Restructuring Programs (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011		Jun. 30, 2010
Restructuring reserve [Roll Forward]
Balance at beginning of period			$ 323
Restructuring provision			24
Reversals of prior accruals			(48)
Net current period charges	(9)	11	(24)		206
Charges against reserve and currency	(67)	(60)	(120)		(83)
Balance at end of period	179		179
Reconciliation to the Condensed Consolidated Statements of Cash Flows [Abstract]
Charges against reserve	(67)	(60)	(120)		(83)
Asset impairment	0	0	0		4
Effects of foreign currency and other non-cash items	4	5	0		(15)
Cash Payments for Restructurings	(63)	(55)	(120)		(94)
Restructuring Cost and Reserve [Line Items]
Total Net Restructuring Charges	(9)	11	(24)		206
Severance and Related Costs [Member]
Restructuring reserve [Roll Forward]
Balance at beginning of period			298
Restructuring provision			23
Reversals of prior accruals			(43)
Net current period charges			(20)	[1]
Charges against reserve and currency			(113)
Balance at end of period	165		165
Reconciliation to the Condensed Consolidated Statements of Cash Flows [Abstract]
Charges against reserve			(113)
Restructuring Cost and Reserve [Line Items]
Total Net Restructuring Charges			(20)	[1]
Lease Cancellation and Other Costs [Member]
Restructuring reserve [Roll Forward]
Balance at beginning of period			25
Restructuring provision			1
Reversals of prior accruals			(5)
Net current period charges			(4)	[1]
Charges against reserve and currency			(7)
Balance at end of period	14		14
Reconciliation to the Condensed Consolidated Statements of Cash Flows [Abstract]
Charges against reserve			(7)
Restructuring Cost and Reserve [Line Items]
Total Net Restructuring Charges			(4)	[1]
Segment Reporting Information Technology [Member]
Restructuring reserve [Roll Forward]
Net current period charges	(7)	7	(19)		136
Restructuring Cost and Reserve [Line Items]
Total Net Restructuring Charges	(7)	7	(19)		136
Segment Reporting Information Services [Member]
Restructuring reserve [Roll Forward]
Net current period charges	1	2	0		45
Restructuring Cost and Reserve [Line Items]
Total Net Restructuring Charges	1	2	0		45
Segment Reporting Information Other [Member]
Restructuring reserve [Roll Forward]
Net current period charges	(3)	2	(5)		25
Restructuring Cost and Reserve [Line Items]
Total Net Restructuring Charges	$ (3)	$ 2	$ (5)		$ 25

[1] (1) Represents net amount recognized within the Condensed Consolidated Statements of Income for the period shown.