v2.4.0.6

Debt Obligations (Changes in Debt Obligations) (Details) (USD $)
In Millions, unless otherwise specified

3 Months Ended

Mar. 31, 2013

Dec. 31, 2012

Debt Conversion [Line Items]

Total debt obligations

$ 1,966

$ 1,976

Less current portion

(137)

(136)

Total long-term debt obligations

1,829

1,840

Payments, Conversions, Accretion and Other

(10)

2.50% convertible senior notes due August 15, 2013 [Member]

Debt Conversion [Line Items]

Total debt obligations

92

^[1]

91

^[1]

Payments, Conversions, Accretion and Other

1

^[1]

4.00% senior unsecured notes due January 15, 2015 [Member]

Debt Conversion [Line Items]

Total debt obligations

399

^[2]

399

^[2]

5.55% senior unsecured notes due January 15, 2020 [Member]

Debt Conversion [Line Items]

Total debt obligations

598

^[2]

598

^[2]

5.25% senior unsecured notes due January 16, 2018 [Member]

Debt Conversion [Line Items]

Total debt obligations

368

^[2]

368

^[2]

$450 million senior unsecured term loan facility credit agreement due September 19, 2016 [Member]

Debt Conversion [Line Items]

Total debt obligations

383

^[3]

394

^[3]

Payments, Conversions, Accretion and Other

(11)

^[3]

$750 million revolving credit commitment due September 19, 2016 [Member]

Debt Conversion [Line Items]

Total debt obligations

126

^[3]

126

^[3]

Debt Current [Member]

Debt Conversion [Line Items]

Less current portion

(137)

(136)

Payments, Conversions, Accretion and Other

(1)

Debt Non Current [Member]

Debt Conversion [Line Items]

Total long-term debt obligations

1,829

1,840

Payments, Conversions, Accretion and Other

$ (11)

[1]	See “2.50% Convertible Senior Notes” below for further discussion.
[2]	See “Senior Unsecured Notes” below for further discussion.
[3]	See “2011 Credit Facility” below for further discussion.

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- Definition

Decrease for amounts repaid on the debt instrument for the period.

+ References

Reference 1: 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.(f))

-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph f

-Article 4

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878



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-Publisher SEC

-Name Regulation S-X (SX)

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-Section 03

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-Article 9



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-Paragraph 1

-Subparagraph (SX 210.5-02.22)

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



Reference 6: http://www.xbrl.org/2003/role/presentationRef

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+ 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 210.5-02.19,20)

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



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+ 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



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