Debt And Lines Of Credit (Debt Extinguishment) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Debt Instruments [Abstract]
Debt reductions	$ 1,272	[1]	$ 129	[1]	$ 393	[1]
Pre-tax early debt extinguishment costs	$ 48	[1]	$ 32	[1]	$ 39	[1]
Interest rates range, minimum	1.625%
Interest rates range, maximum	9.375%
Original maturity date range, minimum	2010		2010		2010
Original maturity date range, maximum	2041		2039		2039

[1] Amounts are included in Restructuring and other charges in the accompanying consolidated statements of operations.