equity																					23,783		23,553
Total Equity and liabilities																					68,783		70,446

Reporting by Geographical Area

b) Reporting by geographical area

		Revenues												Non-current operating assets
		Breakdown by location of operations						Breakdown by location of customers						Breakdown by location of operations
		2017		2016		2015		2017		2016		2015		As of December 31, 2017		As of December 31, 2016
		(millions of euros)
Italy	(A)		15,015		14,635		14,743		14,064		13,657		13,772		48,591		46,948
Outside Italy	(B)		4,813		4,390		4,976		5,764		5,368		5,947		7,032		8,197
Total	(A+B)		19,828		19,025		19,719		19,828		19,025		19,719		55,623		55,145

XML

Related Party Transactions and Direction and Coordination Activity (Tables)

12 Months Ended

Dec. 31, 2017

Summary of Separate Consolidated Income Statement

The effects on the individual line items of the Group’s separate consolidated income statements for the years 2017, 2016 and 2015 are as follows:

Separate consolidated income statement line items 2017

			Related parties
	Total (a)		Controlling Entity		Associates, subsidiaries of associates and joint ventures		Other related parties (*)		Pension funds		Key managers		Total related parties (b)		% on line item (b/a)
	(millions of euros)
Revenues		19,828		—		3		115						118		0.6
Other income		523		—		4		4						8		1.5
Acquisition of goods and services		8,388		—		22		170						192		2.3
Employee benefits expenses		3,626		—		—		1		74		37		112		3.1
Finance income		1,808		—		—		45						45		2.5
Finance expenses		3,303		—		11		38						49		1.5

(*) Vivendi group (excluding Vivendi) and Companies belonging to the group that it belongs to; other related parties both through directors, statutory auditors and key managers (or executive officers under US rules) and as participants in shareholders’ agreements pursuant to Article 122 of the Consolidated Law on Finance. According to Italian Rules, statutory auditors are considered related parties.

Separated consolidated income statement line items 2016

			Related parties
	Total (a)		Associates, subsidiaries of associates and joint ventures			Other related parties (*)		Pension funds		Key managers		Total related parties		Transactions of Discontinued Operations			Total related parties net of Discontinued Operations (b)		% on line item (b/a)
	(millions of euros)
Revenues		19,025		10			355						365		(23	)		342		1.8
Other income		311					1						1					1		0.3
Acquisition of goods and services		7,793		21			231						252		(14	)		238		3.1
Employee benefits expenses		3,106					2		83		36		121					121		3.9
Other operating expenses		1,083					1						1					1		0.1
Finance income		2,543					108						108					108		4.2
Finance expenses		3,450					114						114					114		3.3
Profit (loss) from Discontinued operations/Non-current assets held for sale		47		(1	)		10						9

(*) Other related parties both through directors, statutory auditors and key managers (or executive officers under US rules) and as participants in shareholders’ agreements pursuant to Article 122 of the Consolidated Law on Finance. According to Italian Rules, statutory auditors are considered related parties.

Separate consolidated income statement line items 2015

			Related parties
	Total (a)		Associates, subsidiaries of associates and joint ventures			Other related parties (*)		Pension funds		Key managers		Total related parties		Transactions of Discontinued Operations			Total related parties net of Discontinued Operations (b)		% on line item (b/a)
	(millions of euros)
Revenues		19,719		6			605						611		(187	)		424		2.2
Other income		287					1						1					1		0.3
Acquisition of goods and services		8,532		39			323						362		(111	)		251		2.9
Employee benefits expenses		3,589					15		86		14		115		(12	)		103		2.9
Other operating expenses		1,491					1						1					1		0.1
Finance income		2,760					123						123					123		4.5
Finance expenses		5,281		5			92						97					97		1.8
Profit (loss) from Discontinued operations/Non-current assets held for sale		611		(13	)		77						64

(*) Other related parties both through directors, statutory auditors and key managers (or executive officers under US rules) and as participants in shareholders’ agreements pursuant to Article 122 of the Consolidated Law on Finance. According to Italian Rules, statutory auditors are considered related parties.

Summary of Consolidated Statement of Financial Position

The effects on the individual line items of the consolidated statements of financial position at December 31, 2017 and at December 31, 2016 are as follows:

Consolidated statement of financial position line items at December 31, 2017

				Related parties
	Total (a)			Controlling Entity	Associates, subsidiaries of associates and joint ventures		Other related parties (*)			Pension funds		Total related parties (b)			% on line item (b/a)
	(millions of euros)
Non-current financial assets		(1,768	)										—
Securities other than investments (current assets)		(993	)					(15	)				(15	)		1.5
Financial receivables and other current financial assets		(437	)					(38	)				(38	)		8.7
Cash and cash equivalents		(3,575	)										—
Current financial assets		(5,005	)					(53	)				(53	)		1.1
Non-current financial liabilities		28,108						100					100			0.4
Current financial liabilities		4,756						163					163			3.4
Trade and miscellaneous receivables and other current assets		4,959				3		33					36			0.7
Trade and miscellaneous payables and other current liabilities		7,520				3		33			24		60			0.8

(*) Vivendi group and Companies belonging to the group that it belongs to; other related parties both through directors, statutory auditors and key managers (or executive officers under US rules) and as participants in shareholders’ agreements pursuant to Article 122 of the Consolidated Law on Finance. According to Italian Rules, statutory auditors are considered related parties.

Consolidated statement of financial position line items at December 31, 2016

				Related parties
	Total (a)			Associates, subsidiaries of associates and joint ventures			Other related parties (*)			Pension funds		Total related parties			Transactions of Discontinued Operations	Total related parties net of Discontinued Operations (b)			% on line item (b/a)
	(millions of euros)
Non-current financial assets		(2,698	)		(12	)		(520	)				(532	)			(532	)		19.7
Securities other than investments (current assets)		(1,519	)					(110	)				(110	)			(110	)		7.2
Financial receivables and other current financial assets		(389	)					(22	)				(22	)			(22	)		5.7
Cash and cash equivalents		(3,964	)					(621	)				(621	)			(621	)		15.7
Current financial assets		(5,872	)					(753	)				(753	)			(753	)		12.8
Non-current financial liabilities		30,469						912					912				912			3.0
Current financial liabilities		4,056						133					133				133			3.3
Trade and miscellaneous receivables and other current assets		5,426			9			127					136				136			2.5
Miscellaneous payables and other non-current liabilities		1,607						2					2				2			0.1
Trade and miscellaneous payables and other current liabilities		7,646			37			200			26		263				263			3.4

(*) Other related parties both through directors, statutory auditors and key managers (or executive officers under US rules) and as participants in shareholders’ agreements pursuant to Article 122 of the Consolidated Law on Finance. According to Italian Rules, statutory auditors are considered related parties.

Summary of Consolidated Statement of Cash Flows

The effects on the relevant line items of the consolidated statements of cash flows for the years 2017, 2016 and 2015 are as follows:

Consolidated statement of cash flows line items 2017

			Related parties
	Total (a)		Controlling Entity	Associates, subsidiaries of associates and joint ventures		Other related parties (*)	Pension funds	Total related parties (b)		% on line item (b/a)
	(millions of euros)
Purchase of intangible and tangible assets on an accrual basis		5,769			135				135		2.3

(*) Vivendi group and Companies belonging to the group that it belongs to; other related parties both through directors, statutory auditors and key managers (or executive officers under US rules) and as participants in shareholders’ agreements pursuant to Article 122 of the Consolidated Law on Finance. According to Italian Rules, statutory auditors are considered related parties.

Consolidated statement of cash flows line items 2016

Related parties

Total (a)

Associates, subsidiaries of associates and joint ventures

Other related parties (*)

Pension funds

Total related parties

Transactions of Discontinued Operations

Total related parties net of Discontinued Operations (b)

% on line item (b/a)

(millions of euros)

Purchase of intangible and tangible assets on an accrual basis

5,108

159

159

159

3.1

(*) Other related parties both through directors, statutory auditors and key managers (or executive officers under US rules) and as participants in shareholders’ agreements pursuant to Article 122 of the Consolidated Law on Finance. According to Italian Rules, statutory auditors are considered related parties.

Consolidated statement of cash flows line items 2015

				Related parties
	Total (a)			Associates, subsidiaries of associates and joint ventures		Other related parties (*)			Pension funds	Total related parties			Transactions of Discontinued Operations			Total related parties net of Discontinued Operations (b)		% on line item (b/a)
	(millions of euros)
Purchase of intangible and tangible assets on an accrual basis		6,720			160		22				182			(2	)		180		2.7
Cash flows from (used in) Discontinued operations/Non-current assets held for sale		(19	)				(2	)			(2	)

(*) Other related parties both through directors, statutory auditors and key managers (or executive officers under US rules) and as participants in shareholders’ agreements pursuant to Article 122 of the Consolidated Law on Finance. According to Italian Rules, statutory auditors are considered related parties.

Summary of Employee Benefits Expenses

Separate consolidated income statements line items

	2017			2016		2015		Type of contract
	(millions of euros)
Employee benefits expenses								Contributions to pension funds
Fontedir		10			11		11
Telemaco		67			69		70
Other pension funds		(3	)		3		5
Total employee benefits expenses		74			83		86

Consolidated statement of financial position line items

	As of December 31, 2017		As of December 31, 2016		Type of contract
	(millions of euros)
Trade and miscellaneous payables and other current liabilities					Payables for contributions to pension funds
Fontedir		3		4
Telemaco		21		21
Other pension funds		—		1
Total trade and miscellaneous payables and other current liabilities		24		26

Summary of Remuneration to Key Managers

In 2017, the total remuneration recorded on an accrual basis by TIM or by companies controlled by the Group in respect of key managers amounted to 37.0 million euros (36.1 million euros in 2016). The figure breaks down as follows:

	2017			2016			2015
	(millions of euros)
Short-term remuneration		10.4	(1)		13.1	(4)		11.4	(5)
Long-term remuneration		0.1	(2)		1.9
Employment termination benefit incentives		25.5			12.0	(5)
Share-based payments (*)		1.0	(3)		9.1	(6)		2.5	(7)
		37.0			36.1			13.9

(*) These refer to the fair value of the rights, accrued to December 31, under the share-based incentive plans of TIM S.p.A. and its subsidiaries (2014/2016 Stock Option Plan, Special Award, and Stock Option Plans of the South American subsidiaries).

(1) of which 1.6 million recorded by Latin American subsidiaries.

(2) of which 0.1 million recorded by Latin American subsidiaries.

(3) of which 1.0 million recorded by Latin American subsidiaries.

(4) of which 1.1 million recorded by Latin American subsidiaries.

(5) of which 0.6 million recorded by Latin American subsidiaries.

(6) of which 0.2 million recorded by Latin American subsidiaries.

(7) of which 0.4 million recorded by Latin American subsidiaries.

Entities with joint control or significant influence over entity [member]

Summary of Separate Consolidated Income Statement

Separate consolidated income statement line items

	2017		2016		2015		Type of contract
	(millions of euros)
Revenues
Asscom S.r.l.		1		1		—	Insurance brokerage
Italtel group		1		7		1	Provision of equipment rental, fixed and mobile telephone and outsourced communication services
NordCom S.p.A.		1		1		1	Fixed and mobile voice services, data network connections and outsourced, I.C.T. products and services
Teleleasing S.p.A. (in liquidation)		—		—		3	Sale of equipment and maintenance services
Other minor companies		—		1		1
Total revenues		3		10		6
Other income		4		—		—	Contributionsgoverned by partnership agreements and penalties with respect to the Italtel group.
Acquisition of goods and services
Italtel group		17		16		37	Supply and maintenance of switching equipment, software development and platforms upgrading, and customized products and services, as part of TIM offerings to the Italtel group customers, and extension of professional services for the new Multimedia Video Data Center for the provision of the TIM Vision service
NordCom S.p.A.		—		1		1	Supply and development of IT solutions, provision of customized services as part of TIM offerings to end customers, and rental expense for base transceiver station housing
Teleleasing S.p.A. (in liquidation)		—		—		1	Purchase of goods assigned under leasing arrangements with TIM customers
W.A.Y. S.r.l.		4		4		—	Supply and installation of geolocation equipment and provision of related technical support services within the TIM customer offering
Other minor companies		1		—		—
Totalacquisition of goods and services		22		21		39
Financeexpenses		11		—		5	Write-downof the financial receivable due from Alfiere. Interest expenses for equipment lease and finance leases with Teleleasing S.p.A.

Summary of Consolidated Statement of Financial Position

Consolidated statement of financial position line items

	As of December 31, 2017		As of December 31, 2016		Type of contract
	(millions of euros)
Non-current financial assets		—		12	Shareholder loans to Alfiere S.p.A
Trade and miscellaneous receivables and other current assets
Alfiere S.p.A.		1		—	Contracts for project management, administration, corporate and compliance services, and sundry chargebacks.
Italtel group		—		6	Provision of equipment rental, fixed and mobile telephone and outsourced communication services
W.A.Y. S.r.l.		1		1	Supply of fixed-line telephony, ICT and mobile services
Other minor companies		1		2
Total trade and miscellaneous receivables and other current assets		3		9
Trade and miscellaneous payables and other current liabilities
Italtel group		—		33	Supply transactions connected with investment and operations activities
Movenda S.p.A.		1		1	SIM-card supply and certification and functional development of IT platforms.
NordCom S.p.A.		—		1	Supply and development of IT solutions, provision of customized services as part of TIM offerings to end customers, and rental expense for base transceiver station housing
W.A.Y. S.r.l.		1		2	Supply and installation of geolocation equipment and related technical support services within the TIM customer offering
Other minor companies		1		—
Total trade and miscellaneous payables and other current liabilities		3		37

Summary of Consolidated Statement of Cash Flows

Consolidated statement of cash flows line items

	2017		2016		2015		Type of contract
	(millions of euros)
Purchase of intangible and tangible assets on an accrual basis
Italtel group		132		157		158	Purchases of telecommunications equipment
Movenda S.p.A.		2		2		1	Information technology services and licenses for Mobile Connect Cardlets
Other minor companies		1		—		1
Total purchase of intangible and tangible assets on an accrual basis		135		159		160

Other related parties [member]

Summary of Separate Consolidated Income Statement

The most significant amounts are summarized as follows:

Separate consolidated income statement line items

	2017		2016		2015			Type of contract
	(millions of euros)
Revenues
Generali group		12		47		109		Supply of telephone and data transmission services, peripheral data networks, connections, storage and telecommunications products and services
Intesa Sanpaolo group		31		64		68		Telephone services, MPLS data and international network, ICT services and Microsoft licenses, Internet connectivity and high-speed connections
Mediobanca group		4		7		6		Telephone services, sale of equipment, outsourced data network services, Internet accesses and software licenses.
RCS Media Group		—		2		1		Fixed-line telephony service
Telefonica group		67		235		421		Interconnection services, roaming, broadband access fees, supply of “IRU” transmission capacity and software
Other minor companies		1		—		—
Total revenues		115		355		605
Total other income		4		1		1		Generali group damage compensation
Acquisition of goods and services
CartaSi group		—		—		5		Commissions on collections and top-up services for prepaid mobile users.
Havas group		91		—		—		Purchase of media space on behalf of the TIM Group and, to a lesser extent, study and implementation of advertising campaigns
Generali group		7		21		25		Insurance premiums and property leases
Intesa Sanpaolo group		5		11		11		Factoring fees, fees for smart card top-ups/activation and commissions for payment of telephone bills by direct debit and collections via credit cards
Mediobanca group		1		1		1		Credit recovery activities
RCS Media Group		—		1		—		Provision of content and digital publishing services and fees for telephone top-up services
Telefonica group		57		188		279		Interconnection and roaming services, site sharing, co-billing agreements, broadband line sharing and unbundling
Vivendi group		9		8		1		Purchase of musical and television digital content (TIMmusic and TIMvision) and supply of D&P cloud-based games (TIMgames).
Other minor companies				1		1
Total acquisition of goods and services		170		231		323
Employee benefits expenses		1		2		15		Generali group insurance related to the work of personnel
Other operating expenses		—		1		1		Expenses for penalties and contractual breaches towards the Intesa Sanpaolo group
Other income (expenses) from investments		—		—		(4	)	Loss related to the sale of Teleleasing S.p.A. to the Mediobanca group
Finance income
Intesa Sanpaolo group		27		83		96		Bank accounts, deposits and hedging derivatives
Mediobanca group		15		18		18		Bank accounts, deposits and hedging derivatives
Telefonica group		3		7		9		Finance leases
Total finance income		45		108		123
Finance expenses
Intesa Sanpaolo group		23		87		68		Term Loan Facility, Revolving Credit Facility, hedging derivatives, loans and bank accounts.
Mediobanca group		15		26		24		Term Loan Facility, Revolving Credit Facility and hedging derivatives
Telefonica group		—		1		—		Loss on sale of securities held in portfolio
Total finance expenses		38		114		92

Summary of Consolidated Statement of Financial Position

Consolidated statement of financial position line items

	As of December 31, 2017		As of December 31, 2016		Type of contract
	(millions of euros)
Non-current financial assets
Mediobancagroup		—		80	Hedging derivatives
FormerTelco Companies		—		440	Hedging derivatives, Finance lease
Total Non-current financial assets		—		520
Securities other than investments (current assets)
Mediobancagroup		15		81	Bonds
FormerTelco Companies		—		24	Bonds
Vivendigroup		—		5	Bonds
Total securities other than investments (current assets)		15		110
Financial receivables and other current financial assets
MediobancaGroup		38		1	Hedging derivatives
FormerTelco Companies		—		21	Hedging derivatives, Finance lease
Total financial receivables and other current financial assets		38		22	Hedging derivatives, loans, financing and finance lease
Cash and cash equivalents		—		621	Bank accounts and deposits.
Non-current financial liabilities
MediobancaGroup		100		364	Hedging derivatives, loans, financing and finance lease
FormerTelco Companies		—		548	Hedging derivatives and loans
Total Non-current financial liabilities		100		912
Current financial liabilities
MediobancaGroup		163		91	Hedging derivatives and loans
FormerTelco Companies		—		42	Current accounts, hedging derivatives and payables to other lenders
Total Current financial liabilities		163		133

Consolidated statement of financial position line items

	As of December 31, 2017		As of December 31, 2016		Type of contract
Trade and miscellaneous receivables and other current assets
Other Directors		3		—	Phone services and prepaid card recharges
Havas group		29		—	Purchase of media space on behalf of the TIM Group and, to a lesser extent, study and implementation of advertising campaigns.
Mediobanca Group		—		1	Telephone and MPLS data network services and sale of data devices and equipment for fixed and mobile networks.
Former Telco Companies		—		126	Supply of telephone and data transmission services, peripheral data networks, connections, storage, and telecommunications products and services Factoring services, supply of telephone, MPLS and international data network services, ICT services, Microsoft licenses, Internet connectivity and high-speed connections
Other minor companies		1		—
Total trade and miscellaneous receivables and other current assets		33		127
Miscellaneous payables and other non-current liabilities		—		2
Trade and miscellaneous payables and other current liabilities
Havas group		30		—	Purchase of media space on behalf of the TIM Group and, to a lesser extent, study and implementation of advertising campaigns
Mediobanca group		1		13	Credit recovery activities.
Former Telco Companies		—		183	Factoring fees, payable resulting from the collection of receivables sold, fees for smart card top-ups/activation and commissions for payment of telephone bills by direct debit and collections via credit cards
Vivendi group		2		4	Purchase of musical and television digital content (TIM MUSIC and TIM VISION)
Total trade and miscellaneous payables and other current liabilities		33		200

Summary of Consolidated Statement of Cash Flows

Consolidated statement of cash flows line items

	2017		2016		2015		Type of contract
	(millions of euros)
Purchase of intangible and tangible assets on an accrual basis		—		—		22	Acquisition of transmission capacity with the Telefónica group

Vivendi group [member]

Summary of Key Figures Taken from Latest Approved Financial Statements

42 Avenue de Friedland—PARIS

		12/31/2016
		(millions of euros)
STATEMENT OF FINANCIAL POSITION
Other non-current assets			20,196.0
Current assets			6,878.4
Prepaid expenses			9.5
TOTAL ASSETS			27,083.9
EQUITY			18,854.8
Share capital	7,079.0
Reserves	9,804.9
Retained earnings (Accumulated losses), including profit (loss) for the year	1,970.9
Provisions			809.3
Liabilities			7,392.5
Unrealized exchange gains			27.3
TOTAL EQUITY AND LIABILITIES			27,083.9
INCOME STATEMENT
Revenues			46.0
EBIT			(110.4	)
Net financial income			862.1
Profit (loss) before extraordinary items and tax			751.7
Net extraordinary income			802.1
Income tax (expense)/return			55.7
Profit (loss) for the year			1,609.5

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Equity Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Fair Value Measurement of the Granted Options and Rights

Parameters used to determine fair value—Tim Participações S.A.

Plans/Parameters	Exercise price (reais)		Volatility		Period		Expected dividends (reais)		Risk-free interest rate
Stock option plan 2011		8.84		51.73%		6 years		—		11.94% per annum
Stock option plan 2012		8.96		50.46%		6 years		—		8.89% per annum
Stock option plan 2013		8.13		48.45%		6 years		—		10.66% per annum
Stock option plan 2014		13.42		44.6%		6 years		—		10.66% per annum
Stock option plan 2015		8.45		35.5%		6 years		—		16.10% per annum
Stock option plan 2016		8.10		36.70%		6 years		—		11.73% per annum

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Other Information (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Summary of Exchange Rates Used to Convert the Financial Statements of Foreign Operations

Exchange rates used to convert the financial statements of foreign operations (*)

	Year-end exchange rates (statements of financial position items)						Average exchange rates for the year (income statements and statements of cash flows items)
(Local Currency against 1 euro)	12/31/2017		12/31/2016		12/31/2015		Year 2017		Year 2016		Year 2015
Europe
BGN Bulgarian Lev		1.95580		1.95580		1.95580		1.95580		1.95580		1.95580
CZK Czech Koruna		25.53500		27.02100		27.02300		26.32656		27.03443		27.28277
CHF Swiss Franc		1.17020		1.07390		1.08350		1.11171		1.09004		1.06813
TRY Turkish Lira		4.54640		3.70720		3.17650		4.12109		3.34284		3.02349
GBP Pound Sterling		0.88723		0.85618		0.73395		0.87640		0.81905		0.72612
RON Romanian Leu		4.65850		4.53900		4.52400		4.56884		4.49053		4.44555
RUB Russian Ruble		69.39200		64.30000		80.67400		65.90160		74.15831		68.03509
North America
USD U.S. Dollar		1.19930		1.05410		1.08870		1.12946		1.10666		1.10970
Latin America
VEF Venezuelan Bolivar		16.19055		14.23035		14.69745		15.18018		14.90133		13.71398
BOB Bolivian		8.28720		7.28383		7.52292		7.80453		7.64702		7.66808
PEN Peruvian Nuevo Sol		3.88540		3.54020		3.70833		3.68247		3.73505		3.53192
ARS Argentinean Peso		22.93100		16.74880		14.09720		18.73314		16.33204		10.26890
CLP Chilean Peso		737.29000		704.94500		772.71300		732.28973		748.49536		726.01073
COP Colombian Peso		3,580.19000		3,169.49000		3,456.01000		3,334.88410		3,376.68116		3,046.29559
BRL Brazilian Real		3.96728		3.43542		4.25116		3.60584		3.85935		3.69727
Other countries
ILS Israeli Shekel		4.16350		4.04770		4.24810		4.06091		4.24812		4.31323

(*) Source: data processed by the European Central Bank, Reuters and major Central Banks.

Summary of Research and Development

Research and development

Expenditures for research and development activities are represented by external costs, labor costs of dedicated staff and depreciation and amortization. Details are as follows:

	2017		2016		2015
	(millions of euros)
Research and development costs expensed during the year		43		44		52
Development costs capitalized		1,949		1,704		1,668
Total research and development costs (expensed and capitalized)		1,992		1,748		1,720

Summary of the Amount of Lease Installments Receivables

At December 31, 2017 and 2016 the amount of lease installments receivables is as follows:

	At December 31, 2017		At December 31, 2016
	(millions of euros)
Within 1 year		124		118
From 2 to 5 years		238		247
Beyond 5 years		98		128
Total		460		493

Summary of the Amount of Lease Installments Payables

At December 31, 2017 and 2016 the amount of lease installments payables is as follows:

	At December 31, 2017		At December 31, 2016
	(millions of euros)
Within 1 year		177		175
From 2 to 5 years		298		287
Beyond 5 years		60		39
Total		535		501

XML

List of Companies of the Tim Group (Tables)

12 Months Ended

Dec. 31, 2017

Text block1 [abstract]

Summary of List of Companies of the Tim Group

The following is indicated for each company: name, head office, country and share capital in the original currency, in addition to the percentage holding of share capital, the percentage of voting rights in the ordinary shareholders’ meeting if different than the percentage holding of share capital, and which companies hold the investment.

TIM Group

Name

Head Office

Currency

Share Capital

% ownership

% of voting rights

Held by

PARENT COMPANY

TIM S.p.A.

MILAN

EUR

11,677,002,855

(ITALY)

Subsidiaries consolidated line-by-line

DOMESTIC BUSINESS UNIT

4G RETAIL S.r.l.

MILAN

EUR

2,402,241

100.0000

TIM S.p.A.

(sale of fixed and mobile telecommunications products and services and all analog and digital broadcasting equipment)

(ITALY)

ADVANCED CARING CENTER S.r.l.

ROME

EUR

600,000

100.0000

TELECONTACT CENTER S.p.A.

(telemarketing, market research and surveys activities and development)

(ITALY)

ALFABOOK S.r.l.

TURIN

EUR

100,000

100.0000

OLIVETTI S.p.A.

(on-line sale of digital texts)

(ITALY)

CD FIBER S.r.l.

ROME

EUR

50,000

100.0000

TIM S.p.A.

(design, construction, maintenance and management of network infrastructure services and high-speed electronic communication systems)

(ITALY)

FLASH FIBER S.r.l.

MILAN

EUR

30,000

80.000

TIM S.p.A.

(development, implementation, maintenance and supply of the fiber network in Italy)

(ITALY)

H.R. SERVICES S.r.l.

L’AQUILA

EUR

500,000

100.0000

TIM S.p.A.

(personnel training and services)

(ITALY)

INFRASTRUTTURE WIRELESS ITALIANE S.p.A..

MILAN

EUR

600,000,000

60.0333

TIM S.p.A.

(installation and operation of installations and infrastructure for the management and the sale of telecommunications services)

(ITALY)

MED-1 SUBMARINE CABLES Ltd

RAMAT GAN

ILS

55,886,866

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(construction and management of submarine cable Lev1)

(ISRAEL)

NOVERCA S.r.l.

ROME

EUR

10,000

100.0000

TIM S.p.A.

(development and provision of services in the TLC and multimedia sector in Italy and abroad)

(ITALY)

OLIVETTI S.p.A.

IVREA

EUR

10,000,000

100.0000

TIM S.p.A.

(production and sale of office equipment and information technology services)

(TURIN— ITALY)

PERSIDERA S.p.A.

ROME

EUR

21,428,572

70.0000

TIM S.p.A.

(purchase, sale and maintenance of systems for repair work and radio and television broadcasting)

(ITALY)

TELECOM ITALIA SAN MARINO S.p.A.

BORGO MAGGIORE

EUR

1,808,000

100.0000

TIM S.p.A.

(San Marino telecommunications management)

(REPUBLIC OF SAN MARINO)

TELECOM ITALIA SPARKLE S.p.A.

ROME

EUR

200,000,000

100.0000

TIM S.p.A.

(completion and management of telecommunications services for public and private use)

(ITALY)

TELECOM ITALIA TRUST TECHNOLOGIES S.r.l.

POMEZIA

EUR

7,000,000

100.0000

TIM S.p.A.

(other operations related to non-classified IT services)

(ROME— ITALY)

TELECOM ITALIA VENTURES S.r.l.

MILAN

EUR

10,000

100.0000

TIM S.p.A.

(investment holding company)

(ITALY)

TELECONTACT CENTER S.p.A.

NAPLES

EUR

3,000,000

100.0000

TIM S.p.A.

(telemarketing services)

(ITALY)

TELEFONIA MOBILE SAMMARINESE S.p.A.

BORGO MAGGIORE

EUR

78,000

51.0000

TELECOM ITALIA SAN MARINO S.p.A.

(development and management of mobile telecommunications plants and services)

(REPUBLIC OF SAN MARINO)

TELENERGIA S.r.l.

ROME

EUR

50,000

100.0000

TIM S.p.A.

(import, export, purchase, sale and trade of electricity)

(ITALY)

TELSY ELETTRONICA E TELECOMUNICAZIONI S.p.A.

TURIN

EUR

390,000

100.0000

TIM S.p.A.

(production and sale of equipment and systems for crypto telecommunications)

(ITALY)

TI SPARKLE AMERICAS Inc.

MIAMI

USD

10,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(managed bandwidth services)

(USA)

TI SPARKLE ARGENTINA S.A.

BUENOS AIRES

ARS

9,998,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(managed bandwidth services)

(ARGENTINA)

TI SPARKLE AUSTRIA GmbH

VIENNA

EUR

2,735,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(AUSTRIA)

TI SPARKLE BELGIUM S.P.R.L.—B.V.B.A

BRUSSELS

EUR

2,200,000

99.9999

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(BELGIUM)

0.0001

TI SPARKLE UK Ltd

TI SPARKLE BOLIVIA SRL

LA PAZ

BOB

1,747,600

99.9999

TELECOM ITALIA SPARKLE S.p.A.

(managed bandwidth services)

(BOLIVIA)

0.0001

TI SPARKLE AMERICAS Inc.

TI SPARKLE BRASIL PARTICIPACOES Ltda

RIO DE JANEIRO

BRL

71,563,866

99.9999

TELECOM ITALIA SPARKLE S.p.A.

(investment holding company)

(BRAZIL)

0.0001

TI SPARKLE AMERICAS Inc.

TI SPARKLE BRASIL TELECOMUNICACIONES Ltda

RIO DE JANEIRO

BRL

69,337,363

99.9999

TI SPARKLE BRASIL PARTICIPACOES Ltda

(managed bandwidth services)

(BRAZIL)

0.0001

TI SPARKLE AMERICAS Inc.

TI SPARKLE BULGARIA EOOD

SOFIA

BGN

100,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(BULGARIA)

TI SPARKLE CHILE S.p.A.

SANTIAGO

CLP

5,852,430,960

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(managed bandwidth services)

(CHILE)

TI SPARKLE COLOMBIA Ltda

BOGOTA’

COP

5,246,906,000

99.9999

TELECOM ITALIA SPARKLE S.p.A.

(managed bandwidth services)

(COLOMBIA)

0.0001

TI SPARKLE AMERICAS Inc.

TI SPARKLE CZECH S.R.O.

PRAGUE

CZK

6,720,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(CZECH REPUBLIC)

TI SPARKLE FRANCE S.A.S.

PARIS

EUR

18,295,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(installation and management of telecommunications services for fixed network and related activities)

(FRANCE)

TI SPARKLE GERMANY GmbH

FRANKFURT

EUR

25,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(GERMANY)

TI SPARKLE GREECE S.A.

ATHENS

EUR

368,760

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(GREECE)

TI SPARKLE ISRAEL Ltd

RAMAT GAN

ILS

1,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(international wholesale telecommunication services)

(ISRAEL)

TI SPARKLE MED S.p.A.

ROME

EUR

3,100,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(installation and management of submarine cable systems)

(ITALY)

TI SPARKLE NORTH AMERICA. INC.

NEW YORK

USD

15,550,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications and promotional services)

(USA)

TI SPARKLE NETHERLANDS B.V.

AMSTERDAM

EUR

18,200

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(NETHERLANDS)

TI SPARKLE PANAMA S.A.

PANAMA

USD

10,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(managed bandwidth services)

TI SPARKLE PERU’ S.A.

LIMA

PEN

57,101,788

99.9999

TELECOM ITALIA SPARKLE S.p.A.

(managed bandwidth services)

(PERÙ)

0.0001

TI SPARKLE AMERICAS Inc.

TI SPARKLE PUERTO RICO LLC

SAN JUAN

USD

50,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(managed bandwidth services)

(PUERTO RICO)

TI SPARKLE ROMANIA S.R.L.

BUCHAREST

RON

3,021,560

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(ROMANIA)

TI SPARKLE RUSSIA LLC

MOSCOW

RUB

8,520,000

99.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(RUSSIA)

1.0000

TI SPARKLE UK Ltd

TI SPARKLE SINGAPORE PTE. Ltd

SINGAPORE

USD

5,121,120

99.9999

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

0.0001

TI SPARKLE NORTH AMERICA. INC.

TI SPARKLE SLOVAKIA S.R.O.

BRATISLAVA

EUR

300,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(SLOVAKIA)

TI SPARKLE SPAIN TELECOMMUNICATIONS SL

MADRID

EUR

1,687,124

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(SPAIN)

TI SPARKLE St. Croix LLC

VIRGIN ISLANDS

USD

1,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(managed bandwidth services)

(USA)

TI SPARKLE SWITZERLAND GmbH

ZURICH

CHF

2,000,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(SWITZERLAND)

TI SPARKLE TURKEY TELEKOMÜNIKASYON ANONIM SIRKETI

YENISBONA

TRY

40,600,000

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(telecommunications services)

(ISTANBUL- TURKEY)

TI SPARKLE UK Ltd

LONDON

EUR

3,983,254

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(value-added and networking services)

(UK)

TI SPARKLE VENEZUELA C.A.

CARACAS

VEF

981,457

100.0000

TELECOM ITALIA SPARKLE S.p.A.

(managed bandwidth service)

(VENEZUELA)

TIMB2 S.r.l.

ROME

EUR

10,000

99.0000

PERSIDERA S.p.A.

(management of television frequency user rights)

(ITALY)

1.0000

TIM S.p.A.

TIMVISION S.r.l.

ROME

EUR

50,000

100.0000

TIM S.p.A.

(production, co-production, conception and creation of programs, films and audiovisual content, including multimedia and interactive content)

(ITALY)

TN FIBER S.r.l.

TRENTO

EUR

55,918,000

100.0000

TIM S.p.A.

(design, construction, maintenance and supply of optical network access to users in the province of Trento)

(ITALY)

BRAZIL BUSINESS UNIT

TIM BRASIL SERVIÇOS E PARTICIPAÇÕES S.A.

RIO DE JANEIRO

BRL

7,169,029,859

99.9999

TELECOM ITALIA FINANCE S.A.

(investment holding company)

(BRAZIL)

0.0001

TIM S.p.A.

TIM CELULAR S.A.

SAO PAULO

BRL

9,434,215,720

100.0000

TIM PARTICIPAÇÕES S.A.

(telecommunications services)

(BRAZIL)

TIM PARTICIPAÇÕES S.A.

RIO DE JANEIRO

BRL

9,913,414,422

66.5819

TIM BRASIL SERVIÇOS E PARTICIPAÇÕES S.A.

(investment holding company)

(BRAZIL)

0.0662

TIM PARTICIPAÇÕES S.A.

TIM S.A. (formerly INTELIG TELECOMUNICAÇÕES Ltda)

RIO DE JANEIRO

BRL

4,041,956,045

99.9999

TIM PARTICIPAÇÕES S.A.

(telecommunications services)

(BRAZIL)

0.0001

TIM CELULAR S.A.

OTHER OPERATIONS

OLIVETTI DEUTSCHLAND GmbH

NURNBERG

EUR

25,600,000

100.0000

OLIVETTI S.p.A.

(sale of office equipment and supplies)

(GERMANY)

OLIVETTI ESPANA S.A. (IN LIQUIDATION)

BARCELONA

EUR

1,229,309

100.0000

OLIVETTI S.p.A.

(sale and maintenance of office supplies, consultancy and network management)

(SPAIN)

OLIVETTI UK Ltd

NORTHAMPTON

GBP

6,295,712

100.0000

OLIVETTI S.p.A.

(sale of office equipment and supplies)

(UK)

TELECOM ITALIA CAPITAL S.A.

LUXEMBOURG

EUR

2,336,000

100.0000

TIM S.p.A.

(financial company)

(LUXEMBOURG)

TELECOM ITALIA FINANCE S.A.

LUXEMBOURG

EUR

1,818,691,979

100.0000

TIM S.p.A.

(financial company)

(LUXEMBOURG)

TELECOM ITALIA LATAM PARTICIPACOES E GESTAO ADMINISTRATIVA Ltda

SAO PAULO

BRL

118,925,803

100.0000

TIM S.p.A.

(provision of telecommunications and representation services)

(BRAZIL)

TIAUDIT COMPLIANCE LATAM S.A. (IN LIQUIDATION)

RIO DE JANEIRO

BRL

1,500,000

69.9996

TIM S.p.A.

(internal auditing services)

(BRAZIL)

30.0004

TIM BRASIL SERVICOS E PARTICIPACOES S.A.

TIESSE S.c.p.A.

IVREA

EUR

103,292

61.0000

OLIVETTI S.p.A.

(installation and assistance for electronic, IT, telematics and telecommunications equipment)

(TURIN-ITALY)

TIM TANK S.r.l.

MILAN

EUR

18,100,000

100.0000

TIM S.p.A.

(fund and securities investments)

(ITALY)

Associates and joint ventures accounted for using the equity method

ALFIERE S.p.A. (*)

ROME

EUR

9,250,000

50.0000

TIM S.p.A.

(real estate management)

(ITALY)

AREE URBANE S.r.l. (IN LIQUIDATION)

MILAN

EUR

100,000

32.6200

TIM S.p.A.

(real estate management)

(ITALY)

ASSCOM INSURANCE BROKERS S.r.l.

MILAN

EUR

100,000

20.0000

TIM S.p.A.

(insurance brokerage)

(ITALY)

BALTEA S.r.l. (IN BANKRUPTCY)

IVREA

EUR

100,000

49.0000

OLIVETTI S.p.A.

(production and sale of office products and telecommunications IT services)

(TURIN— ITALY)

CLOUDESIRE.COM S.r.l.

PISA

EUR

11,671

(

**)

TELECOM ITALIA VENTURES S.r.l.

(design, implementation and marketing of a marketplace platform for the sale of a software as-a-service applications)

(ITALY)

CONSORZIO ANTENNA COLBUCCARO

ASCOLI PICENO

EUR

121,000

20.0000

PERSIDERA S.p.A.

(installation, management and maintenance ofmetal pylons complete with workstations for device recovery)

(ITALY)

CONSORZIO ANTENNA MONTECONERO

SIROLO

EUR

51,100

22.2211

PERSIDERA S.p.A.

(multimedia services)

(ANCONA-ITALY)

CONSORZIO E O (IN LIQUIDATION)

ROME

EUR

30,987

50.0000

TIM S.p.A.

(training services)

(ITALY)

DONO PER S.C.A.R.L. (IN LIQUIDATION)

ROME

EUR

30,000

33.3333

TIM S.p.A.

(collection and distribution of funds for charitable purposes or for financing of political parties or political and social movements)

(ITALY)

ECO4CLOUD S.r.l.

RENDE

EUR

19,532

(

**)

TELECOM ITALIA VENTURES S.r.l.

(development, production and sale of innovative products or services with high technological value

(COSENZA-ITALY)

ITALTEL GROUP S.p.A.

SETTIMO MILANESE (MILAN—

EUR

825,695

34.6845

19.3733

TELECOM ITALIA FINANCE S.A.

(investment holding company)

(ITALY)

KOPJRA S.r.l.

SCHIO

EUR

16,207

22.8491

TELECOM ITALIA VENTURES S.r.l.

(development , production and sale of innovative products or services with high-tech value)

(VICENZA-ITALY)

MOVENDA S.p.A.

ROME

EUR

133,333

24.9998

TELECOM ITALIA FINANCE SA

(design, construction and diffusion of internet sites, products and computer media)

(ITALY)

NORDCOM S.p.A.

MILAN

EUR

5,000,000

42.0000

TIM S.p.A.

(application service provider)

(ITALY)

OILPROJECT S.r.l.

MILAN

EUR

13,556

(

**)

TELECOM ITALIA VENTURES S.r.l.

(research, development, marketing and patenting of all intellectual property related to technology, information technology and TLC)

(ITALY)

PEDIUS S.r.l.

ROME

EUR

159

(

**)

TELECOM ITALIA VENTURES S.r.l.

(implementation of specialized telecommunications applications, telecommunications services over telephone connections, VoIP services)

(ITALY)

TIGLIO I S.r.l.

MILAN

EUR

5,255,704

47.8019

TIM S.p.A.

(real estate management)

(ITALY)

TIGLIO II S.r.l. (IN LIQUIDATION)

MILAN

EUR

10,000

49.4700

TIM S.p.A.

(real estate management)

(ITALY)

W.A.Y. S.r.l.

TURIN

EUR

136,383

39.9999

OLIVETTI S.p.A.

(development and sale of geolocation products and systems for security and logistics)

(ITALY)

WIMAN S.r.l.

MATTINATA

EUR

21,568

(

**)

TELECOM ITALIA VENTURES S.r.l.

(development, management and implementation of platforms for social-based Wi-Fiauthentications)

(FOGGIA-ITALY)

Other significant investments

CONSORZIO ANTENNA TOLENTINO

RECANATI

EUR

86,000

16.6666

PERSIDERA S.p.A.

(installation, management and maintenance of pylons complete with workstation for device recovery)

(MACERATA-ITALY)

CONSORZIO EMITTENTI RADIOTELEVISIVE

BOLOGNA

EUR

119,309

18.6600

PERSIDERA S.p.A.

(broadcasting activities)

(ITALY)

CONSORZIO HEALTH INNOVATION HUB (IN LIQUIDATION)

TRENTO

EUR

48,000

12.5000

TIM S.p.A.

(development of the market for systems and services for the sector social and health)

(ITALY)

DAHLIA TV S.p.A. (IN LIQUIDATION)

ROME

EUR

11,318,833

10.0800

TIM S.p.A.

(pay-per-view services)

(ITALY)

FIN.PRIV. S.r.l.

MILAN

EUR

20,000

14.2900

TIM S.p.A.

(financial company)

(ITALY)

IGOON. S.r.l.

NAPLES

EUR

16,498

14.2805

TELECOM ITALIA VENTURES S.r.l

(development of mobile platforms and applications able to provide user with innovative solutions for organizing and sharing all their digital content)

(ITALY)

INNAAS S.r.l.

ROME

EUR

108,700

13.0046

TELECOM ITALIA VENTURES S.r.l.

(design, development and sale of high-tech software and hardware)

(ITALY)

ITALBIZ.COM Inc.

DELAWARE

USD

4,721

19.5000

TIM S.p.A.

(internet services)

(USA)

MIX S.r.l.

MILAN

EUR

99,000

10.8500

TIM S.p.A.

(internet service provider)

(ITALY)

TXN Società a Responsabilità Limitata Semplificata

ARIANO IRPINO

EUR

333

14.4991

TELECOM ITALIA VENTURES S.r.l.

(software development)

(AVELLINO-ITALY)

(*) Joint Venture.

(**) Associates over which TIM S.p.A., directly and indirectly, exercise significant influence pursuant to IAS 28 (Investments in Associates and Joint Ventures).

XML

Form, Content and Other General Information - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017
Disclosure of Information about Consolidated Structured Entities [Line Items]
Name of reporting entity	Telecom Italia S.p.A. (the "Parent"), also "TIM S.p.A.", and its subsidiaries form the "TIM Group" or the "Group".
Description of business	The Group is engaged principally in the communications sector and, particularly, the fixed and mobile national and international telecommunications sector.
Date of end of reporting period	Dec. 31, 2017
Description of financial statement preceding period	In accordance with IAS 1 (Presentation of Financial Statements) comparative information included in the consolidated financial statements is, unless otherwise indicated, that of the preceding two years.
Preceding period of consolidated financial statement	2 years
Description of functional currency	The TIM Group consolidated financial statements at December 31, 2017 are expressed in euro.
Level of rounding used in financial statement	Rounded to the nearest million, unless otherwise indicated.
Sofora-Telecom Argentina [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Description of disposal of business has been recognized under discontinued operations	The Sofora-Telecom Argentina group, which was sold on March 8, 2016, has been recognized under Discontinued operations.

XML

Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017
Bottom of range [member]
Disclosure of significant accounting policies [line items]
Voting rights hold in associates	20.00%
Future cash flow explicit time horizon	3 years
Bottom of range [member] | Capitalized subscription acquisition costs [member]
Disclosure of significant accounting policies [line items]
Amortization period of intangible asset	12 months
Top of range [member]
Disclosure of significant accounting policies [line items]
Future cash flow explicit time horizon	5 years
Top of range [member] | Capitalized subscription acquisition costs [member]
Disclosure of significant accounting policies [line items]
Amortization period of intangible asset	36 months

XML

Scope of Consolidation - Summary of Subsidiaries Entering/ Exiting/ Merged in to the Scope of Consolidation (Detail)	12 Months Ended
	Dec. 31, 2017
TIERRA ARGENTEA S.A. [member]
Disclosure Of Investments In Consolidated Subsidiaries [Line Items]
Company	TIERRA ARGENTEA S.A.
Subsidiaries continuing operations	Liquidated
Business Unit	Other Operations
Exit Month	2017-05
TELECOM ITALIA FINANCE IRELAND Ltd [member]
Disclosure Of Investments In Consolidated Subsidiaries [Line Items]
Company	TELECOM ITALIA FINANCE IRELAND Limited
Subsidiaries continuing operations	Liquidated
Business Unit	Other Operations
Exit Month	2017-10
BEIGUA S.r.l. [member]
Disclosure Of Investments In Consolidated Subsidiaries [Line Items]
Company	BEIGUA S.r.l.
Subsidiaries continuing operations	Merged into Persidera S.p.A.
Business Unit	Domestic
Merger Month	2017-07
TI SPARKLE IRELAND TELECOMMUNICATIONS Ltd [member]
Disclosure Of Investments In Consolidated Subsidiaries [Line Items]
Company	TI SPARKLE IRELAND TELECOMMUNICATIONS Limited
Subsidiaries continuing operations	Merged into Telecom Italia Sparkle S.p.A.
Business Unit	Domestic
Merger Month	2017-07
OLIVETTI MULTISERVICES S.p.A. [member]
Disclosure Of Investments In Consolidated Subsidiaries [Line Items]
Company	OLIVETTI MULTISERVICES S.p.A.
Subsidiaries continuing operations	Merged into TIM S.p.A.
Business Unit	Domestic
Merger Month	2017-10
TIM real estate S.r.l. [member]
Disclosure Of Investments In Consolidated Subsidiaries [Line Items]
Company	TIM REAL ESTATE S.r.l.
Subsidiaries continuing operations	Merged into TIM S.p.A.
Business Unit	Domestic
Merger Month	2017-10
TMI TELEMEDIA INTERNATIONAL DO BRASIL Ltda [member]
Disclosure Of Investments In Consolidated Subsidiaries [Line Items]
Company	TMI TELEMEDIA INTERNATIONAL DO BRASIL LTDA
Subsidiaries continuing operations	Merged into TI Sparkle Brasil Participações Ltda
Business Unit	Domestic
Merger Month	2017-10

XML

Scope of Consolidation - Summary of Breakdown by Number of Subsidiaries and Associates (Detail) - Companies	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Information about Consolidated Structured Entities [Line Items]
Companies	86	93
Associates accounted for using the equity method [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Companies	19	19
Joint ventures accounted for using the equity method [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Companies	1	1
Subsidiaries consolidated lne- by -line [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Companies	66	73
Italy [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Companies	42	45
Italy [member] | Associates accounted for using the equity method [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Companies	19	19
Italy [member] | Joint ventures accounted for using the equity method [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Companies	1	1
Italy [member] | Subsidiaries consolidated lne- by -line [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Companies	22	25
Outside Italy [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Companies	44	48
Outside Italy [member] | Subsidiaries consolidated lne- by -line [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Companies	44	48

XML

Scope of Consolidation - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of Information about Consolidated Structured Entities [Line Items]
Positive or negative exchange rate effect	€ (155)	€ 302	€ (458)
Cash flow without exchange rate effect	€ (551)	434	€ (1,236)
TIM Brasil group [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Proportion of ownership interests held by non-controlling interests	33.40%
Increase (decrease) in cash and cash equivalents	€ (744)	58
Positive or negative exchange rate effect	(146)	311
Cash flow without exchange rate effect	(598)	€ (253)
Payment to the clean-up consortium	€ 257
TIM Brasil group [member] | Tim Celular S.A. and Tim S.A. [member] | Business unit [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Proportion of share capital of operating companies	100.00%

XML

Scope of Consolidation - Summary of Statement of Financial Position Data (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure of Information about Consolidated Structured Entities [Line Items]
Non-current assets	€ 58,452	€ 58,784
Current assets	10,331	11,662
Total assets	68,783	70,446
Non-current liabilities	32,612	34,554
Current liabilities	12,388	12,339
Total liabilities	45,000	46,893
Equity	23,783	23,553	€ 21,249	€ 21,584
Non-controlling interests	2,226	2,346
TIM Brasil group [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Non-current assets	6,819	7,822
Current assets	1,929	2,956
Total assets	8,748	10,778
Non-current liabilities	1,703	2,726
Current liabilities	1,852	2,331
Total liabilities	3,555	5,057
Equity	5,193	5,721
Non-controlling interests	€ 1,556	€ 1,705

XML

Scope of Consolidation - Summary of Income Statement Data (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of Information about Consolidated Structured Entities [Line Items]
Revenues	€ 19,828	€ 19,025	€ 19,719
Profit (loss) for the year	1,287	1,919	50
of which Non-controllinginterests	166	158	731
TIM Brasil group [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Revenues	4,502	4,047	4,637
Profit (loss) for the year	340	194	324
of which Non-controllinginterests	€ 114	€ 65	€ 188

XML

Business Combinations - Additional information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of detailed information about business combination [abstract]
Business combination transactions during period	€ 0	€ 0	€ 0

XML

Goodwill - Summary of Breakdown and Changes in Goodwill (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Beginning balance	€ 29,612
Ending balance	29,462	€ 29,612
Operating segments [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Beginning balance	29,612	29,383
Increase		13
Decrease	0	0
Impairments	0	0
Exchange differences	(150)	216
Ending balance	29,462	29,612
Core domestic [member] | Operating segments [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Beginning balance	28,077	28,035
Reclassification		29
Increase		13
Decrease	0	0
Impairments	0	0
Ending balance	28,077	28,077
International wholesale [member] | Operating segments [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Beginning balance	412	412
Decrease	0	0
Impairments	0	0
Ending balance	412	412
Domestic [member] | Operating segments [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Beginning balance	28,489	28,447
Reclassification		29
Increase		13
Decrease	0	0
Impairments	0	0
Ending balance	28,489	28,489
Brazil [member] | Operating segments [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Beginning balance	1,123	907
Decrease	0	0
Impairments	0	0
Exchange differences	(150)	216
Ending balance	973	1,123
Media [member] | Operating segments [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Beginning balance		29
Reclassification		(29)
Decrease		0
Impairments		0
Other operations [member] | Operating segments [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Decrease	0	0
Impairments	€ 0	€ 0

XML

Goodwill - Additional Information (Detail) € in Millions, R$ in Millions	Oct. 31, 2016 EUR (€)	Dec. 31, 2017 EUR (€)	Dec. 31, 2017 BRL (R$)	Dec. 31, 2016 EUR (€)
Disclosure Of Goodwill [Line Items]
Carrying value of goodwill		€ 29,462		€ 29,612
CGU [member] | Gross carrying amount [member]
Disclosure Of Goodwill [Line Items]
Carrying value of goodwill | R$			R$ 3,854
NOVERCA S.r.l. [member]
Disclosure Of Goodwill [Line Items]
Recognition of goodwill	€ 5

XML

Goodwill - Summary of Gross Carrying Amounts, Accumulated Impairment Losses (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	€ 29,462	€ 29,612
Operating segments [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	29,462	29,612
Operating segments [member] | Core domestic [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	28,077	28,077
Operating segments [member] | International wholesale [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	412	412
Operating segments [member] | Gross carrying amount [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	43,661	43,846
Operating segments [member] | Gross carrying amount [member] | Core domestic [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	42,045	42,045
Operating segments [member] | Gross carrying amount [member] | International wholesale [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	412	412
Operating segments [member] | Accumulated impairment losses [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	(14,199)	(14,234)
Operating segments [member] | Accumulated impairment losses [member] | Core domestic [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	(13,968)	(13,968)
Operating segments [member] | Domestic [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	28,489	28,489
Operating segments [member] | Domestic [member] | Gross carrying amount [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	42,457	42,457
Operating segments [member] | Domestic [member] | Accumulated impairment losses [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	(13,968)	(13,968)
Operating segments [member] | Brazil [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	973	1,123
Operating segments [member] | Brazil [member] | Gross carrying amount [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	1,204	1,389
Operating segments [member] | Brazil [member] | Accumulated impairment losses [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	€ (231)	€ (266)

XML

Goodwill - Summary of Principal Parameters for Estimates of Value in Use (Detail)	Dec. 31, 2017
Core domestic [member]
Disclosure of Information for Cash-generating Units [Line Items]
WACC	6.39%
WACC before tax	8.52%
Growth rate beyond the explicit period (g)	0.50%
Capitalization rate (WACC -g )	8.02%
Capex/Revenues, % perpetual	19.26%
International wholesale [member]
Disclosure of Information for Cash-generating Units [Line Items]
WACC	6.39%
WACC before tax	8.31%
Growth rate beyond the explicit period (g)	0.50%
Capitalization rate (WACC -g )	7.81%
Capex/Revenues, % perpetual	5.86%

XML

Goodwill - Summary of Differences Between Values in Use and Carrying Amounts (Detail) € in Millions	Dec. 31, 2017 EUR (€)
Core domestic [member]
Disclosure of Information for Cash-generating Units [Line Items]
Difference between values in use and carrying amounts	€ 4,465
International wholesale [member]
Disclosure of Information for Cash-generating Units [Line Items]
Difference between values in use and carrying amounts	56
Brazil [member]
Disclosure of Information for Cash-generating Units [Line Items]
Difference between values in use and carrying amounts	€ 2,552

XML

Goodwill - Summary of Parameters that Make Value in Use Equal to Carrying Amount (Detail)	12 Months Ended
	Dec. 31, 2017
Core domestic [member]
Disclosure of Information for Cash-generating Units [Line Items]
WACC before tax	8.52%
Capitalization rate (WACC - g)	8.02%
Capex/Revenues, % on TV	19.26%
Core domestic [member] | Gross carrying amount [member]
Disclosure of Information for Cash-generating Units [Line Items]
WACC before tax	9.26%
Capitalization rate (WACC - g)	8.76%
Capex/Revenues, % on TV	23.08%
International wholesale [member]
Disclosure of Information for Cash-generating Units [Line Items]
WACC before tax	8.31%
Capitalization rate (WACC - g)	7.81%
Capex/Revenues, % on TV	5.86%
International wholesale [member] | Gross carrying amount [member]
Disclosure of Information for Cash-generating Units [Line Items]
WACC before tax	8.70%
Capitalization rate (WACC - g)	8.20%
Capex/Revenues, % on TV	6.34%
Brazil [member]
Disclosure of Information for Cash-generating Units [Line Items]
Percentage change in the stock market price	(32.00%)

XML

Intangible Assets with a Finite Useful Life - Additional Information (Detail) € in Millions, R$ in Billions	12 Months Ended
	Dec. 31, 2017 EUR (€)	Dec. 31, 2017 BRL (R$)	Dec. 31, 2016 EUR (€)	Dec. 31, 2015 EUR (€)
Disclosure of Detailed Information about Intangible Assets [Line Items]
Increase (decrease) through transfers and other changes, intangible assets other than goodwill	€ 241
Additions to intangible assets	2,292		€ 1,641
Amount of intangible assets	7,192		6,951	€ 6,480
Capitalized finance expense	73		73
Internally generated [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Additions to intangible assets	272		289
Tim Brasil group: [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
User rights acquisition amount	1,000	R$ 2.9
Capitalized finance expense	€ 73
Capitalized finance expense percentage	9.48%	9.48%
User rights reclassified under concessions, licenses, trademarks and similar rights	€ 251
Concessions, licenses, trademarks and similar rights [member] | Core domestic [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Cost of TV frequencies licenses	€ 111
Licenses for the frequencies used for digital terrestrial transmission expiry year	2032	2032
Concessions, licenses, trademarks and similar rights [member] | Brazil business unit [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Cost of telephone licenses and similar rights	€ 464
Concessions, licenses, trademarks and similar rights [member] | TIM S.p.A [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Cost of telephone licenses and similar rights	1,689
Cost of indefeasible rights of use	103
Concessions, licenses, trademarks and similar rights [member] | Telecom Italia Sparkle Group [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Cost of indefeasible rights of use	393
Concessions, licenses, trademarks and similar rights [member] | International wholesale [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Cost of indefeasible rights of use	290
Telephone licenses and similar rights [member] | Net carrying amount [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Amount of intangible assets	2,153
Software development [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Write-downs of software development projects	30
Industrial patents and intellectual property rights [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Additions to intangible assets	771		990
Amount of intangible assets	2,193		2,458	2,070
Gross disposals, included in intangible assets with finite useful life	€ 519
Industrial patents and intellectual property rights [member] | Bottom of range [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Amortization period of intangible asset	2 years	2 years
Industrial patents and intellectual property rights [member] | Top of range [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Amortization period of intangible asset	5 years	5 years
Industrial patents and intellectual property rights [member] | Brazil business unit [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Amount of intangible assets	€ 944
Industrial patents and intellectual property rights [member] | TIM S.p.A [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Amount of intangible assets	1,223
Capitalized subscription acquisition costs [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Subscriber acquisition costs	€ 110
Capitalized subscription acquisition costs [member] | Bottom of range [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Amortization period of intangible asset	12 months	12 months
Capitalized subscription acquisition costs [member] | Top of range [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Amortization period of intangible asset	36 months	36 months
Capitalized subscription acquisition costs [member] | Brazil business unit [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Subscriber acquisition costs	€ 32
Capitalized subscription acquisition costs [member] | TIM S.p.A [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Subscriber acquisition costs	78
Other intangible assets [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Additions to intangible assets	157		128
Amount of intangible assets	134		109	83
Gross disposals, included in intangible assets with finite useful life	62
Work in progress and advance payments [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Additions to intangible assets	1,224		436
Amount of intangible assets	2,115		1,530	€ 1,498
Increase in work in progress and advance payments	585
Capitalized finance expense	73		€ 73
Work in progress and advance payments [member] | TIM S.p.A [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Advance payments	€ 630

XML

Intangible Assets with a Finite Useful Life - Summary of Breakdown and Movements in Intangible Assets (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of Detailed Information about Intangible Assets [Line Items]
Beginning balance	€ 6,951	€ 6,480
Addition	2,292	1,641
Amortization	(1,793)	(1,743)
Impairment losses / Reversals (mill	(30)		€ (240)
Disposals		(2)
Exchange Differences	(391)	498
Capitalized borrowing costs	73	73
Other changes	90	4
Ending balance	7,192	6,951	6,480
Industrial patents and intellectual property rights [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Beginning balance	2,458	2,070
Addition	771	990
Amortization	(1,263)	(1,243)
Exchange Differences	(147)	206
Other changes	374	435
Ending balance	2,193	2,458	2,070
Concessions, licenses, trademarks and similar rights [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Beginning balance	2,854	2,829
Addition	140	87
Amortization	(396)	(393)
Exchange Differences	(96)	89
Other changes	248	242
Ending balance	2,750	2,854	2,829
Other intangible assets [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Beginning balance	109	83
Addition	157	128
Amortization	(134)	(107)
Exchange Differences	(5)	5
Other changes	7
Ending balance	134	109	83
Work in progress and advance payments [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Beginning balance	1,530	1,498
Addition	1,224	436
Impairment losses / Reversals (mill	(30)
Disposals		(2)
Exchange Differences	(143)	198
Capitalized borrowing costs	73	73
Other changes	(539)	(673)
Ending balance	€ 2,115	€ 1,530	€ 1,498

XML

Intangible Assets with a Finite Useful Life - Summary of Net Carrying Amount of Telephone Licenses and Similar Rights and their Useful Lives (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of Reconciliation of Changes in Intangible Assets and Goodwill [Line Items]
Net carrying amount	€ 7,192	€ 6,951	€ 6,480
Amortization charge for 2016	(1,793)	€ (1,743)
TIM S.p.A [member] | UMTS [member]
Disclosure of Reconciliation of Changes in Intangible Assets and Goodwill [Line Items]
Net carrying amount	€ 537
Amortization period (years)	18
Amortization charge for 2016	€ 134
TIM S.p.A [member] | UMTS 2100 MHz [member]
Disclosure of Reconciliation of Changes in Intangible Assets and Goodwill [Line Items]
Net carrying amount	€ 30
Amortization period (years)	12
Amortization charge for 2016	€ 7
TIM S.p.A [member] | WiMax [member]
Disclosure of Reconciliation of Changes in Intangible Assets and Goodwill [Line Items]
Net carrying amount	€ 5
Amortization period (years)	15
Amortization charge for 2016	€ 1
TIM S.p.A [member] | LTE 1800 MHz [member]
Disclosure of Reconciliation of Changes in Intangible Assets and Goodwill [Line Items]
Net carrying amount	€ 103
Amortization period (years)	18
Amortization charge for 2016	€ 9
TIM S.p.A [member] | LTE 800 MHz [member]
Disclosure of Reconciliation of Changes in Intangible Assets and Goodwill [Line Items]
Net carrying amount	€ 720
Amortization period (years)	17
Amortization charge for 2016	€ 60
TIM S.p.A [member] | LTE 2600 MHz [member]
Disclosure of Reconciliation of Changes in Intangible Assets and Goodwill [Line Items]
Net carrying amount	€ 79
Amortization period (years)	17
Amortization charge for 2016	€ 7
TIM S.p.A [member] | GSM (extension) [member]
Disclosure of Reconciliation of Changes in Intangible Assets and Goodwill [Line Items]
Net carrying amount	€ 17
Amortization period (years)	3
Amortization charge for 2016	€ 34
TIM S.p.A [member] | Band 1452-1492 MHz [member]
Disclosure of Reconciliation of Changes in Intangible Assets and Goodwill [Line Items]
Net carrying amount	€ 198
Amortization period (years)	14
Amortization charge for 2016	€ 16
Tim Brasil group: [member] | GSM and 3G (UMTS) [member]
Disclosure of Reconciliation of Changes in Intangible Assets and Goodwill [Line Items]
Net carrying amount	€ 165
Amortization period (years)	15
Amortization charge for 2016	€ 53
Tim Brasil group: [member] | 4G (LTE - 700MHz) [member]
Disclosure of Reconciliation of Changes in Intangible Assets and Goodwill [Line Items]
Net carrying amount	€ 299
Amortization period (years)	15
Amortization charge for 2016	€ 15

XML

Intangible Assets with a Finite Useful Life - Summary of Gross Carrying Amount, Accumulated Impairment Losses and Accumulated Amortization (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	€ 7,192	€ 6,951	€ 6,480
Industrial patents and intellectual property rights [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	2,193	2,458	2,070
Concessions, licenses, trademarks and similar rights [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	2,750	2,854	2,829
Other intangible assets [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	134	109	83
Work in progress and advance payments [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	2,115	1,530	€ 1,498
Gross carrying amount [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	21,977	21,237
Gross carrying amount [member] | Industrial patents and intellectual property rights [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	12,266	12,241
Gross carrying amount [member] | Concessions, licenses, trademarks and similar rights [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	7,044	7,017
Gross carrying amount [member] | Other intangible assets [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	522	447
Gross carrying amount [member] | Work in progress and advance payments [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	2,145	1,532
Accumulated impairment losses [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	(310)	(315)
Accumulated impairment losses [member] | Industrial patents and intellectual property rights [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	(7)	(7)
Accumulated impairment losses [member] | Concessions, licenses, trademarks and similar rights [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	(273)	(306)
Accumulated impairment losses [member] | Work in progress and advance payments [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	(30)	(2)
Accumulated amortization [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	(14,475)	(13,971)
Accumulated amortization [member] | Industrial patents and intellectual property rights [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	(10,066)	(9,776)
Accumulated amortization [member] | Concessions, licenses, trademarks and similar rights [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	(4,021)	(3,857)
Accumulated amortization [member] | Other intangible assets [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	€ (388)	€ (338)

XML

Tangible Assets (Owned and Under Finance Leases) - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of detailed information about property, plant and equipment [line items]
Increase in assets held under finance lease		€ 269
Plant and equipment	€ 14,216	13,947	€ 12,659
Addition of property plant and equipment	3,258	3,149
Change in addition of property plant and equipment	109
Tangible asset, disposals	11	24
Gross carrying amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Plant and equipment	76,251	76,696
Tangible asset, disposals	2,223
Internally generated [member]
Disclosure of detailed information about property, plant and equipment [line items]
Addition of property plant and equipment	354	350
Business unit [member]
Disclosure of detailed information about property, plant and equipment [line items]
Plant and equipment	2,059
TIM S.p.A [member]
Disclosure of detailed information about property, plant and equipment [line items]
Land	178
Buildings	450
Plant and equipment	9,183
Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Increase in assets held under finance lease	82
Plant and equipment	2,331	2,413
Changes in financial leasing contracts	68	232	€ 1,523
Inflation adjustment to finance lease payment	13	16
Assets held under finance lease [member] | TIM S.p.A. [member]
Disclosure of detailed information about property, plant and equipment [line items]
Changes in financial leasing contracts	54
Assets held under finance lease [member] | Gross carrying amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Plant and equipment	4,060	€ 3,976
Plant and equipments [member] | Gross carrying amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Tangible asset, disposals	2,188
Motor vehicles [member]
Disclosure of detailed information about property, plant and equipment [line items]
Higher tangible assets and related payables for financial leases	€ 52
Finance leases on vehicles description	In 2017, 3,583 new leases on industrial vehicles were negotiated by the Parent

XML

Tangible Assets (Owned and Under Finance Leases) - Summary of Changes in Property, Plant and Equipment and Assets (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Beginning balance	€ 13,947	€ 12,659
Addition	3,258	3,149
Depreciation	(2,500)	(2,390)
Impairment losses / Reversals	(7)	(3)
Disposals	(11)	(24)
Exchange Differences	(396)	545
Other changes	(75)	11
Ending balance	14,216	13,947	€ 12,659
Land [member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Beginning balance	203	171
Addition	6	21
Impairment losses / Reversals		(2)
Exchange Differences	(2)	2
Other changes	6	11
Ending balance	213	203	171
Buildings (civil and industrial) [member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Beginning balance	509	444
Addition	10	87
Depreciation	(39)	(48)
Disposals		(1)
Exchange Differences	(3)	4
Other changes	11	23
Ending balance	488	509	444
Other [member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Beginning balance	391	378
Addition	88	93
Depreciation	(159)	(157)
Disposals	(2)	(5)
Exchange Differences	(18)	28
Other changes	76	54
Ending balance	376	391	378
Construction in progress and advance payments [member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Beginning balance	1,097	716
Addition	541	824
Impairment losses / Reversals	1	(1)
Disposals	(1)	(1)
Exchange Differences	(41)	54
Other changes	(543)	(495)
Ending balance	1,054	1,097	716
Plant and equipments [member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Beginning balance	11,709	10,909
Addition	2,601	2,113
Depreciation	(2,286)	(2,170)
Impairment losses / Reversals	(8)
Disposals	(8)	(17)
Exchange Differences	(332)	457
Other changes	373	417
Ending balance	12,049	11,709	10,909
Manufacturing and distribution equipment [member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Beginning balance	38	41
Addition	12	11
Depreciation	(16)	(15)
Other changes	2	1
Ending balance	36	38	41
Assets held under finance lease [member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Beginning balance	2,413
Change in finance lease contracts	68	232	1,523
Ending balance	2,331	2,413
Assets held under finance lease [member] | Land [member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Beginning balance	16
Ending balance	16	16
Assets held under finance lease [member] | Buildings (civil and industrial) [member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Beginning balance	1,835
Ending balance	1,768	1,835
Assets held under finance lease [member] | Other [member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Beginning balance	125
Ending balance	138	125
Assets held under finance lease [member] | Construction in progress and advance payments [member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Beginning balance	72
Ending balance	56	72
Assets held under finance lease [member] | Plant and equipments [member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Beginning balance	365
Ending balance	353	365
Assets held under finance lease [member] | Depreciation [Member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Beginning balance	2,413	2,208
Addition	151	86
Change in finance lease contracts	68	232
Depreciation	(180)	(158)
Exchange Differences	(44)	69
Other changes	(77)	(24)
Ending balance	2,331	2,413	2,208
Assets held under finance lease [member] | Depreciation [Member] | Land [member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Beginning balance	16	16
Ending balance	16	16	16
Assets held under finance lease [member] | Depreciation [Member] | Buildings (civil and industrial) [member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Beginning balance	1,835	1,880
Addition	47	23
Change in finance lease contracts	2	70
Depreciation	(130)	(125)
Other changes	14	(13)
Ending balance	1,768	1,835	1,880
Assets held under finance lease [member] | Depreciation [Member] | Plant and Equipment [member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Beginning balance	365	284
Addition	72
Change in finance lease contracts	14	28
Depreciation	(21)	(17)
Exchange Differences	(43)	69
Other changes	(34)	1
Ending balance	353	365	284
Assets held under finance lease [member] | Depreciation [Member] | Other [member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Beginning balance	125	7
Change in finance lease contracts	52	134
Depreciation	(29)	(16)
Exchange Differences	(1)
Other changes	(9)
Ending balance	138	125	7
Assets held under finance lease [member] | Depreciation [Member] | Construction in progress and advance payments [member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Beginning balance	72	21
Addition	32	63
Other changes	(48)	(12)
Ending balance	€ 56	€ 72	€ 21

XML

Tangible Assets (Owned and Under Finance Leases) - Summary of Depreciation on Straight-line Basis Over the Estimated Useful life of Assets (Detail)	12 Months Ended
	Dec. 31, 2017
Manufacturing and distribution equipment [member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Percentage of depreciation	20.00%
Bottom of range [member] | Buildings (civil and industrial) [member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Percentage of depreciation	2.00%
Bottom of range [member] | Plant and equipments [member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Percentage of depreciation	3.00%
Bottom of range [member] | Other [member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Percentage of depreciation	10.00%
Top of range [member] | Buildings (civil and industrial) [member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Percentage of depreciation	5.55%
Top of range [member] | Plant and equipments [member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Percentage of depreciation	50.00%
Top of range [member] | Other [member]
Reconciliation Of Changes In Property Plant And Equipment [Line Items]
Percentage of depreciation	50.00%

XML

Tangible Assets (Owned and under Finance Leases) - Summary of Gross Carrying Amount, Accumulated Impairment Losses and Accumulated Depreciation (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	€ 14,216	€ 13,947	€ 12,659
Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	2,331	2,413
Land [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	213	203	171
Land [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	16	16
Buildings (civil and industrial) [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	488	509	444
Buildings (civil and industrial) [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	1,768	1,835
Plant and equipments [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	12,049	11,709	10,909
Plant and equipments [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	353	365
Manufacturing and distribution equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	36	38	41
Other [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	376	391	378
Other [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	138	125
Construction in progress and advance payments [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	1,054	1,097	€ 716
Construction in progress and advance payments [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	56	72
Gross carrying amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	76,251	76,696
Gross carrying amount [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	4,060	3,976
Gross carrying amount [member] | Land [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	218	207
Gross carrying amount [member] | Land [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	16	16
Gross carrying amount [member] | Buildings (civil and industrial) [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	1,717	1,705
Gross carrying amount [member] | Buildings (civil and industrial) [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	3,391	3,330
Gross carrying amount [member] | Plant and equipments [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	68,964	69,372
Gross carrying amount [member] | Plant and equipments [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	397	394
Gross carrying amount [member] | Manufacturing and distribution equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	310	304
Gross carrying amount [member] | Other [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	3,988	4,010
Gross carrying amount [member] | Other [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	200	164
Gross carrying amount [member] | Construction in progress and advance payments [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	1,054	1,098
Gross carrying amount [member] | Construction in progress and advance payments [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	56	72
Accumulated impairment losses [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(70)	(76)
Accumulated impairment losses [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(27)	(27)
Accumulated impairment losses [member] | Land [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(5)	(4)
Accumulated impairment losses [member] | Buildings (civil and industrial) [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment		(1)
Accumulated impairment losses [member] | Buildings (civil and industrial) [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(27)	(27)
Accumulated impairment losses [member] | Plant and equipments [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(62)	(67)
Accumulated impairment losses [member] | Manufacturing and distribution equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(1)	(1)
Accumulated impairment losses [member] | Other [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(2)	(2)
Accumulated impairment losses [member] | Construction in progress and advance payments [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment		(1)
Accumulated amortization [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(61,965)	(62,673)
Accumulated amortization [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(1,702)	(1,536)
Accumulated amortization [member] | Buildings (civil and industrial) [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(1,229)	(1,195)
Accumulated amortization [member] | Buildings (civil and industrial) [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(1,596)	(1,468)
Accumulated amortization [member] | Plant and equipments [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(56,853)	(57,596)
Accumulated amortization [member] | Plant and equipments [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(44)	(29)
Accumulated amortization [member] | Manufacturing and distribution equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(273)	(265)
Accumulated amortization [member] | Other [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(3,610)	(3,617)
Accumulated amortization [member] | Other [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	€ (62)	€ (39)

XML

Tangible Assets (Owned and under Finance Leases) - Finance Lease Payments due in Future Years and Present Value (Detail) - Assets held under finance lease [member] - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure of finance lease by lessee [Line Items]
Future net minimum lease payments	€ 4,180	€ 4,509
Interest portion	(1,864)	(2,033)
Present value of lease payments	2,316	2,476
Financial lease liabilities	2,430	2,636
Financial receivables for lease contracts	(114)	(160)
Total net finance lease liabilities	2,316	2,476
Within 1 year [member]
Disclosure of finance lease by lessee [Line Items]
Future net minimum lease payments	271	298
Present value of lease payments	234	230
Later than one year and not later than five years [member]
Disclosure of finance lease by lessee [Line Items]
Future net minimum lease payments	1,031	1,088
Present value of lease payments	691	707
Beyond 5 years [member]
Disclosure of finance lease by lessee [Line Items]
Future net minimum lease payments	2,878	3,123
Present value of lease payments	€ 1,391	€ 1,539

XML

Investments - Summary of Investments in Associates and Joint Ventures Accounted for Using Equity method (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure Of Investments In Associates And Joint Ventures Accounted For Using Equity Method [Line Items]
NordCom	€ 17	€ 18	€ 18
Alfiere	0	0	23
Total Investments accounted for using the equity method	17	18	41
Tiglio I S. r. l [member]
Disclosure Of Investments In Associates And Joint Ventures Accounted For Using Equity Method [Line Items]
NordCom	7	8	8
NordCom S.p.A. [member]
Disclosure Of Investments In Associates And Joint Ventures Accounted For Using Equity Method [Line Items]
NordCom	5	5	4
W.A.Y. S.r.l. [member]
Disclosure Of Investments In Associates And Joint Ventures Accounted For Using Equity Method [Line Items]
NordCom	3	3	3
Other minor companies [member]
Disclosure Of Investments In Associates And Joint Ventures Accounted For Using Equity Method [Line Items]
NordCom	2	2	3
Alfiere SPA [member]
Disclosure Of Investments In Associates And Joint Ventures Accounted For Using Equity Method [Line Items]
Alfiere	€ 0	€ 0	€ 23

XML

Investments - Summary of Changes in Investments in Associates and Joint Ventures (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Investments In Associates And Joint Ventures Accounted For Using Equity Method [Line Items]
Investments in Associates, Beginning Balance	€ 18	€ 18
Investments	0	0
Disposals and reimbursements of capital	0	0
Valuation using equity method	(1)
Other changes	0	0
Investments in Associates, Ending Balance	17	18
Investments in Joint Ventures, Beginning Balance	0	23
Joint Ventures, Investments		0
Joint Ventures, Disposals and reimbursements of capital		(23)
Joint Ventures, Valuation using equity method		0
Joint Ventures, Other changes		0
Investments in Joint Ventures, Ending Balance	0	0
Investments in Associates and Joint Ventures, Beginning Balance	18	41
Associates and Joint Ventures,Investments	0	0
Associates and Joint Ventures,Disposals and reimbursements of capital	0	0
Associates and Joint Ventures,Valuation using equity method	(1)	(23)
Associates and Joint Ventures,	0	0
Investments in Associates and Joint Ventures,, Ending Balance	17	18
Alfiere SPA [member]
Disclosure Of Investments In Associates And Joint Ventures Accounted For Using Equity Method [Line Items]
Investments in Joint Ventures, Beginning Balance	0	23
Joint Ventures, Investments	0	0
Joint Ventures, Disposals and reimbursements of capital		(23)
Joint Ventures, Valuation using equity method	0	0
Joint Ventures, Other changes	0	0
Investments in Joint Ventures, Ending Balance	0	0
Tiglio I S. r. l [member]
Disclosure Of Investments In Associates And Joint Ventures Accounted For Using Equity Method [Line Items]
Investments in Associates, Beginning Balance	8	8
Investments	0	0
Disposals and reimbursements of capital	0	0
Valuation using equity method	(1)
Other changes	0	0
Investments in Associates, Ending Balance	7	8
NordCom S.p.A. [member]
Disclosure Of Investments In Associates And Joint Ventures Accounted For Using Equity Method [Line Items]
Investments in Associates, Beginning Balance	5	4
Investments	0	0
Disposals and reimbursements of capital	0	0
Valuation using equity method		1
Other changes	0	0
Investments in Associates, Ending Balance	5	5
W.A.Y. S.r.l. [member]
Disclosure Of Investments In Associates And Joint Ventures Accounted For Using Equity Method [Line Items]
Investments in Associates, Beginning Balance	3	3
Investments	0	0
Disposals and reimbursements of capital	0	0
Other changes	0	0
Investments in Associates, Ending Balance	3	3
Other minor companies [member]
Disclosure Of Investments In Associates And Joint Ventures Accounted For Using Equity Method [Line Items]
Investments in Associates, Beginning Balance	2	3
Investments	0	0
Disposals and reimbursements of capital	0	0
Valuation using equity method		(1)
Other changes	0	0
Investments in Associates, Ending Balance	€ 2	€ 2

XML

Investments - Additional Information (Detail)	Dec. 31, 2017 USD ($)
Alfiere SPA [member]
Disclosure of joint ventures [line items]
Write down of joint ventures related to investment	$ 0

XML

Investments - Summary of Financial Statement in Joint Venture (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure of joint ventures [line items]
Non-current assets	€ 58,452.0	€ 58,784.0
Current assets	10,331.0	11,662.0
Total assets	68,783.0	70,446.0
Non-current liabilities	32,612.0	34,554.0
Current liabilities	12,388.0	12,339.0
Total liabilities	45,000.0	46,893.0
Equity	23,783.0	23,553.0	€ 21,249.0	€ 21,584.0
Total Equity and liabilities	68,783.0	70,446.0
Profit (loss) for the year	€ 1,287.0	1,966.0	€ 661.0
Alfiere SPA [member]
Disclosure of joint ventures [line items]
Non-current assets		157.0
Current assets		3.0
Total assets		160.0
Non-current liabilities		149.0
Current liabilities		15.0
Total liabilities		164.0
Equity		(4.0)
Total Equity and liabilities		160.0
Profit (loss) for the year		(46.0)
TIM Group's share 50% [member]
Disclosure of joint ventures [line items]
Non-current assets		78.5
Current assets		1.5
Total assets		80.0
Non-current liabilities		74.5
Current liabilities		7.5
Total liabilities		82.0
Equity		(2.0)
Total Equity and liabilities		80.0
Profit (loss) for the year		€ (23.0)

XML

Investments - Summary of Other Investments (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Noncurrent Investments Other Than Investments Accounted For Using Equity Method [line items]
Beginning balance	€ 46	€ 45
Investments	3	5
Disposals and reimbursements of capital	0	(1)
Measurement at fair value	4	(3)
Other changes	(2)	0
Ending balance	51	46
Assicurazioni generali [member]
Disclosure of Noncurrent Investments Other Than Investments Accounted For Using Equity Method [line items]
Beginning balance	2	3
Investments	0	0
Disposals and reimbursements of capital	0	0
Measurement at fair value	1	(1)
Other changes	0	0
Ending balance	0	2
Fin.Priv. [member]
Disclosure of Noncurrent Investments Other Than Investments Accounted For Using Equity Method [line items]
Beginning balance	17	19
Investments	0	0
Disposals and reimbursements of capital	0	0
Measurement at fair value	3	(2)
Other changes	0	0
Ending balance	20	17
Northgate telecom innovations partners LP [member]
Disclosure of Noncurrent Investments Other Than Investments Accounted For Using Equity Method [line items]
Beginning balance	14	9
Investments	3	5
Disposals and reimbursements of capital	0	0
Measurement at fair value	0	0
Other changes	0	0
Ending balance	17	14
Others minor companies [member]
Disclosure of Noncurrent Investments Other Than Investments Accounted For Using Equity Method [line items]
Beginning balance	13	14
Investments	0	0
Disposals and reimbursements of capital	0	(1)
Measurement at fair value	0
Other changes	(2)	0
Ending balance	€ 11	€ 13

XML

Financial Assets (Non-Current and Current) - Financial Assets (Non-Current and Current) (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Securities, financial receivables and other non-current financial assets:
Securities other than investments		€ 1
Financial receivables for lease contracts	€ 69	101
Hedging derivatives relating to hedged items classified as non-currentassets/liabilities of a financial nature	1,495	2,497
Receivables from employees	47	48
Non-hedging derivatives	7	39
Other financial receivables	150	12
Total non-currentfinancial assets	1,768	2,698
Securities other than investments
Held for trading		140
Held to maturity	0	0
Available for sale	993	1,379
Securities other than investments	993	1,519
Financial receivables and other current financial assets:
Liquid assets with banks, financial institutions and post offices (with a maturity greater than 3 months)	100	100
Receivables from employees	16	15
Financial receivables for lease contracts	45	59
Hedging derivatives relating to hedged items classified as current assets/liabilities of a financial nature	260	185
Non-hedging derivatives	15	28
Other short-term financial receivables	1	2
Financial receivables and other current financial assets	437	389
Cash and cash equivalents	3,575	3,964	€ 3,559	€ 4,812
Current financial assets	5,005	5,872
Financial assets relating to Discontinued operations/Non-current assets held for sale	0	0
Total non-current and current financial assets	€ 6,773	€ 8,570

XML

Financial Assets (Non-current and Current) - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of financial assets [line items]
Other non-current financial receivables	€ 150	€ 12
Securities other than investments, classified as available-for-sale	800
Deposits with banks	50
Decrease in cash and cash equivalents from prior year	389
Securities other than investments (due within 3 months)	745	1,472
TIM S.p.A. [member]
Disclosure of financial assets [line items]
Securities other than investments, classified as available-for-sale	256
Deutsche Bank [member]
Disclosure of financial assets [line items]
Other non-current financial receivables	150
Italian Treasury Bonds [member]
Disclosure of financial assets [line items]
Securities other than investments, classified as available-for-sale	276
Italian Treasury Bonds Purchased by Telecom Italia Finance S.A. [member]
Disclosure of financial assets [line items]
Securities other than investments, classified as available-for-sale	20
Italian Treasury Bonds Purchased by Telecom Italia Finance S.A. with Different Maturities [member]
Disclosure of financial assets [line items]
Securities other than investments, classified as available-for-sale	524
Certificado de deposito bancario [member]
Disclosure of financial assets [line items]
Securities other than investments (due within 3 months)	€ 744	€ 1,471

XML

Financial Assets (Non-Current and Current) - Schedule of Decrease In Cash and Cash Equivalents (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure Of Cash And Cash Equivalents [Abstract]
Liquid assets with banks, financial institutions and post offices	€ 2,828	€ 2,491
Checks, cash and other receivables and deposits for cash flexibility	2	1
Securities other than investments (due within 3 months)	745	1,472
Total	€ 3,575	€ 3,964	€ 3,559	€ 4,812

XML

Miscellaneous Receivables and Other Non-current Assets - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure Miscellaneous Receivables And Other Non Current Assets [Line Items]
Change in miscellaneous receivables and other non-current assets	€ 200
Miscellaneous receivables and other non-current assets	2,422	€ 2,222
Income tax receivables	96	113
Miscellaneous receivables	704	763
Medium/long-term prepaid expenses	1,718	1,459
Tim Brasil group: [member]
Disclosure Miscellaneous Receivables And Other Non Current Assets [Line Items]
Miscellaneous receivables	651	696
Court deposits receivables	€ 349	€ 382

XML

Miscellaneous Receivables and Other Non-Current Assets - Schedule of Increase In Miscellaneous Receivables and Other Non-Current Assets (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure Miscellaneous Receivables And Other Non Current Assets [Line Items]
Miscellaneous receivables	€ 704	€ 763
Medium/long-term prepaid expenses	1,718	1,459
Total	2,422	2,222
FInancial instruments IAS 39 [member]
Disclosure Miscellaneous Receivables And Other Non Current Assets [Line Items]
Miscellaneous receivables	371	399
Total	€ 371	€ 399

XML

Income Taxes (Current and Deferred) - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure Of Income Taxes [Line Items]
Non-current and current income tax receivables	€ 173	€ 207
Non-current income tax receivables	96	113
Current income tax receivables	77	94
Net deferred tax liability assets	728	584
Net deferred tax assets	993	877
Net deferred tax liabilities	265	293
Unused tax loss carryforwards	2,306
Deferred tax assets have not been recognized	647	733
Tax loss carryforwards	2,215
Deferred tax liabilities have not been recognized	900
Income tax payables	157	703
Non-current portion of income tax payable	45	66
Current portion of income tax payable	112	637
Decrease Increase of income tax expenses	438
Income tax expenses	490	928	€ 723
Telecom Italia capital [member]
Disclosure Of Income Taxes [Line Items]
Net deferred tax liabilities	€ 174	208
Italy [member]
Disclosure Of Income Taxes [Line Items]
Applicable tax rate	24.00%
Business unit [member]
Disclosure Of Income Taxes [Line Items]
Current portion of income tax payable	€ 112
Business unit [member] | Brazil [member]
Disclosure Of Income Taxes [Line Items]
Current income tax receivables	69
Net deferred tax liabilities	25	32
Unused tax loss carryforwards	91	193
Non-current portion of income tax payable	45
Current portion of income tax payable	53
Business unit [member] | Italy [member]
Disclosure Of Income Taxes [Line Items]
Current income tax receivables	5
Net deferred tax assets	939	812
Net deferred tax liabilities	54	€ 38
Current portion of income tax payable	€ 58

XML

Income Taxes (Current and Deferred) - Schedule of Deferred Tax Assets and Deferred Tax Liabilities (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Major components of tax expense (income) [abstract]
Deferred tax assets	€ 993	€ 877
Deferred tax liabilities	(265)	(293)
Total	€ 728	€ 584

XML

Income Taxes (Current and Deferred) - Schedule of Deferred Tax Assets and Deferred Tax Liabilities Before Offsets by Legal Entity (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	€ 993	€ 877
Deferred tax liabilities	(265)	(293)
Net deferred tax liability assets	728	584
Deferred [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	1,429	1,294
Deferred tax liabilities	(701)	(710)
Net deferred tax liability assets	€ 728	€ 584

XML

Income Taxes (Current and Deferred) - Schedule of Temporary Differences in Deferred Tax Assets and Deferred Tax Liabilities (Detail) € in Millions	12 Months Ended
	Dec. 31, 2017 EUR (€)
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets, beginning balance	€ 877
Deferred tax liabilities, beginning balance	293
Total net deferred tax assets (liabilities), beginning balance	584
Deferred tax assets, Recognized in profit or loss	(150)
Deferred tax assets, Recognized in equity	18
Deferred tax assets, Change in scope of consolidation and other changes	12
Deferred tax assets, ending balance	993
Deferred tax liabilities, ending balance	265
Total net deferred tax assets (liabilities), ending balance	728
Deferred tax assets [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets, beginning balance	1,294
Deferred tax assets, Recognized in profit or loss	144
Deferred tax assets, Recognized in equity	3
Deferred tax assets, Change in scope of consolidation and other changes	(12)
Deferred tax assets, ending balance	1,429
Deferred tax assets [member] | Provision for bad debts [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets, beginning balance	154
Deferred tax assets, Recognized in profit or loss	(6)
Deferred tax assets, Change in scope of consolidation and other changes	(6)
Deferred tax assets, ending balance	142
Deferred tax assets [member] | Provisions [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets, beginning balance	274
Deferred tax assets, Recognized in profit or loss	187
Deferred tax assets, Change in scope of consolidation and other changes	(9)
Deferred tax assets, ending balance	452
Deferred tax assets [member] | Tax loss carryforwards [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets, beginning balance	72
Deferred tax assets, Recognized in profit or loss	(33)
Deferred tax assets, Change in scope of consolidation and other changes	(7)
Deferred tax assets, ending balance	32
Deferred tax assets [member] | Taxed depreciation and amortization [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets, beginning balance	101
Deferred tax assets, Recognized in profit or loss	5
Deferred tax assets, ending balance	106
Deferred tax assets [member] | Other deferred tax assets [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets, beginning balance	102
Deferred tax assets, Recognized in profit or loss	(2)
Deferred tax assets, Recognized in equity	(2)
Deferred tax assets, Change in scope of consolidation and other changes	10
Deferred tax assets, ending balance	108
Deferred tax assets [member] | Derivatives [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets, beginning balance	591
Deferred tax assets, Recognized in profit or loss	(7)
Deferred tax assets, Recognized in equity	5
Deferred tax assets, ending balance	589
Deferred tax liabilities [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities, beginning balance	(710)
Deferred tax assets, Recognized in profit or loss	6
Deferred tax assets, Recognized in equity	(21)
Deferred tax assets, Change in scope of consolidation and other changes	24
Deferred tax liabilities, ending balance	(701)
Deferred tax liabilities [member] | Business combinations-for step-up of net assets in excess of tax basis [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities, beginning balance	(142)
Deferred tax assets, Recognized in profit or loss	5
Deferred tax assets, Change in scope of consolidation and other changes	6
Deferred tax liabilities, ending balance	(131)
Deferred tax liabilities [member] | Deferred gains [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities, beginning balance	(4)
Deferred tax assets, Recognized in profit or loss	2
Deferred tax liabilities, ending balance	(2)
Deferred tax liabilities [member] | Accelerated depreciation [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities, beginning balance	(28)
Deferred tax assets, Recognized in profit or loss	13
Deferred tax assets, Change in scope of consolidation and other changes	1
Deferred tax liabilities, ending balance	(14)
Deferred tax liabilities [member] | Other deferred tax liabilities [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities, beginning balance	(125)
Deferred tax assets, Recognized in profit or loss	(22)
Deferred tax assets, Change in scope of consolidation and other changes	15
Deferred tax liabilities, ending balance	(132)
Deferred tax liabilities [member] | Derivatives [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities, beginning balance	(411)
Deferred tax assets, Recognized in profit or loss	8
Deferred tax assets, Recognized in equity	(21)
Deferred tax assets, Change in scope of consolidation and other changes	2
Deferred tax liabilities, ending balance	€ (422)

XML

Income Taxes (Current and Deferred) - Schedule of Expirations of Deferred Tax Assets and Deferred Tax Liabilities (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	€ 993	€ 877
Deferred tax liabilities	(265)	(293)
Total net deferred tax assets (liabilities)	728	584
Deferred [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	1,429	1,294
Deferred tax liabilities	(701)	(710)
Total net deferred tax assets (liabilities)	728	€ 584
Within 1 year [member] | Deferred [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	423
Deferred tax liabilities	(28)
Total net deferred tax assets (liabilities)	395
Beyond 1 year [member] | Deferred [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	1,006
Deferred tax liabilities	(673)
Total net deferred tax assets (liabilities)	€ 333

XML

Income Taxes (Current and Deferred) - Schedule of Unused Tax Loss Carryforwards (Detail) € in Millions	Dec. 31, 2017 EUR (€)
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Total unused tax loss carryforwards	€ 2,306
Within 1 year [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Total unused tax loss carryforwards	1
Beyond 5 years [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Total unused tax loss carryforwards	8
Without expiration [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Total unused tax loss carryforwards	€ 2,297

XML

Income Taxes (Current and Deferred) - Schedule of Income Tax Payables (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Income tax payables:
Non-current	€ 45	€ 66
Current	112	637
Total	€ 157	€ 703

XML

Income Taxes (Current and Deferred) - Schedule of Income Tax Expense (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Major components of tax expense (income) [abstract]
Current taxes for the year	€ 646	€ 900	€ 424
Net difference in prior years estimates	(6)	(54)	(6)
Total current taxes	640	846	418
Deferred taxes	(150)	34	(15)
Total effective income tax recognized in income statement from continuing operations	490	880	403
Total taxes on Discontinued operations/Non-current assets held for sale		48	320
Total effective income tax recognized in income statements	€ 490	€ 928	€ 723

XML

Income Taxes (Current and Deferred) - Schedule of Reconciliation Between the Theoretical Tax Expense (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure Of Reconciliation Of Effective Income Tax Expense [Line Items]
Profit (loss) before tax from continuing operations	€ 1,777	€ 2,799	€ 453
Theoretical income tax from continuing operations	426	770	125
Income tax effect on increases (decreases) in variations:
Tax losses of the year not considered recoverable	3	17	10
Tax losses from prior years not recoverable (recoverable) in future years	(2)	(1)	(16)
Non-deductible goodwill impairment charge			66
Effect of change in IRES tax rate		25	31
Prior years' IRES	(26)	(38)	(20)
Other net differences, Tax facilities included	(55)	(26)	69
Effective income tax recognized in income statement from continuing operations, excluding IRAP tax	349	727	291
IRAP tax	141	153	112
Total effective income tax recognized in income statement from continuing operations	490	880	403
Effective income tax recognized in income statement from Discontinued operations/Non-current assets held for sale		48	320
Total effective income tax recognized in income statements	490	928	723
Brazil [member]
Income tax effect on increases (decreases) in variations:
Brazil: different rate compared to theoretical rate in force in Italy	34	11	51
Brazil: incentive on investments in the north-east of the country	€ (31)	€ (31)	€ (25)

XML

Inventories - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of inventories [line items]
Changes of inventories	€ 20
Inventories	290	€ 270
Inventories net of provision for loss	13	27
Domestic [member]
Disclosure of inventories [line items]
Inventories	259	226
Brazil [member]
Disclosure of inventories [line items]
Inventories	€ 31	€ 42

XML

Inventories - Schedule of Inventories (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Classes of current inventories [abstract]
Raw materials and supplies	€ 1	€ 1
Work in progress and semi-finished products	3	3
Finished goods	286	266
Total	€ 290	€ 270

XML

Trade and Miscellaneous Receivables and other Current Assets - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of trade and miscellaneous receivables and other current assets [line Items]
Increase in trade and miscellaneous receivables and other current assets		€ 467
Change in receivables		328
Trade receivables	€ 3,500	3,925
Provision for bad debts	597	648
Non-current receivables	43	82
Provision of bad debts write down value	211	279
Receivables written off as uncollectible	386	369
Other receivables	645	784
Provision for bad debts, other	54	72
Tax returns other taxes and value added tax receivable	23
Government grants	207
Current prepaid expenses	513	427
Building lease	30	32
Rent and maintenance payments	142	75
Insurance expense	7	27
0 - 90 days (Overdue) [member]
Disclosure of trade and miscellaneous receivables and other current assets [line Items]
Change in receivables		30
Miscellaneous receivables [member]
Disclosure of trade and miscellaneous receivables and other current assets [line Items]
Trade receivables	45
Social Security and Assistance Agencies [member]
Disclosure of trade and miscellaneous receivables and other current assets [line Items]
Trade receivables	24
Factoring of receivables [member]
Disclosure of trade and miscellaneous receivables and other current assets [line Items]
Trade receivables	60
Brazil business unit [member]
Disclosure of trade and miscellaneous receivables and other current assets [line Items]
Change in receivables		180
Impact of a negative exchange rate adjustment		83
Trade receivables		646
Current tax assets	111
Brazil business unit [member] | 0 - 90 days (Overdue) [member]
Disclosure of trade and miscellaneous receivables and other current assets [line Items]
Impact of a negative exchange rate adjustment		13
Change in overdue receivable, gross of exchange rate difference		17
TIM S.p.A [member]
Disclosure of trade and miscellaneous receivables and other current assets [line Items]
Change in receivables		€ 122
Trade receivables	2,425
TIM S.p.A [member] | More than 365 days [member]
Disclosure of trade and miscellaneous receivables and other current assets [line Items]
Change in receivables	€ 53

XML

Trade and Miscellaneous Receivables and Other Current Assets - Summary of Increase in Trade and Miscellaneous Receivables and Other Current Assets (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure of trade and miscellaneous receivables and other current assets amount [Line Items]
Amounts due on construction contracts	€ 34	€ 33
Trade receivables:
Receivables from customers	2,528	3,110
Receivables from other telecommunications operators	972	815
Trade receivables	3,500	3,925
Miscellaneous receivables and other current assets:
Other receivables	645	784
Trade and miscellaneous prepaid expenses	780	684
Miscellaneous receivables and other current assets	1,425	1,468
Total	4,959	5,426
FInancial instruments IAS 39 [member]
Trade receivables:
Receivables from customers	2,528	3,110
Receivables from other telecommunications operators	972	815
Trade receivables	3,500	3,925
Miscellaneous receivables and other current assets:
Other receivables	154	166
Miscellaneous receivables and other current assets	154	166
Total	€ 3,654	€ 4,091

XML

Trade and Miscellaneous Receivables and Other Current Assets - Summary of Aging of Financial Instruments Included in Trade and Miscellaneous Receivables and Other Current Assets (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Aging Of Trade And Miscellaneous Receivables And Other Current Assets [Line items]
Total	€ 4,959	€ 5,426
IAS 39 financial instruments [member]
Disclosure Of Aging Of Trade And Miscellaneous Receivables And Other Current Assets [Line items]
Total	3,654	4,091
Total Current	2,781	3,109
Overdue	873	982
IAS 39 financial instruments [member] | 0-90 days [member]
Disclosure Of Aging Of Trade And Miscellaneous Receivables And Other Current Assets [Line items]
Overdue	300	373
IAS 39 financial instruments [member] | 91-180 days [member]
Disclosure Of Aging Of Trade And Miscellaneous Receivables And Other Current Assets [Line items]
Overdue	178	162
IAS 39 financial instruments [member] | 181-365 days [member]
Disclosure Of Aging Of Trade And Miscellaneous Receivables And Other Current Assets [Line items]
Overdue	188	186
IAS 39 financial instruments [member] | More than 365 days [member]
Disclosure Of Aging Of Trade And Miscellaneous Receivables And Other Current Assets [Line items]
Overdue	€ 207	€ 261

XML

Trade and Miscellaneous Receivables and Other Current Assets - Summary of Provision for Bad Debts (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of provision for bad debts [abstract]
Beginning balance	€ 648	€ 614
Provision charges to the income statement	242	233
Utilization and decreases	(278)	(220)
Exchange differences and other changes	(15)	21
Ending balance	€ 597	€ 648

XML

Trade and Miscellaneous Receivables and Other Current Assets - Summary of Other Receivables (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure of other receivables [abstract]
Advances to suppliers	€ 69	€ 41
Receivables from employees	12	26
Tax receivables	135	228
Receivables for grants from the government and public entities	207	242
Sundry receivables	222	247
Total	€ 645	€ 784

XML

Discontinued Operations/Non-Current Assets Held for Sale - Additional Information (Detail) € in Millions, $ in Millions			12 Months Ended
	Mar. 08, 2016 EUR (€)	Mar. 08, 2016 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 EUR (€)	Dec. 31, 2015
Noncurrent Assets Held For Sale And Discontinued Operations [Line Items]
Proceeds from sale that result in a loss of control of subsidiaries or other businesses, net of cash disposed of | €				€ 492
Sofora-Telecom Argentina [member]
Noncurrent Assets Held For Sale And Discontinued Operations [Line Items]
Proceeds from discontinued operations		$ 550.6	$ 960.0
Proceeds from sale that result in a loss of control of subsidiaries or other businesses, net of cash disposed of | €	€ 492
Proceeds from discontinued operations, respect to ancillary agreements		$ 50.0
Sofora-Telecom Argentina [member] | Fintech [member]
Noncurrent Assets Held For Sale And Discontinued Operations [Line Items]
Proceeds from discontinued operations			329.5
Telecom argentina group [member]
Noncurrent Assets Held For Sale And Discontinued Operations [Line Items]
Proceeds generated by making technical support services available			$ 30.0
Average foreign exchange rate pesos per euro				15.7981	10.2689

XML

Discontinued Operations/non-current Assets Held for Sale - Summary of Income Statement Impacts from The Sofora-telecom Argentina Group and its Sale (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
operations/Non-current assets held for sale:
Gains (losses) on disposals of non-current assets	€ 11	€ 14	€ 336
Income statement effects on the selling entities:
Profit (loss) from Discontinued operations/Non-current assets held for sale		47	611
Attributable to:
Non-controllinginterests		50	522
Sofora-Telecom Argentina [member]
operations/Non-current assets held for sale:
Revenues		504	3,943
Other income		1	4
Operating expenses		(372)	(2,892)
Gains (losses) on disposals of non-current assets			2
Goodwill and other non-current assets net impairment losses			(22)
Operating profit (loss)		133	1,035
Finance income (expenses)		(42)	(94)
Profit (loss) before tax from Discontinued operations/Non-current assets held for sale		91	941
Income tax expense		(32)	(320)
Profit (loss) after tax from Discontinued operations/Non-current assets held for sale		59	621
Other minor income statement effects:
Other income/(expenses) connected to sales in previous years	€ 0	0	0
Other minor entries			(10)
Other minor income statement effects			(10)
Profit (loss) from Discontinued operations/Non-current assets held for sale		59	611
Income statement effects on the selling entities:
Net gains on disposal		307
Transfer to the separate consolidated dated income statement of the Reserve for exchange differences on translating foreign operations		(304)
Income tax expense relating to the disposal		(15)
Income statement effects on selling entities		(12)
Profit (loss) from Discontinued operations/Non-current assets held for sale		47	611
Attributable to:
Owners of the Parent		(3)	89
Non-controllinginterests		€ 50	€ 522

XML

Discontinued Operations/non-current Assets Held for Sale - Summary of Earnings Per Share from Discontinued Operations/non-current Assets Held for Sale (Detail)	12 Months Ended
	Dec. 31, 2015 € / shares
Basic and Diluted Earnings Per Share (EPS) from Discontinued operations/Non-currentassets held for sale
Basic and diluted earnings per share	€ 0.03
Savings Share [member]
Basic and Diluted Earnings Per Share (EPS) from Discontinued operations/Non-currentassets held for sale
Basic and diluted earnings per share	€ 0.03

XML

Discontinued Operations/non-current Assets Held for Sale - Summary of Consolidated Statements of Cash Flows and its Net Impacts, Expressed in "Discontinued Operations/non-current Assets Held for Sale" (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Discontinued operations/Non-current assets held for sale:
Cash flows from (used in) operating activities	€ 130	€ 810
Cash flows from (used in) investing activities	(117)	(1,058)
Cash flows from (used in) financing activities	(58)	229
Total	€ (45)	€ (19)

XML

Equity - Summary of Components of Equity (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure of classes of share capital [abstract]
Equity attributable to owners of the Parent	€ 21,557	€ 21,207
Non-controllinginterests	2,226	2,346
Total	€ 23,783	€ 23,553	€ 21,249	€ 21,584

XML

Equity - Summary of Reserves and Other Equity Interest (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of classes of share capital [abstract]
Share capital	€ 11,587	€ 11,587
Additional paid-incapital	2,094	2,094
Other reserves and retained earnings (accumulated losses), including profit (loss) for the year	7,876	7,526
Total	21,557	21,207
Reserve for available-for-sale financial assets	42	39
Reserve for hedging instruments	(582)	(551)
Reserve for exchange differences on translating foreign operations	(955)	(366)
Reserve for remeasurements of employee defined benefit plans (IAS 19)	(104)	(113)
Share of other comprehensive income (loss) of associates and joint ventures accounted for using the equity method	0	0	€ 0
Sundry reserves and retained earnings (accumulated losses), including profit (loss) for the year	€ 9,475	€ 8,517

XML

Equity - Additional Information (Detail) - EUR (€) € / shares in Units, € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of classes of share capital [line items]
Treasury shares	€ 90	€ 90
Share capital	11,587
Total value of ordinary treasury shares	510
Deduction from share capital issued	90
Additional paid-in capital	2,094	2,094
Increase in additional paid in capital		0
Reserve for available-for-sale financial assets	42
Increase in reserve for available-for-sale financial assets	3
Fair value adjustment of other available-for-sale financial assets to parent	6
Unrealized gains on investment	4
Reserve expressed net of deferred tax liabilities	11	13
Reserve for cash flow hedges	582	551
Net deferred tax assets	(164)	(167)
Reserve for exchange differences on translating foreign operations	955	366
Reserve for remeasurements of employee defined benefit plans	104	113
Other profits (losses) of associates and joint ventures accounted for using the equity method	0	0	€ 0
Sundry reserves and retained earnings (accumulated losses), including profit (loss)	9,475	8,517
Equity attributable to non-controlling interests	€ 2,226	2,346
TIM S.p.A [member]
Disclosure of classes of share capital [line items]
Description to dividend distribution	The profit shown in the duly approved separate financial statements, less the amount appropriated to the legal reserve, must be distributed to the holders of savings shares in an amount up to 5% of the 0.55 euros per share
Percentage of distribution to share holders	2.00%
Distribution to share holders per share	€ 0.55
Number of years dividend distribution difference carried over to preferred dividends	Two
Pre-emptive right in reimbursement of capital per share	€ 0.55
Bottom of range [member] | TIM S.p.A [member]
Disclosure of classes of share capital [line items]
Percentage of distribution to share holders	5.00%
Top of range [member] | TIM S.p.A [member]
Disclosure of classes of share capital [line items]
Percentage of distribution to share holders	5.00%
Brazil business unit [member]
Disclosure of classes of share capital [line items]
Reserve for exchange differences on translating foreign operations	€ 955	366
Sofora-Telecom Argentina group [member]
Disclosure of classes of share capital [line items]
Reserve for exchange differences on translating foreign operations	969	414
Business unit [member] | Brazil [member]
Disclosure of classes of share capital [line items]
Equity attributable to non-controlling interests	1,556
Business unit [member] | Italy [member] | INWIT S.p. A [member]
Disclosure of classes of share capital [line items]
Equity attributable to non-controlling interests	609
Telecom Italia Finance [member]
Disclosure of classes of share capital [line items]
Unrealized gains on securities portfolio	€ 5
American Depositary Receipts [member] | J P Morgan Chase Bank [member]
Disclosure of classes of share capital [line items]
Number of shares corresponding to ADS	10
Reserve for remeasurements of employee defined benefit plans (IAS 19) [member]
Disclosure of classes of share capital [line items]
Net deferred tax assets	€ 26	27
Change in reserve for remeasurement of employee defined benefit plans	9
Sundry reserves and retained earnings (accumulated losses), including profit (loss) for the year [Member]
Disclosure of classes of share capital [line items]
Increase in sundry reserves and retained earnings (accumulated losses), including profit (loss)	958	1,627
Non-controlling interests [member]
Disclosure of classes of share capital [line items]
Reserve for exchange differences on translating foreign operations	471	235
Decrease in non-controlling interests	€ (120)	€ (1,349)

XML

Equity - Summary of Reconciliation Between the Number of Outstanding Shares (Detail) - shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Ordinary Shares issued [member]
Disclosure of classes of share capital [line items]
Beginning balance	15,203,122,583	13,499,911,771	13,470,955,451
Shares issued for plans destined for employees		1,703,210,812	28,956,320
Ending balance	15,203,122,583	15,203,122,583	13,499,911,771
Percentage of Share Capital	71.61%	71.61%	69.13%
Less: Treasury Shares [member]
Disclosure of classes of share capital [line items]
Beginning balance	(163,754,388)	(163,754,388)	(162,216,387)
Shares issued for plans destined for employees			(1,538,001)
Ending balance	(163,754,388)	(163,754,388)	(163,754,388)
Ordinary Shares Outstanding [member]
Disclosure of classes of share capital [line items]
Beginning balance	15,039,368,195	13,336,157,383	13,308,739,064
Shares issued for plans destined for employees		1,703,210,812	27,418,319
Ending balance	15,039,368,195	15,039,368,195	13,336,157,383
Savings Shares Issued and Outstanding [member]
Disclosure of classes of share capital [line items]
Beginning balance	6,027,791,699	6,027,791,699	6,026,120,661
Shares issued for plans destined for employees			1,671,038
Ending balance	6,027,791,699	6,027,791,699	6,027,791,699
Percentage of Share Capital	28.39%	28.39%	30.87%
6.125% Mandatory Convertible Bonds Due 2016 [member] | Ordinary Shares issued [member]
Disclosure of classes of share capital [line items]
Shares issued for the full convertion of the Mandatory Convertible Bond due 2016	0
6.125% Mandatory Convertible Bonds Due 2016 [member] | Less: Treasury Shares [member]
Disclosure of classes of share capital [line items]
Shares issued for the full convertion of the Mandatory Convertible Bond due 2016	0
6.125% Mandatory Convertible Bonds Due 2016 [member] | Ordinary Shares Outstanding [member]
Disclosure of classes of share capital [line items]
Shares issued for the full convertion of the Mandatory Convertible Bond due 2016	0
6.125% Mandatory Convertible Bonds Due 2016 [member] | Savings Shares Issued and Outstanding [member]
Disclosure of classes of share capital [line items]
Shares issued for the full convertion of the Mandatory Convertible Bond due 2016	0
TIM S.p.A [member] | Shares issued [member]
Disclosure of classes of share capital [line items]
Beginning balance	21,230,914,282	19,527,703,470	19,497,076,112
Shares issued for plans destined for employees		1,703,210,812	30,627,358
Ending balance	21,230,914,282	21,230,914,282	19,527,703,470
Percentage of Share Capital	100.00%	100.00%	100.00%
TIM S.p.A [member] | Shares outstanding [member]
Disclosure of classes of share capital [line items]
Beginning balance	21,067,159,894	19,363,949,082	19,334,859,725
Shares issued for plans destined for employees		1,703,210,812	29,089,357
Ending balance	21,067,159,894	21,067,159,894	19,363,949,082
TIM S.p.A [member] | 6.125% Mandatory Convertible Bonds Due 2016 [member] | Shares issued [member]
Disclosure of classes of share capital [line items]
Shares issued for the full convertion of the Mandatory Convertible Bond due 2016	0
TIM S.p.A [member] | 6.125% Mandatory Convertible Bonds Due 2016 [member] | Shares outstanding [member]
Disclosure of classes of share capital [line items]
Shares issued for the full convertion of the Mandatory Convertible Bond due 2016	0

XML

Equity - Summary of Reconciliation Between the Value of Outstanding Shares (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of classes of share capital [line items]
Change in share capital as a result of the full convertion of the Mandatory Convertible Bond due 2016		€ 1,300
Ending balance	€ 11,587
Ordinary Shares issued [member]
Disclosure of classes of share capital [line items]
Beginning balance	8,362	7,425	€ 7,409
Change in share capital as a result of plans destined for employees		937	16
Ending balance	8,362	8,362	7,425
Ordinary Shares issued [member] | 6.125% Mandatory Convertible Bonds Due 2016 [member]
Disclosure of classes of share capital [line items]
Change in share capital as a result of the full convertion of the Mandatory Convertible Bond due 2016	0
Less: Treasury Shares [member]
Disclosure of classes of share capital [line items]
Beginning balance	(90)	(90)	(89)
Change in share capital as a result of plans destined for employees			(1)
Ending balance	(90)	(90)	(90)
Less: Treasury Shares [member] | 6.125% Mandatory Convertible Bonds Due 2016 [member]
Disclosure of classes of share capital [line items]
Change in share capital as a result of the full convertion of the Mandatory Convertible Bond due 2016	0
Ordinary Shares Outstanding [member]
Disclosure of classes of share capital [line items]
Beginning balance	8,272	7,335	7,320
Change in share capital as a result of plans destined for employees		937	15
Ending balance	8,272	8,272	7,335
Ordinary Shares Outstanding [member] | 6.125% Mandatory Convertible Bonds Due 2016 [member]
Disclosure of classes of share capital [line items]
Change in share capital as a result of the full convertion of the Mandatory Convertible Bond due 2016	0
Savings Shares Issued and Outstanding [member]
Disclosure of classes of share capital [line items]
Beginning balance	3,315	3,315	3,314
Change in share capital as a result of plans destined for employees			1
Ending balance	3,315	3,315	3,315
Savings Shares Issued and Outstanding [member] | 6.125% Mandatory Convertible Bonds Due 2016 [member]
Disclosure of classes of share capital [line items]
Change in share capital as a result of the full convertion of the Mandatory Convertible Bond due 2016	0
Share capital [member]
Disclosure of classes of share capital [line items]
Change in share capital as a result of the full convertion of the Mandatory Convertible Bond due 2016		937
Share capital [member] | TIM S.p.A [member]
Disclosure of classes of share capital [line items]
Beginning balance	11,677	10,740	10,723
Change in share capital as a result of plans destined for employees		937	17
Ending balance	11,677	11,677	10,740
Share capital [member] | TIM S.p.A [member] | 6.125% Mandatory Convertible Bonds Due 2016 [member]
Disclosure of classes of share capital [line items]
Change in share capital as a result of the full convertion of the Mandatory Convertible Bond due 2016	0
Share capital outstanding [member] | TIM S.p.A [member]
Disclosure of classes of share capital [line items]
Beginning balance	11,587	10,650	10,634
Change in share capital as a result of plans destined for employees		937	16
Ending balance	11,587	€ 11,587	€ 10,650
Share capital outstanding [member] | TIM S.p.A [member] | 6.125% Mandatory Convertible Bonds Due 2016 [member]
Disclosure of classes of share capital [line items]
Change in share capital as a result of the full convertion of the Mandatory Convertible Bond due 2016	€ 0

XML

Equity - Summary of Sundry Reserves and Retained Earnings (Accumulated Losses), Including Profit (Loss) (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of Sundry Reserves and Retained Earnings Accumulated Losses Increases [Line Items]
Profit (loss) for the year attributable to Owners of the Parent	€ 1,121	€ 1,808	€ (70)
Dividends approved-TIM S.p.A.	(230)	(204)	(291)
Grant of equity instruments	(6)	1	10
Sundry reserves and retained earnings (accumulated losses), including profit (loss) for the year [Member]
Disclosure of Sundry Reserves and Retained Earnings Accumulated Losses Increases [Line Items]
Profit (loss) for the year attributable to Owners of the Parent	1,121	1,808
Dividends approved-TIM S.p.A.	(166)	(166)	(166)
Grant of equity instruments	(6)	1	€ 1
Other changes	9	(16)
Change for the year in Sundry reserves and retained earnings (accumulated losses), including profit (loss) for the year	€ 958	€ 1,627

XML

Equity - Summary of Equity Attributable to Non-controlling Interests (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of Non Controlling Interests [Line Items]
Profit (loss) for the year attributable to Non-controlling interests	€ 166	€ 158	€ 731
Disposal of the Sofora-Telecom Argentina group		(1,582)
Non-controlling interests [member]
Disclosure of Non Controlling Interests [Line Items]
Profit (loss) for the year attributable to Non-controlling interests	166	158
Group Company dividends paid to non-controlling shareholders	(64)	(38)
Changes in the Reserve for exchange differences on translating foreign operations	(236)	109
Disposal of the Sofora-Telecom Argentina group		(1,582)
Other changes	14	4
Change for the year in Equity attributable to Non-Controlling interests	€ (120)	€ (1,349)

XML

Financial Liabilities (Non-current and Current) - Summary of Non-current and Current Financial Liabilities (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Financial payables (medium/long-term):
Bonds	€ 18,119	€ 18,537
Bonds	20,334	21,126
Convertible Bonds	1,862	1,832
Amounts due to banks	3,798	5,461
Other financial payables	161	306
Non current financial liabilities	23,940	26,136
Finance lease liabilities (medium/long-term)	2,249	2,444
Short term of finance lease liabilities (medium/long term)	181	192
Other financial liabilities (medium/long-term):
Other liabilities	0	0
Other non current financial liabilities	1,919	1,889
Noncurrent financial liabilities	28,108	30,469
Other current financial liabilities	75	80
Financial payables (short-term):
Bonds	2,215	2,589
Convertible Bonds	6	6
Amounts due to banks	2,183	1,072
Other financial payables	96	117
Financial payables (short-term)	4,500	3,784
Finance lease liabilities (short-term)	181	192
Total Financial liabilities (Gross financial debt)	32,864	34,525
Other financial liabilities (short-term):
Other liabilities	0	0
Other current financial liabilities	75	80
Current financial liabilities	4,756	4,056
Financial liabilities directly associated with Discontinued operations/Non-currentassets held for sale	0	0
Total Financial liabilities (Gross financial debt)	32,864	34,525
Hedging derivatives relating to hedged items classified as current and non-currentassets/liabilities of a financial nature	30,327
Additional cash flow information required by IAS 7 [member]
Financial payables (medium/long-term):
Bonds	20,334	21,126
Convertible Bonds	1,868	1,838
Amounts due to banks	5,080	6,038
Other financial payables	175	319
Non current financial liabilities	27,457	29,321
Short term of financial payables (medium/long term)	3,517	3,185
Finance lease liabilities (medium/long-term)	2,430	2,636
Short term of finance lease liabilities (medium/long term)	181	192
Other financial liabilities (medium/long-term):
Other liabilities	0	0
Noncurrent financial liabilities	1,994	1,969
Other current financial liabilities	75	80
Financial payables (short-term):
Amounts due to banks	901	495
Financial payables (short-term)	82	104
Finance lease liabilities (short-term)	181	192
Financial payables current	983	599
Noncurrent assets or disposal groups classified as held for sale or as held for distribution to owners	0	0
Total Financial liabilities (Gross financial debt)	32,864	34,525
Other financial liabilities (short-term):
Other current financial liabilities	75	80
Total Financial liabilities (Gross financial debt)	32,864	34,525
Total	31,087	31,776
Cash transaction [member] | Additional cash flow information required by IAS 7 [member] | Receipts or issues [member]
Financial payables (medium/long-term):
Bonds	2,250
Amounts due to banks	324
Non current financial liabilities	2,574
Finance lease liabilities (medium/long-term)	56
Other financial liabilities (medium/long-term):
Other liabilities	0
Financial payables (short-term):
Noncurrent assets or disposal groups classified as held for sale or as held for distribution to owners	0
Total Financial liabilities (Gross financial debt)	2,630
Other financial liabilities (short-term):
Total Financial liabilities (Gross financial debt)	2,630
Total	2,630
Cash transaction [member] | Additional cash flow information required by IAS 7 [member] | Payments and refunds [member]
Financial payables (medium/long-term):
Bonds	(2,023)
Amounts due to banks	(1,145)
Other financial payables	(111)
Non current financial liabilities	(3,279)
Short term of financial payables (medium/long term)	(3,258)
Finance lease liabilities (medium/long-term)	(147)
Short term of finance lease liabilities (medium/long term)	(147)
Other financial liabilities (medium/long-term):
Other liabilities	0
Financial payables (short-term):
Finance lease liabilities (short-term)	(147)
Noncurrent assets or disposal groups classified as held for sale or as held for distribution to owners	0
Total Financial liabilities (Gross financial debt)	(3,426)
Other financial liabilities (short-term):
Total Financial liabilities (Gross financial debt)	(3,426)
Total	(3,426)
Non cash transaction [member] | Additional cash flow information required by IAS 7 [member] | Exchange differences on translation [Member]
Financial payables (medium/long-term):
Bonds	(873)
Amounts due to banks	(219)
Other financial payables	(18)
Non current financial liabilities	(1,110)
Short term of financial payables (medium/long term)	(153)
Finance lease liabilities (medium/long-term)	(65)
Short term of finance lease liabilities (medium/long term)	(4)
Other financial liabilities (medium/long-term):
Other liabilities	0
Noncurrent financial liabilities	156
Other current financial liabilities	(4)
Financial payables (short-term):
Finance lease liabilities (short-term)	(4)
Noncurrent assets or disposal groups classified as held for sale or as held for distribution to owners	0
Total Financial liabilities (Gross financial debt)	(1,019)
Other financial liabilities (short-term):
Other current financial liabilities	(4)
Total Financial liabilities (Gross financial debt)	(1,019)
Total	(209)
Non cash transaction [member] | Additional cash flow information required by IAS 7 [member] | Fair value adjustments [member]
Financial payables (medium/long-term):
Bonds	(107)
Non current financial liabilities	(107)
Short term of financial payables (medium/long term)	(25)
Other financial liabilities (medium/long-term):
Other liabilities	0
Noncurrent financial liabilities	(128)
Other current financial liabilities	(2)
Financial payables (short-term):
Noncurrent assets or disposal groups classified as held for sale or as held for distribution to owners	0
Total Financial liabilities (Gross financial debt)	(235)
Other financial liabilities (short-term):
Other current financial liabilities	(2)
Total Financial liabilities (Gross financial debt)	(235)
Total	(52)
Non cash transaction [member] | Additional cash flow information required by IAS 7 [member] | Other changes [Member]
Financial payables (medium/long-term):
Bonds	(39)
Convertible Bonds	30
Amounts due to banks	82
Other financial payables	(15)
Non current financial liabilities	58
Short term of financial payables (medium/long term)	3,768
Finance lease liabilities (medium/long-term)	(50)
Short term of finance lease liabilities (medium/long term)	140
Other financial liabilities (medium/long-term):
Other liabilities	0
Noncurrent financial liabilities	(3)
Other current financial liabilities	1
Financial payables (short-term):
Amounts due to banks	406
Financial payables (short-term)	(22)
Finance lease liabilities (short-term)	140
Financial payables current	384
Noncurrent assets or disposal groups classified as held for sale or as held for distribution to owners	0
Total Financial liabilities (Gross financial debt)	389
Other financial liabilities (short-term):
Other current financial liabilities	1
Total Financial liabilities (Gross financial debt)	389
Total	368
Hedging derivatives [member]
Other financial liabilities (medium/long-term):
Hedging derivatives relating to hedged items classified as non-currentassets/liabilities of a financial nature	1,914	1,876
Financial payables (short-term):
Financial liabilities directly associated with Discontinued operations/Non-currentassets held for sale	71	69
Other financial liabilities (short-term):
Hedging derivatives relating to hedged items classified as current assets/liabilities of a financial nature	71	69
Hedging derivatives [member] | Additional cash flow information required by IAS 7 [member]
Financial payables (medium/long-term):
Finance lease liabilities (medium/long-term)	1,985	1,945
Other financial liabilities (short-term):
Hedging derivatives relating to hedged items classified as current and non-currentassets/liabilities of a financial nature	1,755	2,682
Hedging derivatives [member] | Non cash transaction [member] | Additional cash flow information required by IAS 7 [member] | Exchange differences on translation [Member]
Financial payables (medium/long-term):
Finance lease liabilities (medium/long-term)	165
Other financial liabilities (short-term):
Hedging derivatives relating to hedged items classified as current and non-currentassets/liabilities of a financial nature	(768)
Hedging derivatives [member] | Non cash transaction [member] | Additional cash flow information required by IAS 7 [member] | Fair value adjustments [member]
Financial payables (medium/long-term):
Finance lease liabilities (medium/long-term)	(128)
Other financial liabilities (short-term):
Hedging derivatives relating to hedged items classified as current and non-currentassets/liabilities of a financial nature	(180)
Hedging derivatives [member] | Non cash transaction [member] | Additional cash flow information required by IAS 7 [member] | Other changes [Member]
Financial payables (medium/long-term):
Finance lease liabilities (medium/long-term)	3
Other financial liabilities (short-term):
Hedging derivatives relating to hedged items classified as current and non-currentassets/liabilities of a financial nature	21
Non- hedging derivatives [member]
Financial payables (medium/long-term):
Non-hedging derivatives	5	13
Other financial liabilities (medium/long-term):
Non-hedging derivatives	5	13
Other financial liabilities (short-term):
Non-hedging derivatives	4	11
Non hedging derivatives	4	11
Non- hedging derivatives [member] | Additional cash flow information required by IAS 7 [member]
Financial payables (medium/long-term):
Non-hedging derivatives	9	24
Other financial liabilities (medium/long-term):
Non-hedging derivatives	9	24
Other financial liabilities (short-term):
Non-hedging derivatives	22	67
Non hedging derivatives	22	€ 67
Non- hedging derivatives [member] | Non cash transaction [member] | Additional cash flow information required by IAS 7 [member] | Exchange differences on translation [Member]
Financial payables (medium/long-term):
Non-hedging derivatives	(9)
Other financial liabilities (medium/long-term):
Non-hedging derivatives	(9)
Other financial liabilities (short-term):
Non-hedging derivatives	(42)
Non hedging derivatives	(42)
Non- hedging derivatives [member] | Non cash transaction [member] | Additional cash flow information required by IAS 7 [member] | Fair value adjustments [member]
Other financial liabilities (short-term):
Non-hedging derivatives	(3)
Non hedging derivatives	(3)
Non- hedging derivatives [member] | Non cash transaction [member] | Additional cash flow information required by IAS 7 [member] | Other changes [Member]
Financial payables (medium/long-term):
Non-hedging derivatives	(6)
Other financial liabilities (medium/long-term):
Non-hedging derivatives	€ (6)

XML

Financial Liabilities (Non-Current and Current) - Summary of Gross Financial Debt (Detail) € in Millions, $ in Millions	Dec. 31, 2017 EUR (€)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 EUR (€)	Dec. 31, 2016 USD ($)
Disclosure of financial liabilities [line items]
Financial liabilities	€ 32,864		€ 34,525
USD [member]
Disclosure of financial liabilities [line items]
Financial liabilities	5,977	$ 7,168	7,119	$ 7,504
GBP [member]
Disclosure of financial liabilities [line items]
Financial liabilities	1,427	1,266	2,356	2,017
BRL [member]
Disclosure of financial liabilities [line items]
Financial liabilities	1,478	5,863	2,075	7,128
JPY [member]
Disclosure of financial liabilities [line items]
Financial liabilities	148	$ 20,031	162	$ 20,032
EUR [member]
Disclosure of financial liabilities [line items]
Financial liabilities	€ 23,834		€ 22,813

XML

Financial Liabilities (Non-Current and Current) - Summary of Gross Financial Debt by Effective Interest Rate (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure of financial liabilities [line items]
Financial liabilities	€ 32,864	€ 34,525
Total	32,864	34,525
Continuing operations [member] | Up to 2.5% [member] | Derivative Hedging Instruments [member]
Disclosure of financial liabilities [line items]
Financial liabilities	13,071	9,410
Continuing operations [member] | Up to 2.5% [member] | Non Designated [Member]
Disclosure of financial liabilities [line items]
Financial liabilities	5,005	5,041
Continuing operations [member] | From 2.5% to 5% [member] | Derivative Hedging Instruments [member]
Disclosure of financial liabilities [line items]
Financial liabilities	6,631	7,775
Continuing operations [member] | From 2.5% to 5% [member] | Non Designated [Member]
Disclosure of financial liabilities [line items]
Financial liabilities	10,571	9,368
Continuing operations [member] | From 5% to 7.5% [member] | Derivative Hedging Instruments [member]
Disclosure of financial liabilities [line items]
Financial liabilities	7,366	10,586
Continuing operations [member] | From 5% to 7.5% [member] | Non Designated [Member]
Disclosure of financial liabilities [line items]
Financial liabilities	11,265	12,629
Continuing operations [member] | From 7.5% to 10% [member] | Derivative Hedging Instruments [member]
Disclosure of financial liabilities [line items]
Financial liabilities	1,849	1,430
Continuing operations [member] | From 7.5% to 10% [member] | Non Designated [Member]
Disclosure of financial liabilities [line items]
Financial liabilities	2,690	3,918
Continuing operations [member] | Over 10% [member] | Derivative Hedging Instruments [member]
Disclosure of financial liabilities [line items]
Financial liabilities	1,203	2,428
Continuing operations [member] | Over 10% [member] | Non Designated [Member]
Disclosure of financial liabilities [line items]
Financial liabilities	589	673
Continuing operations [member] | Accruals/Deferrals, MTM and Derivative [member] | Derivative Hedging Instruments [member]
Disclosure of financial liabilities [line items]
Financial liabilities	2,744	2,896
Continuing operations [member] | Accruals/Deferrals, MTM and Derivative [member] | Non Designated [Member]
Disclosure of financial liabilities [line items]
Financial liabilities	€ 2,744	€ 2,896

XML

Financial Liabilities (Non-Current and Current) - Summary of Maturities of Financial Liabilities (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure of financial liabilities [line items]
Bonds	€ 19,775	€ 20,417
Current financial liabilities	4,756	4,056
Total	32,864	€ 34,525
Debt Repayment [member]
Disclosure of financial liabilities [line items]
Bonds	21,775
Loans and other financial liabilities	5,183
Finance lease liabilities	2,387
Total	29,345
Current financial liabilities	982
Total	30,327
2018 [member] | Debt Repayment [member]
Disclosure of financial liabilities [line items]
Bonds	1,739
Loans and other financial liabilities	1,264
Finance lease liabilities	138
Total	3,141
Current financial liabilities	982
Total	4,123
2019 [member] | Debt Repayment [member]
Disclosure of financial liabilities [line items]
Bonds	2,424
Loans and other financial liabilities	1,731
Finance lease liabilities	114
Total	4,269
Total	4,269
2020 [member] | Debt Repayment [member]
Disclosure of financial liabilities [line items]
Bonds	1,267
Loans and other financial liabilities	603
Finance lease liabilities	113
Total	1,983
Total	1,983
2021 [member] | Debt Repayment [member]
Disclosure of financial liabilities [line items]
Bonds	564
Loans and other financial liabilities	628
Finance lease liabilities	113
Total	1,305
Total	1,305
2022 [member] | Debt Repayment [member]
Disclosure of financial liabilities [line items]
Bonds	3,087
Loans and other financial liabilities	714
Finance lease liabilities	83
Total	3,884
Total	3,884
Beyond 5 years [member] | Debt Repayment [member]
Disclosure of financial liabilities [line items]
Bonds	12,694
Loans and other financial liabilities	243
Finance lease liabilities	1,826
Total	14,763
Total	€ 14,763

XML

Financial Liabilities (Non-Current and Current) - Summary of Components of Financial Liabilities (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of financial liabilities [line items]
Non-current portion	€ 18,119	€ 18,537
Current portion	2,215	2,589
Total carrying amount	20,334	21,126
Fair value adjustment and measurement at amortized cost	559	709
Total nominal repayment amount	19,775	20,417
Total nominal repayment amount	642
Convertible Bonds Payable in Euros Due 2022 [member]
Disclosure of financial liabilities [line items]
Non-current portion	1,862	1,832
Current portion	6	6
Total carrying amount	1,868	1,838
Fair value adjustment and measurement at amortized cost	132	162
Total nominal repayment amount	€ 2,000	€ 2,000

XML

Financial Liabilities (Non-Current and Current) - Additional Information (Detail) € in Thousands						12 Months Ended
	Jan. 16, 2018 EUR (€)	Dec. 21, 2017 EUR (€)	Apr. 10, 2017 EUR (€)	Dec. 14, 2015 EUR (€)	Jul. 30, 2014 EUR (€)	Dec. 31, 2017 EUR (€) CreditFacility	Dec. 31, 2016 EUR (€)
Disclosure of financial liabilities [line items]
Nominal repayment amount of bonds and convertible bonds						€ 21,775,000	€ 22,417,000
Decrease in repayment due to new issue						642,000
Long term amount due to banks						3,798,000	5,461,000
Decrease in long term due to banks						1,663,000
Short term amount due to banks						2,183,000	1,072,000
Current portion of long term due to banks						1,282,000
Long term other financial payables						161,000
Long term other financial payables							306,000
Decrease in long term other financial payables						145,000
Amount of loan				€ 500,000
Long term finance lease liabilities						2,249,000	2,444,000
Short term finance lease liabilities						€ 181,000	192,000
Financial assets pledged as collateral for liabiliities or contingent liabilities				€ 1,650
Number of revolving credit facility | CreditFacility						2
Revolving credit facility	€ 5,000,000
Maturity of facility	5 years
Top of range [member]
Disclosure of financial liabilities [line items]
Interest of loan				35.00%
TIM S.p.A. [member]
Disclosure of financial liabilities [line items]
Maturity period	December 2018	July 2020
Early repayment of debt	€ 2,000,000	€ 150,000
Debt residual principal		€ 75,000
Revolving Credit Facilities expiring May 24, 2019 [Member]
Disclosure of financial liabilities [line items]
Revolving credit facility						€ 4,000,000
Maturity of facility						Expiring May 24, 2019
Revolving Credit Facilities Expiring March 25, 2020 [Member]
Disclosure of financial liabilities [line items]
Revolving credit facility						€ 3,000,000
Maturity of facility						March 25, 2020
bilateral term loans expiring in November 2019 [member]
Disclosure of financial liabilities [line items]
Maturity period						November 2019
Term loan						€ 134,000
Bilateral term loans expiring in July 2020 [member]
Disclosure of financial liabilities [line items]
Maturity period						July 2020
Term loan						€ 75,000
Hedging derivatives [member]
Disclosure of financial liabilities [line items]
Non-current derivative liabilities						1,914,000	1,876,000
Current derivative liabilities						71,000	69,000
Non- hedging derivatives [member]
Disclosure of financial liabilities [line items]
Non-current derivative liabilities						5,000	13,000
Current derivative liabilities						4,000
Decrease in derivative liabilities						7,000	11,000
TELECOM ITALIA FINANCE S.A. [Member]
Disclosure of financial liabilities [line items]
Amount of loan			€ 20,000,000
Maturity period			April 2019
European investment bank [member]
Disclosure of financial liabilities [line items]
Nominal repayment amount of bonds and convertible bonds						1,950,000
Direct risk in loan				€ 500,000	€ 300,000	800,000
Secured loan amount						€ 1,150,000
Nominal amount of hedging instrument					1,150,000,000
Financial assets pledged as collateral for liabiliities or contingent liabilities				€ 1,350,000
Banca regionale europea [member] | Bilateral term loans expiring in July 2019 [member]
Disclosure of financial liabilities [line items]
Maturity period						July 2019
Term loan						€ 200,000
I C B C [member]
Disclosure of financial liabilities [line items]
Maturity period						July 2020
Term loan						€ 120,000
Intesa Sanpaolo [member] | Bilateral Term Loans Expiring in August 2021 [Member]
Disclosure of financial liabilities [line items]
Maturity period						August 2021
Term loan						€ 200,000
Intesa Sanpaolo [member] | Bilateral term loans expiring in December 2018 [member]
Disclosure of financial liabilities [line items]
Maturity period						December 2018
Term loan						€ 2,000,000
Intesa Sanpaolo [member] | Hot money expiring in February 2018 [member]
Disclosure of financial liabilities [line items]
Maturity period						December 2018
Term loan						€ 200,000
Banca Popolaredell Emilia Romagna [member] | Hot money matured on February 15, 2018 [member]
Disclosure of financial liabilities [line items]
Maturity period						February 15, 2018
Term loan						€ 250,000
Convertible Bonds Payable in Euros Due 2022 [member]
Disclosure of financial liabilities [line items]
Unsecured equity-linked bond of convertible bonds						€ 2,000,000
Coupon rate						1.125%
Decrease in repayment due to new issue						€ 2,000,000	€ 2,000,000

XML

Financial Liabilities (Non-Current and Current) - Summary of Bonds Issued (Detail) € in Millions, £ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017 EUR (€)	Dec. 31, 2017 USD ($)	Dec. 31, 2017 GBP (£)	Dec. 31, 2016 EUR (€)
Disclosure of financial liabilities [line items]
Amount	€ 19,775.0			€ 20,417.0
Nominal repayment amount	21,775.0			€ 22,417.0
Market value	24,300.0
TIM S.p.A [member]
Disclosure of financial liabilities [line items]
Nominal repayment amount	16,227.0
Market value	17,462.0
TIM S.p.A [member] | Bonds With 4.750 % Interest Maturing May 25, 2018 [Member]
Disclosure of financial liabilities [line items]
Amount	592.9
Nominal repayment amount	€ 593.0
Coupon	4.75%
Issue date	May 25, 2011
Maturity date	May 25, 2018
Issue price	99.889%
Market price	101.905%
Market value	€ 604.0
TIM S.p.A [member] | Bonds With 6.125% Interest Maturing December 14, 2018 [Member]
Disclosure of financial liabilities [line items]
Amount	581.9
Nominal repayment amount	€ 582.0
Coupon	6.125%
Issue date	Jun. 15, 2012
Maturity date	Dec. 14, 2018
Issue price	99.737%
Market price	105.768%
Market value	€ 615.0
TIM S.p.A [member] | Bonds With 5.375% Interest Maturing January 29, 2019 [member]
Disclosure of financial liabilities [line items]
Amount	832.4
Nominal repayment amount	€ 832.0
Coupon	5.375%
Issue date	Jan. 29, 2004
Maturity date	Jan. 29, 2019
Issue price	99.07%
Market price	105.653%
Market value	€ 879.0
TIM S.p.A [member] | Bonds With 4.000% Interest Maturing January 21, 2020 [member]
Disclosure of financial liabilities [line items]
Amount	719.5
Nominal repayment amount	€ 719.0
Coupon	4.00%
Issue date	Dec. 21, 2012
Maturity date	Jan. 21, 2020
Issue price	99.184%
Market price	107.671%
Market value	€ 775.0
TIM S.p.A [member] | Bonds With 4.875% Interest Maturing September 25, 2020 [member]
Disclosure of financial liabilities [line items]
Amount	547.5
Nominal repayment amount	€ 547.0
Coupon	4.875%
Issue date	Sep. 25, 2013
Maturity date	Sep. 25, 2020
Issue price	98.966%
Market price	112.218%
Market value	€ 614.0
TIM S.p.A [member] | Bonds With 4.500% Interest Maturing January 25, 2021 [Member]
Disclosure of financial liabilities [line items]
Amount	563.6
Nominal repayment amount	€ 564.0
Coupon	4.50%
Issue date	Jan. 23, 2014
Maturity date	Jan. 25, 2021
Issue price	99.447%
Market price	112.283%
Market value	€ 633.0
TIM S.p.A [member] | Bonds With 6 Month Euribor Percentage Interest Maturing January 1, 2002 [member]
Disclosure of financial liabilities [line items]
Amount	203.5
Nominal repayment amount	€ 204.0
Coupon	(365.00%)
Issue date	Jan. 01, 2002
Maturity date	Jan. 01, 2022
Issue price	100.00%
Market price	100.00%
Market value	€ 204.0
TIM S.p.A [member] | Bonds With 5.250% Interest Maturing February 10, 2022 [member]
Disclosure of financial liabilities [line items]
Amount	883.9
Nominal repayment amount	€ 884.0
Coupon	5.25%
Issue date	Oct. 02, 2010
Maturity date	Feb. 10, 2022
Issue price	99.295%
Market price	117.798%
Market value	€ 1,041.0
TIM S.p.A [member] | Bonds With 1.125% Interest Maturing March 26, 2022 [member]
Disclosure of financial liabilities [line items]
Amount	2,000.0
Nominal repayment amount	€ 2,000.0
Coupon	1.125%
Issue date	Mar. 26, 2015
Maturity date	Mar. 26, 2022
Issue price	100.00%
Market price	100.347%
Market value	€ 2,007.0
TIM S.p.A [member] | Bonds With 3.250% Interest Maturing January 16, 2023 [member]
Disclosure of financial liabilities [line items]
Amount	1,000.0
Nominal repayment amount	€ 1,000.0
Coupon	3.25%
Issue date	Jan. 16, 2015
Maturity date	Jan. 16, 2023
Issue price	99.446%
Market price	109.909%
Market value	€ 1,099.0
TIM S.p.A [member] | Bonds with 2.500% interest maturing July 19, 2023 [member]
Disclosure of financial liabilities [line items]
Amount	1,000.0
Nominal repayment amount	€ 1,000.0
Coupon	2.50%
Issue date	Jan. 19, 2017
Maturity date	Jul. 19, 2023
Issue price	99.288%
Market price	105.789%
Market value	€ 1,058.0
TIM S.p.A [member] | Bonds With 3.625% Interest Maturing January 19, 2024 [member]
Disclosure of financial liabilities [line items]
Amount	750.0
Nominal repayment amount	€ 750.0
Coupon	3.625%
Issue date	Jan. 20, 2016
Maturity date	Jan. 19, 2024
Issue price	99.632%
Market price	111.698%
Market value	€ 838.0
TIM S.p.A [member] | Bonds With 3.000% Interest Maturing September 30, 2025 [member]
Disclosure of financial liabilities [line items]
Amount	1,000.0
Nominal repayment amount	€ 1,000.0
Coupon	3.00%
Issue date	Sep. 30, 2016
Maturity date	Sep. 30, 2025
Issue price	99.806%
Market price	107.199%
Market value	€ 1,072.0
TIM S.p.A [member] | Bonds With 3.625% Interest Maturing May 25, 2026 [member]
Disclosure of financial liabilities [line items]
Amount	1,000.0
Nominal repayment amount	€ 1,000.0
Coupon	3.625%
Issue date	May 25, 2016
Maturity date	May 25, 2026
Issue price	100.00%
Market price	112.068%
Market value	€ 1,121.0
TIM S.p.A [member] | Bonds with 2.375% interest maturing October 12, 2027 [member]
Disclosure of financial liabilities [line items]
Amount	1,250.0
Nominal repayment amount	€ 1,250.0
Coupon	2.375%
Issue date	Oct. 12, 2017
Maturity date	Oct. 12, 2027
Issue price	99.185%
Market price	100.079%
Market value	€ 1,251.0
TIM S.p.A [member] | Bonds With 5.250% Interest Maturing March 17, 2055 [member]
Disclosure of financial liabilities [line items]
Amount	670.0
Nominal repayment amount	€ 670.0
Coupon	5.25%
Issue date	Mar. 17, 2005
Maturity date	Mar. 17, 2055
Issue price	99.667%
Market price	117.022%
Market value	€ 784.0
TIM S.p.A [member] | Bonds With 6.375% Interest Maturing June 24, 2019 [Member]
Disclosure of financial liabilities [line items]
Amount | £			£ 850.0
Nominal repayment amount	€ 958.0
Coupon	6.375%
Issue date	Jun. 24, 2004
Maturity date	Jun. 24, 2019
Issue price	98.85%
Market price	107.457%
Market value	€ 1,029.0
TIM S.p.A [member] | Bonds With 5.875% Interest Maturing May 19, 2023 [member]
Disclosure of financial liabilities [line items]
Amount | £			£ 375.0
Nominal repayment amount	€ 423.0
Coupon	5.875%
Issue date	May 19, 2006
Maturity date	May 19, 2023
Issue price	99.622%
Market price	117.038%
Market value	€ 495.0
TIM S.p.A [member] | Bonds with 5.303% interest maturing May 30, 2024 [member]
Disclosure of financial liabilities [line items]
Amount | $		$ 1,500.0
Nominal repayment amount	€ 1,423.0
Coupon	5.303%
Issue date	May 30, 2014
Maturity date	May 30, 2024
Issue price	100.00%
Market price	98.25%
Market value	€ 1,398.0
TELECOM ITALIA FINANCE S.A. [Member]
Disclosure of financial liabilities [line items]
Nominal repayment amount	1,015.0
Market value	1,564.0
TELECOM ITALIA FINANCE S.A. [Member] | Bonds With 7.750% Interest Maturing January 24, 2033 [member]
Disclosure of financial liabilities [line items]
Amount	1,015.0
Nominal repayment amount	€ 1,015.0
Coupon	7.75%
Issue date	Jan. 24, 2003
Maturity date	Jan. 24, 2033
Issue price	109.646%
Market price	154.113%
Market value	€ 1,564.0
TELECOM ITALIA CAPITAL S.A. [member]
Disclosure of financial liabilities [line items]
Nominal repayment amount	4,533.0
Market value	5,274.0
TELECOM ITALIA CAPITAL S.A. [member] | Bonds With 6.999% Interest Maturing June 04, 2018 [Member]
Disclosure of financial liabilities [line items]
Amount | $		676.6
Nominal repayment amount	€ 564.0
Coupon	6.999%
Issue date	Jun. 04, 2008
Maturity date	Jun. 04, 2018
Issue price	100.00%
Market price	101.673%
Market value	€ 574.0
TELECOM ITALIA CAPITAL S.A. [member] | Bonds With 7.175% Interest Maturing June 18, 2019 [Member]
Disclosure of financial liabilities [line items]
Amount | $		759.7
Nominal repayment amount	€ 633.0
Coupon	7.175%
Issue date	Jun. 18, 2009
Maturity date	Jun. 18, 2019
Issue price	100.00%
Market price	106.399%
Market value	€ 674.0
TELECOM ITALIA CAPITAL S.A. [member] | Bonds With 6.375% Interest Maturing November 11, 2033 [Member]
Disclosure of financial liabilities [line items]
Amount | $		1,000.0
Nominal repayment amount	€ 834.0
Coupon	6.375%
Issue date	Oct. 29, 2003
Maturity date	Nov. 15, 2033
Issue price	99.558%
Market price	116.568%
Market value	€ 972.0
TELECOM ITALIA CAPITAL S.A. [member] | Bonds With 6.000% Interest Maturing September 30, 2034 [Member]
Disclosure of financial liabilities [line items]
Amount | $		1,000.0
Nominal repayment amount	€ 834.0
Coupon	6.00%
Issue date	Oct. 06, 2004
Maturity date	Sep. 30, 2034
Issue price	99.081%
Market price	111.781%
Market value	€ 932.0
TELECOM ITALIA CAPITAL S.A. [member] | Bonds With 7.200% Interest Maturing July 18, 2036 [Member]
Disclosure of financial liabilities [line items]
Amount | $		1,000.0
Nominal repayment amount	€ 834.0
Coupon	7.20%
Issue date	Jul. 18, 2006
Maturity date	Jul. 18, 2036
Issue price	99.44%
Market price	124.70%
Market value	€ 1,040.0
TELECOM ITALIA CAPITAL S.A. [member] | Bonds With 7.721% Interest Maturing June 04, 2038 [Member]
Disclosure of financial liabilities [line items]
Amount | $		$ 1,000.0
Nominal repayment amount	€ 834.0
Coupon	7.721%
Issue date	Jun. 04, 2008
Maturity date	Jun. 04, 2038
Issue price	100.00%
Market price	129.801%
Market value	€ 1,082.0

XML

Financial Liabilities (Non-Current and Current) (Detail) € in Millions	12 Months Ended
	Dec. 31, 2017 EUR (€)
Telecom Italia S.p.A. 750 million euros 3.6250% maturing 01/19/2024 [Member]
Disclosure of detailed information about borrowings [line items]
Currency	Euro
Amount	€ 1,000
Issue date	Jan. 19, 2017
Telecom Italia S.p.A. 1,000 million euros 3.6250% maturing 05/25/2026 [Member]
Disclosure of detailed information about borrowings [line items]
Currency	Euro
Amount	€ 1,250
Issue date	Oct. 12, 2017
Telecom italia s.P.a. 5.125% 663 MILLION EUROS [member]
Disclosure of detailed information about borrowings [line items]
Currency	Euro
Amount	€ 545
Repayment date	Jan. 20, 2017
Telecom Italia S.p.A. 8.250% 708 million euros [member]
Disclosure of detailed information about borrowings [line items]
Currency	Euro
Amount	€ 628
Repayment date	Sep. 20, 2017
Telecom italia s.p.a. Euribor 3m + 0.79% 400 million euros [member]
Disclosure of detailed information about borrowings [line items]
Currency	GBP
Amount	€ 750
Repayment date	Dec. 15, 2017

XML

Financial Liabilities (Non-Current and Current) (Parenthetical) (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2015
Telecom Italia S.p.A. 750 million euros 3.6250% maturing 01/19/2024 [Member]
Disclosure of detailed information about borrowings [line items]
Bonds interest rate	2.50%
Bonds maturity date	Jul. 19, 2023
Telecom Italia S.p.A. 1,000 million euros 3.6250% maturing 05/25/2026 [Member]
Disclosure of detailed information about borrowings [line items]
Bonds interest rate	2.375%
Bonds maturity date	Oct. 12, 2027
Telecom italia s.P.a. 5.125% 663 MILLION EUROS [member]
Disclosure of detailed information about borrowings [line items]
Bonds interest rate	7.00%
Bonds buybacks value		€ 455
Telecom Italia S.p.A. 8.250% 708 million euros [member]
Disclosure of detailed information about borrowings [line items]
Bonds interest rate	4.50%
Bonds buybacks value		€ 372
Telecom italia s.p.a. Euribor 3m + 0.79% 400 million euros [member]
Disclosure of detailed information about borrowings [line items]
Bonds interest rate	7.375%

XML

Financial Liabilities (Non-Current and Current) - Summary of Composition and Drawdown of Committed Credit Lines Available (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Detailed Information About Line Of Credit [Line Items]
Revolving Credit Facility-expiring March 2020	€ 7,000	€ 7,000
Revolving credit facility-expiring may 2019 [member]
Disclosure Of Detailed Information About Line Of Credit [Line Items]
Revolving Credit Facility-expiring March 2020	4,000	4,000
Revolving credit facility-expiring march 2020 [member]
Disclosure Of Detailed Information About Line Of Credit [Line Items]
Revolving Credit Facility-expiring March 2020	€ 3,000	€ 3,000

XML

Financial Liabilities (Non-Current and Current) - Summary of Three Rating Agencies-standard & Poor's, Moody's and Fitch Ratings-rated Tim (Detail)	12 Months Ended
	Dec. 31, 2017
STANDARD & POOR'S [member]
Disclosure Of Detailed Information About Line Of Credit [Line Items]
Rated credit exposures	BB+
Credit rating status	Positive
MOODY'S [member]
Disclosure Of Detailed Information About Line Of Credit [Line Items]
Rated credit exposures	Ba1
Credit rating status	Stable
FITCH RATINGS [member]
Disclosure Of Detailed Information About Line Of Credit [Line Items]
Rated credit exposures	BBB-
Credit rating status	Stable

XML

Financial Risk Management - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Jan. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of risk management strategy related to hedge accounting [line items]
Finance expenses, before the income tax effect	€ 3,303		€ 3,450	€ 5,281
Interest Rate Risk [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Description of interest rates in various markets, basis points		if at December 31, 2017 the interest rates in the various markets in which the TIM Group operates had been 100 basis points higher/lower compared to the actual rates, then higher/lower finance expenses, before the income tax effect, would have been recognized in the income statement of 50 million euros (50 million euros at December 31, 2016).
Finance expenses, before the income tax effect		€ 50	€ 50
Liquidity risk [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Gross financial debt percentage	14.00%
Financial debt nominal repayment	Next 12 months
Financial liabilities repayment term	Next 24 months
Bottom of range [member] | Liquidity risk [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Refinancing requirements term on irrevocable bank lines and liquidity	Refinancing requirements at least for the next 12 months with irrevocable bank lines and liquidity.
Bottom of range [member] | Fixed interest rate [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Percentage of nominal amount on medium long-term non-current financial liabilities	65.00%
Bottom of range [member] | Floating interest rate [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Percentage of nominal amount on medium long-term non-current financial liabilities	25.00%
Top of range [member] | Credit risk [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Deposits	Less than three months
Top of range [member] | Fixed interest rate [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Percentage of nominal amount on medium long-term non-current financial liabilities	75.00%
Top of range [member] | Floating interest rate [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Percentage of nominal amount on medium long-term non-current financial liabilities	35.00%

XML

Financial Risk Management - Summary of Total Financial Liabilities at Nominal Repayment Amount (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure of financial liabilities [line items]
Bonds	€ 19,775	€ 20,417
Total current financial liabilities	4,756	4,056
Total	32,864	34,525
Nominal Repayment Amount [member]
Disclosure of financial liabilities [line items]
Bonds	21,775	22,417
Loans and other financial liabilities	7,570	8,093
Total	29,345	30,510
Total current financial liabilities	982	596
Total	30,327	31,106
Fixed interest rate [member] | Nominal Repayment Amount [member]
Disclosure of financial liabilities [line items]
Bonds	17,237	17,978
Loans and other financial liabilities	3,689	3,588
Total	20,926	21,566
Total current financial liabilities	282	221
Total	21,208	21,787
Floating interest rate [member] | Nominal Repayment Amount [member]
Disclosure of financial liabilities [line items]
Bonds	4,538	4,439
Loans and other financial liabilities	3,881	4,505
Total	8,419	8,944
Total current financial liabilities	700	375
Total	€ 9,119	€ 9,319

XML

Financial Risk Management - Summary of Total Financial Liabilities at Nominal Repayment Amount (Parenthetical) (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure of financial liabilities [line items]
Current financial liabilities	€ 12,388	€ 12,339
Variable rate [member]
Disclosure of financial liabilities [line items]
Current financial liabilities	€ 38	€ 83

XML

Financial Risk Management - Summary of Total Financial Assets (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure of financial assets [line items]
Cash and cash equivalents	€ 3,575	€ 3,964	€ 3,559	€ 4,812
Other receivables	645	784
Total non-current and current financial assets	6,773	8,570
Adjusted carrying amount	€ 4,979	€ 5,798
Effective interest rate	1.57%	3.91%
Cash and cash equivalents [member]
Disclosure of financial assets [line items]
Cash and cash equivalents	€ 2,592	€ 2,930
Adjusted carrying amount	€ 2,930	€ 2,592
Effective interest rate	0.05%	0.05%
Securities other than investments [member]
Disclosure of financial assets [line items]
Securities	€ 2,976	€ 1,723
Adjusted carrying amount	€ 1,723	€ 2,976
Effective interest rate	4.07%	7.17%
Other receivables [member]
Disclosure of financial assets [line items]
Other receivables	€ 1,698	€ 1,006
Adjusted carrying amount	€ 326	€ 230
Effective interest rate	2.03%	5.23%
Fixed interest rate [member] | Securities other than investments [member]
Disclosure of financial assets [line items]
Securities	€ 1,390	€ 623
Fixed interest rate [member] | Other receivables [member]
Disclosure of financial assets [line items]
Other receivables	1,531	927
Floating interest rate [member] | Cash and cash equivalents [member]
Disclosure of financial assets [line items]
Cash and cash equivalents	2,592	2,930
Floating interest rate [member] | Securities other than investments [member]
Disclosure of financial assets [line items]
Securities	1,586	1,100
Floating interest rate [member] | Other receivables [member]
Disclosure of financial assets [line items]
Other receivables	167	79
Nominal Investment Amount [member]
Disclosure of financial assets [line items]
Total non-current and current financial assets	7,266	5,659
Nominal Investment Amount [member] | Fixed interest rate [member]
Disclosure of financial assets [line items]
Total non-current and current financial assets	2,921	1,550
Nominal Investment Amount [member] | Floating interest rate [member]
Disclosure of financial assets [line items]
Total non-current and current financial assets	€ 4,345	€ 4,109

XML

Financial Risk Management - Summary of Total Financial Liabilities (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure of financial liabilities [line items]
Adjusted carrying amount	€ 30,120	€ 31,628
Effective interest rate	4.57%	4.97%
Bonds [member]
Disclosure of financial liabilities [line items]
Adjusted carrying amount	€ 21,521	€ 22,141
Effective interest rate	4.96%	5.44%
Loans and other financial liabilities member [member]
Disclosure of financial liabilities [line items]
Adjusted carrying amount	€ 8,599	€ 9,487
Effective interest rate	3.59%	3.88%

XML

Financial Risk Management - Summary of Financial liabilities-Maturities of Contractually Expected Disbursements (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	€ 28,108	€ 30,469
Total financial liabilities, Principal	30,327
Financial liabilities, interest	10,736
Non-current financial liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Financial liabilities, interest	10,733
Current financial liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Current financial liabilities, principal	982
Financial liabilities, interest	3
Bonds [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	21,775
Financial liabilities, interest	9,733
Loans and other financial liabilities member [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	5,183
Financial liabilities, interest	(818)
Finance lease liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	2,387
Financial liabilities, interest	1,818
Later than six months and not later than one year [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	3,141
Total financial liabilities, Principal	4,123
Financial liabilities, interest	1,220
Later than six months and not later than one year [member] | Non-current financial liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Financial liabilities, interest	1,217
Later than six months and not later than one year [member] | Current financial liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Current financial liabilities, principal	982
Financial liabilities, interest	3
Later than six months and not later than one year [member] | Bonds [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	1,739
Financial liabilities, interest	1,022
Later than six months and not later than one year [member] | Loans and other financial liabilities member [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	1,264
Financial liabilities, interest	37
Later than six months and not later than one year [member] | Finance lease liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	138
Financial liabilities, interest	158
2019 [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	4,269
Total financial liabilities, Principal	4,269
Financial liabilities, interest	1,005
2019 [member] | Non-current financial liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Financial liabilities, interest	1,005
2019 [member] | Bonds [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	2,424
Financial liabilities, interest	899
2019 [member] | Loans and other financial liabilities member [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	1,731
Financial liabilities, interest	(21)
2019 [member] | Finance lease liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	114
Financial liabilities, interest	127
2020 [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	1,983
Total financial liabilities, Principal	1,983
Financial liabilities, interest	858
2020 [member] | Non-current financial liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Financial liabilities, interest	858
2020 [member] | Bonds [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	1,267
Financial liabilities, interest	764
2020 [member] | Loans and other financial liabilities member [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	603
Financial liabilities, interest	(26)
2020 [member] | Finance lease liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	113
Financial liabilities, interest	120
2021 [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	1,305
Total financial liabilities, Principal	1,305
Financial liabilities, interest	767
2021 [member] | Non-current financial liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Financial liabilities, interest	767
2021 [member] | Bonds [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	564
Financial liabilities, interest	708
2021 [member] | Loans and other financial liabilities member [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	628
Financial liabilities, interest	(53)
2021 [member] | Finance lease liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	113
Financial liabilities, interest	112
2022 [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	3,884
Total financial liabilities, Principal	3,884
Financial liabilities, interest	702
2022 [member] | Non-current financial liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Financial liabilities, interest	702
2022 [member] | Bonds [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	3,087
Financial liabilities, interest	671
2022 [member] | Loans and other financial liabilities member [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	714
Financial liabilities, interest	(74)
2022 [member] | Finance lease liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	83
Financial liabilities, interest	105
Beyond 5 years [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	14,763
Total financial liabilities, Principal	14,763
Financial liabilities, interest	6,184
Beyond 5 years [member] | Non-current financial liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Financial liabilities, interest	6,184
Beyond 5 years [member] | Bonds [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	12,694
Financial liabilities, interest	5,669
Beyond 5 years [member] | Loans and other financial liabilities member [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	243
Financial liabilities, interest	(681)
Beyond 5 years [member] | Finance lease liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	1,826
Financial liabilities, interest	€ 1,196

XML

Financial Risk Management - Summary of Derivatives on Financial Liabilities-Contractually Expected Interest Flows (Detail) € in Millions	12 Months Ended
	Dec. 31, 2017 EUR (€)
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivatives-net (receipts) disbursements	€ (10,736)
Later than six months and not later than one year [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivatives-net (receipts) disbursements	(1,220)
Total net (receipts) disbursements	(110)
Later than six months and not later than one year [member] | Hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	414
Receipts	(520)
Derivatives-net (receipts) disbursements	(106)
Later than six months and not later than one year [member] | Non- hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	58
Receipts	(62)
Derivatives-net (receipts) disbursements	(4)
2019 [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivatives-net (receipts) disbursements	(1,005)
Total net (receipts) disbursements	(131)
2019 [member] | Hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	342
Receipts	(473)
Derivatives-net (receipts) disbursements	(131)
2019 [member] | Non- hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	38
Receipts	(38)
2020 [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivatives-net (receipts) disbursements	(858)
Total net (receipts) disbursements	(100)
2020 [member] | Hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	296
Receipts	(400)
Derivatives-net (receipts) disbursements	(104)
2020 [member] | Non- hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	23
Receipts	(19)
Derivatives-net (receipts) disbursements	4
2021 [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivatives-net (receipts) disbursements	(767)
Total net (receipts) disbursements	(104)
2021 [member] | Hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	295
Receipts	(400)
Derivatives-net (receipts) disbursements	(105)
2021 [member] | Non- hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	12
Receipts	(11)
Derivatives-net (receipts) disbursements	1
2022 [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivatives-net (receipts) disbursements	(702)
Total net (receipts) disbursements	(102)
2022 [member] | Hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	295
Receipts	(399)
Derivatives-net (receipts) disbursements	(104)
2022 [member] | Non- hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	12
Receipts	(10)
Derivatives-net (receipts) disbursements	2
Beyond 5 years [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivatives-net (receipts) disbursements	(6,184)
Total net (receipts) disbursements	(837)
Beyond 5 years [member] | Hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	2,613
Receipts	(3,451)
Derivatives-net (receipts) disbursements	(838)
Beyond 5 years [member] | Non- hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	16
Receipts	(15)
Derivatives-net (receipts) disbursements	€ 1

XML

Derivatives - Schedule of Derivative Financial Instrument By Type (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Derivative Financial Instruments [line items]
Notional amount	€ 11,647	€ 12,621
Spot Mark-to-Market (Clean Price)	(308)	690
Fair value hedges [member]
Derivative Financial Instruments [line items]
Notional amount	4,334	4,185
Spot Mark-to-Market (Clean Price)	2	88
Fair value hedges [member] | Interest rate risk [member]
Derivative Financial Instruments [line items]
Notional amount	4,334	3,334
Spot Mark-to-Market (Clean Price)	2	42
Fair value hedges [member] | Interest rate risk and currency exchange rate risk [member]
Derivative Financial Instruments [line items]
Notional amount		851
Spot Mark-to-Market (Clean Price)		46
Cash flow hedges [member]
Derivative Financial Instruments [line items]
Notional amount	7,100	7,952
Spot Mark-to-Market (Clean Price)	(325)	551
Cash flow hedges [member] | Interest rate risk and currency exchange rate risk [member]
Derivative Financial Instruments [line items]
Notional amount	7,100	7,952
Spot Mark-to-Market (Clean Price)	(325)	551
Non Hedge Accounting Derivatives [member]
Derivative Financial Instruments [line items]
Notional amount	213	484
Spot Mark-to-Market (Clean Price)	€ 15	€ 51

XML

Derivatives - Additional Information (Detail) € in Millions	12 Months Ended
	Dec. 31, 2017 EUR (€)
Derivative financial instruments [Abstract]
Unrealized losses recognized in equity	€ 28
Exchange rate adjustments	985
Ineffective portion recognized in income statement from designated cash flow hedge	€ (23)

XML

Derivatives - Schedule of Transactions hedged by Cash Flow Hedges (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Derivative Financial Instruments [line items]
Notional amount in currency of denomination	€ 11,647	€ 12,621
GBP [member] | Derivative Instrument at 6.375% [member]
Derivative Financial Instruments [line items]
Notional amount in currency of denomination	€ 850
Start of period	Jan-18
End of period	Jun-19
Rate applied	6.375%
Interest period	Annually
GBP [member] | Derivative Instrument at 5.875% [member]
Derivative Financial Instruments [line items]
Notional amount in currency of denomination	€ 375
Start of period	Jan-18
End of period	May-23
Rate applied	5.875%
Interest period	Annually
USD [member] | Derivative Instrument at 6.375% [member]
Derivative Financial Instruments [line items]
Notional amount in currency of denomination	€ 1,000
Start of period	Jan-18
End of period	Nov-33
Rate applied	6.375%
Interest period	Semiannually
USD [member] | Derivative Instrument at 5.45% [member]
Derivative Financial Instruments [line items]
Notional amount in currency of denomination	€ 186
Start of period	Jan-18
End of period	Oct-29
Rate applied	5.45%
Interest period	Semiannually
USD [member] | Derivative Instrument at 7.20% [member]
Derivative Financial Instruments [line items]
Notional amount in currency of denomination	€ 1,000
Start of period	Jan-18
End of period	July-36
Rate applied	7.20%
Interest period	Semiannually
USD [member] | Derivative Instrument at6.999% [member]
Derivative Financial Instruments [line items]
Notional amount in currency of denomination	€ 677
Start of period	Jan-18
End of period	Jun-18
Rate applied	6.999%
Interest period	Semiannually
USD [member] | Derivative Instrument at 7.175% [member]
Derivative Financial Instruments [line items]
Notional amount in currency of denomination	€ 1,000
Start of period	Jan-18
End of period	Jun-38
Rate applied	7.721%
Interest period	Semiannually
USD [member] | Derivative Instrument at 6% [member]
Derivative Financial Instruments [line items]
Notional amount in currency of denomination	€ 760
Start of period	Jan-18
End of period	Jun-19
Rate applied	7.175%
Interest period	Semiannually
USD [member] | Derivative Instrument at 5.303% [member]
Derivative Financial Instruments [line items]
Notional amount in currency of denomination	€ 1,000
Start of period	Jan-18
End of period	Sept-34
Rate applied	6.00%
Interest period	Semiannually
USD [member] | Derivative Instrument at 0.75% [member]
Derivative Financial Instruments [line items]
Notional amount in currency of denomination	€ 1,500
Start of period	Jan-18
End of period	May-24
Rate applied	5.303%
Interest period	Semiannually
USD [member] | Derivative Instrument at 1.00% [member]
Derivative Financial Instruments [line items]
Notional amount in currency of denomination	€ 186
Start of period	Jan-18
End of period	Oct-29
Rate applied	0.75%
Interest period	Semiannually

XML

Supplementary Disclosures on Financial Instruments - Carrying Amount and Fair Value Hierarchy for Each Category/Class of Financial Asset/Liability (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current liabilities
Hedging derivatives	€ 30,327
Current liabilities
Non-current liabilities	2,249	€ 2,444
Current liabilities	181	192
Total	32,864	34,525
Assets
Loans and receivables		8,631
Non-current assets
Receivables from employees	47	48
Other financial receivables	150	12
Non-current assets	800
Current assets
Receivables from employees	16	15
Other short-term financial receivables	1	2
Current assets	993	1,379
Cash and cash equivalents	3,575	3,964	€ 3,559	€ 4,812
Current assets
Non-current assets	69	101
Current assets	45	59
Total	6,773	8,570
Level 1 [member]
Current assets
Total	996	1,522
Level 2 [member]
Current liabilities
Total	1,994	1,969
Current assets
Total	1,797	2,766
Financial assets at fair value through equity category [member]
Current assets
Available-for-sale financial assets	28	27
Current assets
Total	2,729	3,977
Financial assets at fair value through profit or loss, category [member]
Current assets
Available-for-sale financial assets	1,016	1,399
Financial assets at fair value through profit or loss held for trading	22	207
Current assets
Total	64	311
Non- hedging derivatives [member]
Non-current liabilities
Non-hedging derivatives	5	13
Current liabilities
Non-hedging derivatives	4	11
Non- hedging derivatives [member] | Level 2 [member]
Non-current liabilities
Non-hedging derivatives	5	13
Current liabilities
Non-hedging derivatives	4	11
Non-current assets
Non-hedging derivatives	7	39
Current assets
Held for trading	15	28
Non- hedging derivatives [member] | Financial assets at fair value through profit or loss, category [member]
Non-current assets
Non-hedging derivatives	7	39
Current assets
Held for trading	15	28
Hedging derivatives [member]
Non-current liabilities
Hedging derivatives	1,914	1,876
Current liabilities
Hedging derivatives	71	69
Hedging derivatives [member] | Level 2 [member]
Non-current liabilities
Hedging derivatives	1,914	1,876
Current liabilities
Hedging derivatives	71	69
Non-current assets
Hedging derivatives	1,495	2,497
Current assets
Hedging derivatives	260	185
Hedging derivatives [member] | Financial assets at fair value through equity category [member]
Current assets
Hedging derivatives	1,713	2,578
Non-current assets
Hedging derivatives	1,474	2,454
Current assets
Hedging derivatives	239	124
Hedging derivatives [member] | Financial assets at fair value through profit or loss, category [member]
Current assets
Hedging derivatives	42	104
Non-current assets
Hedging derivatives	21	43
Current assets
Hedging derivatives	21	61
Fair value [member]
Current liabilities
Financial liabilities at fair value through profit or loss held for trading	9	24
Current liabilities
Finance lease liabilities	3,604	3,921
Total	41,621	41,407
Assets
Loans and receivables	7,914
Current assets
Available-for-sale financial assets	1,044	1,426
Financial assets at fair value through profit or loss held for trading	22	207
Current assets
Financial receivables for lease contracts	114	160
Total	10,849	13,106
Financial liabilities at amortized cost	36,023	35,517
Fair value [member] | Hedging derivatives [member]
Current liabilities
Hedging derivatives	1,985	1,945
Current assets
Hedging derivatives	1,755	2,682
IAS 17 section finance lease receivables [member]
Current liabilities
Finance lease liabilities	2,430	2,636
Non-current liabilities	2,249	2,444
Current liabilities	181	192
Total	2,430	2,636
Current assets
Financial receivables for lease contracts	114	160
Non-current assets	69	101
Current assets	45	59
Total	114	160
Financial liabilities at amortised cost, category [member]
Non-current liabilities
Financial payables	23,940	26,136
Current liabilities
Financial payables	4,500	3,784
Trade and miscellaneous payables and other current liabilities	4,915	5,339
Current liabilities
Total	33,355	35,259
Current assets
Financial liabilities at amortized cost	33,355	35,259
Financial liabilities at fair value through equity category [member]
Current liabilities
Total	1,966	1,943
Financial liabilities at fair value through equity category [member] | Hedging derivatives [member]
Current liabilities
Hedging derivatives	1,966	1,943
Non-current liabilities
Hedging derivatives	1,895	1,874
Current liabilities
Hedging derivatives	71	69
Financial liabilities at fair value through profit or loss, category [member]
Current liabilities
Financial liabilities at fair value through profit or loss held for trading	9	24
Current liabilities
Total	28	26
Financial liabilities at fair value through profit or loss, category [member] | Non- hedging derivatives [member]
Non-current liabilities
Non-hedging derivatives	5	13
Current liabilities
Non-hedging derivatives	4	11
Financial liabilities at fair value through profit or loss, category [member] | Hedging derivatives [member]
Current liabilities
Hedging derivatives	19	2
Non-current liabilities
Hedging derivatives	19	2
Financial assets at amortized cost, category [member]
Assets
Loans and receivables	7,913	8,629
Non-current assets
Receivables from employees	47	48
Other financial receivables	150	12
Miscellaneous receivables	370	397
Current assets
Receivables from employees	16	15
Other short-term financial receivables	101	102
Cash and cash equivalents	3,575	3,964
Trade receivables	3,500	3,925
Other receivables	154	166
Financial asset cost [member]
Assets
Loans and receivables	1	2
Non-current assets
Miscellaneous receivables	1	2
Current assets
Total	29	29
Financial assets at amortized cost, class [member]
Current assets
Total	7,913	8,629
Other Investments1 [member] | Level 1 [member]
Non-current assets
Non-current assets	3	2
Other Investments1 [member] | Level 2 [member]
Non-current assets
Non-current assets	20	17
Other Investments1 [member] | Financial assets at fair value through equity category [member]
Non-current assets
Non-current assets	28	27
Other Investments1 [member] | Financial assets at fair value through profit or loss, category [member]
Non-current assets
Non-current assets	23	19
Securities other than investments [member] | Level 1 [member]
Non-current assets
Non-current assets		1
Current assets
Current assets	993	1,379
Current assets
Held for trading		140
Securities other than investments [member] | Financial assets at fair value through profit or loss, category [member]
Non-current assets
Non-current assets		1
Current assets
Current assets	993	1,379
Current assets
Held for trading		140
Gross carrying amount [member]
Non-current liabilities
Financial payables	23,940	26,136
Current liabilities
Financial payables	4,500	3,784
Trade and miscellaneous payables and other current liabilities	4,915	5,339
Financial liabilities at fair value through profit or loss held for trading	9	24
Current liabilities
Finance lease liabilities	2,430	2,636
Non-current liabilities	2,249	2,444
Current liabilities	181	192
Total	37,779	39,864
Assets
Loans and receivables	7,914	8,631
Non-current assets
Receivables from employees	47	48
Other financial receivables	150	12
Miscellaneous receivables	371	399
Current assets
Receivables from employees	16	15
Available-for-sale financial assets	1,044	1,426
Other short-term financial receivables	101	102
Cash and cash equivalents	3,575	3,964
Financial assets at fair value through profit or loss held for trading	22	207
Trade receivables	3,500	3,925
Other receivables	154	166
Current assets
Financial receivables for lease contracts	114	160
Non-current assets	69	101
Current assets	45	59
Total	10,849	13,106
Financial liabilities at amortized cost	33,355	35,259
Gross carrying amount [member] | Non- hedging derivatives [member]
Non-current liabilities
Non-hedging derivatives	5	13
Current liabilities
Non-hedging derivatives	4	11
Non-current assets
Non-hedging derivatives	7	39
Current assets
Held for trading	15	28
Gross carrying amount [member] | Hedging derivatives [member]
Current liabilities
Hedging derivatives	1,985	1,945
Non-current liabilities
Hedging derivatives	1,914	1,876
Current liabilities
Hedging derivatives	71	69
Current assets
Hedging derivatives	1,755	2,682
Non-current assets
Hedging derivatives	1,495	2,497
Current assets
Hedging derivatives	260	185
Gross carrying amount [member] | Other Investments1 [member]
Non-current assets
Non-current assets	51	46
Gross carrying amount [member] | Securities other than investments [member]
Non-current assets
Non-current assets		1
Current assets
Current assets	€ 993	1,379
Current assets
Held for trading		€ 140

XML

Supplementary Disclosures on Financial Instruments - Summary of Gains and Losses by IAS 39 Category (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of detailed information about financial instruments [line items]
Loans and receivables	€ (356)	€ (258)
Available-for-sale financial assets	8	12
Financial Assets/Liabilities Held for Trading	(19)	456
Financial liabilities at amortized cost	(1,338)	(1,454)
Total	(1,705)	(1,244)
Interest [member]
Disclosure of detailed information about financial instruments [line items]
Loans and receivables	118	139
Financial liabilities at amortized cost	1,376	1,481
Total	€ 1,494	€ 1,620

XML

Supplementary Disclosures on Financial Instruments - Summary of Gains and Losses by IAS 39 Category (Parenthetical) (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of detailed information about financial instruments [abstract]
Fees and expenses not included in the effective interest rate	€ 2	€ 2

XML

Employee Benefits - Additional Information (Detail) € in Millions	12 Months Ended
	Dec. 31, 2017 EUR (€) Years	Dec. 31, 2016 EUR (€)	Dec. 31, 2015 EUR (€)
Disclosure of defined benefit plans [line items]
Increase in employee benefits	€ 448
Decrease in provision for employee severance indemnities	51
Net actuarial gains (losses) recognized	€ 8	€ (33)	€ 16
Inflation rate	1.50%	1.50%
Provision for employee benefits	€ 1,833	€ 1,385	1,454
Weighted average duration of the obligation | Years	10.9
Provision for termination benefit incentives	€ 505
Increase in employee benefits	687	157
Decrease in employee benefits	(229)	(221)
Actuarial assumption of decrease in discount rates [member]
Disclosure of defined benefit plans [line items]
Net actuarial gains (losses) recognized	€ 8	€ (33)
Changes in discount rates	1.30%	1.31%
Provision for employee severance indemnities [member]
Disclosure of defined benefit plans [line items]
Provision for employee benefits	€ 958	€ 1,009	1,018
Increase in employee benefits		49
Decrease in employee benefits	(51)	(59)
Provision for pension plans [member]
Disclosure of defined benefit plans [line items]
Provision for employee benefits	22	28	€ 23
Increase in employee benefits	(2)	7
Decrease in employee benefits	(1)	€ (2)
Provision for termination benefit incentives [member]
Disclosure of defined benefit plans [line items]
Increase in employee benefits	689
Decrease in employee benefits	€ (177)

XML

Employee Benefits - Summary of Provisions for Employee Benefits (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of defined benefit plans [line items]
Employee benefits, beginning balance	€ 1,385	€ 1,454
Increases/ Present value	687	157
Decrease	(229)	(221)
Exchange differences and other changes	(10)	(5)
Employee benefits, ending balance	1,833	1,385
Non-current portion, beginning balance	1,355	1,420
Non-current portion, ending balance	1,736	1,355
Current portion, beginning balance	30	34
Current portion, ending balance	97	30
Provision for employee severance indemnities [member]
Disclosure of defined benefit plans [line items]
Employee benefits, beginning balance	1,009	1,018
Increases/ Present value		49
Decrease	(51)	(59)
Exchange differences and other changes		1
Employee benefits, ending balance	958	1,009
Provision for pension plans [member]
Disclosure of defined benefit plans [line items]
Employee benefits, beginning balance	28	23
Increases/ Present value	(2)	7
Decrease	(1)	(2)
Exchange differences and other changes	(3)
Employee benefits, ending balance	22	28
Provision for termination benefit incentives and Corporate restructuring expenses [member]
Disclosure of defined benefit plans [line items]
Employee benefits, beginning balance	348	413
Increases/ Present value	689	101
Decrease	(177)	(160)
Exchange differences and other changes	(7)	(6)
Employee benefits, ending balance	853	348
Other provisions for employee benefits [member]
Disclosure of defined benefit plans [line items]
Employee benefits, beginning balance	376	436
Increases/ Present value	687	108
Decrease	(178)	(162)
Exchange differences and other changes	(10)	(6)
Employee benefits, ending balance	€ 875	€ 376

XML

Employee Benefits - Summary of Increases in Present Value of Employee Benefits (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of defined benefit plans [abstract]
(Positive)/negative effect of curtailment	€ (6)
Current service cost	0	€ 0	€ 0
Finance expenses	14	16	22
Net actuarial (gains) losses for the year	€ (8)	33	(16)
Total		€ 49	€ 6

XML

Employee Benefits - Summary of Increases in Present Value of Employee Benefits (Parenthetical) (Detail) € in Millions	12 Months Ended
	Dec. 31, 2017 EUR (€) Employee	Dec. 31, 2016 Employee	Dec. 31, 2015 Employee
Disclosure of defined benefit plans [line items]
Number of employees | Employee	59,429	61,229	65,867
Employee severance indemnities expenses | €	€ 0.3
Top of range [member]
Disclosure of defined benefit plans [line items]
Number of employees	50

XML

Employee Benefits - Summary of Employee Benefits Assumptions (Detail)	12 Months Ended
	Dec. 31, 2017
Probability of resignation:
Probability of retirement	Reaching the minimum requisites established by the Obligatory General Insurance updated on the basis of Italian Law 214 of December 22, 2011
Executives [member]
Disclosure Of Emplyee Benefits Assumptions [Line Items]
Inflation rate	1.50%
Discount rate	1.30%
Employee severance indemnities annual increase rate	2.625%
Probability of death	RG 48 mortality tables published by "Ragioneria Generale dello Stato"
Probability of disability	INPS tables divided by age and sex
Probability of resignation:
Probability of receiving at the beginning of the year an advance from the provision for severance indemnities accrued equal to 70%	1.50%
Executives [member] | Equal to or less than 40 years of age [member]
Disclosure Of Emplyee Benefits Assumptions [Line Items]
Annual real wage growth	1.00%
Executives [member] | Over 40 but equal to or less than 55 years of age [member]
Disclosure Of Emplyee Benefits Assumptions [Line Items]
Annual real wage growth	0.50%
Executives [member] | Over 55 years of age [member]
Disclosure Of Emplyee Benefits Assumptions [Line Items]
Annual real wage growth	0.00%
Executives [member] | Up to 40 years of age [member]
Probability of resignation:
Probability of resignation	6.50%
Executives [member] | From 41 to 50 years of age [member]
Probability of resignation:
Probability of resignation	2.00%
Executives [member] | From 51 to 59 years of age [member]
Probability of resignation:
Probability of resignation	2.00%
Executives [member] | From 60 to 64 years of age [member]
Probability of resignation:
Probability of resignation	20.00%
Executives [member] | Over 65 years of age [member]
Probability of resignation:
Probability of resignation	0.00%
Non executives [member]
Disclosure Of Emplyee Benefits Assumptions [Line Items]
Inflation rate	1.50%
Discount rate	1.30%
Employee severance indemnities annual increase rate	2.625%
Probability of death	RG 48 mortality tables published by "Ragioneria Generale dello Stato"
Probability of disability	INPS tables divided by age and sex
Probability of resignation:
Probability of receiving at the beginning of the year an advance from the provision for severance indemnities accrued equal to 70%	1.50%
Non executives [member] | Equal to or less than 40 years of age [member]
Disclosure Of Emplyee Benefits Assumptions [Line Items]
Annual real wage growth	1.00%
Non executives [member] | Over 40 but equal to or less than 55 years of age [member]
Disclosure Of Emplyee Benefits Assumptions [Line Items]
Annual real wage growth	0.50%
Non executives [member] | Over 55 years of age [member]
Disclosure Of Emplyee Benefits Assumptions [Line Items]
Annual real wage growth	0.00%
Non executives [member] | Up to 40 years of age [member]
Probability of resignation:
Probability of resignation	1.00%
Non executives [member] | From 41 to 50 years of age [member]
Probability of resignation:
Probability of resignation	0.50%
Non executives [member] | From 51 to 59 years of age [member]
Probability of resignation:
Probability of resignation	0.50%
Non executives [member] | From 60 to 64 years of age [member]
Probability of resignation:
Probability of resignation	6.50%
Non executives [member] | Over 65 years of age [member]
Probability of resignation:
Probability of resignation	0.00%

XML

Employee Benefits - Summary of Employee Benefits Assumptions (Parenthetical) (Detail)	Dec. 31, 2017
Executives [member]
Disclosure Of Emplyee Benefits Assumptions [Line Items]
Advance from the provision for severance indemnities accrued, percentage	70.00%
Non executives [member]
Disclosure Of Emplyee Benefits Assumptions [Line Items]
Advance from the provision for severance indemnities accrued, percentage	70.00%

XML

Employee Benefits - Summary of Sensitivity Analysis for Actuarial Assumptions (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Annual discount rate	€ 8	€ (33)	€ 16
Actuarial assumption of turnover rate [member] | +0.25 p.p [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Annual discount rate	(2)
Actuarial assumption of turnover rate [member] | -0.25 p.p [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Annual discount rate	2
Actuarial assumption of expected rates of inflation [member] | +0.25 p.p [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Annual discount rate	17
Actuarial assumption of expected rates of inflation [member] | -0.25 p.p [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Annual discount rate	(17)
Actuarial assumption of discount rates [member] | +0.25 p.p [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Annual discount rate	(23)
Actuarial assumption of discount rates [member] | -0.25 p.p [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Annual discount rate	€ 24

XML

Provisions - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of other provisions [line items]
Increase (decrease) in other provisions	€ 133
Other provisions	1,117	€ 984
Provision used directly	164
Provision for restoration costs [member]
Disclosure of other provisions [line items]
Other provisions	350	326
Provision used directly	4
Provision for legal disputes [member]
Disclosure of other provisions [line items]
Other provisions	605	457
Provision used directly	107
Provision for commercial risks [member]
Disclosure of other provisions [line items]
Increase (decrease) in other provisions	(18)
Other provisions	28	46
Provision used directly	18
Provision for taxation and tax risks [member]
Disclosure of other provisions [line items]
Increase (decrease) in other provisions	(26)
Other provisions	93	119
Provision used directly	31
Provision for taxation and tax risks [member] | Tim Brasil group: [member]
Disclosure of other provisions [line items]
Increase (decrease) in other provisions	(16)
Provision for taxation and tax risks [member] | TIM S.p.A [member]
Disclosure of other provisions [line items]
Increase (decrease) in other provisions	(10)
Other provisions [member]
Disclosure of other provisions [line items]
Other provisions	9	€ 8
Provision used directly	4
Italy [member] | Provision for restoration costs [member]
Disclosure of other provisions [line items]
Other provisions	344
Italy [member] | Provision for legal disputes [member]
Disclosure of other provisions [line items]
Other provisions	518
Provision used directly	28
Italy [member] | Other provisions [member]
Disclosure of other provisions [line items]
Increase (decrease) in other provisions	7
Brazil [member] | Provision for restoration costs [member]
Disclosure of other provisions [line items]
Other provisions	6
Brazil [member] | Provision for legal disputes [member]
Disclosure of other provisions [line items]
Other provisions	87
Provision used directly	€ 79

XML

Provisions - Summary Of Other Provisions (Detail) € in Millions	12 Months Ended
	Dec. 31, 2017 EUR (€)
Disclosure of other provisions [line items]
Beginning balance	€ 984
Increase	320
Used through income statement	(4)
Used directly	(164)
Exchange differences and other changes	(19)
Ending balance	1,117
Non-current portion, ending balance	830
Non-current portion, beginning balance	825
Current portion, beginning balance	154
Current portion, ending balance	292
Provision for taxation and tax risks [member]
Disclosure of other provisions [line items]
Beginning balance	119
Increase	18
Used directly	(31)
Exchange differences and other changes	(13)
Ending balance	93
Provision for restoration costs [member]
Disclosure of other provisions [line items]
Beginning balance	326
Increase	28
Used directly	(4)
Ending balance	350
Provision for legal disputes [member]
Disclosure of other provisions [line items]
Beginning balance	457
Increase	260
Used through income statement	(1)
Used directly	(107)
Exchange differences and other changes	(4)
Ending balance	605
Provision for commercial risks [member]
Disclosure of other provisions [line items]
Beginning balance	46
Increase	6
Used directly	(18)
Exchange differences and other changes	(6)
Ending balance	28
Provision for risks and charges on investments and corporate-related transactions [member]
Disclosure of other provisions [line items]
Beginning balance	28
Used through income statement	(2)
Exchange differences and other changes	6
Ending balance	32
Other provisions [member]
Disclosure of other provisions [line items]
Beginning balance	8
Increase	8
Used through income statement	(1)
Used directly	(4)
Exchange differences and other changes	(2)
Ending balance	€ 9

XML

Miscellaneous Payables and Other Non-Current Liabilities - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure Miscellaneous Payables And Other Non Current Liabilities [Line Items]
Increase (decrease) in miscellaneous payables and other non-current liabilities		€ 71
Capital grants remaining useful life	18 years
Change in capital grants	€ 82
Deferred income	988	1,033
Brazil business unit [member]
Disclosure Miscellaneous Payables And Other Non Current Liabilities [Line Items]
Deferred income	226
Telecom Italia Sparkle Group [member]
Disclosure Miscellaneous Payables And Other Non Current Liabilities [Line Items]
Deferred income	154
TIM S.p.A [member]
Disclosure Miscellaneous Payables And Other Non Current Liabilities [Line Items]
Deferred income	265	€ 268
Ultra-Broadband-UBB and Broadband-BB projects [member]
Disclosure Miscellaneous Payables And Other Non Current Liabilities [Line Items]
Change in capital grants	€ 20

XML

Miscellaneous Payables and Other Non-Current Liabilities - Schedule of Miscellaneous Payables and Other Non-Current Liabilities (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Miscellaneous current liabilities [abstract]
Payables to social security agencies	€ 238	€ 116
Capital grants	391	371
Deferred income	988	1,033
Income tax payables	45	66
Other	16	21
Total	€ 1,678	€ 1,607

XML

Miscellaneous Payables and Other Non-Current Liabilities - Schedule of Payables to Social Security Agencies (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Non-current payables:
Non-current payables	€ 238	€ 116
Current payables	58	69
Trade payables	296	185
From 2 to 5 years [member]
Non-current payables:
Non-current payables	226	107
Beyond 5 years [member]
Non-current payables:
Non-current payables	€ 12	€ 9

XML

Trade and Miscellaneous Payables and Other Current Liabilities - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of Trade and Miscellaneous Payables and Other Current Liabilities [Line Items]
Increase (decrease) in trade and miscellaneous payables and other current liabilities		€ 126
Trade payable	€ 4,645	4,855
Tax payables	296	185
Revenue from activation of the telephone service	18,264	17,655	€ 18,258
Brazil business unit [member]
Disclosure of Trade and Miscellaneous Payables and Other Current Liabilities [Line Items]
Trade payable	1,094
Other tax payables	87
TIM S.p.A [member]
Disclosure of Trade and Miscellaneous Payables and Other Current Liabilities [Line Items]
Trade payable	3,127
Tax payables	584	€ 292
Government concession tax	20
Withholding tax payables	72
VAT payable	385
Interconnection charges	131
Revenue from activation of the telephone service	175
Revenue from traffic and charges	21
Revenue from rent and maintenance payments	51
Revenue from outsourcing contract charges	€ 4

XML

Trade and Miscellaneous Payables and Other Current Liabilities - Summary of Trade and Miscellaneous Payables and Other Current Liabilities (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Trade and Miscellaneous Payables and Other Current Liabilities [Line Items]
Payables on construction work	€ 19	€ 25
Trade payables:
Payables to suppliers	4,262	4,532
Payables to other telecommunication operators	383	323
Trade payables	4,645	4,855
Tax payables	584	292
Miscellaneous payables and other current liabilities:
Payables for employee compensation	245	319
Payables to social security agencies	202	215
Trade and miscellaneous deferred income	508	488
Advances received	69	53
Customer-related items	602	847
Payables for "TLC operating fee"	15	15
Dividends approved, but not yet paid to shareholders	19	33
Other current liabilities	223	320
Employee benefits (except for Employee severance indemnities) for the current portion expected to be settled within 1 year	97	30
Provisions for risks and charges for the current portion expected to be settled within 1 year	292	154
Miscellaneous payables and other current liabilities	2,272	2,474
Trade and miscellaneous payables and other current liabilities	7,520	7,646
IAS 39 financial instruments [member]
Trade payables:
Payables to suppliers	4,262	4,532
Payables to other telecommunication operators	383	323
Trade payables	4,645	4,855
Miscellaneous payables and other current liabilities:
Customer-related items	77	199
Dividends approved, but not yet paid to shareholders	19	33
Other current liabilities	174	252
Miscellaneous payables and other current liabilities	270	484
Trade and miscellaneous payables and other current liabilities	€ 4,915	€ 5,339

XML

Contingent Liabilities, Other Information, Commitments And Guarantees - Additional Information (Detail) R$ in Millions							1 Months Ended																12 Months Ended
	Oct. 02, 2017 EUR (€)	Apr. 26, 2017 EUR (€)	Dec. 27, 2016 EUR (€)	May 28, 2015 EUR (€)	Feb. 28, 2014 EUR (€)	Jan. 01, 2012 EUR (€)	Dec. 31, 2017 EUR (€)	Nov. 30, 2017 EUR (€)	Feb. 28, 2017 EUR (€) Appeals	Jul. 31, 2016 EUR (€)	Apr. 30, 2016 EUR (€)	Aug. 31, 2015 EUR (€)	Jul. 31, 2015 EUR (€)	Jun. 30, 2015 EUR (€)	Nov. 30, 2013 EUR (€)	Aug. 31, 2013 EUR (€)	May 31, 2013 EUR (€)	Feb. 28, 2013 EUR (€)	Feb. 29, 2012 EUR (€)	May 31, 2010 EUR (€)	Oct. 31, 2009 EUR (€)	Jun. 30, 2009 EUR (€)	Dec. 31, 2017 EUR (€)	Dec. 31, 2016 EUR (€)	Dec. 31, 2015 EUR (€)	Dec. 31, 2014	Dec. 31, 2012 EUR (€)	Dec. 31, 2017 BRL (R$)	Oct. 02, 2017 BRL (R$)	Mar. 22, 2011 BRL (R$)
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Provisions for disputes							€ 461,000,000																€ 461,000,000
Possible loss for tax and regulatory disputes | R$																													R$ 14,500
Risk consideration together | R$																												R$ 2,700
Number of other plaintiffs brought claims																				32
Number of plaintiffs filed claims for compensation																				22
Amount of compensation claimed by filled plaintiffs																				€ 60,000,000
Amount of compensation claimed by single filled plaintiff																				€ 42,000,000
Imprisonment period for defendants										1 year to 5 years of imprisonment
Amount of judgment to defendants for damages plus legal fees																		€ 270,000
Additional amount of judgment to defendants for pecuniary and non-pecuniary damages																		€ 10,000,000
Reversal of provisional judgment awarded to Company															€ 10,000,000
Cancelleation of compensation advanced by certain plaintiffs															€ 60,000,000
AGCOM fined amount																							1,160,000
Description of tax investigation							Guardia di Finanza concluded a tax investigation into TIM S.p.A., started in 2013, regarding the years 2007 to 2014.
Notice of assessment tax year																								2007 and 2011	2010
Balance of amounts paid in concession charges																							€ 113,000,000
Balance of amounts paid in concession charges for the years																							1994-1998
Adjustment of the licence fee																							€ 11,000,000
Adjustment of the licence fee for the year																							1994
Amount not received due to bad debts against turnover																							€ 9,000,000
Payment of outstanding balances of license fees																							46,000,000
Law suit filing date																										During the preliminary hearing, which started in April 2015
Name of defendant																										TIM
Number of all plaintiffs brought claims																										26
Action Taken by the defendant against pliantiff																										The trial started in November 2015, and, as the party liable for damages, the Company has reached a settlement agreement with 12 of the 18 individuals (heirs/injured persons/family members) who are civil parties to the dispute and they have, therefore, withdrawn the claim for damages against TIM.
Number of defendants										18
Number of defendants found as guilty										13
Number of defendants found as non guilty										4
Number of cases dismissed										1
Litigation settlement compensation payable for damages along with defendents										€ 1,900,000
Amount cliamed by Elinet S.p.A due to total damages																							282,000,000
Number of defendant included the company committed trial																											89
TIM to be ordered to pay an administrative fine											€ 900,000
Restitution of concession charge plus interest							€ 386,000,000																386,000,000
Claims plus legal interest and adjustment to account for any inflation effect							529,000,000																529,000,000
Contingent liabilities							500,000,000																500,000,000
Allocated risk provision							20,000,000																20,000,000
Net of back-to-back guarantees received							57,000,000																57,000,000
Guarantees provided by third parties																							4,500,000,000
Guarantees for loans received							1,580,000,000																1,580,000,000
Guarantees performance under outstanding contracts							2,920,000,000																2,920,000,000
Guarantees provided by third parties							€ 38,000,000																€ 38,000,000
Percentage of infrastructure							10.00%																10.00%					10.00%
Percentage of transmission devices							20.00%																20.00%					20.00%
Transmission devices period																							5 years
Loans repaid in advance			€ 300,000,000
Description of loan repayment period			13 months
Guarantee obligation on telecommunication services																							€ 1,737,000,000	€ 1,686,000,000	€ 1,713,000,000
Surety bond [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Guarantee obligation on telecommunication services																							469,000,000
Federal income taxes [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Tax disputes | R$																												R$ 3,700
State income taxes [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Tax disputes | R$																												R$ 7,400
Bottom of range [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Imprisonment period for defendants																		P1Y
Top of range [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Imprisonment period for defendants																		P7Y6M
Telecom Italia Latam [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Amount of judgment to defendants for non-pecuniary damages																		€ 20,000
Telecom Italia Audit And Compliance Services [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Amount of judgment to defendants for non-pecuniary damages																		€ 20,000
Tim Group [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Restitution of concession charge plus interest							€ 143,000,000																143,000,000
Bank of Tokyo-Mitsubishi UFJ [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Guarantees received							52,000,000																52,000,000
BBVA - Banco Bilbao Vizcaya Argentaria [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Guarantees received							157,000,000																157,000,000
Intesa Sanpaolo [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Guarantees received							105,000,000																105,000,000
Brazilian Development Bank [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Low rate loans granted							€ 1,064,000,000																1,064,000,000
Vodafone [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Litigation claim																			€ 93,000,000
Pending Litigation [Member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Amount cliamed by Elinet S.p.A due to total damages																							58,000,000
Carousel fraud [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Maximum applicable fine corresponding to administrative offense, remains under seizure		€ 93,000,000						€ 1,549,000
Fine percentage in crime related costs					25.00%
Fine amount unduly deducted from crime related costs					€ 280,000,000
Tax litigation settlement amount	€ 37,000,000
Percentage of sanction under dispute	40.00%
Non recognition of fiscal effects of merger and tax deductibility of write down of goodwill [member] | Tim Celular [Member] | Federal Tax Authorities Of Brazil [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Amount for tax assessment notice served | R$																														R$ 1,265
Antitrust case A four twenty eight [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Amount of judgment awarded for abuse of dominant position under administrative sanction one																	€ 88,182,000
Amount of judgment awarded for abuse of dominant position under administrative sanction two																	€ 15,612,000
Italian competition authority case I-761 [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Restricted competition fee																									€ 21,500,000
Wind (I-761) [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Legal proceeding claim sought value																							57,000,000
Vodafone (A428) [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Legal proceeding claim sought value				€ 568,500,000		€ 1,812,000,000
Vodafone (A428) [member] | Bottom of range [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Legal proceeding claim sought value																€ 876,000,000
Vodafone (A428) [member] | Top of range [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Legal proceeding claim sought value																€ 1,029,000,000
Vodafone [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Legal proceeding claim sought value														€ 4,400,000
Vodafone [member] | Bottom of range [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Legal proceeding claim sought value														30,000,000
Vodafone [member] | Top of range [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Legal proceeding claim sought value														48,900,000
Colt technology services [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Legal proceeding claim sought value												€ 27,000,000		€ 23,000,000
KPNQ West Italia S.p.A. [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Legal proceeding claim sought value																							37,000,000
Teleunit [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Legal proceeding claim sought value																					€ 362,000,000		35,400,000
Vodafone dispute-universal service [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Legal proceeding claim sought value											€ 9,000,000		€ 38,000,000
Number of appeals filed against ministry of economic development and tim | Appeals									4
Legal proceeding claim received value									€ 38,000,000
Eutelia and voiceplus [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Legal proceeding claim sought value																						€ 730,000,000
Vodafone I-761 [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Legal proceeding claim sought value																							193,000,000
Siportal [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Legal proceeding claim sought value																							€ 25,000,000				€ 48,400,000
Golden Power Provisions [member] | Bottom of range [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Sanction percentage for non-compliance with notification obligation																							1.00%
Guardia di Finanza [member]
Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]
Legal proceeding claim sought value																							€ 48,000,000

XML

Contingent Liabilities, Other Information, Commitments and Guarantees - Information on Main Guarantees for Loans (Detail) € in Millions	Dec. 31, 2017 EUR (€)
BBVA - Banco Bilbao Vizcaya Argentaria [member]
Disclosure of Guarantees [Line Items]
Amount of guarantees	€ 368
SACE [Member]
Disclosure of Guarantees [Line Items]
Amount of guarantees	368
Intesa Sanpaolo [member]
Disclosure of Guarantees [Line Items]
Amount of guarantees	220
Cassa Depositi e Prestiti [member]
Disclosure of Guarantees [Line Items]
Amount of guarantees	157
Ing [member]
Disclosure of Guarantees [Line Items]
Amount of guarantees	105
UniCredit Bank [member]
Disclosure of Guarantees [Line Items]
Amount of guarantees	105
Commerzbank [member]
Disclosure of Guarantees [Line Items]
Amount of guarantees	58
Banco Santander [member]
Disclosure of Guarantees [Line Items]
Amount of guarantees	52
Sumitomo Mitsui Banking [member]
Disclosure of Guarantees [Line Items]
Amount of guarantees	52
Bank of Tokyo-Mitsubishi UFJ [member]
Disclosure of Guarantees [Line Items]
Amount of guarantees	€ 52

XML

Revenues - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenue [abstract]
Revenue	€ 19,828	€ 19,025	€ 19,719
Increase (decrease) revenue	803	(694)
Revenues from telecommunications services	€ 1,737	€ 1,686	€ 1,713
Change in Revenues from telecommunications services		3.02%

XML

Revenues - Schedule of Revenues (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenue [abstract]
Equipment sales	€ 1,560	€ 1,378	€ 1,474
Services	18,264	17,655	18,258
Revenues on construction contracts	4	(8)	(13)
Total	€ 19,828	€ 19,025	€ 19,719

XML

Other Income - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Analysis of income and expense [abstract]
Other income	€ 523	€ 311	€ 287
Increase in other income	€ 212	€ 24

XML

Other Income - Disclosure of Other Operating Income (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Analysis of income and expense [abstract]
Late payment fees charged for telephone services	€ 59	€ 60	€ 59
Recovery of employee benefit expenses, purchases and services rendered	22	33	32
Capital and operating grants	51	36	33
Damage compensation, penalties and sundry recoveries	35	24	25
Partnership agreements	116	71
Release of provisions and other payable items, other income	240	87	138
Other income	€ 523	€ 311	€ 287

XML

Acquisition of Goods and Services - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Acquisition of Goods and Service [Abstract]
Acquisition of goods and services	€ 8,388	€ 7,793	€ 8,532
Increase (decrease) by acquisition of goods and services	€ 595	€ (739)

XML

Acquisition of Goods and Services - Detailed Information About Business Combinations (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of detailed information about acquisition of goods and services [abstract]
Acquisition of raw materials and merchandise	€ 1,863	€ 1,614	€ 1,811
Costs of services:
Revenues due to other TLC operators	1,737	1,686	1,713
Interconnection costs	28	26	24
Commissions, sales commissions and other selling expenses	1,109	937	984
Advertising and promotion expenses	277	294	414
Professional and consulting services	223	186	366
Utilities	467	484	483
Maintenance	242	289	334
Outsourcing costs for other services	513	447	455
Mailing and delivery expenses for telephone bills, directories and other materials to customers	96	100	84
Other service expenses	572	522	610
Costs of services	5,264	4,971	5,467
Lease and rental costs:
Rent and leases	739	702	699
TLC circuit lease rents and rents for use of satellite systems	298	288	343
Other lease and rental costs	224	218	212
Lease and rental costs	1,261	1,208	1,254
Total	€ 8,388	€ 7,793	€ 8,532

XML

Employee Benefits Expenses - Additional Information (Detail) € in Millions	12 Months Ended
	Dec. 31, 2017 EUR (€) Employee	Dec. 31, 2016 EUR (€) Employee	Dec. 31, 2015 EUR (€) Employee
Disclosure of Employee Benefit Expenses [Line Items]
Employee benefit expenses	€ 3,626	€ 3,106	€ 3,589
Employee benefits expenses increase (decrease)	520	(483)
Corporate restructuring expenses	€ 680	€ 156	€ 439
Average salaried workforce, including temporary work contracts | Employee	54,946	57,855	61,553
Headcount in service including temporary work contracts | Employee	59,429	61,229	65,867
Decrease in number of employees	1,800
Domestic Defined Benefit Plans [Member]
Disclosure of Employee Benefit Expenses [Line Items]
Employee benefit expenses	€ 3,266	€ 2,759	€ 3,206
Foreign Defined Benefit Plans [Member]
Disclosure of Employee Benefit Expenses [Line Items]
Employee benefit expenses	353	€ 336	€ 349
Management Restructuring Plan [member]
Disclosure of Employee Benefit Expenses [Line Items]
Corporate restructuring expenses	€ 680

XML

Employee Benefits Expenses - Details of Employee Benefit Expenses (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Employee benefits expenses
Wages and salaries	€ 2,056	€ 2,116	€ 2,296
Social security expenses	745	770	834
Other employee benefits	110	37	2
Employee benefits expenses	2,911	2,923	3,132
Costs and provisions for temp work	0	0	0
Miscellaneous expenses for personnel and other labor-related services rendered:
Charges for termination benefit incentives	28	10	11
Corporate restructuring expenses	680	156	439
Other	7	17	7
Miscellaneous expenses for personnel and other labor-related services rendered	715	183	457
Total	€ 3,626	€ 3,106	€ 3,589

XML

Employee Benefits Expenses - Details of Average Salaried Workforce Breakdown By Category (Detail) - Employee	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of Number and Average Number of Employees [Line Items]
Total average headcount of salaried workforce	54,946	57,855	61,553
Executives [member]
Disclosure of Number and Average Number of Employees [Line Items]
Total average headcount of salaried workforce	707	837	892
Middle management [member]
Disclosure of Number and Average Number of Employees [Line Items]
Total average headcount of salaried workforce	4,269	4,450	4,585
White collars [member]
Disclosure of Number and Average Number of Employees [Line Items]
Total average headcount of salaried workforce	49,967	52,563	56,065
Blue collars [member]
Disclosure of Number and Average Number of Employees [Line Items]
Total average headcount of salaried workforce	1	1	8
Employees on payroll [member]
Disclosure of Number and Average Number of Employees [Line Items]
Total average headcount of salaried workforce	54,944	57,851	61,550
Employees with temp work contracts [member]
Disclosure of Number and Average Number of Employees [Line Items]
Total average headcount of salaried workforce	2	4	3

XML

Other Operating Expenses - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of Other Operating Expense [Abstract]
Other operating expenses	€ 1,208	€ 1,083	€ 1,491
(Decrease) increase in other operating expenses	€ 125	€ (408)

XML

Other Operating Expenses - Schedule of Other Operating Expenses (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of Other Operating Expense [Abstract]
Write-downs and expenses in connection with credit management	€ 400	€ 335	€ 345
Provision charges	228	144	330
TLC operating fees and charges	356	373	342
Indirect duties and taxes	111	100	116
Penalties, settlement compensation and administrative fines	33	44	292
Association dues and fees, donations, scholarships and traineeships	15	18	18
Sundry expenses	65	69	48
Total	1,208	1,083	1,491
of which, included in the supplementary disclosure on financial instruments	€ 400	€ 335	€ 345

XML

Internally Generated Assets - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure Of Internally Generated Assets [Line Items]
Internally generated assets	€ 68,783	€ 70,446
Internally generated [member]
Disclosure Of Internally Generated Assets [Line Items]
Internally generated assets	626	639	€ 656
Increase (decrease) in internally generated assets	€ (13)	€ (17)

XML

Internally Generated Assets - Schedule of Detail Information of Internally Generated Assets (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure Of Internally Generated Assets [Line Items]
The total internally generated assets	€ 68,783	€ 70,446
Internally generated [member]
Disclosure Of Internally Generated Assets [Line Items]
The total internally generated assets	626	639	€ 656
Internally generated [member] | Intangible assets with finite useful life [member]
Disclosure Of Internally Generated Assets [Line Items]
The total internally generated assets	272	289	312
Internally generated [member] | Tangible assets [Member]
Disclosure Of Internally Generated Assets [Line Items]
The total internally generated assets	€ 354	€ 350	€ 344

XML

Depreciation and Amortization - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Depreciation and amortisation expense [abstract]
Depreciation and amortization expense	€ 4,473	€ 4,291	€ 4,135
Increase in depreciation and amortization expense	€ 182	€ 156

XML

Depreciation and Amortization - Summary of Depreciation and Amortization Expenses (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure Of Depreciation And Amortization [Line Items]
Amortization of intangible assets with a finite useful life	€ 1,793	€ 1,743	€ 1,788
Depreciation of tangible assets owned	2,500	2,390	2,230
Depreciation of tangible assets held under finance leases	180	158	117
Total	4,473	4,291	4,135
Industrial patents and intellectual property rights [member]
Disclosure Of Depreciation And Amortization [Line Items]
Amortization of intangible assets with a finite useful life	1,263	1,243	1,268
Concessions, licenses, trademarks and similar rights [Member]
Disclosure Of Depreciation And Amortization [Line Items]
Amortization of intangible assets with a finite useful life	396	393	391
Other intangible assets [member]
Disclosure Of Depreciation And Amortization [Line Items]
Amortization of intangible assets with a finite useful life	134	107	129
Buildings (civil and industrial) [member]
Disclosure Of Depreciation And Amortization [Line Items]
Depreciation of tangible assets owned	39	48	38
Depreciation of tangible assets held under finance leases	130	125	105
Plant and equipments [member]
Disclosure Of Depreciation And Amortization [Line Items]
Depreciation of tangible assets owned	2,286	2,170	2,018
Depreciation of tangible assets held under finance leases	21	17	9
Manufacturing and distribution equipment [member]
Disclosure Of Depreciation And Amortization [Line Items]
Depreciation of tangible assets owned	16	15	15
Other [member]
Disclosure Of Depreciation And Amortization [Line Items]
Depreciation of tangible assets owned	159	157	159
Depreciation of tangible assets held under finance leases	€ 29	€ 16	€ 3

XML

Gains (Losses) on Disposal of Non-Current Assets - Additional Information (Detail) € in Millions, R$ in Millions	12 Months Ended
	Dec. 31, 2017 EUR (€)	Dec. 31, 2016 EUR (€) Tranche	Dec. 31, 2016 BRL (R$) Tranche	Dec. 31, 2015 EUR (€) Tranche	Dec. 31, 2015 BRL (R$) Tranche
Disclosure of fair value measurement [Line Items]
Gains (losses) on disposals of non-current assets | €	€ 11	€ 14		€ 336
Brazil [member]
Disclosure of fair value measurement [Line Items]
Gains (losses) on disposals of non-current assets		€ 12	R$ 44	€ 328	R$ 1,211
Number of tranches | Tranche		2	2	3	3

XML

Gains (Losses) on Disposals of Non-Current Assets - Schedule of Gain Losses on disposal of Non current assets (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Gains on disposals of non-current assets:
Gains on the retirement/disposal of intangible and tangible assets	€ 15	€ 28	€ 348
Gains on the disposal of investments in subsidiaries	0	0	0
Gains on disposals of non-current assets	15	28	348
Losses on disposals of non-current assets:
Losses on the retirement/disposal of intangible and tangible assets	4	14	12
Losses on the disposals of investments in subsidiaries	0	0	0
Losses on disposals of non-current assets	4	14	12
Gains (losses) on disposals of non-current assets	€ 11	€ 14	€ 336

XML

Impairment Reversals (Losses) on Non-Current Assets - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of impairment loss recognised or reversed [line items]
Impairment losses on non-current assets	€ 37	€ 3	€ 244
Impairment loss on non-current assets		€ 3
Brazil [member]
Disclosure of impairment loss recognised or reversed [line items]
Impairment losses on non-current assets			240
Other [Member]
Disclosure of impairment loss recognised or reversed [line items]
Impairment losses on non-current assets			€ 4

XML

Impairment Reversals (Losses) on Non-current Assets - Summary of Impairment Reversals (Losses) on Non-current Assets (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Reversals of impairment losses on non-current assets:
Reversals of impairment losses on non-current assets on intangible assets	€ 0	€ 0	€ 0
Reversals of impairment losses on non-current assets on tangible assets	0	0	0
Reversals of impairment losses on non-current assets	0	0	0
Impairment losses on non-current assets:
Impairment losses on non-current assets on intangible assets	30		240
Impairment losses on non-current assets on tangible assets	7	3	4
Impairment losses on non-current assets	37	3	244
Total	€ (37)	€ (3)	€ (244)

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Other Income (Expenses) From Investments - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure Of Other Income Expenses From Investments [Line Items]
Other income (expenses) from investments	€ (18)	€ 7	€ 10
Dividends received	1	7	3
Gains losses on disposals of investments			11
TIERRA ARGENTEA S.A. [member]
Disclosure Of Other Income Expenses From Investments [Line Items]
Other income (expenses) from investments	€ (18)
Sia societa per azioni [member]
Disclosure Of Other Income Expenses From Investments [Line Items]
Gains losses on disposals of investments			€ 10
Emittenti Titoli S.p.A. [Member]
Disclosure Of Other Income Expenses From Investments [Line Items]
Dividends received		€ 7

XML

Other Income (Expenses) from Investments - Detailed Information About Other Income (Expenses) from Investments (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure Of Detailed Information About Other Income Expenses From Investments [Abstract]
Dividends from Other investments	€ 1	€ 7	€ 3
Net gains on disposals of Other investments			11
Loss and impairment losses on Other investments	(19)		(4)
Total	(18)	7	10
of which, included in the supplementary disclosure on financial instruments	€ 1	€ 7	€ 14

XML

Finance Income And Finance Expenses - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Analysis of income and expense [abstract]
Finance income	€ 1,808	€ 2,543	€ 2,760
Finance expenses	€ 3,303	€ 3,450	€ 5,281

XML

Finance Income and Finance Expenses - Summary of Finance Income (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Interest income and other finance income:
Income from financial receivables recorded in non-current assets	€ 0	€ 0	€ 0
Income from securities other than investments, recorded in non-current assets			1
Income from securities other than investments, recorded in current assets	14	16	26
Income other than the above:
Interest income	129	151	214
Exchange gains	782	713	976
Income from fair value hedge derivatives	66	65	99
Reversal of the Reserve for cash flow hedge derivatives to the income statement (interest rate component)	568	649	954
Income from non-hedgingderivatives	9	13	15
Miscellaneous finance income	26	37	110
Interest income and other finance income	1,594	1,644	2,395
Positive fair value adjustments to:
Fair value hedge derivatives		50	129
Underlying financial assets and liabilities of fair value hedges derivatives	95	173	10
Non hedging derivatives	119	676	226
Financial income on fair value adjustments	214	899	365
Reversal of impairment loss on financial assets other than investments	0	0	0
Total	1,808	2,543	2,760
of which, included in the supplementary disclosure on financial instruments	€ 300	€ 987	€ 630

XML

Finance Income and Finance Expenses - Summary of Finance Expenses (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Interest expenses and other finance expenses:
Interest expenses and other costs relating to bonds	€ 1,100	€ 1,162	€ 1,621
Interest expenses to banks	113	117	128
Interest expenses to others	250	246	264
Interest expenses	1,463	1,525	2,013
Commissions	91	95	140
Exchange losses	759	467	1,158
Charges from fair value hedge derivatives		1	12
Reversal of the Reserve for cash flow hedge derivatives to the income statement (interest rate component)	489	548	820
Charges from non-hedgingderivatives	22	64	75
Miscellaneous finance expenses	256	221	360
Interest expenses and other finance expenses	3,080	2,921	4,578
Negative fair value adjustments to:
Fair value hedge derivatives	87	178	33
Underlying financial assets and liabilities of fair value hedges derivatives		45	117
Non hedging derivatives	136	306	553
Negative fair value adjustments to	223	529	703
Impairment losses on financial assets other than investments	0	0	0
Total	3,303	3,450	5,281
of which, included in the supplementary disclosure on financial instruments	€ 1,606	€ 1,903	€ 2,788

XML

Finance Income and Finance Expenses - Summary of Net Effects relating to Derivative Financial Instruments (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
NET EXCHANGE GAINS AND LOSSES
Exchange gains	€ 782	€ 713	€ 976
Exchange losses	(759)	(467)	(1,158)
Net exchange gain (losses)	23	246	(182)
NET RESULT FROM DERIVATIVES
Income from fair value hedge derivatives	66	65	99
Charges from fair value hedge derivatives		(1)	(12)
Net result from fair value hedge derivatives	66	64	87
Positive effect of the Reversal of the Reserve of cash flow hedge derivatives to the income statement for the interest rate component	568	649	954
Negative effect of the Reversal of the Reserve of cash flow hedge derivatives to the income statement for the interest rate component	(489)	(548)	(820)
Net effect of the Reversal of the Reserve of cash flow hedge derivatives to the income statement for the interest rate component	79	101	134
Income from non-hedgingderivatives	9	13	15
Charges from non-hedgingderivatives	(22)	(64)	(75)
Net result from non-hedging derivatives	(13)	(51)	(60)
Net result from derivatives	132	114	161
Positive fair value adjustment to fair value hedge derivatives		50	129
Negative fair value adjustment to underlying financial assets and liabilities of fair value hedge derivatives		(45)	(117)
Net fair value adjustments		5	12
Positive fair value adjustments to underlying financial assets and liabilities of fair value hedge derivatives	95	173	10
Negative fair value adjustments to fair value hedge derivatives	(87)	(178)	(33)
Net fair value adjustments	8	(5)	(23)
Net fair value adjustment to fair value hedge derivatives and underlying	8		(11)
NET FAIR VALUE ADJUSTMENTS TO NON-HEDGING DERIVATIVES
Positive fair value adjustments to non-hedging derivatives	119	676	226
Negative fair value adjustments to non-hedging derivatives	(136)	(306)	(553)
Net fair value adjustments to non-hedging derivatives	€ (17)	€ 370	€ (327)

XML

Profit (Loss) for the Year - Summary of Profits (Losses) for the year (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure Of Profit Or Loss [Abstract]
Profit (loss) for the year	€ 1,287	€ 1,966	€ 661
Owners of the Parent
Profit (loss) from continuing operations	1,121	1,811	(159)
Profit (loss) from Discontinued operations/Non-current assets held for sale		(3)	89
Profit (loss) for the year attributable to owners of the Parent	1,121	1,808	(70)
Non-controllinginterests
Profit (loss) from continuing operations	166	108	209
Profit (loss) from Discontinued operations/Non-current assets held for sale		50	522
Profit (loss) for the year attributable to Non-Controlling interests	€ 166	€ 158	€ 731

XML

Earnings Per Share - Schedule of Basic Earnings Per Share (Detail) - EUR (€) € / shares in Units, € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Basic earnings per share [abstract]
Average number of Ordinary and Savings Shares	21,067,000,000	21,067,000,000	20,916,000,000
Basic earnings per share- Ordinary Shares	€ 0.05	€ 0.08
Plus: additional dividends per savings Share	0.01	0.01
Basic earnings per share- Savings Shares	€ 0.06	€ 0.09
Basic Earnings Per Share From continuing Operations
Profit (loss) from continuing operations attributable to owners of the Parent	€ 1,121	€ 1,811	€ (159)
Less: additional dividends for the Savings Shares	(66)	(66)
Earnings From Continuing Operations For Per Share Calculation Basic, Total	€ 1,055	€ 1,745	€ (159)
Average number of Ordinary and Savings Shares	21,067,000,000	21,067,000,000	20,916,000,000
Basic earnings (loss) per share from continuing operations- Ordinary Shares	€ 0.05	€ 0.08	€ (0.01)
Plus: additional dividends per savings Share	0.01	0.01
Basic earnings (loss) per share from continuing operations- Savings Shares	€ 0.06	€ 0.09	€ (0.01)
Basic Earnings Per Share From Discontinued operations/Non-current assets held for sale
Profit (loss) from Discontinued operations/Non-current assets held for sale		€ 47	€ 611
Average number of Ordinary and Savings Shares	21,067,000,000	21,067,000,000	20,916,000,000
Basic earnings (loss) per share from Discontinued operations/ Non-current assets held for sale-Ordinary Shares			€ 0.03
Basic earnings (loss) per share from Discontinued operations/ Non-current assets held for sale-Savings Shares			€ 0.03
Average number of Ordinary Shares	15,039,368,195	15,039,128,128	14,889,773,009
Average number of Savings Shares	6,027,791,699	6,027,791,699	6,026,677,674
Total	21,067,159,894	21,066,919,827	20,916,450,683
Profit (loss) for the year attributable to Owners of the Parent	€ 1,121	€ 1,808	€ (70)
Less: additional dividends for the savings shares (0.011 per share and up to capacity)	(66)	(66)
Profit Loss For Calculating Earnings Per Share, Total	€ 1,055	€ 1,742	€ (70)

XML

Earnings Per Share - Schedule of Basic Earnings Per Share (Parenthetical) (Detail) - € / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Basic earnings per share [abstract]
Additional dividends for the savings shares per share basic	€ 0.011	€ 0.011	€ 0.011

XML

Earnings Per Share - Schedule of Diluted Earnings Per Share (Detail) - EUR (€) € / shares in Units, € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Diluted earnings per share [abstract]
Profit (loss) for the year attributable to Owners of the Parent	€ 1,121	€ 1,808	€ (70)
Dilution effect of stock option plans and convertible bonds	32	43
Less: additional dividends for the savings shares (0.011 per share and up to capacity)	(66)	(66)
Profit loss for calculating diluted earnings per share	1,087	1,785	(70)
Average number of Ordinary and Savings Shares	€ 22,167	€ 22,194	20,916
Diluted earnings per share-Ordinary Shares	€ 0.05	€ 0.08
Plus: additional dividends per savings Share	0.01	0.01
Diluted earnings per share-Savings Shares	€ 0.06	€ 0.09
Diluted Earnings Per Share From continuing Operations
Profit (loss) from continuing operations attributable to owners of the Parent	€ 1,121	€ 1,811	(159)
Dilution effect of stock option plans and convertible bonds	32	43
Less: additional dividends for the Savings Shares	(66)	(66)
Diluted earnings per share from continuing operations	1,087	1,788	(159)
Average number of Ordinary and Savings Shares	€ 22,167	€ 22,194	€ 20,916
Diluted earnings (loss) per share from continuing operations-Ordinary Shares	€ 0.05	€ 0.08	€ (0.01)
Plus: additional dividends per savings Share	0.01	0.01
Diluted earnings (loss) per share from continuing operations-Savings Shares	€ 0.06	€ 0.09	€ (0.01)
Diluted Earnings Per Share From Discontinued operations/Non-current assets held for sale
Profit (loss) from Discontinued operations/Non-current assets held for sale		€ 47	€ 611
Dilution effect of stock option plans and convertible bonds	€ 0	0	0
Average number of Ordinary and Savings Shares	€ 22,167	€ 22,194	€ 20,916
Diluted earnings per share from Discontinued operations/ Non-current assets held for sale-Ordinary Shares			€ 0.03
Diluted earnings per share from Discontinued operations/ Non-current assets held for sale-Savings Shares			€ 0.03
Average number of Ordinary Shares	16,139,681,521	16,166,142,282	14,889,773,009
Average number of Savings Shares	6,027,791,699	6,027,791,699	6,026,677,674
Total	22,167,473,220	22,193,933,981	20,916,450,683

XML

Earnings Per Share - Schedule of Diluted Earnings Per Share (Parenthetical) (Detail) - € / shares shares in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Diluted earnings per share [Line Items]
Additional dividends for the savings shares per share diluted	€ 0.011	€ 0.011	€ 0.011
Convertible bonds [member]
Diluted earnings per share [Line Items]
Convertible bond adjustment	32	43

XML

Earnings Per Share - Future Potential Changes in Share Capital (Detail) - EUR (€) € / shares in Units, € in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of potential changes in share capital [line items]
Share capital	€ 2,008,209
Additional paid-in capital	€ 2,094,000	€ 2,094,000
Not yet approved ordinary shares [member]
Disclosure of potential changes in share capital [line items]
Number of maximum shares issuable	13,555,651
Share capital	€ 7,455
Additional paid-in capital	€ 5,287
Subscription price per shares	€ 0.94
Ordinary share [member] | 2015 Convertible bond [member]
Disclosure of potential changes in share capital [line items]
Number of maximum shares issuable	1,082,485,386
Share capital	€ 2,000,000
Ordinary share [member] | Convertible bonds [member]
Disclosure of potential changes in share capital [line items]
Share capital	€ 2,000,000
2014 Stock option plan [member] | Not yet approved ordinary shares [member]
Disclosure of potential changes in share capital [line items]
Number of maximum shares issuable	133,042
Share capital	€ 73
Additional paid-in capital	€ 80
Subscription price per shares	€ 1.15
2015 Stock option plan [member] | Not yet approved ordinary shares [member]
Disclosure of potential changes in share capital [line items]
Number of maximum shares issuable	343,069
Share capital	€ 189
Additional paid-in capital	€ 158
Subscription price per shares	€ 1.01
2016 Stock option plan [member] | Not yet approved ordinary shares [member]
Disclosure of potential changes in share capital [line items]
Number of maximum shares issuable	893,617
Share capital	€ 492
Additional paid-in capital	€ 393
Subscription price per shares	€ 0.99
Stock option plan [member] | Not yet approved ordinary shares [member]
Disclosure of potential changes in share capital [line items]
Number of maximum shares issuable	14,925,379
Share capital	€ 8,209
Additional paid-in capital	€ 5,918

XML

Segment Reporting - Separate Consolidated Income Statements by Operating Segment (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of operating segments [line items]
Revenues by operating segment	€ 19,828	€ 19,025	€ 19,719
Other income	523	311	287
Total operating revenues and other income	20,351	19,336	20,006
Acquisition of goods and services	(8,388)	(7,793)	(8,532)
Employee benefits expenses	(3,626)	(3,106)	(3,589)
of which: accruals to employee severance indemnities	(6)	(1)	(1)
Other operating expenses	(1,208)	(1,083)	(1,491)
of which: write-downs and expenses in connection with credit management and provision charges	(628)	(479)	(675)
Change in inventories	35	9	(44)
Internally generated assets	626	639	656
Depreciation and amortization	(4,473)	(4,291)	(4,135)
Gains (losses) on disposals of non-currentassets	11	14	336
Impairment reversals (losses) on non-currentassets	(37)	(3)	(244)
Operating profit (loss)	3,291	3,722	2,963
Share of profits (losses) of associates and joint ventures accounted for using the equity method	(1)	(23)	1
Other income (expenses) from investments	(18)	7	10
Finance income	1,808	2,543	2,760
Finance expenses	(3,303)	(3,450)	(5,281)
Profit (loss) before tax from continuing operations	1,777	2,799	453
Income tax expense	(490)	(880)	(403)
Profit (loss) from continuing operations	1,287	1,919	50
Profit (loss) from Discontinued operations/Non-currentassets held for sale		47	611
Profit (loss) for the year	1,287	1,966	661
Attributable to:
Owners of the Parent	1,121	1,808	(70)
Non-controlling interests	166	158	731
Third-party [member]
Disclosure of operating segments [line items]
Revenues by operating segment	19,828	19,025	19,719
Operating segments [member] | Domestic [member]
Disclosure of operating segments [line items]
Revenues by operating segment	15,354	15,006	15,001
Other income	471	259	258
Total operating revenues and other income	15,825	15,265	15,259
Acquisition of goods and services	(6,235)	(5,785)	(6,046)
Employee benefits expenses	(3,266)	(2,759)	(3,206)
of which: accruals to employee severance indemnities	(6)	(1)	(1)
Other operating expenses	(704)	(574)	(999)
of which: write-downs and expenses in connection with credit management and provision charges	(468)	(317)	(506)
Change in inventories	41	16	3
Internally generated assets	510	535	556
Depreciation and amortization	(3,360)	(3,310)	(3,205)
Gains (losses) on disposals of non-currentassets	(2)	(9)
Impairment reversals (losses) on non-currentassets	(37)	(3)	(3)
Operating profit (loss)	2,772	3,376	2,359
Share of profits (losses) of associates and joint ventures accounted for using the equity method	(1)	(23)	1
Operating segments [member] | Brazil [member]
Disclosure of operating segments [line items]
Revenues by operating segment	4,502	4,047	4,637
Other income	52	51	21
Total operating revenues and other income	4,554	4,098	4,658
Acquisition of goods and services	(2,168)	(2,028)	(2,443)
Employee benefits expenses	(353)	(336)	(349)
Other operating expenses	(500)	(505)	(470)
of which: write-downs and expenses in connection with credit management and provision charges	(160)	(162)	(149)
Change in inventories	(6)	1	(33)
Internally generated assets	108	95	88
Depreciation and amortization	(1,114)	(980)	(909)
Gains (losses) on disposals of non-currentassets	14	23	336
Impairment reversals (losses) on non-currentassets			(240)
Operating profit (loss)	535	368	638
Operating segments [member] | Media [member]
Disclosure of operating segments [line items]
Revenues by operating segment			82
Other income			4
Total operating revenues and other income			86
Acquisition of goods and services			(33)
Employee benefits expenses			(4)
Other operating expenses			(12)
of which: write-downs and expenses in connection with credit management and provision charges			(12)
Depreciation and amortization			(23)
Operating profit (loss)			14
Operating segments [member] | Other operations [member]
Disclosure of operating segments [line items]
Revenues by operating segment		11	49
Other income		1	4
Total operating revenues and other income		12	53
Acquisition of goods and services	(4)	(9)	(48)
Employee benefits expenses	(7)	(11)	(30)
Other operating expenses	(5)	(2)	(11)
of which: write-downs and expenses in connection with credit management and provision charges			(8)
Change in inventories		(8)	(15)
Impairment reversals (losses) on non-currentassets			(1)
Operating profit (loss)	(16)	(18)	(52)
Operating segments [member] | Third-party [member] | Domestic [member]
Disclosure of operating segments [line items]
Revenues by operating segment	15,328	14,971	14,960
Operating segments [member] | Third-party [member] | Brazil [member]
Disclosure of operating segments [line items]
Revenues by operating segment	4,500	4,044	4,634
Operating segments [member] | Third-party [member] | Media [member]
Disclosure of operating segments [line items]
Revenues by operating segment			82
Operating segments [member] | Third-party [member] | Other operations [member]
Disclosure of operating segments [line items]
Revenues by operating segment		10	43
Operating segments [member] | Intragroup [member] | Domestic [member]
Disclosure of operating segments [line items]
Revenues by operating segment	26	35	41
Operating segments [member] | Intragroup [member] | Brazil [member]
Disclosure of operating segments [line items]
Revenues by operating segment	2	3	3
Operating segments [member] | Intragroup [member] | Other operations [member]
Disclosure of operating segments [line items]
Revenues by operating segment		1	6
Adjustments and eliminations [member]
Disclosure of operating segments [line items]
Revenues by operating segment	(28)	(39)	(50)
Total operating revenues and other income	(28)	(39)	(50)
Acquisition of goods and services	19	29	38
Other operating expenses	1	(2)	1
Change in inventories			1
Internally generated assets	8	9	12
Depreciation and amortization	1	(1)	2
Gains (losses) on disposals of non-currentassets	(1)
Operating profit (loss)		(4)	4
Adjustments and eliminations [member] | Intragroup [member]
Disclosure of operating segments [line items]
Revenues by operating segment	€ (28)	€ (39)	€ (50)

XML

Segment Reporting - Revenues by Operating Segment (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of operating segments [line items]
Total revenues from equipment sales	€ 1,560	€ 1,378	€ 1,474
Total revenues from services	18,264	17,655	18,258
Total revenues on construction contracts	4	(8)	(13)
Total revenues by operating segment	19,828	19,025	19,719
Third-party [member]
Disclosure of operating segments [line items]
Total revenues from equipment sales	1,560	1,378	1,474
Total revenues from services	18,264	17,655	18,258
Total revenues on construction contracts	4	(8)	(13)
Total revenues by operating segment	19,828	19,025	19,719
Operating segments [member] | Domestic [member]
Disclosure of operating segments [line items]
Total revenues from equipment sales	1,350	1,136	956
Total revenues from services	14,000	13,878	14,058
Total revenues on construction contracts	4	(8)	(13)
Total revenues by operating segment	15,354	15,006	15,001
Operating segments [member] | Brazil [member]
Disclosure of operating segments [line items]
Total revenues from equipment sales	211	232	475
Total revenues from services	4,291	3,815	4,162
Total revenues by operating segment	4,502	4,047	4,637
Operating segments [member] | Media [member]
Disclosure of operating segments [line items]
Total revenues from services			82
Total revenues by operating segment			82
Operating segments [member] | Other operations [member]
Disclosure of operating segments [line items]
Total revenues from equipment sales		11	48
Total revenues from services			1
Total revenues by operating segment		11	49
Operating segments [member] | Third-party [member] | Domestic [member]
Disclosure of operating segments [line items]
Total revenues from equipment sales	1,350	1,136	956
Total revenues from services	13,974	13,843	14,017
Total revenues on construction contracts	4	(8)	(13)
Total revenues by operating segment	15,328	14,971	14,960
Operating segments [member] | Third-party [member] | Brazil [member]
Disclosure of operating segments [line items]
Total revenues from equipment sales	210	232	475
Total revenues from services	4,290	3,812	4,159
Total revenues by operating segment	4,500	4,044	4,634
Operating segments [member] | Third-party [member] | Media [member]
Disclosure of operating segments [line items]
Total revenues from services			82
Total revenues by operating segment			82
Operating segments [member] | Third-party [member] | Other operations [member]
Disclosure of operating segments [line items]
Total revenues from equipment sales		10	43
Total revenues by operating segment		10	43
Operating segments [member] | Intragroup [member] | Domestic [member]
Disclosure of operating segments [line items]
Total revenues from services	26	35	41
Total revenues by operating segment	26	35	41
Operating segments [member] | Intragroup [member] | Brazil [member]
Disclosure of operating segments [line items]
Total revenues from equipment sales	1
Total revenues from services	1	3	3
Total revenues by operating segment	2	3	3
Operating segments [member] | Intragroup [member] | Other operations [member]
Disclosure of operating segments [line items]
Total revenues from equipment sales		1	5
Total revenues from services			1
Total revenues by operating segment		1	6
Adjustments and eliminations [member]
Disclosure of operating segments [line items]
Total revenues from equipment sales	(1)	(1)	(5)
Total revenues from services	(27)	(38)	(45)
Total revenues by operating segment	(28)	(39)	(50)
Adjustments and eliminations [member] | Intragroup [member]
Disclosure of operating segments [line items]
Total revenues from equipment sales	(1)	(1)	(5)
Total revenues from services	(27)	(38)	(45)
Total revenues by operating segment	€ (28)	€ (39)	€ (50)

XML

Segment Reporting - Purchase of Intangible and Tangible Assets by Operating Segment (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of operating segments [line items]
Purchase of intangible assets	€ 2,292	€ 1,641	€ 1,959
Purchase of tangible assets	3,477	3,467	4,761
Purchase of intangible and tangible assets	5,769	5,108	6,720
of which capital expenditures	5,701	4,876	5,197
Assets held under finance lease [member]
Disclosure of operating segments [line items]
of which change in finance leasing contracts	68	232	1,523
Operating segments [member] | Domestic [member]
Disclosure of operating segments [line items]
Purchase of intangible assets	1,763	1,113	1,454
Purchase of tangible assets	2,842	2,792	3,632
Purchase of intangible and tangible assets	4,605	3,905	5,086
of which capital expenditures	4,551	3,709	3,900
Operating segments [member] | Domestic [member] | Assets held under finance lease [member]
Disclosure of operating segments [line items]
of which change in finance leasing contracts	54	196	1,186
Operating segments [member] | Brazil [member]
Disclosure of operating segments [line items]
Purchase of intangible assets	529	528	505
Purchase of tangible assets	635	675	1,121
Purchase of intangible and tangible assets	1,164	1,203	1,626
of which capital expenditures	1,150	1,167	1,289
Operating segments [member] | Brazil [member] | Assets held under finance lease [member]
Disclosure of operating segments [line items]
of which change in finance leasing contracts	€ 14	€ 36	337
Operating segments [member] | Media [member]
Disclosure of operating segments [line items]
Purchase of tangible assets			8
Purchase of intangible and tangible assets			8
of which capital expenditures			€ 8

XML

Segment Reporting - Summary of Headcount by Operating Segment (Detail) - Employee	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of operating segments [line items]
Headcount	59,429	61,229	65,867
Domestic [member]
Disclosure of operating segments [line items]
Headcount	49,851	51,280
Brazil [member]
Disclosure of operating segments [line items]
Headcount	9,508	9,849
Other operations [member]
Disclosure of operating segments [line items]
Headcount	70	100

XML

Segment Reporting - Assets and Liabilities by Operating Segment (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure of operating segments [line items]
Non-current operating assets	€ 55,623	€ 55,145
Total assets	68,783	70,446
Equity	23,783	23,553	€ 21,249	€ 21,584
Total Equity and liabilities	68,783	70,446
Operating segments [member]
Disclosure of operating segments [line items]
Non-current operating assets	1	1
Current operating assets	(10)	(1)
Total operating assets	(9)
Discontinued operations /Non-current assets held for sale	0	0
Total operating liabilities	(26)	(16)
Liabilities directly associated with Discontinued operations/Non-current assets held for sale	0	0
Operating segments [member] | Domestic [member]
Disclosure of operating segments [line items]
Non-current operating assets	48,850	47,428
Current operating assets	4,363	4,472
Total operating assets	53,213	51,900
Investments accounted for using the equity method	17	18
Discontinued operations /Non-current assets held for sale	0	0
Total operating liabilities	9,829	8,968
Liabilities directly associated with Discontinued operations/Non-current assets held for sale	0	0
Operating segments [member] | Brazil [member]
Disclosure of operating segments [line items]
Non-current operating assets	6,769	7,711
Current operating assets	898	1,209
Total operating assets	7,667	8,920
Discontinued operations /Non-current assets held for sale	0	0
Total operating liabilities	1,855	2,397
Liabilities directly associated with Discontinued operations/Non-current assets held for sale	0	0
Operating segments [member] | Other operations [member]
Disclosure of operating segments [line items]
Non-current operating assets	3	5
Current operating assets	(2)	16
Total operating assets	1	21
Discontinued operations /Non-current assets held for sale	0	0
Total operating liabilities	58	57
Liabilities directly associated with Discontinued operations/Non-current assets held for sale	0	0
Adjustments and eliminations [member]
Disclosure of operating segments [line items]
Non-current operating assets	55,623	55,145
Current operating assets	5,249	5,696
Total operating assets	60,872	60,841
Investments accounted for using the equity method	17	18
Discontinued operations /Non-current assets held for sale	0	0
Unallocated assets	7,894	9,587
Total assets	68,783	70,446
Total operating liabilities	11,716	11,406
Liabilities directly associated with Discontinued operations/Non-current assets held for sale	0	0
Unallocated liabilities	33,284	35,487
Equity	23,783	23,553
Total Equity and liabilities	€ 68,783	€ 70,446

XML

Segment Reporting - Reporting by Geographical Area (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of operating segments [line items]
Breakdown by location	€ 19,828	€ 19,025	€ 19,719
Breakdown by location of customers	55,623	55,145
Customer with Italy [member]
Disclosure of operating segments [line items]
Breakdown by location	14,064	13,657	13,772
Outside Italy [member]
Disclosure of operating segments [line items]
Breakdown by location	5,764	5,368	5,947
Italy [member]
Disclosure of operating segments [line items]
Breakdown by location	15,015	14,635	14,743
Breakdown by location of customers	48,591	46,948
Customer outside Italy [member]
Disclosure of operating segments [line items]
Breakdown by location	4,813	4,390	€ 4,976
Breakdown by location of customers	€ 7,032	€ 8,197

XML

Segment Reporting - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017
Disclosure of operating segments [abstract]
Entity's consolidated revenues	10.00%

XML

Related Party Transactions and Direction and Coordination Activity - Summary of Separate Consolidated Income Statement (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of transactions between related parties [Line Items]
Revenue	€ 19,828.0	€ 19,025.0	€ 19,719.0
Other income	523.0	311.0	287.0
Acquisition of goods and services	8,388.0	7,793.0	8,532.0
Employee benefits expenses	3,626.0	3,106.0	3,589.0
Other operating expenses	572.0	522.0	610.0
Other operating expenses	1,208.0	1,083.0	1,491.0
Other income (expenses) from investments	(18.0)	7.0	10.0
Finance income	1,808.0	2,543.0	2,760.0
Finance expenses	3,303.0	3,450.0	5,281.0
Profit (loss) from Discontinued operations/Non-current assets held for sale		47.0	611.0
Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Revenue	3.0	10.0	6.0
Other income	(4.0)
Acquisition of goods and services	22.0	21.0	39.0
Finance expenses	€ 11.0		5.0
Type of contract	Write-down of the financial receivable due from Alfiere. Interest expenses for equipment lease and finance leases with Teleleasing S.p.A.
Income Statement [member] | Other minor companies [member]
Disclosure of transactions between related parties [Line Items]
Revenue		1.0	1.0
Other income [member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Type of contract	Contributions governed by partnership agreements and penalties with respect to the Italtel group.
Employee benefits expenses [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Generali group insurance related to the work of personnel
Other operating expenses [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Expenses for penalties and contractual breaches towards the Intesa Sanpaolo group
Other income (expenses) from investments [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Loss related to the sale of Teleleasing S.p.A. to the Mediobanca group
Generali group [member] | Revenues [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Supply of telephone and data transmission services, peripheral data networks, connections, storage and telecommunications products and services
Generali group [member] | Other income [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Generali group damage compensation
Generali group [member] | Acquisition of goods and services [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Insurance premiums and property leases
Intesa Sanpaolo group [member] | Revenues [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Telephone services, MPLS data and international network, ICT services and Microsoft licenses, Internet connectivity and high-speed connections
Intesa Sanpaolo group [member] | Acquisition of goods and services [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Factoring fees, fees for smart card top-ups/activation and commissions for payment of telephone bills by direct debit and collections via credit cards
Intesa Sanpaolo group [member] | Finance income [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Bank accounts, deposits and hedging derivatives
Intesa Sanpaolo group [member] | Finance expenses [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Term Loan Facility, Revolving Credit Facility, hedging derivatives, loans and bank accounts.
Mediobanca group [member] | Revenues [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Telephone services, sale of equipment, outsourced data network services, Internet accesses and software licenses.
Mediobanca group [member] | Acquisition of goods and services [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Credit recovery activities
Mediobanca group [member] | Finance income [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Bank accounts, deposits and hedging derivatives
Mediobanca group [member] | Finance expenses [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Term Loan Facility, Revolving Credit Facility and hedging derivatives
RCS MediaGroup group [member] | Revenues [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Fixed-line telephony service
RCS MediaGroup group [member] | Acquisition of goods and services [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Provision of content and digital publishing services and fees for telephone top-up services
Telefonica group [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Acquisition of transmission capacity with the Telefónica group
Telefonica group [member] | Revenues [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Interconnection services, roaming, broadband access fees, supply of "IRU" transmission capacity and software
Telefonica group [member] | Acquisition of goods and services [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Interconnection and roaming services, site sharing, co-billingagreements, broadband line sharing and unbundling
Telefonica group [member] | Finance income [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Finance leases
Telefonica group [member] | Finance expenses [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Loss on sale of securities held in portfolio
CartaSi group [member] | Acquisition of goods and services [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Commissions on collections and top-up services for prepaid mobile users.
Havas group [member] | Acquisition of goods and services [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Purchase of media space on behalf of the TIM Group and, to a lesser extent, study and implementation of advertising campaigns
Vivendi group [member]
Disclosure of transactions between related parties [Line Items]
Revenue		46.0
Finance income		862.1
Vivendi group [member] | Acquisition of goods and services [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Purchase of musical and television digital content (TIMmusic and TIMvision) and supply of D&P cloud-based games (TIMgames).
Other related parties [member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Revenue	€ 115.0	355.0	605.0
Acquisition of goods and services	170.0	231.0	323.0
Finance costs	38.0	114.0	92.0
Other related parties [member] | Income Statement [member] | Other minor companies [member]
Disclosure of transactions between related parties [Line Items]
Revenue	1.0
Acquisition of goods and services		1.0	1.0
Other related parties [member] | Employee benefits expenses [member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Employee benefits expenses	1.0	2.0	15.0
Other related parties [member] | Other operating expenses [Member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Other operating expenses		1.0	1.0
Other related parties [member] | Finance income [member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Other income (expenses) from investments			(4.0)
Other related parties [member] | Other minor companies [member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Other income	4.0	1.0	1.0
Other related parties [member] | Generali group [member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Revenue	12.0	47.0	109.0
Acquisition of goods and services	7.0	21.0	25.0
Other related parties [member] | Intesa Sanpaolo group [member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Revenue	31.0	64.0	68.0
Acquisition of goods and services	5.0	11.0	11.0
Finance costs	23.0	87.0	68.0
Other related parties [member] | Intesa Sanpaolo group [member] | Finance income [member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Finance income	27.0	83.0	96.0
Other related parties [member] | Mediobanca group [member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Revenue	4.0	7.0	6.0
Acquisition of goods and services	1.0	1.0	1.0
Finance costs	15.0	26.0	24.0
Other related parties [member] | Mediobanca group [member] | Finance income [member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Finance income	15.0	18.0	18.0
Other related parties [member] | RCS MediaGroup group [member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Revenue		2.0	1.0
Acquisition of goods and services		1.0
Other related parties [member] | Telefonica group [member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Revenue	67.0	235.0	421.0
Acquisition of goods and services	57.0	188.0	279.0
Finance costs		1.0
Finance income	3.0	7.0	9.0
Other related parties [member] | CartaSi group [member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Acquisition of goods and services			5.0
Other related parties [member] | Havas group [member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Acquisition of goods and services	91.0
Other related parties [member] | Vivendi group [member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Acquisition of goods and services	9.0	8.0	1.0
Related parties [member]
Disclosure of transactions between related parties [Line Items]
Revenue	118.0
Other income	8.0
Acquisition of goods and services	192.0
Employee benefits expenses	112.0
Finance income	45.0
Finance expenses	49.0
Asscom S.r.l. [Member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Revenue	€ 1.0	1.0
Type of contract	Insurance brokerage
Italtel group [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Purchases of telecommunications equipment
Italtel group [member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Revenue	€ 1.0	7.0	1.0
Acquisition of goods and services	€ 17.0	16.0	37.0
Type of contract	Provision of equipment rental, fixed and mobile telephone and outsourced communication services
NordCom S.p.A. [member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Revenue	€ 1.0	1.0	1.0
Acquisition of goods and services		1.0	1.0
Type of contract	Fixed and mobile voice services, data network connections and outsourced, I.C.T. products and services
Teleleasing S.p.A. (in liquidation) [Member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Revenue			3.0
Acquisition of goods and services			1.0
Type of contract	Sale of equipment and maintenance services
Italtel Group [Member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Type of contract	Supply and maintenance of switching equipment, software development and platforms upgrading, and customized products and services, as part of TIM offerings to the Italtel group customers, and extension of professional services for the new Multimedia Video Data Center for the provision of the TIM Vision service
NordCom S.p.A. [Member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Type of contract	Supply and development of IT solutions, provision of customized services as part of TIM offerings to end customers, and rental expense for base transceiver station housing
Teleleasing S.p.A. (in liquidation) [Member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Type of contract	Purchase of goods assigned under leasing arrangements with TIM customers
W.A.Y. S.r.l. [member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Acquisition of goods and services	€ 4.0	4.0
Type of contract	Supply and installation of geolocation equipment and provision of related technical support services within the TIM customer offering
Other minor companies [member] | Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Acquisition of goods and services	€ 1.0
Discontinued Operations [member]
Disclosure of transactions between related parties [Line Items]
Revenues, Transactions of Discontinued Operations		(23.0)	(187.0)
Acquisition of goods and services, Transactions of Discontinued Operations		€ (14.0)	(111.0)
Employee benefits expenses, Transactions of Discontinued Operations			€ (12.0)
Revenues	0.60%	1.80%	2.20%
Other income	1.50%	0.30%	0.30%
Acquisition of goods and services	2.30%	3.10%	2.90%
Employee benefits expenses	3.10%	3.90%	2.90%
Other operating expenses		0.10%
Other operating expenses, percentage			0.10%
Finance income	2.50%	4.20%	4.50%
Finance expenses	1.50%	3.30%	1.80%
Discontinued Operations [member] | Related parties [member]
Disclosure of transactions between related parties [Line Items]
Revenue		€ 342.0	€ 424.0
Other income		1.0	1.0
Acquisition of goods and services		238.0	251.0
Employee benefits expenses		121.0	103.0
Other operating expenses		1.0	1.0
Finance income		108.0	123.0
Finance expenses		114.0	97.0
Continuing operations [member]
Disclosure of transactions between related parties [Line Items]
Revenue	€ 19,828.0	19,025.0	19,719.0
Other income	523.0	311.0	287.0
Acquisition of goods and services	8,388.0	7,793.0	8,532.0
Employee benefits expenses	3,626.0	3,106.0	3,589.0
Other operating expenses		1,083.0	1,491.0
Finance income	1,808.0	2,543.0	2,760.0
Finance expenses	3,303.0	3,450.0	5,281.0
Profit (loss) from Discontinued operations/Non-current assets held for sale		47.0	611.0
Continuing operations [member] | Associates, subsidiaries of associates and joint ventures [member]
Disclosure of transactions between related parties [Line Items]
Revenue	3.0	10.0	6.0
Other income	4.0
Acquisition of goods and services	22.0	21.0	39.0
Finance expenses	11.0		5.0
Profit (loss) from Discontinued operations/Non-current assets held for sale		(1.0)	(13.0)
Continuing operations [member] | Other related parties [member]
Disclosure of transactions between related parties [Line Items]
Revenue	115.0	355.0	605.0
Other income	4.0	1.0	1.0
Acquisition of goods and services	170.0	231.0	323.0
Employee benefits expenses	1.0	2.0	15.0
Other operating expenses		1.0	1.0
Finance income	45.0	108.0	123.0
Finance expenses	38.0	114.0	92.0
Profit (loss) from Discontinued operations/Non-current assets held for sale		10.0	77.0
Continuing operations [member] | Pension funds [member]
Disclosure of transactions between related parties [Line Items]
Employee benefits expenses	74.0	83.0	86.0
Continuing operations [member] | Key managers [member]
Disclosure of transactions between related parties [Line Items]
Employee benefits expenses	€ 37.0	36.0	14.0
Continuing operations [member] | Related parties [member]
Disclosure of transactions between related parties [Line Items]
Revenue		365.0	611.0
Other income		1.0	1.0
Acquisition of goods and services		252.0	362.0
Employee benefits expenses		121.0	115.0
Other operating expenses		1.0	1.0
Finance income		108.0	123.0
Finance expenses		114.0	97.0
Profit (loss) from Discontinued operations/Non-current assets held for sale		€ 9.0	€ 64.0

XML

Related Party Transactions and Direction and Coordination Activity - Summary of Consolidated Statement of Financial Position (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure of transactions between related parties [Line Items]
Non-current financial assets	€ 1,768	€ 2,698
Securities other than investments (current assets)	993	1,519
Financial receivables and other current financial assets	437	389
Cash and cash equivalents	3,575	3,964	€ 3,559	€ 4,812
Current financial assets	(5,005)	(5,872)
Non-current financial liabilities	28,108	30,469
Current financial liabilities	4,756	4,056
Trade and miscellaneous receivables and other current assets	4,959	5,426
Miscellaneous payables and other non-current liabilities	1,678	1,607
Trade and miscellaneous payables and other current liabilities	7,520	7,646
Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Non-current financial assets		520
Securities other than investments (current assets)	15	110
Financial receivables and other current financial assets	38	22
Cash and cash equivalents		621
Non-current financial liabilities	100	912
Current financial liabilities		42
Trade and miscellaneous receivables and other current assets	€ 3	9
Description of type of contract	Payables for contributions to pension funds
Total trade and miscellaneous payables and other current liabilities	€ 24	26
Current financial liabilities	€ 163	133
Financial receivables and other current financial assets [member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Hedging derivatives, loans, financing and finance lease
Cash and cash equivalents [member]
Disclosure of transactions between related parties [Line Items]
Cash and cash equivalents	€ 2,592	2,930
Cash and cash equivalents [member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Bank accounts and deposits.
Trade and miscellaneous receivables and other current assets [Member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous receivables and other current assets	€ 33	127
Trade and miscellaneous receivables and other current assets [Member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Supply of telephone and data transmission services, peripheral data networks, connections, storage, and telecommunications products and services Factoring services, supply of telephone, MPLS and international data network services, ICT services, Microsoft licenses, Internet connectivity and high-speed connections
Trade and miscellaneous payables and other current liabilities [Member]
Disclosure of transactions between related parties [Line Items]
Total trade and miscellaneous payables and other current liabilities	€ 33	200
Trade and miscellaneous payables and other current liabilities [Member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Factoring fees, payable resulting from the collection of receivables sold, fees for smart card top-ups/activation and commissions for payment of telephone bills by direct debit and collections via credit cards
Other minor companies [member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous receivables and other current assets	€ 1	2
Total trade and miscellaneous payables and other current liabilities	1
Miscellaneous payables and other non-current liabilities [Member]
Disclosure of transactions between related parties [Line Items]
Miscellaneous payables and other non-current liabilities		2
Mediobanca group [member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Non-current financial assets		80
Securities other than investments (current assets)	15	81
Financial receivables and other current financial assets	38	1
Non-current financial liabilities	100	364
Current financial liabilities	€ 163	91
Mediobanca group [member] | Non-current financial assets [member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Hedging derivatives
Mediobanca group [member] | Securities other than investments (current assets) [Member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Bonds
Mediobanca group [member] | Financial receivables and other current financial assets [member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Hedging derivatives
Mediobanca group [member] | Non-current financial liabilities [member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Hedging derivatives, loans, financing and finance lease
Mediobanca group [member] | Current financial liabilities [member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Hedging derivatives and loans
Mediobanca group [member] | Trade and miscellaneous receivables and other current assets [Member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous receivables and other current assets		1
Mediobanca group [member] | Trade and miscellaneous receivables and other current assets [Member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Telephone and MPLS data network services and sale of data devices and equipment for fixed and mobile networks.
Mediobanca group [member] | Trade and miscellaneous payables and other current liabilities [Member]
Disclosure of transactions between related parties [Line Items]
Total trade and miscellaneous payables and other current liabilities	€ 1	13
Mediobanca group [member] | Trade and miscellaneous payables and other current liabilities [Member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Credit recovery activities.
Former Telco Companies [member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Non-current financial assets		440
Securities other than investments (current assets)		24
Financial receivables and other current financial assets		21
Non-current financial liabilities		548
Former Telco Companies [member] | Non-current financial assets [member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Hedging derivatives, Finance lease
Former Telco Companies [member] | Securities other than investments (current assets) [Member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Bonds
Former Telco Companies [member] | Financial receivables and other current financial assets [member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Hedging derivatives, Finance lease
Former Telco Companies [member] | Non-current financial liabilities [member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Hedging derivatives and loans
Former Telco Companies [member] | Current financial liabilities [member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Current accounts, hedging derivatives and payables to other lenders
Former Telco Companies [member] | Trade and miscellaneous receivables and other current assets [Member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous receivables and other current assets		126
Former Telco Companies [member] | Trade and miscellaneous payables and other current liabilities [Member]
Disclosure of transactions between related parties [Line Items]
Total trade and miscellaneous payables and other current liabilities		183
Vivendi group [member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Securities other than investments (current assets)		5
Vivendi group [member] | Securities other than investments (current assets) [Member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Bonds
Vivendi group [member] | Trade and miscellaneous payables and other current liabilities [Member]
Disclosure of transactions between related parties [Line Items]
Total trade and miscellaneous payables and other current liabilities	€ 2	4
Vivendi group [member] | Trade and miscellaneous payables and other current liabilities [Member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Purchase of musical and television digital content (TIM MUSIC and TIM VISION)
Other directors [Member] | Trade and miscellaneous receivables and other current assets [Member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous receivables and other current assets	€ 3
Havas group [member] | Trade and miscellaneous receivables and other current assets [Member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous receivables and other current assets	29
Havas group [member] | Trade and miscellaneous payables and other current liabilities [Member]
Disclosure of transactions between related parties [Line Items]
Total trade and miscellaneous payables and other current liabilities	30
Other minor companies [member] | Trade and miscellaneous receivables and other current assets [Member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous receivables and other current assets	1
Other related parties [member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Total trade and miscellaneous payables and other current liabilities	3	37
Related parties [member]
Disclosure of transactions between related parties [Line Items]
Securities other than investments (current assets)	15
Financial receivables and other current financial assets	38
Current financial assets	(53)
Non-current financial liabilities	100
Current financial liabilities	163
Trade and miscellaneous receivables and other current assets	36
Trade and miscellaneous payables and other current liabilities	€ 60
Alfiere SPA [member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Non-current financial assets		12
Description of type of contract	Shareholder loans to Alfiere S.p.A
Alfiere SPA [member] | Trade and miscellaneous receivables and other current assets [Member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous receivables and other current assets	€ 1
Description of type of contract	Contracts for project management, administration, corporate and compliance services, and sundry chargebacks.
Italtel group [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Purchases of telecommunications equipment
Italtel group [member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Total trade and miscellaneous payables and other current liabilities		33
Italtel group [member] | Trade and miscellaneous receivables and other current assets [Member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous receivables and other current assets		6
Description of type of contract	Provision of equipment rental, fixed and mobile telephone and outsourced communication services
Italtel group [member] | Trade and miscellaneous payables and other current liabilities [Member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Supply transactions connected with investment and operations activities
W.A.Y. S.r.l. [member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous receivables and other current assets	€ 1	1
Total trade and miscellaneous payables and other current liabilities	€ 1	2
W.A.Y. S.r.l. [member] | Trade and miscellaneous receivables and other current assets [Member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Supply of fixed-line telephony, ICT and mobile services
W.A.Y. S.r.l. [member] | Trade and miscellaneous payables and other current liabilities [Member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Supply and installation of geolocation equipment and related technical support services within the TIM customer offering
Movenda S.p.A. [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Information technology services and licenses for Mobile Connect Cardlets
Movenda S.p.A. [member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Total trade and miscellaneous payables and other current liabilities	€ 1	1
Movenda S.p.A. [member] | Trade and miscellaneous payables and other current liabilities [Member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	SIM-card supply and certification and functional development of IT platforms.
NordCom S.p.A. [member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Total trade and miscellaneous payables and other current liabilities		€ 1
NordCom S.p.A. [member] | Trade and miscellaneous payables and other current liabilities [Member] | Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Supply and development of IT solutions, provision of customized services as part of TIM offerings to end customers, and rental expense for base transceiver station housing
Discontinued Operations [member]
Disclosure of transactions between related parties [Line Items]
Non-current financial assets		(19.70%)
Securities other than investments (current assets)	1.50%	7.20%
Financial receivables and other current financial assets	8.70%	5.70%
Cash and cash equivalents		15.70%
Current financial assets	1.10%	12.80%
Non-current financial liabilities	0.40%	3.00%
Current financial liabilities	3.40%	3.30%
Trade and miscellaneous receivables and other current assets	0.70%	2.50%
Miscellaneous payables and other non-current liabilities, percentage		0.10%
Trade and miscellaneous payables and other current liabilities	0.80%	3.40%
Discontinued Operations [member] | Related parties [member]
Disclosure of transactions between related parties [Line Items]
Non-current financial assets		€ 532
Securities other than investments (current assets)		110
Financial receivables and other current financial assets		22
Cash and cash equivalents		621
Current financial assets		(753)
Non-current financial liabilities		912
Current financial liabilities		133
Trade and miscellaneous receivables and other current assets		136
Miscellaneous payables and other non-current liabilities		2
Trade and miscellaneous payables and other current liabilities		263
Continuing operations [member] | Other related parties [member]
Disclosure of transactions between related parties [Line Items]
Non-current financial assets		520
Securities other than investments (current assets)	€ 15	110
Financial receivables and other current financial assets	38	22
Cash and cash equivalents		621
Current financial assets	(53)	(753)
Non-current financial liabilities	100	912
Current financial liabilities	163	133
Trade and miscellaneous receivables and other current assets	33	127
Miscellaneous payables and other non-current liabilities		2
Trade and miscellaneous payables and other current liabilities	33	200
Continuing operations [member] | Pension funds [member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous payables and other current liabilities	24	26
Continuing operations [member] | Related parties [member]
Disclosure of transactions between related parties [Line Items]
Non-current financial assets		532
Securities other than investments (current assets)		110
Financial receivables and other current financial assets		22
Cash and cash equivalents		621
Current financial assets		(753)
Non-current financial liabilities		912
Current financial liabilities		133
Trade and miscellaneous receivables and other current assets		136
Miscellaneous payables and other non-current liabilities		2
Trade and miscellaneous payables and other current liabilities		263
Continuing operations [member] | Associates, subsidiaries of associates and joint ventures [member]
Disclosure of transactions between related parties [Line Items]
Non-current financial assets		12
Trade and miscellaneous receivables and other current assets	3	9
Trade and miscellaneous payables and other current liabilities	€ 3	€ 37

XML

Related Party Transactions and Direction and Coordination Activity - Summary of Consolidated Statement of Cash Flows (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of transactions between related parties [Line Items]
Purchase of intangible and tangible assets on an accrual basis	€ 135	€ 159	€ 160
Other minor companies [member]
Disclosure of transactions between related parties [Line Items]
Purchase of intangible and tangible assets on an accrual basis	€ 1		1
Telefonica group [member]
Disclosure of transactions between related parties [Line Items]
Purchase of intangible and tangible assets on an accrual basis			22
Type of contract	Acquisition of transmission capacity with the Telefónica group
Cash flow [Member]
Disclosure of transactions between related parties [Line Items]
Purchase of intangible and tangible assets on an accrual basis	€ 5,769	€ 5,108	6,720
Cash flows from (used in) Discontinued operations/Non-current assets held for sale			€ (19)
Cash flow [Member] | Discontinued Operations [member]
Disclosure of transactions between related parties [Line Items]
Purchase of intangible and tangible assets on an accrual basis, percentage	2.30%	3.10%	2.70%
Purchase of intangible and tangible assets on an accrual basis, Transactions of Discontinued Operations			€ (2)
Italtel group [member]
Disclosure of transactions between related parties [Line Items]
Purchase of intangible and tangible assets on an accrual basis	€ 132	€ 157	158
Type of contract	Purchases of telecommunications equipment
Movenda S.p.A. [member]
Disclosure of transactions between related parties [Line Items]
Purchase of intangible and tangible assets on an accrual basis	€ 2	2	1
Type of contract	Information technology services and licenses for Mobile Connect Cardlets
Associates, subsidiaries of associates and joint ventures [member] | Cash flow [Member] | Continuing operations [member]
Disclosure of transactions between related parties [Line Items]
Purchase of intangible and tangible assets on an accrual basis	€ 135	159	160
Other related parties [member] | Cash flow [Member] | Continuing operations [member]
Disclosure of transactions between related parties [Line Items]
Purchase of intangible and tangible assets on an accrual basis			22
Cash flows from (used in) Discontinued operations/Non-current assets held for sale			(2)
Related parties [member] | Cash flow [Member] | Discontinued Operations [member]
Disclosure of transactions between related parties [Line Items]
Purchase of intangible and tangible assets on an accrual basis		159	180
Related parties [member] | Cash flow [Member] | Continuing operations [member]
Disclosure of transactions between related parties [Line Items]
Purchase of intangible and tangible assets on an accrual basis	€ 135	€ 159	182
Cash flows from (used in) Discontinued operations/Non-current assets held for sale			€ (2)

XML

Related Party Transactions and Direction and Coordination Activity - Additional Information (Detail) - EUR (€)		12 Months Ended
	Jun. 30, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 14, 2015
Disclosure of joint ventures [line items]
Shareholder loan to joint venture					€ 500,000,000
Amount used to cover loan losses		€ 6,000,000
Amount written down		11,000,000
Total remuneration to key managers		37,000,000	€ 36,100,000	€ 13,900,000
Total provision for key managers			3,600,000
Total amount assigned for key managers	€ 1,450,000	1,000,000	9,100,000	€ 2,500,000
Ordinary shares, amount	1,160,000
Ordinary shares	€ 1,487,178
2014/2016 Stock Option Plan [Member]
Disclosure of joint ventures [line items]
Reversal of accruals			3,700,000
TIM S.p.A. [member]
Disclosure of joint ventures [line items]
Issued guarantees		1,000,000
Key managers [member]
Disclosure of joint ventures [line items]
Contributions paid in to defined contribution plans		97,000	95,000
Alfiere SPA [member]
Disclosure of joint ventures [line items]
Shareholder loan to joint venture		€ 5,000,000	€ 12,000,000

XML

Related Party Transactions and Direction and Coordination Activity - Summary of Employee Benefits Expenses (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of transactions between related parties [Line Items]
Total employee benefits expenses	€ 3,626	€ 3,106	€ 3,589
Employee costs [member]
Disclosure of transactions between related parties [Line Items]
Total employee benefits expenses	€ 74	83	86
Type of contract	Contributions to pension funds
Fontedir [member] | Employee costs [member]
Disclosure of transactions between related parties [Line Items]
Total employee benefits expenses	€ 10	11	11
Telemaco [member] | Employee costs [member]
Disclosure of transactions between related parties [Line Items]
Total employee benefits expenses	67	69	70
Other pension funds [member] | Employee costs [member]
Disclosure of transactions between related parties [Line Items]
Total employee benefits expenses	(3)	3	€ 5
Consolidated statement of financial position [Member]
Disclosure of transactions between related parties [Line Items]
Total trade and miscellaneous payables and other current liabilities	€ 24	26
Type of contract	Payables for contributions to pension funds
Consolidated statement of financial position [Member] | Fontedir [member]
Disclosure of transactions between related parties [Line Items]
Total trade and miscellaneous payables and other current liabilities	€ 3	4
Consolidated statement of financial position [Member] | Telemaco [member]
Disclosure of transactions between related parties [Line Items]
Total trade and miscellaneous payables and other current liabilities	€ 21	21
Consolidated statement of financial position [Member] | Other pension funds [member]
Disclosure of transactions between related parties [Line Items]
Total trade and miscellaneous payables and other current liabilities		€ 1

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Related Party Transactions and Direction and Coordination Activity - Summary of Remuneration to Key Managers (Detail) - EUR (€)		12 Months Ended
	Jun. 30, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Classes of employee benefits expense [abstract]
Short-term remuneration		€ 10,400,000	€ 13,100,000	€ 11,400,000
Long-term remuneration		100,000	1,900,000
Employment termination benefit incentives		25,500,000	12,000,000
Share-based payments	€ 1,450,000	1,000,000	9,100,000	2,500,000
Total		€ 37,000,000	€ 36,100,000	€ 13,900,000

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Related Party Transactions and Direction and Coordination Activity - Summary of Remuneration to Key Managers (Parenthetical) (Detail) - EUR (€)		12 Months Ended
	Jun. 30, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure Of Employee Salaries And Benefit Expenses [Line Items]
Short-term remuneration		€ 10,400,000	€ 13,100,000	€ 11,400,000
Long-term remuneration		100,000	1,900,000
Employment termination benefit incentives		25,500,000	12,000,000
Share-based payments	€ 1,450,000	1,000,000	9,100,000	2,500,000
Latin American subsidiaries [member]
Disclosure Of Employee Salaries And Benefit Expenses [Line Items]
Short-term remuneration		1,600,000	1,100,000	600,000
Long-term remuneration		100,000
Employment termination benefit incentives			600,000
Share-based payments		€ 1,000,000	€ 200,000	€ 400,000

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Related Party Transactions and Direction and Coordination Activity - Summary of Key Figures Taken from Latest Approved Financial Statements (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure of transactions between related parties [Line Items]
Other non-currentassets	€ 5,251.0	€ 5,861.0
Current assets	10,331.0	11,662.0
Prepaid expenses	513.0	427.0
TOTAL ASSETS	68,783.0	70,446.0
Equity	23,783.0	23,553.0	€ 21,249.0	€ 21,584.0
Share capital	11,587.0	11,587.0
Provisions	825.0	830.0
Liabilities	45,000.0	46,893.0
TOTAL EQUITY AND LIABILITIES	68,783.0	70,446.0
Revenues	19,828.0	19,025.0	19,719.0
Net financial income	1,808.0	2,543.0	2,760.0
Profit (loss) before extraordinary items and tax	1,777.0	2,799.0	453.0
Income tax (expense)/return	(490.0)	(880.0)	(403.0)
Profit (loss) for the year	€ 1,287.0	1,966.0	€ 661.0
Vivendi group [member]
Disclosure of transactions between related parties [Line Items]
Other non-currentassets		20,196.0
Current assets		6,878.4
Prepaid expenses		9.5
TOTAL ASSETS		27,083.9
Equity		18,854.8
Share capital		7,079.0
Reserves		9,804.9
Retained earnings (Accumulated losses), including profit (loss) for the year		1,970.9
Provisions		809.3
Liabilities		7,392.5
Unrealized exchange gains		27.3
TOTAL EQUITY AND LIABILITIES		27,083.9
Revenues		46.0
EBIT		(110.4)
Net financial income		862.1
Profit (loss) before extraordinary items and tax		751.7
Net extraordinary income		802.1
Income tax (expense)/return		55.7
Profit (loss) for the year		€ 1,609.5

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Equity Compensation Plans - TIM S.p.A Stock Option Plan - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017 € / shares
Disclosure of terms and conditions of share-based payment arrangement [line items]
Percentage of options exercisable at assigned targets	20.00%
Percentage of options vesting at assigned targets	40.00%
Exercise price	€ 0.94
Range One [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of share outstanding	133,042
Strike price	€ 1.15
Range Two [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of share outstanding	343,069
Strike price	€ 1.01
Range Three [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of share outstanding	893,617
Strike price	€ 0.99
Range Four [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of share outstanding	13,555,651
Strike price	€ 0.94
2014/2016 Stock Option Plan [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of shares available for issue	196,000,000

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Equity Compensation Plans - TIM Participacoes S.A Stock Option Plan - Additional Information (Detail) - 12 months ended Dec. 31, 2017	EUR (€) shares	BRL (R$)
2011-2013 Tim Participacoes S.A. Stock Option Plan [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Description of vesting requirements	The vesting period is 3 years (a third per year), the options are valid for 6 years, and the company does not have the legal obligation to repurchase or liquidate the options in cash, or in any other form.	The vesting period is 3 years (a third per year), the options are valid for 6 years, and the company does not have the legal obligation to repurchase or liquidate the options in cash, or in any other form.
2011 Tim Participacoes S A Stock Option Plan [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of shares granted	2,833,596	2,833,596
Shares exercise period expiration date	Aug. 30, 2017	Aug. 30, 2017
2012 Tim Participacoes Sa Stock Option Plan [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of shares granted	2,661,752	2,661,752
Date of grant	Sep. 05, 2012	Sep. 05, 2012
Number of shares vested	255,556	255,556
2013 Tim Participacoes S A Stock Option Plan [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of shares granted	3,072,418	3,072,418
Date of grant	Jul. 30, 2013	Jul. 30, 2013
Number of shares exercisable	0
Number of shares still not met minimum performance	844,914	844,914
2014-2016 Tim Participacoes S.A. Stock Option Plan [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Description of vesting requirements	If the performance of the Tim Participações S.A. shares, in the 30 days prior to September 29 of each year, is in last place in that ranking, the participant loses the right to 25% of the options vesting at that time.	If the performance of the Tim Participações S.A. shares, in the 30 days prior to September 29 of each year, is in last place in that ranking, the participant loses the right to 25% of the options vesting at that time.
2014 Tim Participacoes S.A. Stock Option Plan [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of shares granted	1,687,686	1,687,686
Date of grant	Sep. 29, 2014	Sep. 29, 2014
Number of shares vested	658,720	658,720
2015 Tim Participacoes S A Stock Option Plan [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of shares granted	3,355,229	3,355,229
Date of grant	Oct. 16, 2015	Oct. 16, 2015
Number of shares exercised	760,358	760,358
Number of shares expired	713,561	713,561
Percentage of option price adjustment for ranking	3.33%	3.33%
2015 Tim Participacoes S A Stock Option Plan [Member] | First Wave [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of shares exercised	197,132	197,132
Exercise price of share option | R$		R$ 8.7341
2015 Tim Participacoes S A Stock Option Plan [Member] | Second Wave [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of shares exercised	563,226	563,226
Exercise price of share option | R$		R$ 8.4625
2016 Tim Participacoes SA Stock Option Plan [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of shares granted	3,922,204	3,922,204
Date of grant	Nov. 08, 2016	Nov. 08, 2016
Exercise price of share option | R$		R$ 7.6928
Percentage for target level adjustment for positioning in first place	5.00%	5.00%
2016/2019 Special Award [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Net liability | €	€ 3,100,000
Liabilities from equity-settled share-based payment transactions | €	€ 2,400,000
Ordinary shares issued | shares	2,902,561
Settlements agreements reached | €	€ 22.9
Percentage of share bonus	80.00%	80.00%
Percentage of cash bonus	20.00%	20.00%
2016/2019 Special Award [Member] | Beneficiaries [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Percentage of over performance	1.50%	1.50%

XML

Equity Compensation Plans - Fair Value Measurement of the Granted Options and Rights - Details (Detail)	12 Months Ended
	Dec. 31, 2017 BRL (R$) yr
Stock Option Plan 2011 [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Stock option plan, exercise price	R$ 8.84
Stock option plan, volatility	51.73%
Stock option plan, period | yr	6
Stock option plan, expected dividends	R$ 0
Stock option plan 2011	11.94%
Stock Option Plan 2012 [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Stock option plan, exercise price	R$ 8.96
Stock option plan, volatility	50.46%
Stock option plan, period | yr	6
Stock option plan, expected dividends	R$ 0
Stock option plan 2011	8.89%
Stock Option Plan 2013 [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Stock option plan, exercise price	R$ 8.13
Stock option plan, volatility	48.45%
Stock option plan, period | yr	6
Stock option plan, expected dividends	R$ 0
Stock option plan 2011	10.66%
Stock Option Plan 2014 [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Stock option plan, exercise price	R$ 13.42
Stock option plan, volatility	44.60%
Stock option plan, period | yr	6
Stock option plan, expected dividends	R$ 0
Stock option plan 2011	10.66%
Stock Option Plan 2015 [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Stock option plan, exercise price	R$ 8.45
Stock option plan, volatility	35.50%
Stock option plan, period | yr	6
Stock option plan, expected dividends	R$ 0
Stock option plan 2011	16.10%
Stock Option Plan 2016 [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Stock option plan, exercise price	R$ 8.10
Stock option plan, volatility	36.70%
Stock option plan, period | yr	6
Stock option plan, expected dividends	R$ 0
Stock option plan 2011	11.73%

XML

Other Information - Summary of Exchange Rates Used to Convert the Financial Statements of Foreign Operations (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Europe [member] | Bulgaria, Leva
Disclosure of Additional Information [Line Items]
Year-end exchange rates	1.95580	1.95580	1.95580
Average exchange rates for the year	1.95580	1.95580	1.95580
Europe [member] | Czech Republic, Koruny
Disclosure of Additional Information [Line Items]
Year-end exchange rates	25.53500	27.02100	27.02300
Average exchange rates for the year	26.32656	27.03443	27.28277
Europe [member] | Switzerland, Francs
Disclosure of Additional Information [Line Items]
Year-end exchange rates	1.17020	1.07390	1.08350
Average exchange rates for the year	1.11171	1.09004	1.06813
Europe [member] | Turkey, New Lira
Disclosure of Additional Information [Line Items]
Year-end exchange rates	4.54640	3.70720	3.17650
Average exchange rates for the year	4.12109	3.34284	3.02349
Europe [member] | GBP [member]
Disclosure of Additional Information [Line Items]
Year-end exchange rates	0.88723	0.85618	0.73395
Average exchange rates for the year	0.87640	0.81905	0.72612
Europe [member] | Romania, New Lei
Disclosure of Additional Information [Line Items]
Year-end exchange rates	4.65850	4.53900	4.52400
Average exchange rates for the year	4.56884	4.49053	4.44555
Europe [member] | Russia, Rubles
Disclosure of Additional Information [Line Items]
Year-end exchange rates	69.39200	64.30000	80.67400
Average exchange rates for the year	65.90160	74.15831	68.03509
North America [member] | USD [member]
Disclosure of Additional Information [Line Items]
Year-end exchange rates	1.19930	1.05410	1.08870
Average exchange rates for the year	1.12946	1.10666	1.10970
Latin America [member] | Venezuelan bolívar fuerte
Disclosure of Additional Information [Line Items]
Year-end exchange rates	16.19055	14.23035	14.69745
Average exchange rates for the year	15.18018	14.90133	13.71398
Latin America [member] | Bolivia, Bolivianos
Disclosure of Additional Information [Line Items]
Year-end exchange rates	8.28720	7.28383	7.52292
Average exchange rates for the year	7.80453	7.64702	7.66808
Latin America [member] | Peru, Nuevos Soles
Disclosure of Additional Information [Line Items]
Year-end exchange rates	3.88540	3.54020	3.70833
Average exchange rates for the year	3.68247	3.73505	3.53192
Latin America [member] | Argentina, Pesos
Disclosure of Additional Information [Line Items]
Year-end exchange rates	22.93100	16.74880	14.09720
Average exchange rates for the year	18.73314	16.33204	10.26890
Latin America [member] | Chile, Pesos
Disclosure of Additional Information [Line Items]
Year-end exchange rates	737.29000	704.94500	772.71300
Average exchange rates for the year	732.28973	748.49536	726.01073
Latin America [member] | Colombia, Pesos
Disclosure of Additional Information [Line Items]
Year-end exchange rates	3,580.19000	3,169.49000	3,456.01000
Average exchange rates for the year	3,334.88410	3,376.68116	3,046.29559
Latin America [member] | BRL [member]
Disclosure of Additional Information [Line Items]
Year-end exchange rates	3.96728	3.43542	4.25116
Average exchange rates for the year	3.60584	3.85935	3.69727
Other Countries [member] | Israel, New Shekels
Disclosure of Additional Information [Line Items]
Year-end exchange rates	4.16350	4.04770	4.24810
Average exchange rates for the year	4.06091	4.24812	4.31323

XML

Other Information - Summary of Research and Development (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of additional information [abstract]
Research and development costs expensed during the year	€ 43	€ 44	€ 52
Development costs capitalized	1,949	1,704	1,668
Total research and development costs (expensed and capitalized)	€ 1,992	€ 1,748	€ 1,720

XML

Other Information - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of additional information [abstract]
Amortization of capitalized development costs	€ 819	€ 731	€ 660

XML

Other Information - Summary of the Amount of Lease Installments Receivables (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Additional Information [Line Items]
Amount of lease installments receivables	€ 460	€ 493
Within 1 year [member]
Disclosure of Additional Information [Line Items]
Amount of lease installments receivables	124	118
From 2 to 5 years [member]
Disclosure of Additional Information [Line Items]
Amount of lease installments receivables	238	247
Beyond 5 years [member]
Disclosure of Additional Information [Line Items]
Amount of lease installments receivables	€ 98	€ 128

XML

Other Information - Summary of the Amount of Lease Installments Payables (Detail) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Additional Information [Line Items]
Amount of lease installments payables	€ 535	€ 501
Within 1 year [member]
Disclosure of Additional Information [Line Items]
Amount of lease installments payables	177	175
From 2 to 5 years [member]
Disclosure of Additional Information [Line Items]
Amount of lease installments payables	298	287
Beyond 5 years [member]
Disclosure of Additional Information [Line Items]
Amount of lease installments payables	€ 60	€ 39

XML

Events Subsequent to December 31, 2017 - Additional Information (Detail)	May 06, 2018
Netco [member]
Disclosure of non-adjusting events after reporting period [line items]
Ownership percentage	100

XML

List of Companies of the Tim Group - Summary of List of Companies of the Tim Group (Detail)	12 Months Ended
	Dec. 31, 2017 shares
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Currency	The TIM Group consolidated financial statements at December 31, 2017 are expressed in euro.
TI SPARKLE UK Ltd [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE UK Ltd (value-added and networking services)
Head Office	LONDON (UK)
Currency	EUR
Share Capital	3,983,254
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TIM CELULAR S.A. [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TIM S.A. (formerly INTELIG TRELECOMUNICAÇÕES Ltda) (telecommunications services)
Head Office	RIO DE JANEIRO (BRAZIL)
Currency	BRL
Share Capital	4,041,956,045
% ownership	0.0001%
Held by	TIM CELULAR S.A.
4G RETAIL S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	4G RETAILS.r.l. (sale of fixed and mobile telecommunications products and services and all analog and digital broadcasting equipment)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	2,402,241
% ownership	100.00%
Held by	TIM S.p.A.
ADVANCED CARING CENTER S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	ADVANCED CARING CENTER S.r.l. (telemarketing, market research and surveys activities and development)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	600,000
% ownership	100.00%
Held by	TELECONTACT CENTER S.p.A.
ALFABOOK S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	ABOOK S.r.l. -line sale of digital ALFABOOK S.r.l. (on-line sale of digital texts)
Head Office	TURIN (ITALY)
Currency	EUR
Share Capital	100,000
% ownership	100.00%
Held by	OLIVETTI S.p.A.
CD FIBER S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	CD FIBER S.r.l. (development, implementation, maintenance and management of services network infrastructure and high-speed electronic communication systems)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	50,000
% ownership	100.00%
Held by	TIM S.p.A.
FLASH FIBER S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	FLASH FIBER S.r.l. (development, implementation, maintenance and supply of the fiber network in Italy
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	30,000
% ownership	80.00%
Held by	TIM S.p.A.
H.R. SERVICES S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	H.R.SERVICES S.r.l. (personnel training and services)
Head Office	L'AQUILA (ITALY)
Currency	EUR
Share Capital	500,000
% ownership	100.00%
Held by	TIM S.p.A.
TIM S.p.A [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	11,677,002,855
INFRASTRUTTURE WIRELESS ITALIANE S.p.A.. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	INFRASTRUTTURE WIRELESS ITALIANE .p.A.. (installation and operation of installations and infrastructure for the management and the sale of telecommunications services)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	600,000,000
% ownership	60.0333%
Held by	TIM S.p.A.
MED-1 SUBMARINE CABLES Ltd [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	MED-1 SUBMARINE CABLES Ltd (construction and management of submarine cable Lev1)
Head Office	RAMAT GAN (ISRAEL)
Currency	ILS
Share Capital	55,886,866
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
NOVERCA S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	NOVERCA S.r.l. (development and provision of service in the TLC and multimedia sector in taly and abroad)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	10,000
% ownership	100.00%
Held by	TIM S.p.A.
OLIVETTI S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	OLIVETTI S.p.A. (production and sale of office equipment and information technology services)
Head Office	IVREA (TURIN- ITALY)
Currency	EUR
Share Capital	10,000,000
% ownership	100.00%
Held by	TIM S.p.A.
PERSIDERA S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	PERSIDERA S.p.A. (purchase, sale and maintenance of systems for repair work and radio and television broadcasting)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	21,428,572
% ownership	70.00%
Held by	TIM S.p.A.
TELECOM ITALIA SAN MARINO S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TELECOM ITALIA SAN MARINO S.p.A. San Marino telecommunications Management)
Head Office	BORGO MAGGIORE (REPUBLIC OF SAN MARINO)
Currency	EUR
Share Capital	1,808,000
% ownership	100.00%
Held by	TIM S.p.A.
TELECOM ITALIA SPARKLE S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TELECOM ITALIA SPARKLE S.p.A. (completion and management of Telecommunications services for public and private use)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	200,000,000
% ownership	100.00%
Held by	TIM S.p.A.
TELECOM ITALIA TRUST TECHNOLOGIES S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TELECOM ITALIA TRUST TECHNOLOGIES S.r.l. (other operations related to on-classified IT services)
Head Office	POMEZIA (ROME- ITALY)
Currency	EUR
Share Capital	7,000,000
% ownership	100.00%
Held by	TIM S.p.A.
TELECOM ITALIA VENTURES S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TELECOM ITALIA VENTURES S.r.l. (investment holding company)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	10,000
% ownership	100.00%
Held by	TIM S.p.A.
TELECONTACT CENTER S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TELECONTACT CENTER S.p.A. (telemarketing services)
Head Office	NAPLES (ITALY)
Currency	EUR
Share Capital	3,000,000
% ownership	100.00%
Held by	TIM S.p.A.
TELEFONIA MOBILE SAMMARINESE S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TELEFONIA MOBILE SAMMARINESE S.p.A. (development and management of mobile telecommunications plants and services)
Head Office	BORGO MAGGIORE (REPUBLIC OF SAN MARINO)
Currency	EUR
Share Capital	78,000
% ownership	51.00%
Held by	TELECOM ITALIA SAN MARINO S.p.A.
TELENERGIA S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TELENERGIA S.r.l. (import, export, purchase, sale and trade of electricity)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	50,000
% ownership	100.00%
Held by	TIM S.p.A.
TELSY ELETTRONICA E TELECOMUNICAZIONI S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TELSY ELETTRONICA E TELECOMUNICAZIONI S.p.A. (production and sale of equipment and systems for crypto telecommunications)
Head Office	TURIN (ITALY)
Currency	EUR
Share Capital	390,000
% ownership	100.00%
Held by	TIM S.p.A.
TI SPARKLE AMERICAS Inc. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE AMERICAS Inc. (managed bandwidth services)
Head Office	MIAMI (USA)
Currency	USD
Share Capital	10,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE ARGENTINA S.A. [member] | TI SPARKLE IRELAND TELECOMMUNICATIONS Ltd [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE ARGENTINA S.A. (managed bandwidth services)
Head Office	BUENOS AIRES (ARGENTINA)
Currency	ARS
Share Capital	9,998,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE AUSTRIA GmbH [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE AUSTRIA GmbH telecommunications services)
Head Office	VIENNA (AUSTRIA)
Currency	EUR
Share Capital	2,735,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE BELGIUM S.P.R.L.-B.V.B.A [member] | TELECOM ITALIA SPARKLE S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE BELGIUM S.P.R.L.-B.V.B.A (telecommunications services)
Head Office	BRUSSELS (BELGIUM)
Currency	EUR
Share Capital	2,200,000
% ownership	99.9999%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE BELGIUM S.P.R.L.-B.V.B.A [member] | TI SPARKLE UK Ltd [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE BELGIUM S.P.R.L.-B.V.B.A (telecommunications services)
Head Office	BRUSSELS (BELGIUM)
Currency	EUR
Share Capital	2,200,000
% ownership	0.0001%
Held by	TI SPARKLE UK Ltd
TI SPARKLE BOLIVIA SRL [member] | TELECOM ITALIA SPARKLE S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE BOLIVIA SRL (managed bandwidth services)
Head Office	LA PAZ (BOLIVIA)
Currency	BOB
Share Capital	1,747,600
% ownership	99.9999%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE BOLIVIA SRL [member] | TI SPARKLE AMERICAS Inc. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE BOLIVIA SRL (managed bandwidth services)
Head Office	LA PAZ (BOLIVIA)
Currency	BOB
Share Capital	1,747,600
% ownership	0.0001%
Held by	TI SPARKLE AMERICAS Inc.
TI SPARKLE BRASIL PARTICIPACOES Ltda [member] | TI SPARKLE IRELAND TELECOMMUNICATIONS Ltd [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE BRASIL PARTICIPACOES Ltda (investment holding company)
Head Office	RIO DE JANEIRO (BRAZIL)
Currency	BRL
Share Capital	71,563,866
% ownership	99.9999%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE BRASIL PARTICIPACOES Ltda [member] | TELECOM ITALIA SPARKLE S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE BRASIL PARTICIPACOES Ltda (investment holding company)
Head Office	RIO DE JANEIRO (BRAZIL)
Currency	BRL
Share Capital	71,563,866
% ownership	0.0001%
Held by	TI SPARKLE AMERICAS Inc.
TI SPARKLE BRASIL TELECOMUNICACIONES Ltda [member] | TI SPARKLE AMERICAS Inc. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE BRASIL TELECOMUNICACIONES tda (managed bandwidth services)
Head Office	RIO DE JANEIRO (BRAZIL)
Currency	BRL
Share Capital	69,337,363
% ownership	0.0001%
Held by	TI SPARKLE AMERICAS Inc.
TI SPARKLE BRASIL TELECOMUNICACIONES Ltda [member] | TI SPARKLE BRASIL PARTICIPACOES Ltda [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE BRASIL TELECOMUNICACIONES tda (managed bandwidth services)
Head Office	RIO DE JANEIRO (BRAZIL)
Currency	BRL
Share Capital	69,337,363
% ownership	99.9999%
Held by	TI SPARKLE BRASIL PARTICIPACOES Ltda
TI SPARKLE BULGARIA EOOD [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE BULGARIA EOOD (telecommunications services)
Head Office	SOFIA (BULGARIA)
Currency	BGN
Share Capital	100,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI Sparkle Chile S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE CHILE S.p.A. (managed bandwidth services)
Head Office	SANTIAGO (CHILE)
Currency	CLP
Share Capital	5,852,430,960
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE COLOMBIA Ltda [member] | TI SPARKLE IRELAND TELECOMMUNICATIONS Ltd [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE COLOMBIA Ltda (managed bandwidth services)
Head Office	BOGOTA' (COLOMBIA)
Currency	COP
Share Capital	5,246,906,000
% ownership	99.9999%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE COLOMBIA Ltda [member] | TI SPARKLE AMERICAS Inc. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE COLOMBIA Ltda (managed bandwidth services)
Head Office	BOGOTA' (COLOMBIA)
Currency	COP
Share Capital	5,246,906,000
% ownership	0.0001%
Held by	TI SPARKLE AMERICAS Inc.
TI SPARKLE CZECH S.R.O. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE CZECH S.R.O. (telecommunications services)
Head Office	PRAGUE (CZECH REPUBLIC)
Currency	CZK
Share Capital	6,720,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI Sparkle France S.A.S. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE FRANCE S.A.S. (installation and management of telecommunications services for fixed network and related activities)
Head Office	PARIS (FRANCE)
Currency	EUR
Share Capital	18,295,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE GERMANY GmbH [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE GERMANY GmbH (telecommunications services)
Head Office	FRANKFURT (GERMANY)
Currency	EUR
Share Capital	25,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE GREECE S.A. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE GREECE S.A. (telecommunications services)
Head Office	ATHENS (GREECE)
Currency	EUR
Share Capital	368,760
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI Sparkle Israel Ltd [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE ISRAEL Ltd (international wholesale telecommunication services)
Head Office	RAMAT GAN (ISRAEL)
Currency	ILS
Share Capital	1,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE MED S.p.A. [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE MED S.p.A. (installation and management of submarine cable systems)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	3,100,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE NORTH AMERICA. INC. [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE NORTH AMERICA. INC. (telecommunications and promotional services)
Head Office	NEW YORK (USA)
Currency	USD
Share Capital	15,550,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE NETHERLANDS B.V. [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE NETHERLANDS B.V. telecommunications services)
Head Office	AMSTERDAM (NETHERLANDS)
Currency	EUR
Share Capital	18,200
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE PANAMA S.A. [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE PANAMA S.A. (managed bandwidth services)
Head Office	PANAMA
Currency	USD
Share Capital	10,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE PERU' S.A. [Member] | TI SPARKLE IRELAND TELECOMMUNICATIONS Ltd [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE PERU' S.A. (managed bandwidth services)
Head Office	LIMA (PERÙ)
Currency	PEN
Share Capital	57,101,788
% ownership	99.9999%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE PERU' S.A. [Member] | TI SPARKLE AMERICAS Inc. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE PERU' S.A. (managed bandwidth services)
Head Office	LIMA (PERÙ)
Currency	PEN
Share Capital	57,101,788
% ownership	0.0001%
Held by	TI SPARKLE AMERICAS Inc.
TI SPARKLE PUERTO RICO LLC [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE PUERTO RICO LLC (managed bandwidth services)
Head Office	SAN JUAN (PUERTO RICO)
Currency	USD
Share Capital	50,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TT SPARKLE ROMANIA S.R.L. [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE ROMANIA S.R.L. (telecommunications services)
Head Office	BUCHAREST (ROMANIA)
Currency	RON
Share Capital	3,021,560
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI Sparkle Russia LLC [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE RUSSIA LLC (telecommunications services)
Head Office	MOSCOW (RUSSIA)
Currency	RUB
Share Capital	8,520,000
% ownership	99.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE UK Ltd [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE RUSSIA LLC (telecommunications services)
Head Office	MOSCOW (RUSSIA)
Currency	RUB
Share Capital	8,520,000
% ownership	1.00%
Held by	TI SPARKLE UK Ltd
TI SPARKLE SINGAPORE PTE. Ltd [Member] | TELECOM ITALIA SPARKLE S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE SINGAPORE PTE. Ltd (telecommunications services)
Head Office	SINGAPORE
Currency	USD
Share Capital	5,121,120
% ownership	99.9999%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE SINGAPORE PTE. Ltd [Member] | TI SPARKLE NORTH AMERICA. INC. [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE SINGAPORE PTE. Ltd (telecommunications services)
Head Office	SINGAPORE
Currency	USD
Share Capital	5,121,120
% ownership	0.0001%
Held by	TI SPARKLE NORTH AMERICA. INC.
TI SPARKLE SLOVAKIA S.R.O. [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE SLOVAKIA S.R.O. (telecommunications services)
Head Office	BRATISLAVA (SLOVAKIA)
Currency	EUR
Share Capital	300,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE SPAIN TELECOMMUNICATIONS SL [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE SPAIN TELECOMMUNICATIONS SL (telecommunications services)
Head Office	MADRID (SPAIN)
Currency	EUR
Share Capital	1,687,124
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE St. Croix LLC [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE St. Croix LLC (managed bandwidth services)
Head Office	VIRGIN ISLANDS (USA)
Currency	USD
Share Capital	1,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE SWITZERLAND GmbH [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE SWITZERLAND GmbH (telecommunications services)
Head Office	ZURICH (SWITZERLAND)
Currency	CHF
Share Capital	2,000,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE TURKEY TELEKOMUNIKASYON ANONIM SIRKETI [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE TURKEY TELEKOMÜNIKASYON NONIM SIRKETI (telecommunications services)
Head Office	YENISBONA (ISTANBUL- TURKEY)
Currency	TRY
Share Capital	40,600,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE VENEZUELA C.A. [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TI SPARKLE VENEZUELA C.A. (managed bandwidth service)
Head Office	CARACAS (VENEZUELA)
Currency	VEF
Share Capital	981,457
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TIMB2 S.r.l. [Member] | PERSIDERA S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TIMB2 S.r.l. (management of television frequency user rights)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	10,000
% ownership	99.00%
Held by	PERSIDERA S.p.A.
TIMB2 S.r.l. [Member] | TIM S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TIMB2 S.r.l. (management of television frequency user rights)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	10,000
% ownership	1.00%
Held by	TIM S.p.A.
TIMVISION S.r.l. [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TIMVISION S.r.l.( production, co-production,conception and creation of programs, films and audiovisual content, including multimedia and interactive content)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	50,000
% ownership	100.00%
Held by	TIM S.p.A.
TN FIBER S.r.l. [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TN FIBER S.r.l. (design, construction, maintenance and supply of optical network access to users in the province of Trento)
Head Office	TRENTO (ITALY)
Currency	EUR
Share Capital	55,918,000
% ownership	100.00%
Held by	TIM S.p.A.
TIM BRASIL SERVICOS E PARTICIPACOES S.A. [Member] | TIM S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TIM BRASIL SERVIÇOS E PARTICIPAÇÕES .A. (investment holding company)
Head Office	RIO DE JANEIRO (BRAZIL)
Currency	BRL
Share Capital	7,169,029,859
% ownership	0.0001%
Held by	TIM S.p.A.
TIM BRASIL SERVICOS E PARTICIPACOES S.A. [Member] | TELECOM ITALIA FINANCE S.A. [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TIM BRASIL SERVIÇOS E PARTICIPAÇÕES .A. (investment holding company)
Head Office	RIO DE JANEIRO (BRAZIL)
Currency	BRL
Share Capital	7,169,029,859
% ownership	99.9999%
Held by	TELECOM ITALIA FINANCE S.A.
TIM CELULAR S.A. [Member] | TIM S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TIM CELULAR S.A. (telecommunications services)
Head Office	SAO PAULO (BRAZIL)
Currency	BRL
Share Capital	9,434,215,720
% ownership	100.00%
Held by	TIM PARTICIPAÇÕES S.A.
TIM PARTICIPACOES S.A. [Member] | TIM BRASIL SERVICOS E PARTICIPACOES S.A. [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TIM PARTICIPAÇÕES S.A. (investment holding company)
Head Office	RIO DE JANEIRO (BRAZIL)
Currency	BRL
Share Capital	9,913,414,422
% ownership	66.5819%
Held by	TIM BRASIL SERVIÇOS E PARTICIPAÇÕES S.A.
TIM PARTICIPACOES S.A. [Member] | TIM PARTICIPACOES S.A. [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TIM PARTICIPAÇÕES S.A. (investment holding company)
Head Office	RIO DE JANEIRO (BRAZIL)
Currency	BRL
Share Capital	9,913,414,422
% ownership	0.0662%
Held by	TIM PARTICIPAÇÕES S.A.
Tim S.A. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TIM S.A. (formerly INTELIG TRELECOMUNICAÇÕES Ltda) (telecommunications services)
Head Office	RIO DE JANEIRO (BRAZIL)
Currency	BRL
Share Capital	4,041,956,045
% ownership	99.9999%
Held by	TIM PARTICIPAÇÕES S.A.
OLIVETTI DEUTSCHLAND GmbH [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	OLIVETTI DEUTSCHLAND GmbH (sale of office equipment and supplies
Head Office	NURNBERG (GERMANY)
Currency	EUR
Share Capital	25,600,000
% ownership	100.00%
Held by	OLIVETTI S.p.A.
OLIVETTI ESPANA S.A. [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	OLIVETTI ESPANA S.A. (IN LIQUIDATION) (sale and maintenance of office supplies, consultancy and network management)
Head Office	BARCELONA (SPAIN)
Currency	EUR
Share Capital	1,229,309
% ownership	100.00%
Held by	OLIVETTI S.p.A.
OLIVETTI UK Ltd [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	OLIVETTI UK Ltd (sale of office equipment and supplies
Head Office	NORTHAMPTON (UK)
Currency	GBP
Share Capital	6,295,712
% ownership	100.00%
Held by	OLIVETTI S.p.A.
TELECOM ITALIA CAPITAL S.A. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TELECOM ITALIA CAPITAL S.A. (financial company)
Head Office	LUXEMBOURG (LUXEMBOURG)
Currency	EUR
Share Capital	2,336,000
% ownership	100.00%
Held by	TIM S.p.A.
TELECOM ITALIA FINANCE S.A. [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TELECOM ITALIA FINANCE S.A. (financial company)
Head Office	LUXEMBOURG (LUXEMBOURG)
Currency	EUR
Share Capital	1,818,691,979
% ownership	100.00%
Held by	TIM S.p.A.
TELECOM ITALIA LATAM PARTICIPACOES E GESTAO ADMINISTRATIVA Ltda [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TELECOM ITALIA LATAM PARTICIPACOES E ESTAO ADMINISTRATIVA Ltda (provision of telecommunications and representation services)
Head Office	SAO PAULO (BRAZIL)
Currency	BRL
Share Capital	118,925,803
% ownership	100.00%
Held by	TIM S.p.A.
TIAUDIT COMPLIANCE LATAM S.A. [Member] | TIM S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TIAUDIT COMPLIANCE LATAM S.A. (IN IQUIDATION) (internal auditing services)
Head Office	RIO DE JANEIRO (BRAZIL)
Currency	BRL
Share Capital	1,500,000
% ownership	69.9996%
Held by	TIM S.p.A.
TIAUDIT COMPLIANCE LATAM S.A. [Member] | TIM BRASIL SERVICOS E PARTICIPACOES S.A. [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TIAUDIT COMPLIANCE LATAM S.A. (IN IQUIDATION) (internal auditing services)
Head Office	RIO DE JANEIRO (BRAZIL)
Currency	BRL
Share Capital	1,500,000
% ownership	30.0004%
Held by	TIM BRASIL
TIESSE S.c.p.A. [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TIESSE S.c.p.A. (installation and assistance for electronic, IT, telematics and telecommunications equipment)
Head Office	IVREA (TURIN-ITALY)
Currency	EUR
Share Capital	103,292
% ownership	61.00%
Held by	OLIVETTI S.p.A.
TIM TANK S.r.l. [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TIM TANK S.r.l. (fund and securities investments)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	18,100,000
% ownership	100.00%
Held by	TIM S.p.A.
Alfiere SPA [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	ALFIERE S.p.A. (*) (real estate management)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	9,250,000
% ownership	50.00%
Held by	TIM S.p.A.
Aree Urbane Srl [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	AREE URBANE S.r.l. (IN LIQUIDATION) (real estate management)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	100,000
% ownership	32.62%
Held by	TIM S.p.A.
ASSCOM INSURANCE BROKERS S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	ASSCOM INSURANCE BROKERS S.r.l. (insurance brokerage)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	100,000
% ownership	20.00%
Held by	TIM S.p.A.
Baltea Srl [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	BALTEA S.r.l. (IN BANKRUPTCY) (production and sale of office product and telecommunications IT services)
Head Office	IVREA (TURIN- ITALY)
Currency	EUR
Share Capital	100,000
% ownership	49.00%
Held by	OLIVETTI S.p.A.
CLOUDESIRE.COM S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	CLOUDESIRE.COM S.r.l. design, implementation and marketing f a marketplace platform for the sale of a software as-a-service applications
Head Office	PISA (ITALY)
Currency	EUR
Share Capital	11,671
Held by	TELECOM ITALIA VENTURES S.r.l.
CONSORZIO ANTENNA MONTECONERO [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	CONSORZIO ANTENNA COLBUCCARO (installation, management and maintenance ofmetal pylons complete with workstations for device recovery)
Head Office	ASCOLI PICENO (ITALY)
Currency	EUR
Share Capital	121,000
% ownership	20.00%
Held by	PERSIDERA S.p.A.
Consorzio Antenna Monteconero [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	CONSORZIO ANTENNA MONTECONERO (multimedia services)
Head Office	SIROLO (ANCONA-ITALY)
Currency	EUR
Share Capital	51,100
% ownership	22.2211%
Held by	PERSIDERA S.p.A.
Consorzio E O [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	CONSORZIO E O (IN LIQUIDATION) (training services)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	30,987
% ownership	50.00%
Held by	TIM S.p.A.
Dono Per Scarl [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	DONO PER S.C.A.R.L. (IN LIQUIDATION) (collection and distribution of funds or charitable purposes or for financing of political parties or Political and social movements)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	30,000
% ownership	33.3333%
Held by	TIM S.p.A.
Eco Four Cloud Srl [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	ECO4CLOUD S.r.l. (development, production and sale of innovative products or services with high technological value
Head Office	RENDE (COSENZA-ITALY)
Currency	EUR
Share Capital	19,532
Held by	TELECOM ITALIA VENTURES S.r.l.
Italtel Group Spa [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	ITALTEL GROUP S.p.A. (investment holding company)
Head Office	SETTIMO MILANESE (MILAN- (ITALY)
Currency	EUR
Share Capital	825,695
% ownership	34.6845%
Voting rights hold in associates	1937.33%
Held by	TELECOM ITALIA FINANCE S.A.
KOPJRA S.r.l. [Member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	KOPJRA S.r.l. (development, production and sale of innovative products or services with high-tech value)
Head Office	SCHIO (VICENZA-ITALY)
Currency	EUR
Share Capital	16,207
% ownership	22.8491%
Held by	TELECOM ITALIA VENTURES S.r.l.
Movenda S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	MOVENDA S.p.A. (design, construction and diffusion of internet sites, products and computer media)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	133,333
% ownership	24.9998%
Held by	TELECOM ITALIA FINANCE SA
NordCom S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	NORDCOM S.p.A. (application service provider)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	5,000,000
% ownership	42.00%
Held by	TIM S.p.A.
Oil Project Srl [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	OILPROJECT S.r.l. (research, development, marketing and atenting of all intellectual property related to technology, information Technology and TLC)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	13,556
Held by	TELECOM ITALIA VENTURES S.r.l.
Pedius Srl [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	PEDIUS S.r.l. (implementation of specialized telecommunications applications, telecommunications services over telephone connections, VoIP services)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	159
Held by	TELECOM ITALIA VENTURES S.r.l.
Tiglio L Srl [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TIGLIO I S.r.l. (real estate management)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	5,255,704
% ownership	47.8019%
Held by	TIM S.p.A.
Tiglio I Srl [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TIGLIO II S.r.l. (IN LIQUIDATION) (real estate management)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	10,000
% ownership	49.47%
Held by	TIM S.p.A.
W.A.Y. S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	W.A.Y. S.r.l. (development and sale of geolocation products and systems for security and logistics)
Head Office	TURIN (ITALY)
Currency	EUR
Share Capital	136,383
% ownership	39.9999%
Held by	OLIVETTI S.p.A.
Wiman S.r.l [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	WIMAN S.r.l. (development, management and mplementation of platforms for social-based Wi-Fi authentications)
Head Office	MATTINATA (FOGGIA-ITALY)
Currency	EUR
Share Capital	21,568
Held by	TELECOM ITALIA VENTURES S.r.l.
CONSORZIO ANTENNA TOLENTINO [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	CONSORZIO ANTENNA TOLENTINO (installation, management and maintenance of pylons complete with workstation for device recovery)
Head Office	RECANATI (MACERATA-ITALY)
Currency	EUR
Share Capital	86,000
% ownership	16.6666%
Held by	PERSIDERA S.p.A.
CONSORZIO EMITTENTI RADIOTELEVISIVE [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	CONSORZIO EMITTENTI RADIOTELEVISIVE (broadcasting activities)
Head Office	BOLOGNA (ITALY)
Currency	EUR
Share Capital	119,309
% ownership	18.66%
Held by	PERSIDERA S.p.A.
CONSORZIO HEALTH INNOVATION HUB (IN LIQUIDATION) [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	CONSORZIO HEALTH INNOVATION HUB (IN IQUIDATION) (development of the market for systems nd services for the sector social and ealth)
Head Office	TRENTO (ITALY)
Currency	EUR
Share Capital	48,000
% ownership	12.50%
Held by	TIM S.p.A.
Dahlia TV S.p.A [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	DAHLIA TV S.p.A. (IN LIQUIDATION) (pay-per-view services)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	11,318,833
% ownership	10.08%
Held by	TIM S.p.A.
FIN.PRIV. S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	FIN.PRIV. S.r.l. (financial company)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	20,000
% ownership	14.29%
Held by	TIM S.p.A.
IGOON. S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	IGOON. S.r.l. (development of mobile platforms and pplications able to provide user with innovative solutions for organizing an haring all their digital content)
Head Office	NAPLES (ITALY)
Currency	EUR
Share Capital	16,498
% ownership	14.2805%
Held by	TELECOM ITALIA VENTURES S.r.l
INNAAS S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	INNAAS S.r.l. (design, development and sale of igh-tech software and hardware)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	108,700
% ownership	13.0046%
Held by	TELECOM ITALIA VENTURES S.r.l.
Italibiz COM Inc [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	ITALBIZ.COM Inc. internet services)
Head Office	DELAWARE (USA)
Currency	USD
Share Capital	4,721
% ownership	19.50%
Held by	TIM S.p.A.
MIX S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	MIX S.r.l. (internet service provider)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	99,000
% ownership	10.85%
Held by	TIM S.p.A.
TXN Societa a Responsabilit Limitata Semplificata [member]
Disclosure Of List Of Companies Of The Tim Group [Line Items]
Subsidiaries consolidated line-by-line	TXN Società a Responsabilità Limitata emplificata software development)
Head Office	ARIANO IRPINO (AVELLINO-ITALY)
Currency	EUR
Share Capital	333
% ownership	14.4991%
Held by	TELECOM ITALIA VENTURES S.r.l.