Commitments And Contingencies (Schedule Of Changes In Carrying Amount Of Warranty Liabilities) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Commitments And Contingencies [Abstract]
Beginning balance	$ 260		$ 239		$ 221
Warranty expense	88		70		71
Payments	(56)		(51)		(60)
Adjustments	1	[1]	2	[1]	7	[1]
Ending balance	$ 293		$ 260		$ 239

[1] Includes warranty liabilities assumed in connection with acquisitions and foreign exchange translation adjustments.