Derivatives 2 (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Jun. 30, 2012	Mar. 31, 2012
Derivatives, Fair Value [Line Items]
Fair value of interest rate derivative assets	$ 25	$ 27
Derivatives (Textual) [Abstract]
Total value of senior notes subject to fair value interest rate swaps	500
Purchase and sale of notional value of foreign currency contracts outstanding	857	893
Tenure of foreign currency contracts outstanding	less than nine months	less than six months
Net fair value of foreign currency contracts	(3)	(2)
Fair value of foreign currency contracts included in "Other current assets"	14	2
Fair value of foreign currency contracts included in "Accrued expenses and other current liabilities"	17	4
6.125% Notes due December 2014 [Member]
Debt Instrument [Line Items]
Long-term debt, interest rate	6.125%
Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Notional amount of fair value hedge instruments	500
Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Fair value of interest rate derivative assets	11	11
Other Noncurrent Assets, Net [Member]
Derivatives, Fair Value [Line Items]
Fair value of interest rate derivative assets	$ 14	$ 16

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Tenure of foreign currency contracts outstanding.

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- Definition

Total value of Senior Notes subject to fair value interest rate swaps.

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- Definition

Interest rate stated in the contractual 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

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-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

Fair value as of the balance sheet date of all foreign currency derivative assets not designated as hedging instruments.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 17

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Fair value as of the balance sheet date of all foreign currency derivatives not designated as hedging instruments.

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-Name Accounting Standards Codification

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- Definition

Aggregate notional amount of all derivatives designated as a fair value hedging instrument. The notional amount relates to a number of currency units, shares, bushels, pounds, or other units specified in a derivative instrument.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

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