10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

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

For the quarterly period ended March 31, 2015

OR

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

For the transition period from                      to                     

Commission file number 1-8661

THE CHUBB CORPORATION

(Exact name of registrant as specified in its charter)

NEW JERSEY	13-2595722
(State or other jurisdiction of	(I. R. S. Employer
incorporation or organization)	Identification No.)
15 MOUNTAIN VIEW ROAD, WARREN, NEW JERSEY	07059
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code (908) 903-2000

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  þ     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  þ     NO  ¨

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

Large accelerated filer  þ	Accelerated filer  ¨	Non-accelerated filer  ¨	Smaller reporting company  ¨
		(Do not check if a smaller reporting company)

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

YES  ¨     NO  þ

The number of shares of common stock outstanding as of March 31, 2015 was 229,752,692.

THE CHUBB CORPORATION

INDEX

	Page Number
Part I. Financial Information:
Item 1 — Financial Statements:
Consolidated Statements of Income for the Three Months Ended March 31, 2015 and 2014		1
Consolidated Statements of Comprehensive Income for the Three Months Ended March 31, 2015 and 2014		2
Consolidated Balance Sheets as of March 31, 2015 and December 31, 2014		3
Consolidated Statements of Shareholders’ Equity for the Three Months Ended March 31, 2015 and 2014		4
Consolidated Statements of Cash Flows for the Three Months Ended March 31, 2015 and 2014		5
Notes to Consolidated Financial Statements		6
Item 2 — Management’s Discussion and Analysis of Financial Condition and Results of Operations		20
Item 3 — Quantitative and Qualitative Disclosures About Market Risk		52
Item 4 — Controls and Procedures		52
Part II. Other Information:
Item 1A — Risk Factors		53
Item 2 — Unregistered Sales of Equity Securities and Use of Proceeds		53
Item 6 — Exhibits		54
Signatures		54
EX-31.1
EX-31.2
EX-32.1
EX-32.2
EX-101 INSTANCE DOCUMENT
EX-101 SCHEMA DOCUMENT
EX-101 CALCULATION LINKBASE DOCUMENT
EX-101 LABELS LINKBASE DOCUMENT
EX-101 PRESENTATION LINKBASE DOCUMENT
EX-101 DEFINITION LINKBASE DOCUMENT

Page 1

Part I. FINANCIAL INFORMATION

Item 1 — Financial Statements

THE CHUBB CORPORATION

CONSOLIDATED STATEMENTS OF INCOME

THREE MONTHS ENDED MARCH 31

(in millions)

	2015			2014
Revenues
Premiums Earned	$	3,105		$	3,029
Investment Income		339			358
Other Revenues		2			3
Realized Investment Gains (Losses), Net
Total Other-Than-Temporary Impairment Losses on Investments		(23	)		—
Other Realized Investment Gains, Net		34			116
Total Realized Investment Gains, Net		11			116
Total Revenues		3,457			3,506
Losses and Expenses
Losses and Loss Expenses		1,920			1,845
Amortization of Deferred Policy Acquisition Costs		626			622
Other Insurance Operating Costs and Expenses		347			356
Investment Expenses		12			11
Other Expenses		4			5
Corporate Expenses		66			64
Total Losses and Expenses		2,975			2,903
Income Before Federal and Foreign Income Tax		482			603
Federal and Foreign Income Tax		107			154
Net Income	$	375		$	449
Net Income Per Share
Basic	$	1.61		$	1.81
Diluted		1.60			1.80
Dividends Declared Per Share		.57			.50

See Notes to Consolidated Financial Statements.

Page 2

THE CHUBB CORPORATION

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

THREE MONTHS ENDED MARCH 31

(in millions)

	2015			2014
Net Income	$	375		$	449
Other Comprehensive Income (Loss), Net of Tax
Change in Unrealized Appreciation of Investments		109			235
Change in Postretirement Benefit Costs Not Yet Recognized in Net Income		17			6
Foreign Currency Translation Losses		(176	)		(19	)
		(50	)		222
Comprehensive Income	$	325		$	671

See Notes to Consolidated Financial Statements.

Page 3

THE CHUBB CORPORATION

CONSOLIDATED BALANCE SHEETS

(in millions)

	March 31 2015			December 31 2014
Assets
Invested Assets
Short Term Investments	$	1,220		$	1,318
Fixed Maturities (cost $36,483 and $36,958)		38,457			38,780
Equity Securities (cost $1,074 and $1,089)		1,964			1,964
Other Invested Assets		1,408			1,423
TOTAL INVESTED ASSETS		43,049			43,485
Cash		52			47
Accrued Investment Income		406			410
Premiums Receivable		2,434			2,560
Reinsurance Recoverable on Unpaid Losses and Loss Expenses		1,583			1,639
Prepaid Reinsurance Premiums		249			256
Deferred Policy Acquisition Costs		1,280			1,284
Goodwill		467			467
Other Assets		1,332			1,138
TOTAL ASSETS	$	50,852		$	51,286
Liabilities
Unpaid Losses and Loss Expenses	$	22,515		$	22,678
Unearned Premiums		6,463			6,581
Long Term Debt		3,300			3,300
Dividend Payable to Shareholders		133			117
Deferred Income Tax		50			15
Accrued Expenses and Other Liabilities		2,229			2,299
TOTAL LIABILITIES		34,690			34,990
Shareholders’ Equity
Common Stock - $1 Par Value; 371,980,460 Shares		372			372
Paid-In Surplus		135			171
Retained Earnings		23,762			23,520
Accumulated Other Comprehensive Income		1,060			1,110
Treasury Stock, at Cost - 142,227,768 and 139,551,071 Shares		(9,167	)		(8,877	)
TOTAL SHAREHOLDERS’ EQUITY		16,162			16,296
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$	50,852		$	51,286

See Notes to Consolidated Financial Statements.

Page 4

THE CHUBB CORPORATION

CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY

THREE MONTHS ENDED MARCH 31

(in millions)

	2015			2014
Common Stock
Balance, Beginning and End of Period	$	372		$	372
Paid-In-Surplus
Balance, Beginning of Year		171			171
Changes Related to Stock-Based Employee Compensation (includes tax benefit of $3 and $14)		(36	)		(63	)
Balance, End of Period		135			108
Retained Earnings
Balance, Beginning of Year		23,520			21,902
Net Income		375			449
Dividends Declared (per share $.57 and $.50)		(133	)		(124	)
Balance, End of Period		23,762			22,227
Accumulated Other Comprehensive Income
Unrealized Appreciation of Investments Including Unrealized Other-Than-Temporary Impairment Losses
Balance, Beginning of Year		1,753			1,225
Change During Period, Net of Tax		109			235
Balance, End of Period		1,862			1,460
Postretirement Benefit Costs Not Yet Recognized in Net Income
Balance, Beginning of Year		(589	)		(253	)
Change During Period, Net of Tax		17			6
Balance, End of Period		(572	)		(247	)
Foreign Currency Translation Gains (Losses)
Balance, Beginning of Year		(54	)		63
Change During Period, Net of Tax		(176	)		(19	)
Balance, End of Period		(230	)		44
Accumulated Other Comprehensive Income, End of Period		1,060			1,257
Treasury Stock, at Cost
Balance, Beginning of Year		(8,877	)		(7,383	)
Repurchase of Shares		(326	)		(409	)
Shares Issued Under Stock-Based Employee Compensation Plans		36			54
Balance, End of Period		(9,167	)		(7,738	)
TOTAL SHAREHOLDERS’ EQUITY	$	16,162		$	16,226

See Notes to Consolidated Financial Statements.

Page 5

THE CHUBB CORPORATION

CONSOLIDATED STATEMENTS OF CASH FLOWS

THREE MONTHS ENDED MARCH 31

(in millions)

	2015			2014
Cash Flows from Operating Activities
Net Income	$	375		$	449
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities
Increase in Unpaid Losses and Loss Expenses, Net		260			51
Increase in Unearned Premiums, Net		1			33
Amortization of Premiums and Discounts on Fixed Maturities		54			46
Depreciation		12			14
Realized Investment Gains, Net		(11	)		(116	)
Other, Net		(161	)		(105	)
Net Cash Provided by Operating Activities		530			372
Cash Flows from Investing Activities
Proceeds from Fixed Maturities
Sales		1,436			379
Maturities, Calls and Redemptions		820			957
Proceeds from Sales of Equity Securities		29			101
Purchases of Fixed Maturities		(2,421	)		(1,810	)
Purchases of Equity Securities		(24	)		(89	)
Investments in Other Invested Assets, Net		17			98
Decrease in Short Term Investments, Net		82			417
Change in Receivable or Payable from Security Transactions Not Settled, Net		5			105
Purchases of Property and Equipment, Net		(18	)		(10	)
Other, Net		—			(3	)
Net Cash Provided by (Used in) Investing Activities		(74	)		145
Cash Flows from Financing Activities
Decrease in Funds Held Under Deposit Contracts		(1	)		(1	)
Proceeds from Issuance of Common Stock Under Stock-Based Employee Compensation Plans		5			14
Repurchase of Shares		(338	)		(415	)
Dividends Paid to Shareholders		(117	)		(110	)
Net Cash Used in Financing Activities		(451	)		(512	)
Net Increase in Cash		5			5
Cash at Beginning of Year		47			52
Cash at End of Period	$	52		$	57

See Notes to Consolidated Financial Statements.

Page 6

THE CHUBB CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1) General

The accompanying condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) and include the accounts of The Chubb Corporation (Chubb) and its subsidiaries (collectively, the Corporation). Significant intercompany transactions have been eliminated in consolidation.

The amounts included in this report are unaudited but include those adjustments, consisting of normal recurring items, that management considers necessary for a fair presentation. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes in the Notes to Consolidated Financial Statements included in Chubb’s Annual Report on Form 10-K for the year ended December 31, 2014.

2) Accounting Pronouncements Not Yet Adopted

In February 2015, the Financial Accounting Standards Board issued updated guidance that amends certain aspects of the current consolidation accounting guidance. In particular, the new guidance modifies the evaluation of whether limited partnerships and similar legal entities are variable interest entities (VIEs) or voting interest entities and eliminates the presumption that a general partner should consolidate a limited partnership. The new guidance would be effective for the Corporation for the year beginning January 1, 2016. The Corporation is in the process of assessing the effect, if any, that the implementation of this guidance will have on its financial position and results of operations.

Page 7

3) Invested Assets

(a) The amortized cost and fair value of fixed maturities and equity securities were as follows:

	March 31, 2015
	Amortized Cost		Gross Unrealized Appreciation		Gross Unrealized Depreciation		Fair Value
	(in millions)
Fixed maturities
Tax exempt	$	19,260	$	1,179	$	24	$	20,415
Taxable
U.S. government and government agency and authority obligations		1,460		59		1		1,518
Corporate bonds		8,756		402		19		9,139
Foreign government and government agency obligations		5,844		335		2		6,177
Residential mortgage-backed securities		175		20		1		194
Commercial mortgage-backed securities		988		27		1		1,014
		17,223		843		24		18,042
Total fixed maturities	$	36,483	$	2,022	$	48	$	38,457
Equity securities	$	1,074	$	900	$	10	$	1,964

	December 31, 2014
	Amortized Cost		Gross Unrealized Appreciation		Gross Unrealized Depreciation		Fair Value
	(in millions)
Fixed maturities
Tax exempt	$	18,614	$	1,174	$	16	$	19,772
Taxable
U.S. government and government agency and authority obligations		1,962		46		1		2,007
Corporate bonds		8,741		327		40		9,028
Foreign government and government agency obligations		6,380		295		3		6,672
Residential mortgage-backed securities		192		20		1		211
Commercial mortgage-backed securities		1,069		22		1		1,090
		18,344		710		46		19,008
Total fixed maturities	$	36,958	$	1,884	$	62	$	38,780
Equity securities	$	1,089	$	894	$	19	$	1,964

Page 8

The fair value and amortized cost of fixed maturities at March 31, 2015 by contractual maturity were as follows:

	Fair Value		Amortized Cost
	(in millions)
Due in one year or less	$	2,460	$	2,438
Due after one year through five years		12,329		11,794
Due after five years through ten years		13,321		12,449
Due after ten years		9,139		8,639
		37,249		35,320
Residential mortgage-backed securities		194		175
Commercial mortgage-backed securities		1,014		988
	$	38,457	$	36,483

Actual maturities could differ from contractual maturities because borrowers may have the right to call or prepay obligations.

The Corporation’s equity securities comprise a diversified portfolio of primarily U.S. publicly-traded common stocks.

The Corporation is involved in the normal course of business with VIEs primarily as a passive investor in residential mortgage-backed securities, commercial mortgage-backed securities and private equity limited partnerships issued by third party VIEs. The Corporation is not the primary beneficiary of these VIEs. The Corporation’s maximum exposure to loss with respect to these investments is limited to the investment carrying values included in the Corporation’s consolidated balance sheet and any unfunded partnership commitments.

(b) The components of unrealized appreciation or depreciation, including unrealized other-than-temporary impairment losses, of investments carried at fair value were as follows:

	March 31 2015		December 31 2014
	(in millions)
Fixed maturities
Gross unrealized appreciation	$	2,022	$	1,884
Gross unrealized depreciation		48		62
		1,974		1,822
Equity securities
Gross unrealized appreciation		900		894
Gross unrealized depreciation		10		19
		890		875
		2,864		2,697
Deferred income tax liability		1,002		944
	$	1,862	$	1,753

Page 9

The following table summarizes, for all investment securities in an unrealized loss position at March 31, 2015, the aggregate fair value and gross unrealized depreciation, including unrealized other-than-temporary impairment losses, by investment category and length of time that individual securities have continuously been in an unrealized loss position.

	Less Than 12 Months				12 Months or More				Total
	Fair Value		Gross Unrealized Depreciation		Fair Value		Gross Unrealized Depreciation		Fair Value		Gross Unrealized Depreciation
	(in millions)
Fixed maturities
Tax exempt	$	1,103	$	9	$	219	$	15	$	1,322	$	24
Taxable
U.S. government and government agency and authority obligations		170		1		10		—		180		1
Corporate bonds		474		15		311		4		785		19
Foreign government and government agency obligations		344		2		77		—		421		2
Residential mortgage-backed securities		—		—		6		1		6		1
Commercial mortgage-backed securities		14		—		83		1		97		1
		1,002		18		487		6		1,489		24
Total fixed maturities		2,105		27		706		21		2,811		48
Equity securities		59		7		3		3		62		10
	$	2,164	$	34	$	709	$	24	$	2,873	$	58

At March 31, 2015, approximately 580 individual fixed maturities and 15 individual equity securities were in an unrealized loss position. The Corporation does not have the intent to sell and it is not more likely than not that the Corporation will be required to sell these fixed maturities before the securities recover to their amortized cost value. In addition, the Corporation believes that none of the declines in the fair values of these fixed maturities relate to credit losses. The Corporation has the intent and ability to hold the equity securities in an unrealized loss position for a period of time sufficient to allow for the recovery of cost. The Corporation believes that none of the declines in the fair value of these fixed maturities and equity securities were other than temporary at March 31, 2015.

Page 10

The following table summarizes, for all investment securities in an unrealized loss position at December 31, 2014, the aggregate fair value and gross unrealized depreciation, including unrealized other-than-temporary impairment losses, by investment category and length of time that individual securities have continuously been in an unrealized loss position.

	Less Than 12 Months				12 Months or More				Total
	Fair Value		Gross Unrealized Depreciation		Fair Value		Gross Unrealized Depreciation		Fair Value		Gross Unrealized Depreciation
	(in millions)
Fixed maturities
Tax exempt	$	422	$	3	$	305	$	13	$	727	$	16
Taxable
U.S. government and government agency and authority obligations		936		1		36		—		972		1
Corporate bonds		1,327		23		888		17		2,215		40
Foreign government and government agency obligations		318		1		207		2		525		3
Residential mortgage-backed securities		—		—		7		1		7		1
Commercial mortgage-backed securities		106		—		67		1		173		1
		2,687		25		1,205		21		3,892		46
Total fixed maturities		3,109		28		1,510		34		4,619		62
Equity securities		67		11		11		8		78		19
	$	3,176	$	39	$	1,521	$	42	$	4,697	$	81

The change in unrealized appreciation or depreciation of investments carried at fair value, including the change in unrealized other-than-temporary impairment losses, was as follows:

	Three Months Ended March 31
	2015		2014
	(in millions)
Change in unrealized appreciation of fixed maturities	$	152	$	362
Change in unrealized appreciation of equity securities		15		(1	)
		167		361
Deferred income tax		58		126
	$	109	$	235

Page 11

(c) Realized investment gains and losses were as follows:

	Three Months Ended March 31
	2015			2014
	(in millions)
Fixed maturities
Gross realized gains	$	13		$	8
Gross realized losses		(5	)		(11	)
Other-than-temporary impairment losses		(1	)		—
		7			(3	)
Equity securities
Gross realized gains		16			66
Other-than-temporary impairment losses		(22	)		—
		(6	)		66
Other invested assets		10			53
	$	11		$	116

(d) As of March 31, 2015 and December 31, 2014, fixed maturities still held by the Corporation for which a portion of their other-than-temporary impairment losses were recognized in other comprehensive income had cumulative credit-related losses of $17 million and $18 million, respectively, recognized in net income.

4) Comprehensive Income

Comprehensive income is defined as all changes in shareholders’ equity, except those arising from transactions with shareholders. Comprehensive income includes net income and other comprehensive income or loss, which for the Corporation consists of changes in unrealized appreciation or depreciation of investments carried at fair value, changes in unrealized other-than-temporary impairment losses of fixed maturities, changes in postretirement benefit costs not yet recognized in net income and changes in foreign currency translation gains or losses.

Page 12

The components of other comprehensive income or loss were as follows:

	Three Months Ended March 31, 2015
	Before Tax			Income Tax			Net of Tax
	(in millions)
Net unrealized holding gains arising during the period	$	168		$	58		$	110
Reclassification adjustment for net realized gains included in net income		1			—			1
Net unrealized gains recognized in other comprehensive income		167			58			109
Postretirement benefit gain not yet recognized in net income arising during the year		9			3			6
Reclassification adjustment for the amortization of net actuarial loss and prior service cost included in net income (a)		(16	)		(5	)		(11	)
Net change in postretirement benefit costs not yet recognized in net income		25			8			17
Foreign currency translation losses		(270	)		(94	)		(176	)
Total other comprehensive loss	$	(78	)	$	(28	)	$	(50	)

	Three Months Ended March 31, 2014
	Before Tax			Income Tax			Net of Tax
	(in millions)
Net unrealized holding gains arising during the period	$	424		$	148		$	276
Reclassification adjustment for net realized gains included in net income		63			22			41
Net unrealized gains recognized in other comprehensive income		361			126			235
Reclassification adjustment for the amortization of net actuarial loss and prior service cost included in net income (a)		(9	)		(3	)		(6	)
Net change in postretirement benefit costs not yet recognized in net income		9			3			6
Foreign currency translation losses		(28	)		(9	)		(19	)
Total other comprehensive income	$	342		$	120		$	222

(a) Postretirement benefit costs recognized in net income during the period are included among several of the loss and expense components presented in the consolidated statements of income.

Page 13

5) Segments Information

The principal business of the Corporation is the sale of property and casualty insurance. The profitability of the property and casualty insurance business depends on the results of both underwriting operations and investments, which are viewed as two distinct operations. The underwriting operations are managed and evaluated separately from the investment function.

The property and casualty insurance subsidiaries underwrite most lines of property and casualty insurance. Underwriting operations consist of four separate business units: personal insurance, commercial insurance, specialty insurance and reinsurance assumed. The personal segment targets the personal insurance market. The personal classes include automobile, homeowners and other personal coverages. The commercial segment includes those classes of business that are generally available in broad markets and are of a more commodity nature. Commercial classes include multiple peril, casualty, workers’ compensation and property and marine. The specialty segment includes those classes of business that are available in more limited markets since they require specialized underwriting and claim settlement. Specialty classes include professional liability coverages and surety. The reinsurance assumed business has been in runoff since the transfer of the ongoing reinsurance assumed business to a reinsurance company in 2005.

Corporate and other includes investment income earned on corporate invested assets, corporate expenses and the results of the Corporation’s non-insurance subsidiaries.

Page 14

Revenues and income before income tax of each operating segment were as follows:

	Three Months Ended March 31
	2015			2014
	(in millions)
Revenues
Property and casualty insurance
Premiums earned
Personal insurance	$	1,113		$	1,076
Commercial insurance		1,342			1,300
Specialty insurance		650			653
Total insurance		3,105			3,029
Investment income		332			351
Total property and casualty insurance		3,437			3,380
Corporate and other		9			10
Realized investment gains, net		11			116
Total revenues	$	3,457		$	3,506
Income (loss) before income tax
Property and casualty insurance
Underwriting
Personal insurance	$	(30	)	$	2
Commercial insurance		91			111
Specialty insurance		127			82
Total insurance		188			195
Increase in deferred policy acquisition costs		17			13
Underwriting income		205			208
Investment income		321			341
Other income (charges)		7			(2	)
Total property and casualty insurance		533			547
Corporate and other		(62	)		(60	)
Realized investment gains, net		11			116
Total income before income tax	$	482		$	603

Page 15

6) Fair Values of Financial Instruments

Fair values of financial instruments are determined by management using valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs. Fair values are generally measured using quoted prices in active markets for identical assets or liabilities or other inputs, such as quoted prices for similar assets or liabilities, that are observable, either directly or indirectly. In those instances where observable inputs are not available, fair values are measured using unobservable inputs for the asset or liability. Unobservable inputs reflect the Corporation’s own assumptions about the assumptions that market participants would use in pricing the asset or liability and are developed based on the best information available in the circumstances. Fair value estimates derived from unobservable inputs are affected by the assumptions used, including the discount rates and the estimated amounts and timing of future cash flows. The derived fair value estimates cannot be substantiated by comparison to independent markets and are not necessarily indicative of the amounts that would be realized in a current market exchange. Certain financial instruments, particularly insurance contracts, are excluded from fair value disclosure requirements.

The methods and assumptions used to estimate the fair values of financial instruments are as follows:

(i) The carrying value of short term investments approximates fair value due to the short maturities of these investments.

(ii) Fair values of fixed maturities are determined by management, utilizing prices obtained from a third party, nationally recognized pricing service or, in the case of securities for which prices are not provided by a pricing service, from third party brokers. For fixed maturities that have quoted prices in active markets, market quotations are provided. For fixed maturities that do not trade on a daily basis, the pricing service and brokers provide fair value estimates using a variety of inputs including, but not limited to, benchmark yields, reported trades, broker/dealer quotes, issuer spreads, bids, offers, reference data, prepayment rates and measures of volatility. Management reviews on an ongoing basis the reasonableness of the methodologies used by the relevant pricing service and brokers. In addition, management, using the prices received for the securities from the pricing service and brokers, determines the aggregate portfolio price performance and reviews it against applicable indices. If management believes that significant discrepancies exist, it will discuss these with the relevant pricing service or broker to resolve the discrepancies.

(iii) Fair values of equity securities are determined by management, utilizing quoted market prices.

(iv) Fair values of long term debt issued by Chubb are determined by management, utilizing prices obtained from a third party, nationally recognized pricing service.

Page 16

The carrying values and fair values of financial instruments were as follows:

	March 31, 2015				December 31, 2014
	Carrying Value		Fair Value		Carrying Value		Fair Value
	(in millions)
Assets
Invested assets
Short term investments	$	1,220	$	1,220	$	1,318	$	1,318
Fixed maturities		38,457		38,457		38,780		38,780
Equity securities		1,964		1,964		1,964		1,964
Liabilities
Long term debt		3,300		4,046		3,300		4,013

At March 31, 2015 and December 31, 2014, a pricing service provided fair value amounts for approximately 99% of the Corporation’s fixed maturities. The prices obtained from a pricing service and brokers generally are non-binding, but are reflective of current market transactions in the applicable financial instruments.

At March 31, 2015 and December 31, 2014, the Corporation held an insignificant amount of financial instruments in its investment portfolio for which a lack of market liquidity impacted the determination of fair value.

The fair value hierarchy prioritizes the inputs to valuation techniques used to measure fair value into three broad levels as follows:

Level 1 – Unadjusted quoted prices in active markets for identical financial instruments.

Level 2 – Other inputs that are observable for the financial instrument, either directly or indirectly.

Level 3 – Significant unobservable inputs.

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The fair value of financial instruments categorized based upon the lowest level of input that was significant to the fair value measurement was as follows:

	March 31, 2015
	Level 1		Level 2		Level 3		Total
	(in millions)
Assets
Short term investments	$	192	$	1,028	$	—	$	1,220
Fixed maturities
Tax exempt		—		20,413		2		20,415
Taxable
U.S. government and government agency and authority obligations		—		1,518		—		1,518
Corporate bonds		—		8,954		185		9,139
Foreign government and government agency obligations		—		6,169		8		6,177
Residential mortgage-backed securities		—		193		1		194
Commercial mortgage-backed securities		—		1,014		—		1,014
		—		17,848		194		18,042
Total fixed maturities		—		38,261		196		38,457
Equity securities		1,958		—		6		1,964
	$	2,150	$	39,289	$	202	$	41,641
Liabilities
Long term debt	$	—	$	4,046	$	—	$	4,046

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	December 31, 2014
	Level 1		Level 2		Level 3		Total
	(in millions)
Assets
Short term investments	$	206	$	1,112	$	—	$	1,318
Fixed maturities
Tax exempt		—		19,769		3		19,772
Taxable
U.S. government and government agency and authority obligations		—		2,007		—		2,007
Corporate bonds		—		8,912		116		9,028
Foreign government and government agency obligations		—		6,663		9		6,672
Residential mortgage-backed securities		—		210		1		211
Commercial mortgage-backed securities		—		1,090		—		1,090
		—		18,882		126		19,008
Total fixed maturities		—		38,651		129		38,780
Equity securities		1,958		—		6		1,964
	$	2,164	$	39,763	$	135	$	42,062
Liabilities
Long term debt	$	—	$	4,013	$	—	$	4,013

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7) Earnings Per Share

The following table sets forth the computation of basic and diluted earnings per share:

	Three Months Ended March 31
	2015		2014
	(in millions, except for per share amounts)
Basic earnings per share:
Net income	$	375	$	449
Weighted average shares outstanding		233.5		248.6
Basic earnings per share	$	1.61	$	1.81
Diluted earnings per share:
Net income	$	375	$	449
Weighted average shares outstanding		233.5		248.6
Additional shares from assumed issuance of shares under stock-based compensation awards		.7		.6
Weighted average shares and potential shares assumed outstanding for computing diluted earnings per share		234.2		249.2
Diluted earnings per share	$	1.60	$	1.80

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Item 2 — Management’s Discussion and Analysis of Financial Condition and Results of Operations

Management’s Discussion and Analysis of Financial Condition and Results of Operations addresses the financial condition of the Corporation as of March 31, 2015 compared with December 31, 2014 and the results of operations for the quarters ended March 31, 2015 and 2014. This discussion should be read in conjunction with the condensed consolidated financial statements and related notes contained in this report and the consolidated financial statements and related notes and management’s discussion and analysis of financial condition and results of operations included in Chubb’s Annual Report on Form 10-K for the year ended December 31, 2014.

Cautionary Statement Regarding Forward-Looking Information

Certain statements in this document are “forward-looking statements” as that term is defined in the Private Securities Litigation Reform Act of 1995 (PSLRA). These forward-looking statements are made pursuant to the safe harbor provisions of the PSLRA and include statements regarding our loss reserve and reinsurance recoverable estimates; market conditions affecting us and our competitors in 2015, including premium volume, rate trends, pricing and competition; the cost of our property reinsurance program in 2015; property and casualty investment income during 2015; cash flows generated by our investments; currency rate fluctuations; the repurchase of common stock under our share repurchase program; and our financial position, capital adequacy and funding of liquidity needs. Forward-looking statements frequently can be identified by words such as “believe,” “expect,” “anticipate,” “intend,” “plan,” “will,” “may,” “should,” “could,” “would,” “likely,” “estimate,” “predict,” “potential,” “continue,” or other similar expressions. Forward-looking statements are made based upon management’s current expectations and beliefs concerning trends and future developments and their potential effects on us. These statements are not guarantees of future performance. Actual results may differ materially from those suggested by forward-looking statements as a result of risks and uncertainties, which include, among others, those discussed or identified in our Annual Report on Form 10-K for the year ended December 31, 2014 and from time to time in our other public filings with the Securities and Exchange Commission and those associated with:

• global political, economic and market conditions, particularly in the jurisdictions in which we operate and/or invest, including:

— changes in credit ratings, interest rates, market credit spreads and the performance of the financial markets;

— currency fluctuations;

— the effects of inflation;

— changes in domestic and foreign laws, regulations and taxes;

— changes in competition and pricing environments;

— regional or general changes in asset valuations;

— the inability to reinsure certain risks economically; and

— changes in the litigation environment;

• the effects of the outbreak or escalation of war or hostilities;

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• the occurrence of terrorist attacks, including any nuclear, biological, chemical or radiological events;

• premium pricing and profitability or growth estimates overall or by lines of business or geographic area, and related expectations with respect to the timing and terms of any required regulatory approvals;

• adverse changes in loss cost trends;

• our ability to retain existing business and attract new business at acceptable rates;

• our expectations with respect to cash flow and investment income and with respect to other income;

• the adequacy of our loss reserves, including:

— our expectations relating to reinsurance recoverables;

— the willingness of parties, including us, to settle disputes;

— developments in judicial decisions or regulatory or legislative actions relating to coverage and liability, in particular, for asbestos, toxic waste and other mass tort claims;

— development of new theories of liability;

— our estimates relating to ultimate asbestos liabilities; and

— the impact from the bankruptcy protection sought by various asbestos producers and other related businesses;

• the availability and cost of reinsurance coverage;

• the occurrence of significant weather-related or other natural or human-made disasters, particularly in locations where we have concentrations of risk or changes to our estimates (or the assessments of rating agencies and other third parties) of our potential exposure to such events;

• the impact of economic factors on companies on whose behalf we have issued surety bonds, and in particular, on those companies that file for bankruptcy or otherwise experience deterioration in creditworthiness;

• the effects of disclosures by, and investigations of, companies we insure, particularly with respect to our lines of business that have a longer time span, or tail, between the incidence of a loss and the settlement of the claim;

• the impact of legislative, regulatory, judicial and similar developments on companies we insure, particularly with respect to our longer tail lines of business;

• the impact of legislative, regulatory, judicial and similar developments on our business, including those relating to insurance industry reform, terrorism, catastrophes, the financial markets, solvency standards, capital requirements, accounting guidance and taxation;

• any downgrade in our claims-paying, financial strength or other credit ratings;

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• the ability of our subsidiaries to pay us dividends;

• our ability and the ability of our third party vendors to maintain the availability of systems and safeguard the security of our data in the event of a disaster or other information security incident;

• our plans to repurchase shares of our common stock, including as a result of changes in:

— our financial position and financial results;

— our capital position and/or capital adequacy levels required to maintain our existing ratings from independent rating agencies;

— our share price;

— investment opportunities;

— opportunities to profitably grow our property and casualty insurance business; and

— corporate and regulatory requirements; and

• our ability to implement management’s strategic plans and initiatives.

Chubb assumes no obligation to update any forward-looking statement set forth in this document, which speak as of the date hereof.

Critical Accounting Estimates and Judgments

The consolidated financial statements include amounts based on informed estimates and judgments of management for transactions that are not yet complete. Such estimates and judgments affect the reported amounts in the financial statements. Those estimates and judgments that were most critical to the preparation of the financial statements involved the determination of loss reserves and the recoverability of related reinsurance recoverables and the evaluation of whether a decline in value of any investment is temporary or other than temporary. These estimates and judgments, which are discussed in Item 7 of our Annual Report on Form 10-K for the year ended December 31, 2014 as supplemented within the following analysis of our results of operations, require the use of assumptions about matters that are highly uncertain and therefore are subject to change as facts and circumstances develop. If different estimates and judgments had been applied, materially different amounts might have been reported in the financial statements.

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Overview

The following highlights do not address all of the matters covered in the other sections of Management’s Discussion and Analysis of Financial Condition and Results of Operations or contain all of the information that may be important to Chubb’s shareholders or the investing public. This overview should be read in conjunction with the other sections of Management’s Discussion and Analysis of Financial Condition and Results of Operations.

• Net income was $375 million in the first quarter of 2015 compared with $449 million in the same period of 2014. The lower net income in the first quarter of 2015 compared with the same period of 2014 was due primarily to lower net realized investment gains.

• Operating income, which we define as net income excluding realized investment gains and losses after tax, was $367 million in the first quarter of 2015 compared with $374 million in the same period of 2014. The slightly lower operating income in the first quarter of 2015 was due primarily to lower property and casualty investment income. Underwriting income in our property and casualty insurance business was essentially unchanged in the first quarter of 2015 compared with the same period of 2014. Management uses operating income, a non-GAAP financial measure, among other measures, to evaluate its performance because the realization of investment gains and losses in any period could be discretionary as to timing and can fluctuate significantly, which could distort the analysis of operating trends.

• Underwriting results were profitable in the first quarter of 2015 and 2014. The combined loss and expense ratio was 93.9% in the first quarter of 2015 compared with 93.2% in the same period of 2014. The 0.7 of a percentage point increase in the combined loss and expense ratio in the first quarter of 2015 compared with the same period of 2014 was due to a lower amount of favorable prior year loss development and a higher impact of catastrophes, largely offset by a lower current accident year loss ratio excluding catastrophes. The impact of catastrophes accounted for 8.1 percentage points of the combined ratio in the first quarter of 2015 compared with 6.6 percentage points in the same period of 2014.

• During the first quarter of 2015, we estimate that we experienced overall favorable development of about $110 million on net loss reserves established as of the previous year end. We estimate that during the first quarter of 2014, we experienced overall favorable prior year loss development of about $160 million. In the first quarter of both years we experienced favorable prior year loss development in each segment of our insurance business, but more so in our commercial and specialty insurance segments.

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• Foreign currency translation had a negative effect on growth in net premiums written outside the United States in the first quarter of 2015, reflecting the impact of the stronger U.S. dollar relative to several currencies in which we wrote business in the first quarter of 2015 compared to the same period of 2014. In the first quarter of 2015, net premiums written outside the United States represented 26% of our total net premiums written. Total net premiums written increased by 1% in the first quarter of 2015 compared with the same period of 2014. Total net premiums written excluding the effect of foreign currency translation increased by 4% in the first quarter of 2015. Net premiums written in the United States increased by 4% in the first quarter of 2015. Net premiums written outside the United States decreased by 5% in the first quarter of 2015, when measured in U.S. dollars. Excluding the effect of foreign currency translation, such premiums increased by 6% in the first quarter of 2015. Management uses growth in net premiums written excluding the effect of foreign currency translation, a non-GAAP financial measure, to evaluate the trends in net premiums written, exclusive of the effect of fluctuations in exchange rates between the U.S. dollar and the foreign currencies in which business is transacted. The impact of foreign currency translation is excluded as exchange rates may fluctuate significantly and the effect of fluctuations could distort the analysis of trends. When excluding the effect of foreign currency translation on growth, management uses the current period average exchange rates to translate both the current period and the prior period foreign currency denominated net premiums written amounts.

• Property and casualty investment income before taxes decreased by 6% in the first quarter of 2015 compared with the same period of 2014. Property and casualty investment income after tax decreased by 5% in the first quarter of 2015 compared with the same period of 2014. The decreases were due to a decline in the average yield on our investment portfolio and, to a lesser extent, the effect of foreign currency translation. Management uses property and casualty investment income after tax, a non-GAAP financial measure, to evaluate its investment results because it reflects the impact of any change in the proportion of tax exempt investment income to total investment income and is therefore more meaningful for analysis purposes than investment income before income tax.

• Net realized investment gains before tax were $11 million ($8 million after tax) in the first quarter of 2015 compared with $116 million ($75 million after tax) in the same period of 2014. The net realized investment gains in the first quarter of 2015 were primarily related to investments in limited partnerships, which generally are reported on a one quarter lag, and sales of fixed maturities. The net realized investment gains in the first quarter of 2014 were primarily related to investments in limited partnerships and sales of equity securities.

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A summary of our consolidated net income is as follows:

	Quarter Ended March 31
	2015			2014
	(in millions)
Property and casualty insurance	$	533		$	547
Corporate and other		(62	)		(60	)
Consolidated operating income before income tax		471			487
Federal and foreign income tax		104			113
Consolidated operating income		367			374
Realized investment gains after income tax		8			75
Consolidated net income	$	375		$	449

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Property and Casualty Insurance

A summary of the results of operations of our property and casualty insurance business is as follows:

	Quarter Ended March 31
	2015			2014
	(in millions)
Underwriting
Net premiums written	$	3,106		$	3,062
Increase in unearned premiums		(1	)		(33	)
Premiums earned		3,105			3,029
Losses and loss expenses		1,920			1,845
Operating costs and expenses		987			979
Increase in deferred policy acquisition costs		(17	)		(13	)
Dividends to policyholders		10			10
Underwriting income		205			208
Investments
Investment income before expenses		332			351
Investment expenses		11			10
Investment income		321			341
Other income (charges)		7			(2	)
Property and casualty income before tax	$	533		$	547
Property and casualty investment income after tax	$	264		$	277

Property and casualty income before tax was lower in the first quarter of 2015 compared with the same period of 2014, due to lower investment income. The lower investment income in the first quarter of 2015 compared with the same period of 2014 was due to a decline in the average yield on our investment portfolio and, to a lesser extent, the effect of foreign currency translation. Underwriting income was essentially unchanged in the first quarter of 2015 compared with the same period of 2014, as a lower amount of favorable prior year loss development and a higher impact of catastrophes was largely offset by a lower current accident year loss ratio excluding catastrophes.

The profitability of our property and casualty insurance business depends on the results of both our underwriting and investment operations. We view these as two distinct operations since the underwriting functions are managed separately from the investment function. Accordingly, in assessing our performance, we evaluate underwriting results separately from investment results.

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Underwriting Results

We evaluate the underwriting results of our property and casualty insurance business in the aggregate and for each of our business units.

Net Premiums Written

Net premiums written were $3.1 billion in the first quarter of 2015 and 2014. Net premiums written by business unit were as follows:

	Quarter Ended March 31
	2015		2014		% Increase
	(in millions)
Personal insurance	$	1,036	$	1,013		2	%
Commercial insurance		1,449		1,425		2
Specialty insurance		621		624		—
Total insurance		3,106		3,062		1
Reinsurance assumed		—		—		*
Total	$	3,106	$	3,062		1

* The change in net premiums written is not presented for this business unit since it is in runoff.

Net premiums written increased by 1% in the first quarter of 2015 compared with the same period of 2014 as a result of growth in premiums written in the United States. Net premiums written excluding the effect of foreign currency translation increased by 4% in the first quarter of 2015. Net premiums written in the United States, which in the first quarter of 2015 represented 74% of our total net premiums written, increased by 4%. Net premiums written outside the United States decreased by 5% in the first quarter of 2015, when measured in U.S. dollars. Excluding the effect of foreign currency translation, net premiums written outside the United States increased by 6%. Foreign currency translation had a negative effect on growth in net premiums written outside the United States in the first quarter of 2015, reflecting the impact of the stronger U.S. dollar relative to several currencies in which we wrote business in the first quarter of 2015 compared to the same period of 2014.

We classify business as written inside or outside the United States based on the location of the risks associated with the underlying policies. The method of determining location of risk varies by class of business. Location of risk for property classes is typically based on the physical location of the covered property, while location of risk for liability classes may be based on the main location of the insured, or in the case of the workers’ compensation class, the primary work location of the covered employee.

Net premiums written in the United States grew modestly in each segment of our business in the first quarter of 2015 compared with the same period of 2014. Growth in the United States in our personal insurance segment was attributable to higher insured exposures, higher rates upon renewal, strong retention of existing business, and new business. Growth in the United States in our commercial insurance segment and our professional liability business, which is the predominant component of our specialty insurance segment, reflected high retention of existing business, new business, as well as renewal rate increases.

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Average renewal rates in the United States in our personal insurance segment were up slightly in the first quarter of 2015 compared with expiring rates. The amounts of coverage purchased or the insured exposures, both of which are bases upon which we calculate the premiums we charge, were up modestly in the United States in the first quarter of 2015. Retention levels in our personal insurance segment in the United States remained strong in the first quarter of 2015. The level of new business in the United States in our personal insurance business in the first quarter of 2015 was similar to the first quarter of 2014.

Average renewal rates in the United States in the first quarter of 2015 were up slightly compared with expiring rates in our commercial insurance segment and up modestly compared with expiring rates in our professional liability business. On average, the amounts of coverage purchased or the insured exposures upon renewal were flat in our commercial insurance segment and up slightly in our professional liability business in the United States in the first quarter of 2015. We continued to retain a high percentage of our existing commercial insurance and professional liability business in the United States in the first quarter of 2015. Retention levels in the first quarter of 2015 were modestly higher in both our commercial insurance segment and professional liability business compared with the same period of 2014. As portions of our business have approached rate adequacy due to pricing and underwriting actions over the past several years, the level of renewal rate increases has moderated and we have achieved higher retention levels. The level of new business in the United States was up in both our commercial insurance segment and professional liability business in the first quarter of 2015 compared with the same period of 2014.

The decrease in net premiums written outside the United States in the first quarter of 2015 compared with the same period of 2014 reflected a modest decrease in our personal insurance and commercial insurance segments and a more significant decrease in our specialty insurance segment. Net premiums written outside the United States excluding the effect of foreign currency translation increased by 6% in the first quarter of 2015, with modest growth in our specialty insurance segment and more significant growth in our personal insurance and commercial insurance segments.

Average renewal rates outside the United States in our personal insurance segment were modestly higher in the first quarter of 2015 compared with expiring rates, driven particularly by the automobile class.

Average renewal rates outside the United States were flat in both our commercial insurance segment and professional liability business in the first quarter of 2015 compared with expiring rates. On average, the amounts of coverage purchased or the insured exposures upon renewal were flat in both our commercial insurance segment and professional liability business outside the United States in the first quarter of 2015. We continued to retain a high percentage of our existing commercial and professional liability business outside the United States in the first quarter of 2015. Retention levels in the first quarter of 2015 were flat in our commercial insurance segment and increased modestly in our professional liability business compared with the same period of 2014. The level of new business outside the United States in the first quarter of 2015 compared with the same period of 2014 was higher in our commercial insurance segment and slightly lower in our professional liability business.

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We expect that during the remainder of 2015 market conditions will remain competitive and average renewal rate increases in some classes of business will be at lower levels than those achieved in 2014.

Ceded Reinsurance

Our premiums written are net of amounts ceded to reinsurers who assume a portion of the risk under the insurance policies we write that are subject to reinsurance.

The most significant component of our ceded reinsurance program is property reinsurance. We purchase two main types of property reinsurance: catastrophe and property per risk.

For property risks in the United States and Canada we purchase traditional catastrophe reinsurance, including our primary treaty, which we refer to as the North American catastrophe treaty, as well as supplemental catastrophe reinsurance that provides additional coverage for our exposures in the northeast United States. For certain exposures in the United States, we have also arranged for the purchase of reinsurance funded through the issuance of multi–year, collateralized risk-linked securities, known as catastrophe bonds. For events outside the United States, we also purchase traditional catastrophe reinsurance.

We renewed our primary traditional property catastrophe treaties and our commercial property per risk treaty in April 2015 with limit structures similar to the expiring treaties and with modest enhancements in coverage, as well as in terms and conditions. The supplemental catastrophe reinsurance that provides coverage for our exposures in the northeast United States remains in effect until June 2016. In March 2015, we arranged for the purchase of reinsurance through the issuance of a catastrophe bond to replace the portion of a catastrophe bond that expired in March 2015.

The North American catastrophe treaty has an initial retention of $500 million and provides coverage for exposures in the United States and Canada of approximately 34% of losses (net of recoveries from other available reinsurance) between $500 million and $900 million and approximately 75% of losses (net of recoveries from other available reinsurance) between $900 million and $1.75 billion. For certain catastrophic events in the northeast United States or along the southern U.S. coastline, the combination of the North American catastrophe treaty, the supplemental catastrophe reinsurance and/or the catastrophe bond arrangements provides additional coverage as discussed below.

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The catastrophe bond arrangements provide reinsurance coverage for specific types of losses in specific geographic locations. They are generally designed to supplement coverage provided under the North American catastrophe treaty. We currently have three catastrophe bond arrangements in effect that expire between 2016 and 2020. We have a $150 million arrangement that expires in March 2016 that provides reinsurance coverage for our exposure to homeowners-related hurricane and severe thunderstorm losses in eight states along the southern U.S. coastline. We have a $270 million arrangement that expires in March 2018. We also have a $250 million arrangement that incepted in March 2015 and expires in March 2020, which replaced a $250 million arrangement that expired in March 2015. Both of the latter two catastrophe bond arrangements provide reinsurance coverage for our exposure to homeowners and commercial losses related to certain perils, including hurricanes and other named storms, earthquakes, severe thunderstorms and winter storms in 12 states in the northeast United States and the District of Columbia.

For the indicated catastrophic events in the northeast United States, the combination of the North American catastrophe treaty, the supplemental catastrophe reinsurance, and the $270 million and $250 million catastrophe bond arrangements provides additional coverage of approximately 63% of losses (net of recoveries from other available reinsurance) between $1.75 billion and $3.67 billion.

For hurricane and severe thunderstorm events along the southern U.S. coastline, the $150 million catastrophe bond arrangement provides additional coverage of approximately 45% of homeowners-related hurricane and severe thunderstorm losses (net of recoveries from other available reinsurance) between $875 million and $1.21 billion.

For hurricane events in Florida, in addition to the coverage provided by the North American catastrophe treaty and the $150 million catastrophe bond arrangement discussed above, we have reinsurance from the Florida Hurricane Catastrophe Fund, which is a state-mandated fund designed to reimburse insurers for a portion of their residential catastrophe-related hurricane losses. Our participation in this program, for which the most recent annual period began on June 1, 2014, provides coverage of 90% of homeowners-related hurricane losses in Florida in excess of our initial retention of $160 million per event. Under the terms of the program, our aggregate recoveries during the annual coverage period are limited to approximately $380 million, based on our current level of participation.

Our primary property catastrophe treaty for events outside the continental United States, including Canada, provides coverage of approximately 75% of losses (net of recoveries from other available reinsurance) between $100 million and $350 million. For catastrophic events in Australia and Canada, additional reinsurance provides coverage of 80% of losses (net of recoveries from other available reinsurance) between $350 million and $475 million.

Our commercial property per risk treaty provides coverage for property exposures both inside and outside the United States. Depending upon the currency in which the covered insurance policy was issued and prevailing foreign currency exchange rates, the treaty provides coverage per risk of approximately $470 million to $645 million in excess of our initial retention, which is generally between $20 million and $25 million.

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In addition to our major property catastrophe and property per risk treaties, we purchase several smaller property treaties that provide coverage for specific classes of business or locations having concentrations of risk.

Recoveries under our property reinsurance treaties are subject to certain coinsurance requirements that affect the interaction of some elements of our reinsurance program.

Our property reinsurance treaties generally contain terrorism exclusions for acts perpetrated by foreign terrorists, and for nuclear, biological, chemical and radiological loss causes, whether such acts are perpetrated by foreign or domestic terrorists.

The renewal rates associated with the North American catastrophe treaty, the catastrophe treaty that covers events outside the United States and the commercial property per risk treaty were lower than the rates for the expiring treaties. The costs related to the reinsurance purchased through the issuance of the catastrophe bond in March 2015 were also lower than those related to the expiring bond. We therefore expect that the overall cost of our property reinsurance program will be lower in 2015 than in 2014.

Profitability

The combined loss and expense ratio (or combined ratio), expressed as a percentage, is the key measure of underwriting profitability traditionally used in the property and casualty insurance business. Management evaluates the performance of our underwriting operations and of each of our business units using, among other measures, the combined loss and expense ratio calculated in accordance with U.S. statutory accounting principles. It is the sum of the ratio of losses and loss expenses to premiums earned (loss ratio) and the ratio of statutory underwriting expenses to premiums written (expense ratio) after reducing both premium amounts by dividends to policyholders. When the combined ratio is under 100%, underwriting results are generally considered profitable; when the combined ratio is over 100%, underwriting results are generally considered unprofitable.

Statutory accounting principles applicable to U.S. property and casualty insurance companies differ in certain respects from generally accepted accounting principles in the United States (GAAP). Under statutory accounting principles, policy acquisition and other underwriting expenses are recognized immediately, not at the time premiums are earned. Management uses underwriting results determined in accordance with GAAP, among other measures, to assess the overall performance of our underwriting operations. To convert statutory underwriting results to a GAAP basis, certain policy acquisition expenses are deferred and amortized over the period in which the related premiums are earned. Underwriting income determined in accordance with GAAP is defined as premiums earned less losses and loss expenses incurred and GAAP underwriting expenses incurred.

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An accident year is the calendar year in which a loss is incurred or, in the case of claims-made policies, the calendar year in which a loss is reported. The total losses and loss expenses incurred for a particular calendar year include current accident year losses and loss expenses as well as any increases or decreases to our estimates of losses and loss expenses that occurred in all prior accident years, which we refer to as prior year loss development.

Underwriting results for our property and casualty insurance business were profitable in the first quarter of 2015 and 2014. The combined loss and expense ratio was as follows:

	Quarter Ended March 31
	2015			2014
Loss ratio		62.0	%		61.1	%
Expense ratio		31.9			32.1
Combined loss and expense ratio		93.9	%		93.2	%

The 0.9 of a percentage point increase in the loss ratio in the first quarter of 2015 compared with the same period of 2014 was due to a lower amount of favorable prior year loss development and a higher impact of catastrophes, largely offset by a lower current accident year loss ratio excluding catastrophes. The current accident year loss ratio excluding catastrophes was lower in the first quarter of 2015 in our personal and specialty insurance segments and similar in our commercial insurance segment compared with the same period of 2014. The loss ratio in the first quarter of 2015 and 2014 included a significant impact from catastrophes. It also reflected favorable loss experience excluding catastrophes that we believe resulted from our disciplined underwriting in recent years. The loss ratio in the first quarter of both years also benefited from the positive impact of rate increases on premiums earned in most classes of business as well as favorable prior year loss development.

Our underwriting profitability in any given period will be affected by the impact of catastrophes in that period. We define a catastrophe as an event that is estimated to cause $25 million or more in industry-wide insured property losses and affects a significant number of policyholders and insurers.

The net impact of catastrophes in the first quarter of 2015 was $250 million, which represented 8.1 percentage points of the combined ratio, compared with $199 million or 6.6 percentage points in the same period of 2014. Most of the catastrophe losses in the first quarter of 2015 and 2014 related to severe winter weather in the United States.

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The impact of catastrophes, including losses and any related reinsurance reinstatement premiums, for individually significant events and all other events was as follows:

Quarter Ended March 31	Impact of Catastrophes
	(in millions)
2015
Winter freeze – Mid-Atlantic and Northeast United States – February 2015	$	165
Other events		85
Total	$	250
2014
Winter freeze – 17 states in the United States – January 2014	$	138
Other events		61
Total	$	199

The net impact of catastrophes in the first quarter of 2015 and 2014 reflected $14 million and $7 million, respectively, of favorable prior year loss development.

The expense ratio decreased by 0.2 of a percentage point in the first quarter of 2015 compared with the same period of 2014, due primarily to net premiums written increasing at a slightly higher rate than overhead expenses.

Review of Underwriting Results by Business Unit

Personal Insurance

Net premiums written in our personal insurance segment, which represented 33% of our total net premiums written in the first quarter of 2015, increased by 2% in the first quarter of 2015 compared with the same period of 2014. Net premiums written for the classes of business within the personal insurance segment were as follows:

	Quarter Ended March 31
	2015		2014		% Increase
	(in millions)
Automobile	$	176	$	173		2	%
Homeowners		600		592		1
Other		260		248		5
Total personal	$	1,036	$	1,013		2

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The increase in net premiums written in our personal insurance segment in the first quarter of 2015 compared with the same period of 2014 was driven by growth in the United States. Premium growth occurred in all classes of this business in the first quarter of 2015 in the United States. Net premiums written outside the United States decreased modestly in the first quarter of 2015, due to the negative effect of foreign currency translation. Excluding the effect of foreign currency translation, net premiums written outside the United States increased. The overall growth in our personal insurance segment excluding the effect of foreign currency translation was 5%. Such growth was attributable to higher insured exposures, higher rates upon renewal, strong retention of existing business, and new business.

Net premiums written for our personal automobile business increased in the first quarter of 2015 compared with the same period of 2014, driven by growth in the United States. Personal automobile net premiums written outside the United States were flat in the first quarter of 2015, due to the negative effect of foreign currency translation. Personal automobile net premiums written outside the United States have represented approximately 40% of our annual total personal automobile net premiums written, with more than half of such premiums written in Brazil.

Net premiums written for our homeowners business increased in the first quarter of 2015 compared with the same period of 2014, due to growth in the United States, reflecting increases in the values insured on existing policies, higher renewal rates, strong retention of existing business, and new business. Net premiums written outside the United States for our homeowners business decreased in the first quarter of 2015 compared with the same period of 2014, due to the negative effect of foreign currency translation.

Net premiums written for our other personal business, which includes accident and health, excess liability and yacht coverages, increased in the first quarter of 2015 compared with the same period of 2014, driven by significant growth in the United States. Premiums for our other personal business written outside the United States decreased in the first quarter of 2015 compared with the same period of 2014, due to the negative effect of foreign currency translation. Premiums for our accident and health business, about half of which is written outside the United States, increased modestly in the first quarter of 2015 compared with the same period of 2014, driven by significant growth in the United States. Accident and health premiums written outside the United States decreased modestly in the first quarter of 2015 due to the negative effect of foreign currency translation. Premiums for our excess liability business, most of which is written in the United States, increased in the first quarter of 2015 compared with the same period of 2014.

Our personal insurance segment produced unprofitable underwriting results in the first quarter of 2015 and 2014, but more so in 2015. The combined loss and expense ratios for the classes of business within the personal insurance segment were as follows:

	Quarter Ended March 31
	2015			2014
Automobile		92.9	%		101.4	%
Homeowners		112.7			104.9
Other		92.3			92.4
Total personal		105.1			101.8

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The 3.3 percentage point increase in the combined loss and expense ratio for our personal insurance segment in the first quarter of 2015 compared with the same period of 2014 was driven by deterioration in the results for our homeowners business, partially offset by improved results in our personal automobile business. The impact of catastrophes accounted for 18.4 percentage points of the combined ratio for our personal insurance segment in the first quarter of 2015 compared with 11.2 percentage points in the same period of 2014.

Personal automobile results were profitable in the first quarter of 2015 compared with unprofitable results in the same period of 2014. The 8.5 percentage point decrease in the combined ratio in the first quarter of 2015 compared with the same period of 2014 was driven by more profitable results in the United States. Results in the United States were highly profitable in the first quarter of 2015 compared with slightly unprofitable results in the same period of 2014. Results outside the United States were modestly unprofitable in the first quarter of both years. Personal automobile results in the first quarter of 2015 benefited from a modest amount of favorable prior year loss development while results in the same period of 2014 reflected a modest amount of unfavorable prior year loss development.

Homeowners results were unprofitable in the first quarter of 2015 and 2014, but more so in 2015. The 7.8 percentage point increase in the combined ratio in the first quarter of 2015 compared with the same period of 2014 was due to a higher impact of catastrophes, offset in part by a lower current accident year loss ratio excluding catastrophes, driven primarily by a decrease in fire losses. The impact of catastrophes accounted for 30.0 percentage points of the combined ratio for this class in the first quarter of 2015 compared with 17.9 percentage points in the same period of 2014.

Other personal results were similarly profitable in the first quarter of 2015 and 2014. Other personal results were highly profitable in the United States in the first quarter of both years. Results for this business outside the United States were modestly unprofitable in the first quarter of 2015 compared with slightly unprofitable results in the same period of 2014. Our accident and health business produced slightly profitable results in the first quarter of 2015 and 2014. In the first quarter of both years, results for this business were highly profitable in the United States and unprofitable outside the United States. Results for the excess liability component of this business were highly profitable in the first quarter of 2015 compared with profitable results in the same period of 2014. Excess liability results benefited from favorable prior year loss development in the first quarter of both years, but more so in 2015. Our yacht business produced highly profitable results in the first quarter of 2015 and 2014.

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Commercial Insurance

Net premiums written in our commercial insurance segment, which represented 47% of our total net premiums written in the first quarter of 2015, increased by 2% in the first quarter of 2015 compared with the same period of 2014. Net premiums written for the classes of business within the commercial insurance segment were as follows:

	Quarter Ended March 31				% Increase
	2015		2014		(Decrease)
	(in millions)
Multiple peril	$	269	$	261		3	%
Casualty		423		446		(5	)
Workers’ compensation		343		310		11
Property and marine		414		408		1
Total commercial	$	1,449	$	1,425		2

Growth in net premiums written in our commercial insurance segment in the first quarter of 2015 compared with the same period of 2014 was driven by growth in the United States. Net premiums written outside the United States decreased modestly in the first quarter of 2015, due to the negative effect of foreign currency translation. Excluding the effect of foreign currency translation, net premiums written outside the United States increased. Overall premium growth in our commercial insurance segment excluding the effect of foreign currency translation was 5%. Such growth reflected high retention, new business and higher rates upon renewal. The most significant growth in our commercial insurance segment in the first quarter of 2015 occurred in the workers’ compensation class, which is primarily written in the United States, reflecting high retention, higher renewal exposure and new business. In the first quarter of 2015, premiums written for the multiple peril and property and marine classes also increased, but were negatively impacted by foreign currency translation. Premiums written in the casualty class decreased in the first quarter of 2015 due primarily to the negative effect of foreign currency translation. Average renewal rates in our commercial insurance segment in the United States were up slightly in the first quarter of 2015 compared with expiring rates, but the level of increase was lower than in recent years. Average renewal rates outside the United States were flat compared to expiring rates in the first quarter of 2015. Retention levels of our existing policyholders were strong in the first quarter of both years. Retention levels in the United States were modestly higher in the first quarter of 2015 compared with the same period of 2014 while retention levels outside the United States were flat. The average renewal exposure change was flat both inside and outside the United States in the first quarter of 2015. The amount of new business, both inside and outside the United States, was higher in the first quarter of 2015 compared with the same period of 2014, as a result of more opportunities to write business at appropriate rates.

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Our commercial insurance segment produced profitable underwriting results in the first quarter of 2015 and 2014, but more so in 2014. The combined loss and expense ratios for the classes of business within the commercial insurance segment were as follows:

	Quarter Ended March 31
	2015			2014
Multiple peril		96.9	%		91.8	%
Casualty		93.7			89.7
Workers’ compensation		84.1			84.0
Property and marine		89.0			89.1
Total commercial		90.8			88.5

The 2.3 percentage point increase in the combined loss and expense ratio for our commercial insurance segment in the first quarter of 2015 compared with the same period of 2014 was due to a lower amount of favorable prior year loss development, offset in part by a lower impact of catastrophes. The current accident year loss ratio excluding catastrophes was similar in the first quarter of both years. The impact of catastrophes accounted for 3.4 percentage points of the combined ratio for our commercial insurance segment in the first quarter of 2015 compared with 6.1 percentage points in the same period of 2014. Results for our commercial insurance business in the first quarter of 2015 and 2014 benefited from favorable prior year loss development and our disciplined risk selection in recent years.

Multiple peril results were profitable in the first quarter of 2015 and 2014, but more so in 2014. The 5.1 percentage point increase in the combined ratio in the first quarter of 2015 compared with the same period of 2014 was due to worse results for the property component of this business. Results for the property component of this business were unprofitable in the first quarter of 2015 compared with highly profitable results in the same period of 2014, reflecting unfavorable prior year loss development in the first quarter of 2015 and favorable prior year loss development in the same period of 2014. Results for the liability component of this business were highly profitable in the first quarter of 2015 compared with modestly profitable results in the same period of 2014. The impact of catastrophes accounted for 9.6 percentage points of the combined ratio for the multiple peril class in the first quarter of 2015 compared with 9.4 percentage points in the same period of 2014.

Casualty results were profitable in the first quarter of 2015 and 2014, but more so in 2014. The 4.0 percentage point increase in the combined ratio in the first quarter of 2015 compared with the same period of 2014 was due mainly to less profitable results in the excess liability component of this business. Results for the primary liability component were profitable in the first quarter of 2015 compared with near breakeven results in the same period of 2014. Results for the automobile component were slightly unprofitable in the first quarter of 2015 compared with modestly profitable results in the same period of 2014. Results for the excess liability component were highly profitable in the first quarter of 2015 and 2014, but more so in 2014. Excess liability results in the first quarter of both years benefited from substantial favorable prior year loss development driven mainly by lower than expected claim severity. Casualty results were adversely affected by incurred losses related to asbestos

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and toxic waste claims in the first quarter of 2015. Our analysis of these exposures resulted in an increase in the estimate of our ultimate liabilities. Such losses represented 2.0 percentage points of the combined ratio for our casualty business in the first quarter of 2015, compared with an insignificant impact in the same period of 2014.

Workers’ compensation results were similarly profitable in the first quarter of 2015 and 2014. Results in the first quarter of both years reflected favorable prior year loss development as well as our disciplined risk selection during the past several years.

Property and marine results were also similarly profitable in the first quarter of 2015 and 2014. Results in the first quarter of 2015 reflected a lower impact of catastrophes compared with the same period of 2014, but results in the first quarter of 2014 benefited from favorable prior year loss development. The impact of catastrophes accounted for 4.7 percentage points of the combined ratio in the first quarter of 2015 compared with 14.6 percentage points in the same period of 2014.

Specialty Insurance

Net premiums written in our specialty insurance segment, which represented 20% of our total net premiums written in the first quarter of 2015, were flat in the first quarter of 2015 compared with the same period of 2014. Net premiums written for the classes of business within the specialty insurance segment were as follows:

	Quarter Ended March 31				% Increase
	2015		2014		(Decrease)
	(in millions)
Professional liability	$	545	$	552		(1	)%
Surety		76		72		6
Total specialty	$	621	$	624		—

Growth in net premiums written in our specialty insurance segment in the first quarter of 2015 compared with the same period of 2014 reflected the negative effect of foreign currency translation. Premium growth excluding the effect of foreign currency translation was 4%.

The decrease in net premiums written for our professional liability business in the first quarter of 2015 was driven by a significant decline in net premiums written outside the United States, due to the negative effect of foreign currency translation. Net premiums written in the United States were modestly higher in the first quarter of 2015 compared with the same period of 2014. Overall premium growth in our professional liability business continued to reflect our focus on profitability in the pricing of renewal policies and new business, in what remains a competitive marketplace. Retention levels for this business remained strong and were modestly higher in the first quarter of 2015 compared with those in the same period of 2014, both inside and outside the United States. New business increased in the United States in the first quarter of 2015 compared with the same period of 2014, but decreased slightly outside the United States. The new business volume in the first quarter of 2015,

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particularly in the United States, reflected opportunities to write suitably priced business in select classes due to the positive pricing trends in the market over the last few years. Average renewal rates in the United States for our professional liability business were up in the first quarter of 2015 compared with expiring rates, with increases occurring in most classes of this business. Average renewal rates outside the United States were flat in the first quarter of 2015 compared with expiring rates. On average, the amounts of insured exposures upon renewal were up slightly in the United States and close to flat outside the United States in the first quarter of 2015.

The increase in net premiums written for our surety business in the first quarter of 2015 compared with the same period of 2014 was driven by an increase in premiums written outside the United States, particularly in Latin America. Net premiums written in the United States for our surety business were flat in the first quarter of 2015. Premiums written in our surety business depend significantly on the extent to which our existing customers are awarded contracts to perform services. As a result, premium growth in our surety business can often vary from period to period.

Our specialty insurance business produced profitable underwriting results in the first quarter of 2015 and 2014, but more so in 2015. The combined loss and expense ratios for the classes of business within the specialty insurance segment were as follows:

	Quarter Ended March 31
	2015			2014
Professional liability		85.2	%		84.6	%
Surety		54.8			122.9
Total specialty		81.9			88.9

The 7.0 percentage point decrease in the combined loss and expense ratio for our specialty insurance segment in the first quarter of 2015 compared with the same period of 2014 was driven by improved results for our surety business.

Professional liability results were profitable in the first quarter of 2015 and 2014. The 0.6 of a percentage point increase in the combined ratio for this business in the first quarter of 2015 compared with the same period of 2014 was due to a slightly lower amount of favorable prior year loss development, offset in part by slightly improved current accident year results compared with the same period of 2014.

Results for the directors and officers liability and fiduciary liability classes were highly profitable in the first quarter of 2015 and 2014, but more so in 2014. Results for these classes reflected favorable prior year loss development in the first quarter of both years, but more so in 2014. Results for the fidelity class were also highly profitable in the first quarter of 2015 and 2014. Results for the employment practices liability class were modestly unprofitable in the first quarter of 2015 compared with slightly unprofitable results in the same period of 2014. Results for the errors and omissions liability class were highly profitable in the first quarter of 2015 compared with highly unprofitable results in the same period of 2014. Results for this class reflected favorable prior year loss development in the first quarter of 2015 compared with unfavorable prior year loss development in the same period of 2014.

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Surety results were profitable in the first quarter of 2015 compared with unprofitable results in the same period of 2014. The combined ratio was 68.1 percentage points lower in the first quarter of 2015 compared with the same period of 2014. The higher combined ratio in the first quarter of 2014 was due to one large loss outside the United States. Our surety business tends to be characterized by losses that are infrequent but have the potential to be highly severe.

Reinsurance Assumed

Net premiums written in our runoff reinsurance assumed business were not significant in the first quarter of 2015 or 2014. Results for this business were breakeven in the first quarter of both years.

Catastrophe Risk Management

Our property and casualty insurance subsidiaries have exposure to losses caused by natural perils such as hurricanes and other windstorms, earthquakes, severe winter weather and brush fires as well as from man-made catastrophic events such as terrorism. The frequency and severity of catastrophes are inherently unpredictable.

The extent of losses from a catastrophe is a function of both the total amount of insured exposure in an area affected by the event and the severity of the event. We regularly assess our concentrations of risk in catastrophe exposed areas globally and have strategies and underwriting standards to manage these exposures through individual risk selection, subject to regulatory constraints, and through the purchase of catastrophe reinsurance coverage. We use catastrophe modeling and a risk concentration management tool to monitor and control our accumulations of potential losses in catastrophe exposed areas in the United States, such as California and the gulf and east coasts, as well as in catastrophe exposed areas in other countries. The information provided by the catastrophe modeling and the risk concentration management tool has resulted in our non-renewing or reducing our exposure on some accounts and refraining from writing others.

Catastrophe modeling generally relies on multiple inputs based on experience, science, engineering and history, and the selection of those inputs requires a significant amount of judgment. Also, the modeling results may fail to account for risks that are outside the range of normal probability or are otherwise unforeseen. Because of this, actual results may differ materially from those derived from our modeling exercises.

We also continue to assess how changes in catastrophe risk, including the potential impact of global climate change, may affect our ability to manage our exposure under the insurance policies we issue, as well as how laws and regulations intended to combat climate change may affect us.

Despite our efforts to manage our catastrophe exposure, the occurrence of one or more severe catastrophic events could have a material effect on the Corporation’s results of operations, financial condition or liquidity.

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Loss Reserves

Unpaid losses and loss expenses, also referred to as loss reserves, are the largest liability of our property and casualty insurance subsidiaries.

Our loss reserves include case estimates for claims that have been reported and estimates for claims that have been incurred but not reported at the balance sheet date as well as estimates of the expenses associated with processing and settling all reported and unreported claims, less estimates of anticipated salvage and subrogation recoveries. Estimates are based upon past loss experience modified for current trends as well as prevailing economic, legal and social conditions. Our loss reserves are not discounted to present value.

We regularly review our loss reserves using a variety of actuarial techniques. We update the reserve estimates as historical loss experience develops, additional claims are reported and/or settled and new information becomes available. Any changes in estimates are reflected in operating results in the period in which the estimates are changed.

Incurred but not reported (IBNR) reserve estimates are generally calculated by first projecting the ultimate cost of all claims that have occurred and then subtracting reported losses and loss expenses. Reported losses include cumulative paid losses and loss expenses plus case reserves. The IBNR reserve includes a provision for claims that have occurred but have not yet been reported to us, some of which are not yet known to the insured, as well as a provision for future development on reported claims. A relatively large proportion of our net loss reserves, particularly for long tail liability classes, are reserves for IBNR losses. In fact, about 75% of our aggregate net loss reserves at March 31, 2015 were for IBNR losses.

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Our gross case and IBNR loss reserves and related reinsurance recoverable by class of business were as follows:

	Gross Loss Reserves						Reinsurance		Net Loss
March 31, 2015	Case		IBNR		Total		Recoverable		Reserves
	(in millions)
Personal insurance
Automobile	$	248	$	145	$	393	$	13	$	380
Homeowners		467		516		983		32		951
Other		311		747		1,058		65		993
Total personal		1,026		1,408		2,434		110		2,324
Commercial insurance
Multiple peril		587		1,209		1,796		36		1,760
Casualty		1,326		5,500		6,826		407		6,419
Workers’ compensation		1,138		2,113		3,251		291		2,960
Property and marine		748		475		1,223		340		883
Total commercial		3,799		9,297		13,096		1,074		12,022
Specialty insurance
Professional liability		1,109		5,406		6,515		271		6,244
Surety		17		66		83		5		78
Total specialty		1,126		5,472		6,598		276		6,322
Total insurance		5,951		16,177		22,128		1,460		20,668
Reinsurance assumed		134		253		387		123		264
Total	$	6,085	$	16,430	$	22,515	$	1,583	$	20,932
	Gross Loss Reserves						Reinsurance		Net Loss
December 31, 2014	Case		IBNR		Total		Recoverable		Reserves
	(in millions)
Personal insurance
Automobile	$	260	$	151	$	411	$	14	$	397
Homeowners		438		353		791		43		748
Other		331		739		1,070		70		1,000
Total personal		1,029		1,243		2,272		127		2,145
Commercial insurance
Multiple peril		596		1,194		1,790		40		1,750
Casualty		1,412		5,514		6,926		412		6,514
Workers’ compensation		1,116		2,091		3,207		289		2,918
Property and marine		773		465		1,238		355		883
Total commercial		3,897		9,264		13,161		1,096		12,065
Specialty insurance
Professional liability		1,180		5,587		6,767		287		6,480
Surety		18		62		80		5		75
Total specialty		1,198		5,649		6,847		292		6,555
Total insurance		6,124		16,156		22,280		1,515		20,765
Reinsurance assumed		145		253		398		124		274
Total	$	6,269	$	16,409	$	22,678	$	1,639	$	21,039

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Loss reserves, net of reinsurance recoverable, decreased by $107 million during the first quarter of 2015. The decrease in loss reserves during the first quarter of 2015 included a decrease of $367 million related to the effect of foreign currency translation, due to a stronger U.S. dollar relative to the currencies in which our loss reserves were held at March 31, 2015 compared with December 31, 2014. The decrease in loss reserves also reflected an increase of $184 million related to catastrophe losses. Loss reserves related to our insurance business decreased by $97 million and loss reserves related to our runoff reinsurance assumed business decreased by $10 million.

The increase in gross loss reserves in the homeowners class during the first quarter of 2015 was driven by catastrophe and other weather-related losses. The decrease in gross loss reserves in the professional liability classes reflected the effect of foreign currency translation as well as payment activity and favorable prior year loss development. The decrease in gross loss reserves in the casualty classes was due primarily to the effect of foreign currency translation.

In establishing the loss reserves of our property and casualty insurance subsidiaries, we consider facts currently known and the present state of the law and coverage litigation. Based on all information currently available, we believe that the aggregate net loss reserves at March 31, 2015 were adequate to cover claims for losses that had occurred as of that date, including both those known to us and those yet to be reported. However, as discussed in Item 7 of our Annual Report on Form 10-K for the year ended December 31, 2014, there are significant uncertainties inherent in the loss reserving process. It is therefore possible that management’s estimate of the ultimate liability for losses that had occurred as of March 31, 2015 may change, which could have a material effect on the Corporation’s results of operations and financial condition.

Changes in loss reserve estimates are unavoidable because such estimates are subject to the outcome of future events. Loss trends vary and time is required for changes in trends to be recognized and confirmed. Reserve changes that increase previous estimates of ultimate cost are referred to as unfavorable or adverse development or reserve strengthening. Reserve changes that decrease previous estimates of ultimate cost are referred to as favorable development or reserve releases.

We estimate that we experienced overall favorable development of about $110 million during the first quarter of 2015 compared with favorable development of about $160 million in the same period of 2014, on net loss reserves established as of the respective prior year end.

The favorable development in the first quarter of 2015 was primarily in the professional liability classes due to favorable loss experience related mainly to accident years 2011 and prior, and in the commercial liability classes due to favorable loss experience related mainly to accident years 2012 and prior. The favorable development in the first quarter of 2014 was primarily in the professional liability classes due to favorable loss experience related mainly to accident years 2007 and prior, in the commercial liability classes due to favorable loss experience related mainly to accident years 2012 and prior, and in the commercial property classes due mainly to lower than expected severity primarily in the 2013 accident year.

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Investment Results

Our ability to grow our property and casualty investment income is a function of several variables, including investable cash flows, available reinvestment rates and foreign currency to U.S. dollar exchange rates. The property and casualty subsidiaries’ investable cash flows are impacted by many factors, including operating activities, the payment of dividends to Chubb and the timing of maturities, calls and redemptions of fixed maturities. Economic conditions and national monetary policies both inside and outside the United States have resulted in a low interest rate environment in recent years that is expected to continue to adversely affect our ability to increase our investment income.

Property and casualty investment income before taxes decreased by 6% in the first quarter of 2015 compared with the same period in 2014. The decrease was due primarily to a decline in the average yield of our property and casualty subsidiaries’ investment portfolio and, to a lesser extent, the impact of foreign currency translation, partially offset by the impact of an increase in our average invested assets. The decrease in the average yield on the investment portfolio primarily resulted from lower reinvestment yields on securities that we purchased to replace fixed maturities that matured, were redeemed by the issuer or were sold since the first quarter of 2014. While the property and casualty subsidiaries generated substantial operating cash flows in the last nine months of 2014 and the first quarter of 2015, average invested assets were impacted by substantial dividend distributions made by the property and casualty subsidiaries to Chubb during 2014. As a result of the dividend distributions, our property and casualty subsidiaries held only a slightly higher amount of average invested assets in the first quarter of 2015 compared with the same period of 2014.

The effective tax rate on our investment income was 17.8% in the first quarter of 2015 compared with 18.8% in the same period of 2014. The effective tax rate on our investment income is lower than the U.S. statutory tax rate since a portion of our investment income is tax exempt interest income. The effective tax rate fluctuates as the proportion of tax exempt investment income relative to total investment income changes from period to period.

On an after-tax basis, property and casualty investment income decreased by 5% in the first quarter of 2015 compared with the same period of 2014. The after-tax annualized yield on our property and casualty subsidiaries’ investment portfolio was 2.65% and 2.80% in the first quarter of 2015 and 2014, respectively.

Other Income and Charges

Other income and charges, which includes miscellaneous income and expenses of the property and casualty subsidiaries, was not significant in the first quarter of 2015 and 2014.

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Corporate and Other

Corporate and other comprises investment income earned on corporate invested assets, interest expense and other expenses not allocated to our operating subsidiaries and the results of our non-insurance subsidiaries.

Corporate and other produced a loss before taxes of $62 million in the first quarter of 2015 compared with a loss of $60 million for the same period of 2014.

Realized Investment Gains and Losses

Net realized investment gains and losses were as follows:

	Quarter Ended March 31
	2015			2014
	(in millions)
Net realized gains (losses)
Fixed maturities	$	8		$	(3	)
Equity securities		16			66
Other invested assets		10			53
		34			116
Other-than-temporary impairment losses
Fixed maturities		(1	)		—
Equity securities		(22	)		—
		(23	)		—
Realized investment gains before tax	$	11		$	116
Realized investment gains after tax	$	8		$	75

The net realized gains and losses of other invested assets primarily include the aggregate of realized gain distributions to us from the private equity limited partnerships in which we have an interest and changes in our equity in the net assets of those partnerships based on valuations provided to us by the manager of each partnership. Due to the timing of our receipt of valuation data from the investment managers, the value of these investments and any related realized gains and losses are generally reported on a one quarter lag.

The net realized gains of the limited partnerships reported in the first quarter of 2015 primarily reflected the positive performance of the U.S. equity markets in the fourth quarter of 2014. The net realized gains of the limited partnerships reported in the first quarter of 2014 primarily reflected the positive performance of the global equity and high yield investment markets in the fourth quarter of 2013.

We regularly review invested assets that have a fair value less than cost to determine if an other-than-temporary decline in value has occurred. We have a monitoring process overseen by a committee of investment and accounting professionals that is responsible for identifying those securities to be specifically evaluated for a potential other-than-temporary impairment.

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The determination of whether a decline in value of any investment is temporary or other than temporary requires the judgment of management. The assessment of other-than-temporary impairment of fixed maturities and equity securities is based on both quantitative criteria and qualitative information. A number of factors are considered including, but not limited to, the length of time and the extent to which the fair value has been less than the cost, the financial condition and near term prospects of the issuer, whether the issuer is current on contractually obligated interest and principal payments, general market conditions and industry or sector specific factors. The decision to recognize a decline in the value of a security carried at fair value as other than temporary rather than temporary has no impact on shareholders’ equity.

In determining whether fixed maturities are other than temporarily impaired, we are required to recognize an other-than-temporary impairment loss when we conclude that we have the intent to sell or it is more likely than not that we will be required to sell an impaired fixed maturity before the security recovers to its amortized cost value or it is likely we will not recover the entire amortized cost value of an impaired security. If we have the intent to sell or it is more likely than not that we will be required to sell an impaired fixed maturity before the security recovers to its amortized cost value, the security is written down to fair value and the entire amount of the writedown is included in net income as a realized investment loss. For all other impaired fixed maturities, when the impairment is determined to be other than temporary, the impairment loss is separated into the amount representing the credit loss and the amount representing the loss related to all other factors. The amount of the impairment loss that represents the credit loss is included in net income as a realized investment loss and the amount of the impairment loss that relates to all other factors is included in other comprehensive income.

In determining whether equity securities are other than temporarily impaired, we consider our intent and ability to hold a security for a period of time sufficient to allow us to recover our cost. If a decline in the fair value of an equity security is deemed to be other than temporary, the security is written down to fair value and the amount of the writedown is included in net income as a realized investment loss.

Capital Resources and Liquidity

Capital resources and liquidity represent a company’s overall financial strength and its ability to generate cash flows, borrow funds at competitive rates and raise new capital to meet operating and growth needs.

Capital Resources

Capital resources provide protection for policyholders, furnish the financial strength to support the business of underwriting insurance risks and facilitate continued business growth. At March 31, 2015, the Corporation had shareholders’ equity of $16.2 billion and total debt of $3.3 billion.

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Management regularly monitors the Corporation’s capital resources. In connection with our long term capital strategy, from time to time Chubb may contribute capital to its property and casualty subsidiaries. In addition, in order to satisfy capital needs as a result of any rating agency capital adequacy or other future rating issues, or in the event we were to need additional capital to make strategic investments in light of market opportunities, we may take a variety of actions, which could include the issuance of additional debt and/or equity securities. We believe that our strong financial position and current debt level provide us with the flexibility and capacity to obtain funds externally through debt or equity financings on both a short term and long term basis.

In January 2014, the Board of Directors authorized the repurchase of up to $1.5 billion of Chubb’s common stock. Repurchases under this authorization were completed in January 2015. On January 29, 2015, the Board of Directors authorized the repurchase of up to $1.3 billion of Chubb’s common stock. During the first quarter of 2015, under these two authorizations we repurchased 3,234,526 shares of Chubb’s common stock in open market transactions at a cost of $326 million. As of March 31, 2015, $1,026 million remained under the January 2015 authorization. This authorization has no expiration date. We expect to complete the repurchase of shares under this authorization by the end of January 2016, subject to market conditions and other factors.

Ratings

Chubb and its property and casualty insurance subsidiaries are rated by major rating agencies. These ratings reflect the rating agency’s opinion of our financial strength, operating performance, strategic position and ability to meet our obligations to policyholders.

Credit ratings assess a company’s ability to make timely payments of interest and principal on its debt. Financial strength ratings assess an insurer’s ability to meet its financial obligations to policyholders.

Chubb’s issuer credit ratings and its property and casualty subsidiaries’ financial strength ratings were provided in Item 7 of our Annual Report on Form 10-K for the year ended December 31, 2014. As of April 30, 2015, they were unchanged except that on April 16, 2015, A.M. Best raised the issuer credit rating for Chubb’s senior unsecured debt to “aa” from “aa-” and for junior subordinated capital securities to “a+” from “a”.

Ratings are an important factor in establishing our competitive position in the insurance markets. There can be no assurance that our ratings will continue for any given period of time or that they will not be changed.

If our credit ratings were downgraded, we might incur higher borrowing costs and might have more limited means to access capital. A downgrade in our financial strength ratings could adversely affect the competitive position of our insurance operations, including a possible reduction in demand for our products in certain markets.

Page 48

Liquidity

Liquidity is a measure of a company’s ability to generate sufficient cash flows to meet the short and long term cash requirements of its business operations.

The Corporation’s liquidity requirements in the past have generally been met by funds from operations and we expect that funds from operations will continue to be sufficient to meet such requirements in the future. Liquidity requirements could also be met by funds received upon the maturity or sale of marketable securities in our investment portfolio. Chubb also has the ability to borrow under its $500 million credit facility and we believe we could issue debt or equity securities.

Our property and casualty operations provide liquidity in that insurance premiums are generally received months or even years before losses are paid under the policies purchased by such premiums. Cash receipts from operations, consisting of insurance premiums and investment income, provide funds to pay losses, operating expenses and dividends to Chubb. Cash receipts in excess of required cash outflows can be used to build the investment portfolio with the expectation of generating additional investment income in the future.

Our property and casualty subsidiaries maintain substantial investments in highly liquid, short term marketable securities. Accordingly, we do not anticipate selling long term fixed maturities to meet any liquidity needs.

Chubb’s liquidity requirements primarily include the payment of dividends to shareholders and interest and principal on debt obligations. The declaration and payment of dividends to Chubb’s shareholders is at the discretion of Chubb’s Board of Directors and depends upon many factors, including our operating results, financial condition, capital requirements and any regulatory constraints.

As a holding company, Chubb’s ability to continue to pay dividends to shareholders and to satisfy its debt obligations relies on the availability of liquid assets, which is dependent in large part on the dividend paying ability of its property and casualty subsidiaries. The timing and amount of dividends paid by the property and casualty subsidiaries to Chubb may vary from year to year. In the United States, our property and casualty subsidiaries are subject to laws and regulations in the jurisdictions in which they operate that restrict the amount and timing of dividends they may pay within twelve consecutive months without the prior approval of regulatory authorities. The restrictions are generally based on net income and on certain levels of policyholders’ surplus as determined in accordance with statutory accounting principles. Dividends in excess of such thresholds are considered “extraordinary” and require prior regulatory approval.

During the first quarter of 2015, the property and casualty subsidiaries paid dividends of $395 million to Chubb. Whether any dividends the property and casualty subsidiaries may pay during the remainder of 2015 require regulatory approval will depend on the amount and timing of the dividend payments. As of March 31, 2015, the maximum aggregate dividend distribution that may be made by the subsidiaries to Chubb during the remainder of 2015 without prior regulatory approval was approximately $1.5 billion.

Page 49

The Corporation’s strong underwriting and investment results generated substantial positive operating cash flows of $530 million and $372 million in the first quarter of 2015 and 2014, respectively. The cash provided by operating activities increased approximately $160 million in the first quarter of 2015 compared with the same period of 2014 primarily as a result of lower loss payments and, to a lesser extent, higher premium collections, partially offset by higher tax payments.

Invested Assets

The main objectives in managing our investment portfolios are to maximize after-tax investment income and total investment return while managing credit risk and interest rate risk in order to ensure that funds will be available to meet our insurance obligations. Investment strategies are developed based on many factors including underwriting results and our resulting tax position, regulatory requirements, fluctuations in interest rates and consideration of other market risks. Investment decisions are centrally managed by investment professionals based on guidelines established by management and approved by the boards of directors of Chubb and its respective operating companies.

Our investment portfolio primarily comprises high quality bonds, principally tax exempt securities, corporate bonds, U.S. Treasury securities and mortgage-backed securities, as well as foreign government and corporate bonds that support our operations outside the United States. The portfolio also includes equity securities, primarily publicly traded common stocks, and other invested assets, primarily private equity limited partnerships, all of which are held with the primary objective of capital appreciation.

Our objective is to achieve an appropriate mix of taxable and tax exempt securities in our portfolio to balance both investment and tax strategies. At March 31, 2015, 65% of our U.S. fixed maturity portfolio was invested in tax exempt securities. At March 31, 2015, about 75% of our tax exempt securities were rated Aa or better, with about 15% rated Aaa. The average rating of our tax exempt securities was Aa. While about 10% of our tax exempt securities were insured, the effect of insurance on the average credit rating of these securities was insignificant. The insured tax exempt securities in our portfolio have been selected based on the quality of the underlying credit and not the value of the credit insurance enhancement.

At March 31, 2015, 8% of our taxable fixed maturity portfolio was invested in U.S. government and government agency and authority obligations other than mortgage-backed securities and had an average rating of Aa. About 75% of the U.S. government and government agency and authority obligations other than mortgage-backed securities were U.S. Treasury securities with an average rating of Aaa and the remainder were taxable bonds issued by states, municipalities and political subdivisions within the United States with an average rating of Aa.

At March 31, 2015, 51% of our taxable fixed maturity portfolio consisted of corporate bonds that were issued by a diverse group of U.S. and foreign issuers and had an average rating of A. About 60% of our corporate bonds were issued by U.S. companies and about 40% were issued by foreign companies. At March 31, 2015, about 5% of our foreign corporate bonds were below investment grade.

Page 50

At March 31, 2015, 34% of our taxable fixed maturity portfolio was invested in foreign government and government agency obligations, which had an average rating of Aa. The foreign government and government agency obligations consisted of high quality securities, primarily issued or guaranteed by national governments and, to a lesser extent, government agencies, regional governments and supranational organizations. The five largest sovereign issuers within our portfolio were Canada, the United Kingdom, Germany, Australia and Brazil, which collectively accounted for about 75% of our total foreign government and government agency obligations. Another 7% of our total foreign government and government agency obligations were issued by supranational organizations. At March 31, 2015, none of our foreign government and government agency obligations were below investment grade. We did not hold any foreign government or government agency obligations that have third party guarantees.

At March 31, 2015, 7% of our taxable fixed maturity portfolio was invested in mortgage-backed securities. About 95% of the mortgage-backed securities were rated Aaa. About half of the remaining 5% were below investment grade. Of the Aaa rated securities, 88% were call protected, commercial mortgage-backed securities (CMBS). All of our CMBS were senior securities with the highest level of credit support. The other 12% of the Aaa rated securities were residential mortgage-backed securities, consisting of government agency pass-through securities guaranteed by a government agency or a government sponsored enterprise and collateralized mortgage obligations backed by single family home mortgages.

The net unrealized appreciation before tax of our fixed maturities and equity securities carried at fair value was $2.9 billion at March 31, 2015 compared with net unrealized appreciation before tax of $2.7 billion at December 31, 2014. Such unrealized appreciation is reflected in accumulated other comprehensive income, net of applicable deferred income taxes.

Fair Values of Financial Instruments

Fair values of financial instruments are determined by management using valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs. Fair values are generally measured using quoted prices in active markets for identical assets or liabilities or other inputs, such as quoted prices for similar assets or liabilities, that are observable, either directly or indirectly. In those instances where observable inputs are not available, fair values are measured using unobservable inputs for the asset or liability. Unobservable inputs reflect our own assumptions about the assumptions that market participants would use in pricing the asset or liability and are developed based on the best information available in the circumstances. Fair value estimates derived from unobservable inputs are affected by the assumptions used, including the discount rates and the estimated amounts and timing of future cash flows. The derived fair value estimates cannot be substantiated by comparison to independent markets and are not necessarily indicative of the amounts that would be realized in a current market exchange.

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The fair value hierarchy prioritizes the inputs to valuation techniques used to measure fair value into three broad levels as follows:

Level 1 – Unadjusted quoted prices in active markets for identical financial instruments.

Level 2 – Other inputs that are observable for the financial instrument, either directly or indirectly.

Level 3 – Significant unobservable inputs.

The methods and assumptions used to estimate the fair values of financial instruments are as follows:

The carrying value of short term investments approximates fair value due to the short maturities of these investments.

Fair values of fixed maturities are determined by management, utilizing prices obtained from a third party, nationally recognized pricing service or, in the case of securities for which prices are not provided by a pricing service, from third party brokers. For fixed maturities that have quoted prices in active markets, market quotations are provided. For fixed maturities that do not trade on a daily basis, the pricing service and brokers provide fair value estimates using a variety of inputs including, but not limited to, benchmark yields, reported trades, broker/dealer quotes, issuer spreads, bids, offers, reference data, prepayment rates and measures of volatility. Management reviews on an ongoing basis the reasonableness of the methodologies used by the relevant pricing service and brokers. In addition, management, using the prices received for the securities from the pricing service and brokers, determines the aggregate portfolio price performance and reviews it against applicable indices. If management believes that significant discrepancies exist, it will discuss these with the relevant pricing service or broker to resolve the discrepancies.

Fair values of equity securities are determined by management, utilizing quoted market prices.

Fair values of long term debt issued by Chubb are determined by management, utilizing prices obtained from a third party, nationally recognized pricing service.

At March 31, 2015 and December 31, 2014, a pricing service provided fair value amounts for approximately 99% of our fixed maturities. The prices we obtain from a pricing service and brokers generally are non-binding, but are reflective of current market transactions in the applicable financial instruments.

At March 31, 2015 and December 31, 2014, we held an insignificant amount of financial instruments in our investment portfolio for which a lack of market liquidity impacted our determination of fair value.

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Item 3 — Quantitative and Qualitative Disclosures About Market Risk

For the Corporation’s disclosures about market risk, see Item 7A in Part II of Chubb’s Annual Report on Form 10-K for the year ended December 31, 2014. There have been no material changes to the Corporation’s disclosures about market risk in Item 7A of Chubb’s Annual Report on Form 10-K for the year ended December 31, 2014.

Item 4 — Controls and Procedures

As of March 31, 2015, an evaluation of the effectiveness of the design and operation of the Corporation’s disclosure controls and procedures (as such term is defined in Rule 13a-15(e) of the Securities Exchange Act of 1934) was performed under the supervision and with the participation of the Corporation’s management, including Chubb’s chief executive officer and chief financial officer. Based on that evaluation, the chief executive officer and chief financial officer concluded that the Corporation’s disclosure controls and procedures were effective as of March 31, 2015.

During the quarter ended March 31, 2015, there were no changes in internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, the Corporation’s internal control over financial reporting.

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PART II. OTHER INFORMATION

Item 1A — Risk Factors

For a discussion of the Corporation’s potential risks and uncertainties that could have a material adverse effect on our business, results of operations, profitability, financial condition, liquidity or cash flows and that could cause our operating results to vary significantly from period to period, see Item 1A in Part I of Chubb’s Annual Report on Form 10-K for the year ended December 31, 2014. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also could have a material adverse effect on our business, results of operations, profitability, financial condition, liquidity or cash flows.

Item 2 — Unregistered Sales of Equity Securities and Use of Proceeds

The following table summarizes Chubb’s stock repurchased each month in the quarter ended March 31, 2015:

	Total Number of Shares Purchased		Average Price Paid Per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs		Maximum Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs (a)
							(in millions)
Period
January 1 – January 31		510,185	$	102.49		510,185	$	1,300
February 1 – February 28		1,858,188		100.27		1,858,188		1,114
March 1 – March 31		866,153		100.82		866,153		1,026
Total		3,234,526		100.77		3,234,526

(a) On January 30, 2014, the Board of Directors authorized the repurchase of up to $1.5 billion of Chubb’s common stock. In January 2015, Chubb repurchased $52 million of its common stock remaining under the January 30, 2014 authorization. On January 29, 2015, the Board of Directors authorized the repurchase of up to $1.3 billion of Chubb’s common stock. The January 29, 2015 authorization has no expiration date.

Page 54

Item 6 — Exhibits

Exhibit Number		Description
	-	Material Contracts
10.1*		Schedule of Salary Actions for Named Executive Officers incorporated by reference to Exhibit (10.1) of the registrant’s Current Report on Form 8-K filed on March 3, 2015.
10.2*		Form of Performance Unit Award Agreement under The Chubb Corporation Long-Term Incentive Plan (2014) incorporated by reference to Exhibit (10.2) of the registrant’s Current Report on Form 8-K filed on March 3, 2015.
10.3*		Form of Restricted Stock Unit Agreement under The Chubb Corporation Long-Term Incentive Plan (2014) incorporated by reference to Exhibit (10.3) of the registrant’s Current Report on Form 8-K filed on March 3, 2015.
10.4*		Description of Non-Employee Director Compensation incorporated by reference to Exhibit (10.33) of the registrant’s Annual Report on Form 10-K for the year ended December 31, 2014.
	-	Rule 13a-14(a)/15d-14(a) Certifications
31.1		Certification by John D. Finnegan filed herewith.
31.2		Certification by Richard G. Spiro filed herewith.
	-	Section 1350 Certifications
32.1		Certification by John D. Finnegan filed herewith.
32.2		Certification by Richard G. Spiro filed herewith.
	-	Interactive Data File
101.INS		XBRL Instance Document
101.SCH		XBRL Taxonomy Extension Schema Document
101.CAL		XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB		XBRL Taxonomy Extension Label Linkbase Document
101.PRE		XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF		XBRL Taxonomy Extension Definition Linkbase Document

* This exhibit is a management contract or a compensatory plan or arrangement.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, The Chubb Corporation has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

THE CHUBB CORPORATION
(Registrant)
By:	/s/ John J. Kennedy
	John J. Kennedy
	Senior Vice President and Chief Accounting Officer

Date: May 6, 2015

EX-31.1

Exhibit 31.1

THE CHUBB CORPORATION

CERTIFICATION

I, John D. Finnegan, certify that:

1.    I have reviewed this quarterly report on Form 10-Q of The Chubb Corporation;

2.    Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.    Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.    The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.    The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 6, 2015

/s/    John D. Finnegan

John D. Finnegan

Chairman, President and Chief Executive Officer

EX-31.2

Exhibit 31.2

THE CHUBB CORPORATION

CERTIFICATION

I, Richard G. Spiro, certify that:

1.    I have reviewed this quarterly report on Form 10-Q of The Chubb Corporation;

2.    Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.    Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.    The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.    The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 6, 2015

/s/    Richard G. Spiro

Richard G. Spiro

Executive Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

THE CHUBB CORPORATION

CERTIFICATION OF PERIODIC REPORT

I, John D. Finnegan, Chairman, President and Chief Executive Officer of The Chubb Corporation (the “Corporation”), certify, pursuant to 18 U.S.C. Section 1350 adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) the Quarterly Report on Form 10-Q of the Corporation for the quarterly period ended March 31, 2015 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)); and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Corporation.

Dated: May 6, 2015

/s/    John D. Finnegan

John D. Finnegan

Chairman, President and Chief Executive Officer

EX-32.2

Exhibit 32.2

THE CHUBB CORPORATION

CERTIFICATION OF PERIODIC REPORT

I, Richard G. Spiro, Executive Vice President and Chief Financial Officer of The Chubb Corporation (the “Corporation”), certify, pursuant to 18 U.S.C. Section 1350 adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) the Quarterly Report on Form 10-Q of the Corporation for the quarterly period ended March 31, 2015 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)); and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Corporation.

Dated: May 6, 2015

/s/    Richard G. Spiro

Richard G. Spiro

Executive Vice President and Chief Financial Officer

XML

Fair Values of Financial Instruments - Additional Information (Detail)	Mar. 31, 2015	Dec. 31, 2014
Debt Instrument Fair Value Carrying Value [Abstract]
Percentage of fair value amounts for fixed maturities provided by a pricing service	99.00%	99.00%

XML

Invested Assets - Fair Value and Gross Unrealized Depreciation of Investments in Unrealized Loss Position (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Investment Holdings [Line Items]
Investment securities, Continuous unrealized loss position, Less Than 12 Months, Fair Value	$ 2,164	$ 3,176
Investment securities, Continuous unrealized loss position, Less Than 12 Months, Gross Unrealized Depreciation	34	39
Investment securities, Continuous unrealized loss position, 12 Months or More, Fair Value	709	1,521
Investment securities, Continuous unrealized loss position, 12 Months or More, Gross Unrealized Depreciation	24	42
Investment securities, Continuous unrealized loss position, Fair Value, Total	2,873	4,697
Investment securities, Continuous unrealized loss position, Gross Unrealized Depreciation, Total	58	81
Fixed Maturities [Member]
Investment Holdings [Line Items]
Investment securities, Continuous unrealized loss position, Less Than 12 Months, Fair Value	2,105	3,109
Investment securities, Continuous unrealized loss position, Less Than 12 Months, Gross Unrealized Depreciation	27	28
Investment securities, Continuous unrealized loss position, 12 Months or More, Fair Value	706	1,510
Investment securities, Continuous unrealized loss position, 12 Months or More, Gross Unrealized Depreciation	21	34
Investment securities, Continuous unrealized loss position, Fair Value, Total	2,811	4,619
Investment securities, Continuous unrealized loss position, Gross Unrealized Depreciation, Total	48	62
Equity Securities [Member]
Investment Holdings [Line Items]
Investment securities, Continuous unrealized loss position, Less Than 12 Months, Fair Value	59	67
Investment securities, Continuous unrealized loss position, Less Than 12 Months, Gross Unrealized Depreciation	7	11
Investment securities, Continuous unrealized loss position, 12 Months or More, Fair Value	3	11
Investment securities, Continuous unrealized loss position, 12 Months or More, Gross Unrealized Depreciation	3	8
Investment securities, Continuous unrealized loss position, Fair Value, Total	62	78
Investment securities, Continuous unrealized loss position, Gross Unrealized Depreciation, Total	10	19
Tax Exempt [Member] | Fixed Maturities [Member]
Investment Holdings [Line Items]
Investment securities, Continuous unrealized loss position, Less Than 12 Months, Fair Value	1,103	422
Investment securities, Continuous unrealized loss position, Less Than 12 Months, Gross Unrealized Depreciation	9	3
Investment securities, Continuous unrealized loss position, 12 Months or More, Fair Value	219	305
Investment securities, Continuous unrealized loss position, 12 Months or More, Gross Unrealized Depreciation	15	13
Investment securities, Continuous unrealized loss position, Fair Value, Total	1,322	727
Investment securities, Continuous unrealized loss position, Gross Unrealized Depreciation, Total	24	16
Taxable [Member] | Fixed Maturities [Member]
Investment Holdings [Line Items]
Investment securities, Continuous unrealized loss position, Less Than 12 Months, Fair Value	1,002	2,687
Investment securities, Continuous unrealized loss position, Less Than 12 Months, Gross Unrealized Depreciation	18	25
Investment securities, Continuous unrealized loss position, 12 Months or More, Fair Value	487	1,205
Investment securities, Continuous unrealized loss position, 12 Months or More, Gross Unrealized Depreciation	6	21
Investment securities, Continuous unrealized loss position, Fair Value, Total	1,489	3,892
Investment securities, Continuous unrealized loss position, Gross Unrealized Depreciation, Total	24	46
Taxable [Member] | U.S. Government and Government Agency and Authority Obligations [Member] | Fixed Maturities [Member]
Investment Holdings [Line Items]
Investment securities, Continuous unrealized loss position, Less Than 12 Months, Fair Value	170	936
Investment securities, Continuous unrealized loss position, Less Than 12 Months, Gross Unrealized Depreciation	1	1
Investment securities, Continuous unrealized loss position, 12 Months or More, Fair Value	10	36
Investment securities, Continuous unrealized loss position, Fair Value, Total	180	972
Investment securities, Continuous unrealized loss position, Gross Unrealized Depreciation, Total	1	1
Taxable [Member] | Corporate Bonds [Member] | Fixed Maturities [Member]
Investment Holdings [Line Items]
Investment securities, Continuous unrealized loss position, Less Than 12 Months, Fair Value	474	1,327
Investment securities, Continuous unrealized loss position, Less Than 12 Months, Gross Unrealized Depreciation	15	23
Investment securities, Continuous unrealized loss position, 12 Months or More, Fair Value	311	888
Investment securities, Continuous unrealized loss position, 12 Months or More, Gross Unrealized Depreciation	4	17
Investment securities, Continuous unrealized loss position, Fair Value, Total	785	2,215
Investment securities, Continuous unrealized loss position, Gross Unrealized Depreciation, Total	19	40
Taxable [Member] | Foreign Government and Government Agency Obligations [Member] | Fixed Maturities [Member]
Investment Holdings [Line Items]
Investment securities, Continuous unrealized loss position, Less Than 12 Months, Fair Value	344	318
Investment securities, Continuous unrealized loss position, Less Than 12 Months, Gross Unrealized Depreciation	2	1
Investment securities, Continuous unrealized loss position, 12 Months or More, Fair Value	77	207
Investment securities, Continuous unrealized loss position, 12 Months or More, Gross Unrealized Depreciation		2
Investment securities, Continuous unrealized loss position, Fair Value, Total	421	525
Investment securities, Continuous unrealized loss position, Gross Unrealized Depreciation, Total	2	3
Residential Mortgage-backed Securities [Member] | Taxable [Member] | Fixed Maturities [Member]
Investment Holdings [Line Items]
Investment securities, Continuous unrealized loss position, 12 Months or More, Fair Value	6	7
Investment securities, Continuous unrealized loss position, 12 Months or More, Gross Unrealized Depreciation	1	1
Investment securities, Continuous unrealized loss position, Fair Value, Total	6	7
Investment securities, Continuous unrealized loss position, Gross Unrealized Depreciation, Total	1	1
Commercial Mortgage-backed Securities [Member] | Taxable [Member] | Fixed Maturities [Member]
Investment Holdings [Line Items]
Investment securities, Continuous unrealized loss position, Less Than 12 Months, Fair Value	14	106
Investment securities, Continuous unrealized loss position, 12 Months or More, Fair Value	83	67
Investment securities, Continuous unrealized loss position, 12 Months or More, Gross Unrealized Depreciation	1	1
Investment securities, Continuous unrealized loss position, Fair Value, Total	97	173
Investment securities, Continuous unrealized loss position, Gross Unrealized Depreciation, Total	$ 1	$ 1

XML

General

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

General

1) General

The accompanying condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) and include the accounts of The Chubb Corporation (Chubb) and its subsidiaries (collectively, the Corporation). Significant intercompany transactions have been eliminated in consolidation.

The amounts included in this report are unaudited but include those adjustments, consisting of normal recurring items, that management considers necessary for a fair presentation. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes in the Notes to Consolidated Financial Statements included in Chubb’s Annual Report on Form 10-K for the year ended December 31, 2014.

XML

Comprehensive Income - Components of Other Comprehensive Income or Loss (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net unrealized holding gains arising during the period, Before Tax	$ 168	$ 424
Reclassification adjustment for net realized gains included in net income, Before Tax	1	63
Change in unrealized appreciation of fixed maturities and equity securities	167	361
Postretirement benefit gain not yet recognized in net income arising during the year, Before Tax	9
Reclassification adjustment for the amortization of net actuarial loss and prior service cost included in net income, Before Tax	(16)	(9)
Net change in postretirement benefit costs not yet recognized in net income, Before Tax	25	9
Foreign currency translation losses, Before Tax	(270)	(28)
Total other comprehensive income (loss), Before Tax	(78)	342
Net unrealized holding gains arising during the period, Income Tax	58	148
Reclassification adjustment for net realized gains included in net income, Income Tax		22
Net unrealized gains recognized in other comprehensive income, Income Tax	58	126
Postretirement benefit gain not yet recognized in net income arising during the year, Income Tax	3
Reclassification adjustment for the amortization of net actuarial loss and prior service cost included in net income, Income Tax	(5)	(3)
Net change in postretirement benefit costs not yet recognized in net income, Income Tax	8	3
Foreign currency translation losses, Income Tax	(94)	(9)
Total other comprehensive income (loss), Income Tax	(28)	120
Net unrealized holding gains arising during the period, Net of Tax	110	276
Reclassification adjustment for net realized gains included in net income, Net of Tax	1	41
Net unrealized gains recognized in other comprehensive income, Net of Tax	109	235
Postretirement benefit gain not yet recognized in net income arising during the year, Net of Tax	6
Reclassification adjustment for the amortization of net actuarial loss and prior service cost included in net income, Net of Tax	(11)	(6)
Net change in postretirement benefit costs not yet recognized in net income, Net of Tax	17	6
Foreign currency translation losses, Net of Tax	(176)	(19)
Total Other Comprehensive Income (Loss) Net of Tax	$ (50)	$ 222

XML

Invested Assets - Realized Investment Gains and Losses (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Fixed maturities, Gross realized gains	$ 13	$ 8
Fixed maturities, Gross realized losses	(5)	(11)
Fixed maturities, Other-than-temporary impairment losses	(1)
Total fixed maturities	7	(3)
Equity securities, Gross realized gains	16	66
Equity securities, Other-than-temporary impairment losses	(22)
Total equity securities	(6)	66
Other invested assets	10	53
Total Realized Investment Gains, Net	$ 11	$ 116

XML

Segments Information - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2015 Operations Business_Unit
Segment Reporting [Abstract]
Number of segment operations	2
Number of business units	4

XML

Segments Information - Revenues and Income Before Income Tax of Each Operating Segment (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenues
Net Premiums earned	$ 3,105	$ 3,029
Investment Income	339	358
Corporate and other	9	10
Realized investment gains, net	11	116
Total Revenues	3,457	3,506
Insurance underwriting income (loss)	188	195
Increase in deferred policy acquisition costs	17	13
Underwriting income	205	208
Total property and casualty insurance	533	547
Corporate and other	(62)	(60)
Realized investment gains, net	11	116
Income Before Federal and Foreign Income Tax	482	603
Property and Casualty Insurance [Member]
Revenues
Investment Income	332	351
Total Revenues	3,437	3,380
Investment income	321	341
Other income (charges)	7	(2)
Operating Segments [Member] | Personal Insurance [Member]
Revenues
Premiums earned related to insurance business	1,113	1,076
Insurance underwriting income (loss)	(30)	2
Operating Segments [Member] | Commercial Insurance [Member]
Revenues
Premiums earned related to insurance business	1,342	1,300
Insurance underwriting income (loss)	91	111
Operating Segments [Member] | Specialty Insurance [Member]
Revenues
Premiums earned related to insurance business	650	653
Insurance underwriting income (loss)	$ 127	$ 82

XML

Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Cash Flows from Operating Activities
Net Income	$ 375	$ 449
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities
Increase in Unpaid Losses and Loss Expenses, Net	260	51
Increase in Unearned Premiums, Net	1	33
Amortization of Premiums and Discounts on Fixed Maturities	54	46
Depreciation	12	14
Realized Investment Gains, Net	(11)	(116)
Other, Net	(161)	(105)
Net Cash Provided by Operating Activities	530	372
Cash Flows from Investing Activities
Proceeds from Fixed Maturities - Sales	1,436	379
Proceeds from Fixed Maturities - Maturities, Calls and Redemptions	820	957
Proceeds from Sales of Equity Securities	29	101
Purchases of Fixed Maturities	(2,421)	(1,810)
Purchases of Equity Securities	(24)	(89)
Investments in Other Invested Assets, Net	17	98
Decrease in Short Term Investments, Net	82	417
Change in Receivable or Payable from Security Transactions Not Settled, Net	5	105
Purchases of Property and Equipment, Net	(18)	(10)
Other, Net		(3)
Net Cash Provided by (Used in) Investing Activities	(74)	145
Cash Flows from Financing Activities
Decrease in Funds Held Under Deposit Contracts	(1)	(1)
Proceeds from Issuance of Common Stock Under Stock-Based Employee Compensation Plans	5	14
Repurchase of Shares	(338)	(415)
Dividends Paid to Shareholders	(117)	(110)
Net Cash Used in Financing Activities	(451)	(512)
Net Increase in Cash	5	5
Cash at Beginning of Year	47	52
Cash at End of Period	$ 52	$ 57

XML

Fair Values of Financial Instruments - Carrying Values and Fair Values of Financial Instruments (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short Term Investments	$ 1,220	$ 1,318
Fixed maturities	38,457	38,780
Equity securities	1,964	1,964
Long Term Debt	3,300	3,300
Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short Term Investments	1,220	1,318
Fixed maturities	38,457	38,780
Equity securities	1,964	1,964
Long Term Debt	3,300	3,300
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short Term Investments	1,220	1,318
Fixed maturities	38,457	38,780
Equity securities	1,964	1,964
Long Term Debt	$ 4,046	$ 4,013

XML

Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenues
Premiums Earned	$ 3,105	$ 3,029
Investment Income	339	358
Other Revenues	2	3
Realized Investment Gains (Losses), Net
Total Other-Than-Temporary Impairment Losses on Investments	(23)
Other Realized Investment Gains, Net	34	116
Total Realized Investment Gains, Net	11	116
Total Revenues	3,457	3,506
Losses and Expenses
Losses and Loss Expenses	1,920	1,845
Amortization of Deferred Policy Acquisition Costs	626	622
Other Insurance Operating Costs and Expenses	347	356
Investment Expenses	12	11
Other Expenses	4	5
Corporate Expenses	66	64
Total Losses and Expenses	2,975	2,903
Income Before Federal and Foreign Income Tax	482	603
Federal and Foreign Income Tax	107	154
Net Income	$ 375	$ 449
Net Income Per Share
Basic	$ 1.61	$ 1.81
Diluted	$ 1.60	$ 1.80
Dividends Declared Per Share	$ 0.57	$ 0.50

XML

Consolidated Statements of Shareholders' Equity (USD $) In Millions	Total	Common Stock [Member]	Paid-In-Surplus [Member]	Retained Earnings [Member]	Unrealized Appreciation of Investments Including Unrealized Other-Than-Temporary Impairment Losses [Member]	Postretirement Benefit Costs Not Yet Recognized in Net Income [Member]	Foreign Currency Translation Gains (Losses) [Member]	Accumulated Other Comprehensive Income [Member]	Treasury Stock, at Cost [Member]
Balance, Beginning of Year at Dec. 31, 2013			$ 171	$ 21,902	$ 1,225	$ (253)	$ 63		$ (7,383)
Net Income	449			449
Repurchase of Shares									(409)
Changes Related to Stock-Based Employee Compensation (includes tax benefit of $3 and $14)			(63)
Change During Period, Net of Tax	222				235	6	(19)
Dividends Declared (per share $.57 and $.50)				(124)
Shares Issued Under Stock-Based Employee Compensation Plans									54
Balance, End of Period at Mar. 31, 2014	16,226	372	108	22,227	1,460	(247)	44	1,257	(7,738)
Balance, Beginning of Year at Dec. 31, 2014	16,296		171	23,520	1,753	(589)	(54)		(8,877)
Net Income	375			375
Repurchase of Shares									(326)
Changes Related to Stock-Based Employee Compensation (includes tax benefit of $3 and $14)			(36)
Change During Period, Net of Tax	(50)				109	17	(176)
Dividends Declared (per share $.57 and $.50)				(133)
Shares Issued Under Stock-Based Employee Compensation Plans									36
Balance, End of Period at Mar. 31, 2015	$ 16,162	$ 372	$ 135	$ 23,762	$ 1,862	$ (572)	$ (230)	$ 1,060	$ (9,167)

XML

Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Basic earnings per share:
Net Income	$ 375	$ 449
Weighted average shares outstanding	233.5	248.6
Basic earnings per share	$ 1.61	$ 1.81
Diluted earnings per share:
Net Income	$ 375	$ 449
Weighted average shares outstanding	233.5	248.6
Additional shares from assumed issuance of shares under stock-based compensation awards	0.7	0.6
Weighted average shares and potential shares assumed outstanding for computing diluted earnings per share	234.2	249.2
Diluted earnings per share	$ 1.60	$ 1.80

XML

Invested Assets - Amortized Cost and Fair Value of Fixed Maturities and Equity Securities (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Investment Holdings [Line Items]
Fixed maturities, Amortized Cost	$ 36,483	$ 36,958
Fixed maturities, Gross Unrealized Appreciation	2,022	1,884
Fixed maturities, Gross Unrealized Depreciation	48	62
Fixed maturities, Fair Value	38,457	38,780
Equity securities, Amortized Cost	1,074	1,089
Equity securities, Gross Unrealized Appreciation	900	894
Equity securities, Gross Unrealized Depreciation	10	19
Equity securities, Fair Value	1,964	1,964
Tax Exempt [Member]
Investment Holdings [Line Items]
Fixed maturities, Amortized Cost	19,260	18,614
Fixed maturities, Gross Unrealized Appreciation	1,179	1,174
Fixed maturities, Gross Unrealized Depreciation	24	16
Fixed maturities, Fair Value	20,415	19,772
Taxable [Member]
Investment Holdings [Line Items]
Fixed maturities, Amortized Cost	17,223	18,344
Fixed maturities, Gross Unrealized Appreciation	843	710
Fixed maturities, Gross Unrealized Depreciation	24	46
Fixed maturities, Fair Value	18,042	19,008
Taxable [Member] | Residential Mortgage-backed Securities [Member]
Investment Holdings [Line Items]
Fixed maturities, Amortized Cost	175	192
Fixed maturities, Gross Unrealized Appreciation	20	20
Fixed maturities, Gross Unrealized Depreciation	1	1
Fixed maturities, Fair Value	194	211
Taxable [Member] | Commercial Mortgage-backed Securities [Member]
Investment Holdings [Line Items]
Fixed maturities, Amortized Cost	988	1,069
Fixed maturities, Gross Unrealized Appreciation	27	22
Fixed maturities, Gross Unrealized Depreciation	1	1
Fixed maturities, Fair Value	1,014	1,090
Taxable [Member] | U.S. Government and Government Agency and Authority Obligations [Member]
Investment Holdings [Line Items]
Fixed maturities, Amortized Cost	1,460	1,962
Fixed maturities, Gross Unrealized Appreciation	59	46
Fixed maturities, Gross Unrealized Depreciation	1	1
Fixed maturities, Fair Value	1,518	2,007
Taxable [Member] | Corporate Bonds [Member]
Investment Holdings [Line Items]
Fixed maturities, Amortized Cost	8,756	8,741
Fixed maturities, Gross Unrealized Appreciation	402	327
Fixed maturities, Gross Unrealized Depreciation	19	40
Fixed maturities, Fair Value	9,139	9,028
Taxable [Member] | Foreign Government and Government Agency Obligations [Member]
Investment Holdings [Line Items]
Fixed maturities, Amortized Cost	5,844	6,380
Fixed maturities, Gross Unrealized Appreciation	335	295
Fixed maturities, Gross Unrealized Depreciation	2	3
Fixed maturities, Fair Value	$ 6,177	$ 6,672

XML

Invested Assets - Components of Unrealized Appreciation or Depreciation of Investments (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Fixed maturities, Gross Unrealized Appreciation	$ 2,022	$ 1,884
Fixed maturities, Gross Unrealized Depreciation	48	62
Fixed maturities, Unrealized appreciation (depreciation), Net	1,974	1,822
Equity securities, Gross Unrealized Appreciation	900	894
Equity securities, Gross Unrealized Depreciation	10	19
Equity securities, Unrealized appreciation (depreciation), Net	890	875
Total fixed maturities and equity securities, Unrealized appreciation (depreciation), Net	2,864	2,697
Deferred income tax liability	1,002	944
Total fixed maturities and equity securities, Unrealized appreciation (depreciation), Net of tax	$ 1,862	$ 1,753

XML

Consolidated Statements of Shareholders' Equity (Parenthetical) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Dividends Declared Per Share	$ 0.57	$ 0.50
Paid-In-Surplus [Member]
Tax benefit, Stock-Based Employee Compensation	$ 3	$ 14
Retained Earnings [Member]
Dividends Declared Per Share	$ 0.57	$ 0.50

XML

Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net Income	$ 375	$ 449
Other Comprehensive Income (Loss), Net of Tax
Change in Unrealized Appreciation of Investments	109	235
Change in Postretirement Benefit Costs Not Yet Recognized in Net Income	17	6
Foreign Currency Translation Losses	(176)	(19)
Total Other Comprehensive Income (Loss) Net of Tax	(50)	222
Comprehensive Income	$ 325	$ 671

XML

Invested Assets (Tables)

3 Months Ended

Mar. 31, 2015

Text Block [Abstract]

Amortized Cost and Fair Value of Fixed Maturities and Equity Securities

(a) The amortized cost and fair value of fixed maturities and equity securities were as follows:

	March 31, 2015
	Amortized Cost		Gross Unrealized Appreciation		Gross Unrealized Depreciation		Fair Value
	(in millions)
Fixed maturities
Tax exempt	$	19,260	$	1,179	$	24	$	20,415
Taxable
U.S. government and government agency and authority obligations		1,460		59		1		1,518
Corporate bonds		8,756		402		19		9,139
Foreign government and government agency obligations		5,844		335		2		6,177
Residential mortgage-backed securities		175		20		1		194
Commercial mortgage-backed securities		988		27		1		1,014
		17,223		843		24		18,042
Total fixed maturities	$	36,483	$	2,022	$	48	$	38,457
Equity securities	$	1,074	$	900	$	10	$	1,964

	December 31, 2014
	Amortized Cost		Gross Unrealized Appreciation		Gross Unrealized Depreciation		Fair Value
	(in millions)
Fixed maturities
Tax exempt	$	18,614	$	1,174	$	16	$	19,772
Taxable
U.S. government and government agency and authority obligations		1,962		46		1		2,007
Corporate bonds		8,741		327		40		9,028
Foreign government and government agency obligations		6,380		295		3		6,672
Residential mortgage-backed securities		192		20		1		211
Commercial mortgage-backed securities		1,069		22		1		1,090
		18,344		710		46		19,008
Total fixed maturities	$	36,958	$	1,884	$	62	$	38,780
Equity securities	$	1,089	$	894	$	19	$	1,964

Fair Value and Amortized Cost of Fixed Maturities by Contractual Maturity

The fair value and amortized cost of fixed maturities at March 31, 2015 by contractual maturity were as follows:

	Fair Value		Amortized Cost
	(in millions)
Due in one year or less	$	2,460	$	2,438
Due after one year through five years		12,329		11,794
Due after five years through ten years		13,321		12,449
Due after ten years		9,139		8,639
		37,249		35,320
Residential mortgage-backed securities		194		175
Commercial mortgage-backed securities		1,014		988
	$	38,457	$	36,483

Components of Unrealized Appreciation or Depreciation of Investments

(b) The components of unrealized appreciation or depreciation, including unrealized other-than-temporary impairment losses, of investments carried at fair value were as follows:

	March 31 2015		December 31 2014
	(in millions)
Fixed maturities
Gross unrealized appreciation	$	2,022	$	1,884
Gross unrealized depreciation		48		62
		1,974		1,822
Equity securities
Gross unrealized appreciation		900		894
Gross unrealized depreciation		10		19
		890		875
		2,864		2,697
Deferred income tax liability		1,002		944
	$	1,862	$	1,753

Fair Value and Gross Unrealized Depreciation of Investments in Unrealized Loss Position

The following table summarizes, for all investment securities in an unrealized loss position at March 31, 2015, the aggregate fair value and gross unrealized depreciation, including unrealized other-than-temporary impairment losses, by investment category and length of time that individual securities have continuously been in an unrealized loss position.

	Less Than 12 Months				12 Months or More				Total
	Fair Value		Gross Unrealized Depreciation		Fair Value		Gross Unrealized Depreciation		Fair Value		Gross Unrealized Depreciation
	(in millions)
Fixed maturities
Tax exempt	$	1,103	$	9	$	219	$	15	$	1,322	$	24
Taxable
U.S. government and government agency and authority obligations		170		1		10		—		180		1
Corporate bonds		474		15		311		4		785		19
Foreign government and government agency obligations		344		2		77		—		421		2
Residential mortgage-backed securities		—		—		6		1		6		1
Commercial mortgage-backed securities		14		—		83		1		97		1
		1,002		18		487		6		1,489		24
Total fixed maturities		2,105		27		706		21		2,811		48
Equity securities		59		7		3		3		62		10
	$	2,164	$	34	$	709	$	24	$	2,873	$	58

At March 31, 2015, approximately 580 individual fixed maturities and 15 individual equity securities were in an unrealized loss position. The Corporation does not have the intent to sell and it is not more likely than not that the Corporation will be required to sell these fixed maturities before the securities recover to their amortized cost value. In addition, the Corporation believes that none of the declines in the fair values of these fixed maturities relate to credit losses. The Corporation has the intent and ability to hold the equity securities in an unrealized loss position for a period of time sufficient to allow for the recovery of cost. The Corporation believes that none of the declines in the fair value of these fixed maturities and equity securities were other than temporary at March 31, 2015.

The following table summarizes, for all investment securities in an unrealized loss position at December 31, 2014, the aggregate fair value and gross unrealized depreciation, including unrealized other-than-temporary impairment losses, by investment category and length of time that individual securities have continuously been in an unrealized loss position.

	Less Than 12 Months				12 Months or More				Total
	Fair Value		Gross Unrealized Depreciation		Fair Value		Gross Unrealized Depreciation		Fair Value		Gross Unrealized Depreciation
	(in millions)
Fixed maturities
Tax exempt	$	422	$	3	$	305	$	13	$	727	$	16
Taxable
U.S. government and government agency and authority obligations		936		1		36		—		972		1
Corporate bonds		1,327		23		888		17		2,215		40
Foreign government and government agency obligations		318		1		207		2		525		3
Residential mortgage-backed securities		—		—		7		1		7		1
Commercial mortgage-backed securities		106		—		67		1		173		1
		2,687		25		1,205		21		3,892		46
Total fixed maturities		3,109		28		1,510		34		4,619		62
Equity securities		67		11		11		8		78		19
	$	3,176	$	39	$	1,521	$	42	$	4,697	$	81

Change in Unrealized Appreciation or Depreciation of Investments Carried at Fair Value

The change in unrealized appreciation or depreciation of investments carried at fair value, including the change in unrealized other-than-temporary impairment losses, was as follows:

	Three Months Ended March 31
	2015		2014
	(in millions)
Change in unrealized appreciation of fixed maturities	$	152	$	362
Change in unrealized appreciation of equity securities		15		(1	)
		167		361
Deferred income tax		58		126
	$	109	$	235

Realized Investment Gains and Losses

(c) Realized investment gains and losses were as follows:

	Three Months Ended March 31
	2015			2014
	(in millions)
Fixed maturities
Gross realized gains	$	13		$	8
Gross realized losses		(5	)		(11	)
Other-than-temporary impairment losses		(1	)		—
		7			(3	)
Equity securities
Gross realized gains		16			66
Other-than-temporary impairment losses		(22	)		—
		(6	)		66
Other invested assets		10			53
	$	11		$	116

XML

Document and Entity Information	3 Months Ended
	Mar. 31, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Trading Symbol	CB
Entity Registrant Name	CHUBB CORP
Entity Central Index Key	0000020171
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	229,752,692

XML

Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2015

Equity [Abstract]

Components of Other Comprehensive Income or Loss

The components of other comprehensive income or loss were as follows:

	Three Months Ended March 31, 2015
	Before Tax			Income Tax			Net of Tax
	(in millions)
Net unrealized holding gains arising during the period	$	168		$	58		$	110
Reclassification adjustment for net realized gains included in net income		1			0			1
Net unrealized gains recognized in other comprehensive income		167			58			109
Postretirement benefit gain not yet recognized in net income arising during the year		9			3			6
Reclassification adjustment for the amortization of net actuarial loss and prior service cost included in net income (a)		(16	)		(5	)		(11	)
Net change in postretirement benefit costs not yet recognized in net income		25			8			17
Foreign currency translation losses		(270	)		(94	)		(176	)
Total other comprehensive loss	$	(78	)	$	(28	)	$	(50	)
	Three Months Ended March 31, 2014
	Before Tax			Income Tax			Net of Tax
	(in millions)
Net unrealized holding gains arising during the period	$	424		$	148		$	276
Reclassification adjustment for net realized gains included in net income		63			22			41
Net unrealized gains recognized in other comprehensive income		361			126			235
Reclassification adjustment for the amortization of net actuarial loss and prior service cost included in net income (a)		(9	)		(3	)		(6	)
Net change in postretirement benefit costs not yet recognized in net income		9			3			6
Foreign currency translation losses		(28	)		(9	)		(19	)
Total other comprehensive income	$	342		$	120		$	222

(a) Postretirement benefit costs recognized in net income during the period are included among several of the loss and expense components presented in the consolidated statements of income.

XML

Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Assets
Short Term Investments	$ 1,220	$ 1,318
Fixed Maturities (cost $36,483 and $36,958)	38,457	38,780
Equity Securities (cost $1,074 and $1,089)	1,964	1,964
Other Invested Assets	1,408	1,423
TOTAL INVESTED ASSETS	43,049	43,485
Cash	52	47
Accrued Investment Income	406	410
Premiums Receivable	2,434	2,560
Reinsurance Recoverable on Unpaid Losses and Loss Expenses	1,583	1,639
Prepaid Reinsurance Premiums	249	256
Deferred Policy Acquisition Costs	1,280	1,284
Goodwill	467	467
Other Assets	1,332	1,138
TOTAL ASSETS	50,852	51,286
Liabilities
Unpaid Losses and Loss Expenses	22,515	22,678
Unearned Premiums	6,463	6,581
Long Term Debt	3,300	3,300
Dividend Payable to Shareholders	133	117
Deferred Income Tax	50	15
Accrued Expenses and Other Liabilities	2,229	2,299
TOTAL LIABILITIES	34,690	34,990
Shareholders' Equity
Common Stock - $1 Par Value; 371,980,460 Shares	372	372
Paid-In Surplus	135	171
Retained Earnings	23,762	23,520
Accumulated Other Comprehensive Income	1,060	1,110
Treasury Stock, at Cost - 142,227,768 and 139,551,071 Shares	(9,167)	(8,877)
TOTAL SHAREHOLDERS' EQUITY	16,162	16,296
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 50,852	$ 51,286

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Comprehensive Income

3 Months Ended

Mar. 31, 2015

Equity [Abstract]

Comprehensive Income

4) Comprehensive Income

Comprehensive income is defined as all changes in shareholders’ equity, except those arising from transactions with shareholders. Comprehensive income includes net income and other comprehensive income or loss, which for the Corporation consists of changes in unrealized appreciation or depreciation of investments carried at fair value, changes in unrealized other-than-temporary impairment losses of fixed maturities, changes in postretirement benefit costs not yet recognized in net income and changes in foreign currency translation gains or losses.

The components of other comprehensive income or loss were as follows:

	Three Months Ended March 31, 2015
	Before Tax			Income Tax			Net of Tax
	(in millions)
Net unrealized holding gains arising during the period	$	168		$	58		$	110
Reclassification adjustment for net realized gains included in net income		1			0			1
Net unrealized gains recognized in other comprehensive income		167			58			109
Postretirement benefit gain not yet recognized in net income arising during the year		9			3			6
Reclassification adjustment for the amortization of net actuarial loss and prior service cost included in net income (a)		(16	)		(5	)		(11	)
Net change in postretirement benefit costs not yet recognized in net income		25			8			17
Foreign currency translation losses		(270	)		(94	)		(176	)
Total other comprehensive loss	$	(78	)	$	(28	)	$	(50	)
	Three Months Ended March 31, 2014
	Before Tax			Income Tax			Net of Tax
	(in millions)
Net unrealized holding gains arising during the period	$	424		$	148		$	276
Reclassification adjustment for net realized gains included in net income		63			22			41
Net unrealized gains recognized in other comprehensive income		361			126			235
Reclassification adjustment for the amortization of net actuarial loss and prior service cost included in net income (a)		(9	)		(3	)		(6	)
Net change in postretirement benefit costs not yet recognized in net income		9			3			6
Foreign currency translation losses		(28	)		(9	)		(19	)
Total other comprehensive income	$	342		$	120		$	222

(a) Postretirement benefit costs recognized in net income during the period are included among several of the loss and expense components presented in the consolidated statements of income.

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Invested Assets

3 Months Ended

Mar. 31, 2015

Text Block [Abstract]

Invested Assets

3) Invested Assets

(a) The amortized cost and fair value of fixed maturities and equity securities were as follows:

	March 31, 2015
	Amortized Cost		Gross Unrealized Appreciation		Gross Unrealized Depreciation		Fair Value
	(in millions)
Fixed maturities
Tax exempt	$	19,260	$	1,179	$	24	$	20,415
Taxable
U.S. government and government agency and authority obligations		1,460		59		1		1,518
Corporate bonds		8,756		402		19		9,139
Foreign government and government agency obligations		5,844		335		2		6,177
Residential mortgage-backed securities		175		20		1		194
Commercial mortgage-backed securities		988		27		1		1,014
		17,223		843		24		18,042
Total fixed maturities	$	36,483	$	2,022	$	48	$	38,457
Equity securities	$	1,074	$	900	$	10	$	1,964

	December 31, 2014
	Amortized Cost		Gross Unrealized Appreciation		Gross Unrealized Depreciation		Fair Value
	(in millions)
Fixed maturities
Tax exempt	$	18,614	$	1,174	$	16	$	19,772
Taxable
U.S. government and government agency and authority obligations		1,962		46		1		2,007
Corporate bonds		8,741		327		40		9,028
Foreign government and government agency obligations		6,380		295		3		6,672
Residential mortgage-backed securities		192		20		1		211
Commercial mortgage-backed securities		1,069		22		1		1,090
		18,344		710		46		19,008
Total fixed maturities	$	36,958	$	1,884	$	62	$	38,780
Equity securities	$	1,089	$	894	$	19	$	1,964

The fair value and amortized cost of fixed maturities at March 31, 2015 by contractual maturity were as follows:

	Fair Value		Amortized Cost
	(in millions)
Due in one year or less	$	2,460	$	2,438
Due after one year through five years		12,329		11,794
Due after five years through ten years		13,321		12,449
Due after ten years		9,139		8,639
		37,249		35,320
Residential mortgage-backed securities		194		175
Commercial mortgage-backed securities		1,014		988
	$	38,457	$	36,483

Actual maturities could differ from contractual maturities because borrowers may have the right to call or prepay obligations.

The Corporation’s equity securities comprise a diversified portfolio of primarily U.S. publicly-traded common stocks.

The Corporation is involved in the normal course of business with VIEs primarily as a passive investor in residential mortgage-backed securities, commercial mortgage-backed securities and private equity limited partnerships issued by third party VIEs. The Corporation is not the primary beneficiary of these VIEs. The Corporation’s maximum exposure to loss with respect to these investments is limited to the investment carrying values included in the Corporation’s consolidated balance sheet and any unfunded partnership commitments.

(b) The components of unrealized appreciation or depreciation, including unrealized other-than-temporary impairment losses, of investments carried at fair value were as follows:

	March 31 2015		December 31 2014
	(in millions)
Fixed maturities
Gross unrealized appreciation	$	2,022	$	1,884
Gross unrealized depreciation		48		62
		1,974		1,822
Equity securities
Gross unrealized appreciation		900		894
Gross unrealized depreciation		10		19
		890		875
		2,864		2,697
Deferred income tax liability		1,002		944
	$	1,862	$	1,753

The following table summarizes, for all investment securities in an unrealized loss position at March 31, 2015, the aggregate fair value and gross unrealized depreciation, including unrealized other-than-temporary impairment losses, by investment category and length of time that individual securities have continuously been in an unrealized loss position.

	Less Than 12 Months				12 Months or More				Total
	Fair Value		Gross Unrealized Depreciation		Fair Value		Gross Unrealized Depreciation		Fair Value		Gross Unrealized Depreciation
	(in millions)
Fixed maturities
Tax exempt	$	1,103	$	9	$	219	$	15	$	1,322	$	24
Taxable
U.S. government and government agency and authority obligations		170		1		10		—		180		1
Corporate bonds		474		15		311		4		785		19
Foreign government and government agency obligations		344		2		77		—		421		2
Residential mortgage-backed securities		—		—		6		1		6		1
Commercial mortgage-backed securities		14		—		83		1		97		1
		1,002		18		487		6		1,489		24
Total fixed maturities		2,105		27		706		21		2,811		48
Equity securities		59		7		3		3		62		10
	$	2,164	$	34	$	709	$	24	$	2,873	$	58

At March 31, 2015, approximately 580 individual fixed maturities and 15 individual equity securities were in an unrealized loss position. The Corporation does not have the intent to sell and it is not more likely than not that the Corporation will be required to sell these fixed maturities before the securities recover to their amortized cost value. In addition, the Corporation believes that none of the declines in the fair values of these fixed maturities relate to credit losses. The Corporation has the intent and ability to hold the equity securities in an unrealized loss position for a period of time sufficient to allow for the recovery of cost. The Corporation believes that none of the declines in the fair value of these fixed maturities and equity securities were other than temporary at March 31, 2015.

The following table summarizes, for all investment securities in an unrealized loss position at December 31, 2014, the aggregate fair value and gross unrealized depreciation, including unrealized other-than-temporary impairment losses, by investment category and length of time that individual securities have continuously been in an unrealized loss position.

	Less Than 12 Months				12 Months or More				Total
	Fair Value		Gross Unrealized Depreciation		Fair Value		Gross Unrealized Depreciation		Fair Value		Gross Unrealized Depreciation
	(in millions)
Fixed maturities
Tax exempt	$	422	$	3	$	305	$	13	$	727	$	16
Taxable
U.S. government and government agency and authority obligations		936		1		36		—		972		1
Corporate bonds		1,327		23		888		17		2,215		40
Foreign government and government agency obligations		318		1		207		2		525		3
Residential mortgage-backed securities		—		—		7		1		7		1
Commercial mortgage-backed securities		106		—		67		1		173		1
		2,687		25		1,205		21		3,892		46
Total fixed maturities		3,109		28		1,510		34		4,619		62
Equity securities		67		11		11		8		78		19
	$	3,176	$	39	$	1,521	$	42	$	4,697	$	81

The change in unrealized appreciation or depreciation of investments carried at fair value, including the change in unrealized other-than-temporary impairment losses, was as follows:

	Three Months Ended March 31
	2015		2014
	(in millions)
Change in unrealized appreciation of fixed maturities	$	152	$	362
Change in unrealized appreciation of equity securities		15		(1	)
		167		361
Deferred income tax		58		126
	$	109	$	235

(c) Realized investment gains and losses were as follows:

	Three Months Ended March 31
	2015			2014
	(in millions)
Fixed maturities
Gross realized gains	$	13		$	8
Gross realized losses		(5	)		(11	)
Other-than-temporary impairment losses		(1	)		—
		7			(3	)
Equity securities
Gross realized gains		16			66
Other-than-temporary impairment losses		(22	)		—
		(6	)		66
Other invested assets		10			53
	$	11		$	116

(d) As of March 31, 2015 and December 31, 2014, fixed maturities still held by the Corporation for which a portion of their other-than-temporary impairment losses were recognized in other comprehensive income had cumulative credit-related losses of $17 million and $18 million, respectively, recognized in net income.

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Invested Assets - Fair Value and Amortized Cost of Fixed Maturities by Contractual Maturity (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Schedule of Available-For-Sale Securities [Line Items]
Due in one year or less, Fair Value	$ 2,460
Due after one year through five years, Fair Value	12,329
Due after five years through ten years, Fair Value	13,321
Due after ten years, Fair Value	9,139
Subtotal fixed maturities, Fair Value	37,249
Total fixed maturities, Fair Value	38,457	38,780
Due in one year or less, Amortized Cost	2,438
Due after one year through five years, Amortized Cost	11,794
Due after five years through ten years, Amortized Cost	12,449
Due after ten years, Amortized Cost	8,639
Subtotal fixed maturities, Amortized Cost	35,320
Fixed maturities, Amortized Cost	36,483	36,958
Residential Mortgage-backed Securities [Member]
Schedule of Available-For-Sale Securities [Line Items]
Taxable, Fair Value	194
Taxable, Amortized Cost	175
Commercial Mortgage-backed Securities [Member]
Schedule of Available-For-Sale Securities [Line Items]
Taxable, Fair Value	1,014
Taxable, Amortized Cost	$ 988

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Segments Information (Tables)

3 Months Ended

Mar. 31, 2015

Segment Reporting [Abstract]

Revenues and Income Before Income Tax of Each Operating Segment

Revenues and income before income tax of each operating segment were as follows:

	Three Months Ended March 31
	2015			2014
	(in millions)
Revenues
Property and casualty insurance
Premiums earned
Personal insurance	$	1,113		$	1,076
Commercial insurance		1,342			1,300
Specialty insurance		650			653
Total insurance		3,105			3,029
Investment income		332			351
Total property and casualty insurance		3,437			3,380
Corporate and other		9			10
Realized investment gains, net		11			116
Total revenues	$	3,457		$	3,506
Income (loss) before income tax
Property and casualty insurance
Underwriting
Personal insurance	$	(30	)	$	2
Commercial insurance		91			111
Specialty insurance		127			82
Total insurance		188			195
Increase in deferred policy acquisition costs		17			13
Underwriting income		205			208
Investment income		321			341
Other income (charges)		7			(2	)
Total property and casualty insurance		533			547
Corporate and other		(62	)		(60	)
Realized investment gains, net		11			116
Total income before income tax	$	482		$	603

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Earnings Per Share

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Earnings Per Share

7) Earnings Per Share

The following table sets forth the computation of basic and diluted earnings per share:

	Three Months Ended March 31
	2015		2014
	(in millions, except for per share amounts)
Basic earnings per share:
Net income	$	375	$	449
Weighted average shares outstanding		233.5		248.6
Basic earnings per share	$	1.61	$	1.81
Diluted earnings per share:
Net income	$	375	$	449
Weighted average shares outstanding		233.5		248.6
Additional shares from assumed issuance of shares under stock-based compensation awards		.7		.6
Weighted average shares and potential shares assumed outstanding for computing diluted earnings per share		234.2		249.2
Diluted earnings per share	$	1.60	$	1.80

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Segments Information

3 Months Ended

Mar. 31, 2015

Segment Reporting [Abstract]

Segments Information

5) Segments Information

The principal business of the Corporation is the sale of property and casualty insurance. The profitability of the property and casualty insurance business depends on the results of both underwriting operations and investments, which are viewed as two distinct operations. The underwriting operations are managed and evaluated separately from the investment function.

The property and casualty insurance subsidiaries underwrite most lines of property and casualty insurance. Underwriting operations consist of four separate business units: personal insurance, commercial insurance, specialty insurance and reinsurance assumed. The personal segment targets the personal insurance market. The personal classes include automobile, homeowners and other personal coverages. The commercial segment includes those classes of business that are generally available in broad markets and are of a more commodity nature. Commercial classes include multiple peril, casualty, workers’ compensation and property and marine. The specialty segment includes those classes of business that are available in more limited markets since they require specialized underwriting and claim settlement. Specialty classes include professional liability coverages and surety. The reinsurance assumed business has been in runoff since the transfer of the ongoing reinsurance assumed business to a reinsurance company in 2005.

Corporate and other includes investment income earned on corporate invested assets, corporate expenses and the results of the Corporation’s non-insurance subsidiaries.

Revenues and income before income tax of each operating segment were as follows:

	Three Months Ended March 31
	2015			2014
	(in millions)
Revenues
Property and casualty insurance
Premiums earned
Personal insurance	$	1,113		$	1,076
Commercial insurance		1,342			1,300
Specialty insurance		650			653
Total insurance		3,105			3,029
Investment income		332			351
Total property and casualty insurance		3,437			3,380
Corporate and other		9			10
Realized investment gains, net		11			116
Total revenues	$	3,457		$	3,506
Income (loss) before income tax
Property and casualty insurance
Underwriting
Personal insurance	$	(30	)	$	2
Commercial insurance		91			111
Specialty insurance		127			82
Total insurance		188			195
Increase in deferred policy acquisition costs		17			13
Underwriting income		205			208
Investment income		321			341
Other income (charges)		7			(2	)
Total property and casualty insurance		533			547
Corporate and other		(62	)		(60	)
Realized investment gains, net		11			116
Total income before income tax	$	482		$	603

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Fair Values of Financial Instruments

3 Months Ended

Mar. 31, 2015

Fair Value Disclosures [Abstract]

Fair Values of Financial Instruments

6) Fair Values of Financial Instruments

Fair values of financial instruments are determined by management using valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs. Fair values are generally measured using quoted prices in active markets for identical assets or liabilities or other inputs, such as quoted prices for similar assets or liabilities, that are observable, either directly or indirectly. In those instances where observable inputs are not available, fair values are measured using unobservable inputs for the asset or liability. Unobservable inputs reflect the Corporation’s own assumptions about the assumptions that market participants would use in pricing the asset or liability and are developed based on the best information available in the circumstances. Fair value estimates derived from unobservable inputs are affected by the assumptions used, including the discount rates and the estimated amounts and timing of future cash flows. The derived fair value estimates cannot be substantiated by comparison to independent markets and are not necessarily indicative of the amounts that would be realized in a current market exchange. Certain financial instruments, particularly insurance contracts, are excluded from fair value disclosure requirements.

The methods and assumptions used to estimate the fair values of financial instruments are as follows:

(i) The carrying value of short term investments approximates fair value due to the short maturities of these investments.

(ii) Fair values of fixed maturities are determined by management, utilizing prices obtained from a third party, nationally recognized pricing service or, in the case of securities for which prices are not provided by a pricing service, from third party brokers. For fixed maturities that have quoted prices in active markets, market quotations are provided. For fixed maturities that do not trade on a daily basis, the pricing service and brokers provide fair value estimates using a variety of inputs including, but not limited to, benchmark yields, reported trades, broker/dealer quotes, issuer spreads, bids, offers, reference data, prepayment rates and measures of volatility. Management reviews on an ongoing basis the reasonableness of the methodologies used by the relevant pricing service and brokers. In addition, management, using the prices received for the securities from the pricing service and brokers, determines the aggregate portfolio price performance and reviews it against applicable indices. If management believes that significant discrepancies exist, it will discuss these with the relevant pricing service or broker to resolve the discrepancies.

(iii) Fair values of equity securities are determined by management, utilizing quoted market prices.

(iv) Fair values of long term debt issued by Chubb are determined by management, utilizing prices obtained from a third party, nationally recognized pricing service.

The carrying values and fair values of financial instruments were as follows:

	March 31, 2015				December 31, 2014
	Carrying Value		Fair Value		Carrying Value		Fair Value
	(in millions)
Assets
Invested assets
Short term investments	$	1,220	$	1,220	$	1,318	$	1,318
Fixed maturities		38,457		38,457		38,780		38,780
Equity securities		1,964		1,964		1,964		1,964
Liabilities
Long term debt		3,300		4,046		3,300		4,013

At March 31, 2015 and December 31, 2014, a pricing service provided fair value amounts for approximately 99% of the Corporation’s fixed maturities. The prices obtained from a pricing service and brokers generally are non-binding, but are reflective of current market transactions in the applicable financial instruments.

At March 31, 2015 and December 31, 2014, the Corporation held an insignificant amount of financial instruments in its investment portfolio for which a lack of market liquidity impacted the determination of fair value.

The fair value hierarchy prioritizes the inputs to valuation techniques used to measure fair value into three broad levels as follows:

Level 1 – Unadjusted quoted prices in active markets for identical financial instruments.

Level 2 – Other inputs that are observable for the financial instrument, either directly or indirectly.

Level 3 – Significant unobservable inputs.

The fair value of financial instruments categorized based upon the lowest level of input that was significant to the fair value measurement was as follows:

	March 31, 2015
	Level 1		Level 2		Level 3		Total
	(in millions)
Assets
Short term investments	$	192	$	1,028	$	—	$	1,220
Fixed maturities
Tax exempt		—		20,413		2		20,415
Taxable
U.S. government and government agency and authority obligations		—		1,518		—		1,518
Corporate bonds		—		8,954		185		9,139
Foreign government and government agency obligations		—		6,169		8		6,177
Residential mortgage-backed securities		—		193		1		194
Commercial mortgage-backed securities		—		1,014		—		1,014
		—		17,848		194		18,042
Total fixed maturities		—		38,261		196		38,457
Equity securities		1,958		—		6		1,964
	$	2,150	$	39,289	$	202	$	41,641
Liabilities
Long term debt	$	—	$	4,046	$	—	$	4,046

	December 31, 2014
	Level 1		Level 2		Level 3		Total
	(in millions)
Assets
Short term investments	$	206	$	1,112	$	—	$	1,318
Fixed maturities
Tax exempt		—		19,769		3		19,772
Taxable
U.S. government and government agency and authority obligations		—		2,007		—		2,007
Corporate bonds		—		8,912		116		9,028
Foreign government and government agency obligations		—		6,663		9		6,672
Residential mortgage-backed securities		—		210		1		211
Commercial mortgage-backed securities		—		1,090		—		1,090
		—		18,882		126		19,008
Total fixed maturities		—		38,651		129		38,780
Equity securities		1,958		—		6		1,964
	$	2,164	$	39,763	$	135	$	42,062
Liabilities
Long term debt	$	—	$	4,013	$	—	$	4,013

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Accounting Pronouncements Not Yet Adopted (Policies)	3 Months Ended
	Mar. 31, 2015
Accounting Changes and Error Corrections [Abstract]
Accounting Pronouncements Not Yet Adopted	In February 2015, the Financial Accounting Standards Board issued updated guidance that amends certain aspects of the current consolidation accounting guidance. In particular, the new guidance modifies the evaluation of whether limited partnerships and similar legal entities are variable interest entities (VIEs) or voting interest entities and eliminates the presumption that a general partner should consolidate a limited partnership. The new guidance would be effective for the Corporation for the year beginning January 1, 2016. The Corporation is in the process of assessing the effect, if any, that the implementation of this guidance will have on its financial position and results of operations.

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Fair Values of Financial Instruments - Fair Value of Financial Instruments Categorized Based Upon Lowest Level of Input (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short Term Investments	$ 1,220	$ 1,318
Fixed maturities, Fair Value	38,457	38,780
Equity securities	1,964	1,964
Long Term Debt	3,300	3,300
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short Term Investments	1,220	1,318
Fixed maturities, Fair Value	38,457	38,780
Equity securities	1,964	1,964
Total fixed maturities, equity securities and other invested assets, Fair Value	41,641	42,062
Long Term Debt	4,046	4,013
Tax Exempt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	20,415	19,772
Tax Exempt [Member] | Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	20,415	19,772
Taxable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	18,042	19,008
Taxable [Member] | U.S. Government and Government Agency and Authority Obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	1,518	2,007
Taxable [Member] | Corporate Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	9,139	9,028
Taxable [Member] | Foreign Government and Government Agency Obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	6,177	6,672
Taxable [Member] | Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	18,042	19,008
Taxable [Member] | Fair Value [Member] | U.S. Government and Government Agency and Authority Obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	1,518	2,007
Taxable [Member] | Fair Value [Member] | Corporate Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	9,139	9,028
Taxable [Member] | Fair Value [Member] | Foreign Government and Government Agency Obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	6,177	6,672
Taxable [Member] | Fair Value [Member] | Residential Mortgage-backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	194	211
Taxable [Member] | Fair Value [Member] | Commercial Mortgage-backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	1,014	1,090
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short Term Investments	192	206
Equity securities	1,958	1,958
Total fixed maturities, equity securities and other invested assets, Fair Value	2,150	2,164
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short Term Investments	1,028	1,112
Fixed maturities, Fair Value	38,261	38,651
Total fixed maturities, equity securities and other invested assets, Fair Value	39,289	39,763
Long Term Debt	4,046	4,013
Level 2 [Member] | Tax Exempt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	20,413	19,769
Level 2 [Member] | Taxable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	17,848	18,882
Level 2 [Member] | Taxable [Member] | U.S. Government and Government Agency and Authority Obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	1,518	2,007
Level 2 [Member] | Taxable [Member] | Corporate Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	8,954	8,912
Level 2 [Member] | Taxable [Member] | Foreign Government and Government Agency Obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	6,169	6,663
Level 2 [Member] | Taxable [Member] | Residential Mortgage-backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	193	210
Level 2 [Member] | Taxable [Member] | Commercial Mortgage-backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	1,014	1,090
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	196	129
Equity securities	6	6
Total fixed maturities, equity securities and other invested assets, Fair Value	202	135
Level 3 [Member] | Tax Exempt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	2	3
Level 3 [Member] | Taxable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	194	126
Level 3 [Member] | Taxable [Member] | Corporate Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	185	116
Level 3 [Member] | Taxable [Member] | Foreign Government and Government Agency Obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	8	9
Level 3 [Member] | Taxable [Member] | Residential Mortgage-backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, Fair Value	$ 1	$ 1

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Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings Per Share

The following table sets forth the computation of basic and diluted earnings per share:

	Three Months Ended March 31
	2015		2014
	(in millions, except for per share amounts)
Basic earnings per share:
Net income	$	375	$	449
Weighted average shares outstanding		233.5		248.6
Basic earnings per share	$	1.61	$	1.81
Diluted earnings per share:
Net income	$	375	$	449
Weighted average shares outstanding		233.5		248.6
Additional shares from assumed issuance of shares under stock-based compensation awards		.7		.6
Weighted average shares and potential shares assumed outstanding for computing diluted earnings per share		234.2		249.2
Diluted earnings per share	$	1.60	$	1.80

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Invested Assets - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015 Investment	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Approximate number of individual fixed maturities in unrealized loss position	580
Approximate number of individual equity securities in unrealized loss position	15
Cumulative credit-related losses recognized in net income	$ 17	$ 18

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Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Fixed Maturities, cost	$ 36,483	$ 36,958
Equity Securities, cost	$ 1,074	$ 1,089
Common Stock, Par Value	$ 1	$ 1
Common Stock, Shares issued	371,980,460	371,980,460
Treasury Stock, Shares	142,227,768	139,551,071

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Accounting Pronouncements Not Yet Adopted

3 Months Ended

Mar. 31, 2015

Accounting Changes and Error Corrections [Abstract]

Accounting Pronouncements Not Yet Adopted

2) Accounting Pronouncements Not Yet Adopted

In February 2015, the Financial Accounting Standards Board issued updated guidance that amends certain aspects of the current consolidation accounting guidance. In particular, the new guidance modifies the evaluation of whether limited partnerships and similar legal entities are variable interest entities (VIEs) or voting interest entities and eliminates the presumption that a general partner should consolidate a limited partnership. The new guidance would be effective for the Corporation for the year beginning January 1, 2016. The Corporation is in the process of assessing the effect, if any, that the implementation of this guidance will have on its financial position and results of operations.

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Invested Assets - Change in Unrealized Appreciation or Depreciation of Investments Carried at Fair Value (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Change in unrealized appreciation of fixed maturities	$ 152	$ 362
Change in unrealized appreciation of equity securities	15	(1)
Change in unrealized appreciation of fixed maturities and equity securities	167	361
Deferred income tax	58	126
Total change in unrealized appreciation (depreciation) of fixed maturities and equity securities, Net of tax	$ 109	$ 235

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Fair Values of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2015

Fair Value Disclosures [Abstract]

Carrying Values and Fair Values of Financial Instruments

The carrying values and fair values of financial instruments were as follows:

	March 31, 2015				December 31, 2014
	Carrying Value		Fair Value		Carrying Value		Fair Value
	(in millions)
Assets
Invested assets
Short term investments	$	1,220	$	1,220	$	1,318	$	1,318
Fixed maturities		38,457		38,457		38,780		38,780
Equity securities		1,964		1,964		1,964		1,964
Liabilities
Long term debt		3,300		4,046		3,300		4,013

Fair Value of Financial Instruments Categorized Based Upon Lowest Level of Input

The fair value of financial instruments categorized based upon the lowest level of input that was significant to the fair value measurement was as follows:

	March 31, 2015
	Level 1		Level 2		Level 3		Total
	(in millions)
Assets
Short term investments	$	192	$	1,028	$	—	$	1,220
Fixed maturities
Tax exempt		—		20,413		2		20,415
Taxable
U.S. government and government agency and authority obligations		—		1,518		—		1,518
Corporate bonds		—		8,954		185		9,139
Foreign government and government agency obligations		—		6,169		8		6,177
Residential mortgage-backed securities		—		193		1		194
Commercial mortgage-backed securities		—		1,014		—		1,014
		—		17,848		194		18,042
Total fixed maturities		—		38,261		196		38,457
Equity securities		1,958		—		6		1,964
	$	2,150	$	39,289	$	202	$	41,641
Liabilities
Long term debt	$	—	$	4,046	$	—	$	4,046

	December 31, 2014
	Level 1		Level 2		Level 3		Total
	(in millions)
Assets
Short term investments	$	206	$	1,112	$	—	$	1,318
Fixed maturities
Tax exempt		—		19,769		3		19,772
Taxable
U.S. government and government agency and authority obligations		—		2,007		—		2,007
Corporate bonds		—		8,912		116		9,028
Foreign government and government agency obligations		—		6,663		9		6,672
Residential mortgage-backed securities		—		210		1		211
Commercial mortgage-backed securities		—		1,090		—		1,090
		—		18,882		126		19,008
Total fixed maturities		—		38,651		129		38,780
Equity securities		1,958		—		6		1,964
	$	2,164	$	39,763	$	135	$	42,062
Liabilities
Long term debt	$	—	$	4,013	$	—	$	4,013