Consolidating Financial Information (Details Textuals) $ in Millions	9 Months Ended
	Sep. 30, 2015 USD ($)
Consolidating Financial Information (Textuals) [Abstract]
Percentage Of Ownership Over Guarantor Subsidiaries	100.00%
Guarantor Obligations, Related Party Disclosure	The notes are fully and unconditionally guaranteed on a joint and several basis by each guarantor subsidiary.
Consolidating Financial Information Restrictions on Remittance of Funds	Certain non-guarantor subsidiaries of the Parent Company are limited in their ability to remit funds to it by means of dividends, advances or loans due to required foreign government and/or currency exchange board approvals or limitations in credit agreements or other debt instruments of those subsidiaries.
8.25% Senior Notes due 2020
Additional Consolidating Financial Information (Textuals) [Abstract]
Issuance of aggregate principal amount of senior notes	$ 1,000
Interest on Notes	8.25%
Debt Instrument, Maturity Date	Aug. 15, 2020
8.75% Notes due 2020
Additional Consolidating Financial Information (Textuals) [Abstract]
Issuance of aggregate principal amount of senior notes	$ 282
Interest on Notes	8.75%
Debt Instrument, Maturity Date	Aug. 15, 2020
6.5% Notes due 2021
Additional Consolidating Financial Information (Textuals) [Abstract]
Issuance of aggregate principal amount of senior notes	$ 900
Interest on Notes	6.50%
Debt Instrument, Maturity Date	Mar. 01, 2021
7% Notes Due In 2022
Additional Consolidating Financial Information (Textuals) [Abstract]
Issuance of aggregate principal amount of senior notes	$ 700
Interest on Notes	7.00%
Debt Instrument, Maturity Date	May 15, 2022