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
	Mar. 31, 2013	Mar. 31, 2012
Pension Benefits - U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 4	$ 3
Interest cost	15	17
Expected return on plan assets	(25)	(23)
Recognized net loss	14	14
Net periodic cost	8	11
Pension Benefits - Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	7	7
Interest cost	36	38
Expected return on plan assets	(46)	(46)
Recognized prior service cost (credit)	(4)	0
Recognized net loss	18	14
Net periodic cost	11	13
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	1
Interest cost	3	4
Recognized prior service cost (credit)	(10)	(11)
Recognized net loss	4	4
Net periodic cost	$ (2)	$ (2)