Consolidating Financial Information (Details Textuals) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015
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

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- Definition

Percentage of ownership over guarantor subsidiaries.

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: 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(a)(1))

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: 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(a)(2))

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- Definition

Describes certain required disclosures for those guarantees that are issued to benefit entities meeting the definition of a related party.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12265-110248

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Related Parties

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- Definition

The description of the nature of any restrictions on the ability of consolidated and unconsolidated subsidiaries to transfer funds to the parent in the form of cash dividends, loans and advances.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph e

-Subparagraph 3

-Article 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(e)(3)(i))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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