Employee Benefit Plans (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Net benefit cost	$ 53	$ 50	$ 104	$ 106
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Net service cost	4	3	8	7
Interest cost	69	69	136	139
Expected return on plan assets	(67)	(68)	(133)	(138)
Settlement charge	1	0	1	6
Prior service cost	1	0	2	0
Actuarial loss	45	46	90	92
Net benefit cost	53	50	104	106
United States Pension Plans of US Entity, Defined Benefit [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Net service cost	0	0	0	0
Interest cost	46	47	91	94
Expected return on plan assets	(39)	(42)	(78)	(83)
Settlement charge	0	0	0	0
Prior service cost	0	0	0	0
Actuarial loss	29	30	58	60
Net benefit cost	36	35	71	71
Defined Benefit Plan, Contributions by Employer	2		4
Defined Benefit Plan, Estimated Future Employer Contributions in Current Fiscal Year	6		6
Defined Benefit Plan Estimated Total Employer Contributions in Current Fiscal Year	10		10
Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Net service cost	4	3	8	7
Interest cost	23	22	45	45
Expected return on plan assets	(28)	(26)	(55)	(55)
Settlement charge	1	0	1	6
Prior service cost	1	0	2	0
Actuarial loss	16	16	32	32
Net benefit cost	17	15	33	35
Defined Benefit Plan, Contributions by Employer	22		40
Defined Benefit Plan, Estimated Future Employer Contributions in Current Fiscal Year	75		75
Defined Benefit Plan Estimated Total Employer Contributions in Current Fiscal Year	115		115
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Interest cost	1	2	1	3
Prior service cost	(5)	(4)	(9)	(7)
Actuarial loss	1	1	2	2
Net benefit cost	(3)	(1)	(6)	(2)
Defined Benefit Plan, Contributions by Employer	3		6
Defined Benefit Plan, Estimated Future Employer Contributions in Current Fiscal Year	4		4
Defined Benefit Plan Estimated Total Employer Contributions in Current Fiscal Year	10		10
Postemployment Benefit Plans Defined Benefit [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Net service cost	7	7	13	13
Interest cost	2	3	5	6
Prior service cost	(7)	0	(7)	0
Actuarial loss	4	3	7	6
Total postemployment cost	6	13	18	25
Benefit For Reduction In Actuarial Liability	6
Defined Benefit Plan, Contributions by Employer	8		12
Defined Benefit Plan, Estimated Future Employer Contributions in Current Fiscal Year	38		38
Defined Benefit Plan Estimated Total Employer Contributions in Current Fiscal Year	$ 50		$ 50