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
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-SubTopic 30
-Section 55
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- Definition

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

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-Name Accounting Standards Codification
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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.

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No definition available.

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- Definition

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

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- Definition

For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain.

+ References

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-Subparagraph (SX 210.5-02.17)
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- Definition

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

+ References

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Publisher SEC
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-Number 210
-Section 02
-Paragraph 20, 22
-Article 5

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- Definition

Aggregate consideration of debt instrument repurchase amount.

+ References

No definition available.

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- Definition

Long term debt, net of unamortized debt issuance costs

+ References

No definition available.

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Debt - Repurchase of 8.375% Senior Notes and Issuance of 5.5% Senior Notes (Details) - USD ($)		12 Months Ended
	Mar. 26, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Mar. 31, 2015	Feb. 24, 2015
Debt Instrument [Line Items]
Loss on early extinguishment of debt	$ 19,000,000	$ 19,000,000	$ 0	$ 0
Debt issuance cost		13,000,000	14,000,000
Amount of debt outstanding		2,188,000,000	2,209,000,000
Long Term Debt, Net Of Unamortized Debt Issuance Costs		$ 2,175,000,000	$ 2,195,000,000
8.375% senior notes due 2018
Debt Instrument [Line Items]
Stated interest rate		8.375%	8.375%
Repurchase amount	224,000,000				$ 350,000,000	$ 126,000,000
Aggregate consideration	$ 242,000,000					135,000,000
Amount of debt outstanding		$ 0	$ 350,000,000
5.5% senior notes due 2025
Debt Instrument [Line Items]
Stated interest rate		5.50%	5.50%
Face amount of notes						350,000,000
Debt issuance cost						$ 6,000,000
Amount of debt outstanding		$ 350,000,000	$ 0
Long Term Debt, Net Of Unamortized Debt Issuance Costs		$ 344,000,000