Derivatives and Hedging Activities (Details 2) (USD $) In Millions	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Cash flow hedges [Member] \| Other Expense [Member] \| Interest rate contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net hedge ineffectiveness	$ 0	$ 0	$ 0	$ 0
Cash flow hedges [Member] \| Interest rate contracts [Member] \| Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount reclassified from AOCI into income	(5)	(8)	(13)	(21)
Net investment hedges [Member] \| Other Expense [Member] \| Foreign exchange contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount reclassified from AOCI into income	0	0	0	0
Net hedge ineffectiveness	$ 0	$ 0	$ (3)	$ 0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The income statement location of the effective portion of net gain or loss reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying 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 205G

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44C
-Subparagraph b
-Clause 3

+ Details

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- Definition

The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness.

+ References

+ Details

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