Pension Savings And Other Postretirement Benefit Plans (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Pension Savings and Other Postretirement Benefit Plans (Textuals) [Abstract]
Expected Current Year Contributions To Funded Pension Plans, Minimum	$ 550
Expected Current Year Contributions To Funded Pension Plans, Maximum	600
Contributions to defined savings plans	27	26
Postretirement benefit cost (credit)	3	3
U.S. [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost- benefits earned during the period	10	11
Interest cost on projected benefit obligation	66	71
Expected return on plan assets	(75)	(77)
Amortization of prior service cost	6	6
Amortization of net losses	46	34
Net periodic pension cost	53	45
Curtailments/settlements/termination benefits	0	0
Total net periodic pension cost	53	45
Pension Savings and Other Postretirement Benefit Plans (Textuals) [Abstract]
Contributions to pension plans	51
Non U.S. [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost- benefits earned during the period	8	8
Interest cost on projected benefit obligation	35	38
Expected return on plan assets	(30)	(33)
Amortization of prior service cost	0	0
Amortization of net losses	12	10
Net periodic pension cost	25	23
Curtailments/settlements/termination benefits	0	(1)
Total net periodic pension cost	25	22
Pension Savings and Other Postretirement Benefit Plans (Textuals) [Abstract]
Contributions to pension plans	$ 54