Pension and Other Postretirement Benefits (Components Of Net Periodic Pension And Other Postretirement Benefits Costs) (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
Pension Benefits - U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 3	$ 3	$ 6	$ 6
Interest cost	17	18	34	36
Expected return on plan assets	(23)	(20)	(46)	(40)
Recognized prior service cost (credit)	0	0	0	1
Recognized net loss	14	13	28	24
Net periodic cost	11	14	22	27
Pension Benefits - Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	7	6	14	12
Interest cost	38	40	76	79
Expected return on plan assets	(46)	(49)	(92)	(97)
Recognized prior service cost (credit)	1	0	1	1
Recognized net loss	14	14	28	27
Net periodic cost	14	11	27	22
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	3	2	5
Interest cost	4	5	8	11
Recognized prior service cost (credit)	(11)	(9)	(22)	(17)
Recognized net loss	4	4	8	7
Net periodic cost	$ (2)	$ 3	$ (4)	$ 6