Long-Term Debt (Schedule of Debt) (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Debt	$ 16,914	$ 16,785
Current maturities of long-term debt	(249)	(229)
Long-term debt	16,665	16,556
Secured Debt [Member] \| Credit Facility, Term Loan A [Member]
Debt Instrument [Line Items]
Debt	820	844
Secured Debt [Member] \| Credit Facility, Term Loan F [Member]
Debt Instrument [Line Items]
Debt	1,668	1,671
Secured Debt [Member] \| Credit Facility, Term Loan G [Member]
Debt Instrument [Line Items]
Debt	1,565	1,568
Secured Debt [Member] \| Credit Facility, Term Loan H [Member]
Debt Instrument [Line Items]
Debt	2,879	2,884
Line of Credit [Member] \| Credit Facility, Revolving Credit Loans [Member]
Debt Instrument [Line Items]
Debt	323	147
Senior Notes [Member] \| Senior Notes at 8.0, Due 2019 [Member]
Debt Instrument [Line Items]
Debt	1,993	1,992
Senior Notes [Member] \| Senior Notes at 7.125, Due 2020 [Member]
Debt Instrument [Line Items]
Debt	1,187	1,186
Senior Notes [Member] \| Senior Notes at 6.875, Due 2022 [Member]
Debt Instrument [Line Items]
Debt	2,924	2,921
Senior Secured Notes [Member] \| Senior Secured Notes At 5.125 Due 2018 [Member]
Debt Instrument [Line Items]
Debt	1,588	1,587
Senior Secured Notes [Member] \| Senior Secured Notes at 5.125, Due 2021 [Member]
Debt Instrument [Line Items]
Debt	968	967
Receivables Facility [Member] \| Receivables Facility, Name [Member]
Debt Instrument [Line Items]
Debt	699	699
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Debt	219	227
Unsecured Debt [Member]
Debt Instrument [Line Items]
Debt	$ 81	$ 92

Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.13,16)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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- Definition

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+ References

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- Definition

Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

+ 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)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section H

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Amount of long-term debt and capital leases due within one year or the normal operating cycle, if longer.

+ References

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