Exit Costs And Other Charges (Summary Of Exit Cost) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012
Restructuring Cost and Reserve [Line Items]
Balance at December 31, 2011	$ 107
Charges Incurred	23
Cash Payments	(23)
Non-cash Settlements and Accretion	2
Currency and Other Adjustments
Balance at March 31, 2012	109
Termination Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Balance at December 31, 2011	12
Charges Incurred	10
Cash Payments	(9)
Currency and Other Adjustments
Balance at March 31, 2012	13
Lease, Contract Obligations And, Other Costs [Member]
Restructuring Cost and Reserve [Line Items]
Balance at December 31, 2011	95
Charges Incurred	13
Cash Payments	(14)
Non-cash Settlements and Accretion	2
Currency and Other Adjustments
Balance at March 31, 2012	$ 96