Employee Benefit Plans (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Change in plan assets:
Exchange rate adjustments		$ 5
U.S. Pension Benefits [Member]
Change in benefit obligation:
Benefit obligation at beginning of year	444	375
Service cost	38	32	29
Interest cost	21	22	20
Actuarial loss	43	31
Benefits paid	(19)	(47)
Acquisitions of businesses		34
Other	(3)	(3)
Benefit obligation at end of year	524	444	375
Change in plan assets:
Fair value of plan assets at beginning of year	416	346
Actual return on plan assets	(5)	48
Employer contributions	43	72
Benefits paid	(19)	(47)
Other	(2)	(3)
Fair value of plan assets at end of year	433	416	346
Funded status - underfunded at end of year	(91)	(28)
Accumulated benefit obligation	491	421
Non-U.S. Pension Benefits [Member]
Change in benefit obligation:
Benefit obligation at beginning of year	593	327
Service cost	9	8	3
Interest cost	33	26	15
Actuarial loss	25	4
Benefits paid	(16)	(12)
Curtailment	(4)	(1)
Acquisitions of businesses	2	253
Other	1	2
Exchange rate adjustments		(14)
Benefit obligation at end of year	643	593	327
Change in plan assets:
Fair value of plan assets at beginning of year	474	248
Actual return on plan assets	38	36
Employer contributions	28	52
Benefits paid	(16)	(12)
Acquisitions of businesses		160
Other	1	1
Exchange rate adjustments	1	(11)
Fair value of plan assets at end of year	526	474	248
Funded status - underfunded at end of year	(117)	(119)
Accumulated benefit obligation	616	553
Other Postretirement Benefits [Member]
Change in benefit obligation:
Benefit obligation at beginning of year	166	157
Service cost	8	10	8
Interest cost	8	9	10
Actuarial loss	28	10
Benefits paid	(14)	(15)
Acquisitions of businesses		27
Plan amendments		(32)
Benefit obligation at end of year	196	166	157
Change in plan assets:
Employer contributions	14	15
Benefits paid	(14)	(15)
Funded status - underfunded at end of year	(196)	(166)
Accumulated benefit obligation	$ 196	$ 166