v3.2.0.727

Debt (Debt Textuals) (Details) - USD ($) $ in Millions		3 Months Ended			6 Months Ended
		Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage		5.50%		6.10%	5.50%	6.10%
Long-term Debt		$ 11,398			$ 11,398		$ 11,122
Gains (Losses) on Extinguishment of Debt		(13)		$ 0	(32)	$ (1)
Senior Unsecured Notes 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount			$ 650
Debt Instrument, Interest Rate, Stated Percentage			5.50%
Long-term Debt		650			650		0
Deferred Finance Costs, Net			$ 9
First Lien Notes 2023 [Member]
Debt Instrument [Line Items]
Long-term Debt	[1]	693			693		840
Gains (Losses) on Extinguishment of Debt			(19)
2022 First Lien Term Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 1,600			1,600
Percentage of the principal amount of the 2022 First Lien Term Loan to be paid quarterly		0.25%
Debt Issuance Cost		$ 13
Long-term Debt		1,591			1,591		$ 0
Deferred Finance Costs, Net		$ 6			$ 6
Early Redemption Amount [Member] | First Lien Notes 2023 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 147
Federal Funds Effective Rate [Member] | 2022 First Lien Term Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		0.50%
Eurodollar Rate For A One Month Interest Period [Member] | 2022 First Lien Term Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.00%
Prime Rate Or The Eurodollar Rate For a One Month Interest Period [Member] | 2022 First Lien Term Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.75%
London Interbank Offered Rate (LIBOR) [Member] | 2022 First Lien Term Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		2.75%
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum		0.75%
[1] On February 3, 2015, we repurchased approximately $147 million of our 2023 First Lien Notes with the proceeds from our 2024 Senior Unsecured Notes, as described in further detail above.

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