Debt (Debt Textuals) (Details) (USD $)																3 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Jun. 30, 2014 First Lien Notes 2020 [Member]		Dec. 31, 2013 First Lien Notes 2020 [Member]		Jun. 30, 2014 First Lien Notes 2019 [Member]		Dec. 31, 2013 First Lien Notes 2019 [Member]		Jun. 30, 2014 First Lien Notes 2021 [Member]		Dec. 31, 2013 First Lien Notes 2021 [Member]		Sep. 30, 2014 Subsequent Event [Member] Corporate Revolving Facility [Member]	Jul. 30, 2014 Subsequent Event [Member] Corporate Revolving Facility [Member]	Jul. 22, 2014 Subsequent Event [Member] Early Tender Amount [Member] First Lien Notes 2020 [Member]	Jul. 22, 2014 Subsequent Event [Member] Early Tender Amount [Member] First Lien Notes 2021 [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 11,449,000,000	$ 11,112,000,000		$ 875,000,000	[1]	$ 875,000,000	[1]	$ 320,000,000	[2]	$ 320,000,000	[2]	$ 1,600,000,000	[1]	$ 1,600,000,000	[1]			$ 861,000,000	$ 1,582,000,000
Line of Credit Facility, Increase (Decrease), Net																500,000,000
Debt Instrument, Interest Rate, Effective Percentage	6.10%		6.90%
Line of Credit Facility, Maximum Borrowing Capacity																	$ 1,500,000,000

[1] On July 8, 2014, we launched tender offers and consent solicitations to repurchase our 2020 First Lien Notes and 2021 First Lien Notes with the proceeds from our Senior Unsecured Notes which are described in further detail below. On July 22, 2014, we repurchased approximately $861 million in aggregate principal amount of our 2020 First Lien Notes and approximately $1,582 million in aggregate principal amount of our 2021 First Lien Notes. We used the remaining net proceeds, together with cash on hand, to satisfy and discharge the remaining 2020 First Lien Notes and 2021 First Lien Notes.

[2] The 2019 First Lien Notes were repaid on July 22, 2014 with a portion of the proceeds from the issuance of our Senior Unsecured Notes which are described in further detail below.