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Outstanding Foreign Currency Forward Contracts (Detail) In Millions, unless otherwise specified	Sep. 30, 2012 USD ($)	Sep. 30, 2012 BRL	Sep. 30, 2012 CAD	Sep. 30, 2012 DKK	Sep. 30, 2012 EUR (€)	Sep. 30, 2012 GBP (£)	Sep. 30, 2012 MXN	Sep. 30, 2012 NOK	Sep. 30, 2012 RUB	Sep. 30, 2012 SGD	Dec. 31, 2011 USD ($)	Dec. 31, 2011 DKK	Dec. 31, 2011 EUR (€)	Dec. 31, 2011 GBP (£)	Dec. 31, 2011 NOK	Dec. 31, 2011 RUB	Dec. 31, 2011 SEK	Dec. 31, 2011 SGD
Derivative [Line Items]
Foreign currency, Cash flow hedging	$ 393			112	€ 383	£ 11	102	7,035		16	$ 402	98	€ 456	£ 2	6,639			10
Foreign currency, Non-designated hedging	$ 936	99	2	217	€ 253	£ 12		1,717	1,266	43	$ 483	67	€ 161	£ 9	2,310	786	4	5

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Fair value as of the balance sheet date of all foreign currency derivatives designated as cash flow hedging instruments.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 107

-Paragraph 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (a),(b),(c)(1)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959

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Net fair value of all derivative instruments not designated as a hedging instrument.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13433-108611



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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 107

-Paragraph 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13495-108611

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