Face (par) amount of debt instrument at time of issuance.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

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Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

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- Definition

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

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Period Type:	instant

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
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Period Type:	instant

- Details

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Long-Term Debt - Additional Information (Detail) - USD ($)	1 Months Ended				3 Months Ended	9 Months Ended
	Aug. 31, 2016	Mar. 31, 2016	Jun. 30, 2015	May 31, 2015	Sep. 30, 2016	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015	Nov. 30, 2015	Jan. 31, 2015
Debt Instrument [Line Items]
Pretax loss on retirement of debt					$ 4,000,000	$ 4,000,000	$ 125,000,000
Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument maturity date	Feb. 29, 2024	Mar. 31, 2023
Senior Notes [Member] \| Senior Secured Notes Due 2026 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount		$ 1,500,000,000						$ 500,000,000	$ 1,000,000,000
Debt instrument, stated interest		5.25%						5.875%
Senior Notes [Member] \| Senior Secured Notes Due 2016 [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest									6.50%
Debt instrument, principal amount									$ 1,000,000,000
Senior Notes [Member] \| Senior Secured Term Loan Facility Maturing in June 2020 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount			$ 1,400,000,000
Debt instrument maturity date			Jun. 30, 2020
Pretax loss on retirement of debt			$ 3,000,000
Senior Notes [Member] \| Senior Secured Notes Due 2025 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount				$ 1,600,000,000						$ 1,000,000,000
Debt instrument, stated interest				5.375%						5.375%
Senior Notes [Member] \| Senior Secured Notes Due 2021 [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest				7.75%
Pretax loss on retirement of debt				$ 122,000,000
Debt instrument, principal amount				$ 1,525,000,000
Senior Notes [Member] \| Senior Secured Notes Due 2015 [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest										6.375%
Debt instrument, principal amount										$ 750,000,000
Senior Notes [Member] \| Senior Secured Notes Due 2023 [Member]
Debt Instrument [Line Items]
Proceeds from new term loan		$ 1,500,000,000
Senior Notes [Member] \| Senior Secured Notes Due 2027 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount	$ 1,200,000,000
Debt instrument, stated interest	4.50%
Senior Notes [Member] \| Senior Secured Notes Due 2024 [Member]
Debt Instrument [Line Items]
Proceeds from new term loan	$ 1,200,000,000
Pretax loss on retirement of debt	$ 4,000,000