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		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Pension Benefits - U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 3	$ 3	$ 9	$ 9
Interest cost	18	18	52	54
Expected return on plan assets	(24)	(20)	(70)	(60)
Recognized prior service cost (credit)	0	1	0	2
Recognized net loss	14	12	42	36
Net periodic cost	11	14	33	41
Pension Benefits - Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	7	7	21	19
Interest cost	37	42	113	121
Expected return on plan assets	(45)	(50)	(137)	(147)
Recognized prior service cost (credit)	(1)	0	0	1
Recognized net loss	15	12	43	39
Net periodic cost	13	11	40	33
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	2	1	4	6
Interest cost	4	5	12	16
Recognized prior service cost (credit)	(11)	(8)	(33)	(25)
Recognized net loss	3	3	11	10
Net periodic cost	$ (2)	$ 1	$ (6)	$ 7