Pension Savings And Other Postretirement Benefit Plans (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Curtailments/settlements/termination benefits	$ 0	$ 11	$ 0	$ 11
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	23	25	50	51
Postretirement benefit cost (credit)	0	2	3	5
Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost- benefits earned during the period	7	8	15	16
Interest cost on projected benefit obligation	35	38	70	76
Expected return on plan assets	(29)	(33)	(59)	(66)
Amortization of prior service cost	1	1	1	1
Amortization of net losses	11	9	23	19
Net periodic pension cost	25	23	50	46
Curtailments/settlements/termination benefits	0	1	0	0
Total net periodic pension cost	25	24	50	46
Pension Savings and Other Postretirement Benefit Plans (Textuals) [Abstract]
Contributions to pension plans	27		81
U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments		11
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost- benefits earned during the period	10	10	20	21
Interest cost on projected benefit obligation	65	70	131	141
Expected return on plan assets	(75)	(76)	(150)	(153)
Amortization of prior service cost	6	6	12	12
Amortization of net losses	43	33	89	67
Net periodic pension cost	49	43	102	88
Curtailments/settlements/termination benefits	0	11	0	11
Total net periodic pension cost	49	54	102	99
Pension Savings and Other Postretirement Benefit Plans (Textuals) [Abstract]
Contributions to pension plans	$ 78		$ 129