Condensed Consolidated Statements of Comprehensive Earnings (Parenthetical) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Statement of Other Comprehensive Income [Abstract]
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax	$ (55)	$ (20)	$ (33)	$ 93
Other Comprehensive Income Net Losses and Prior Service Costs, Tax Effect	0	(2)	0	(2)
Other Comprehensive Income Amortization Of Net Losses Prior Service Costs And Net Transition Costs, Tax Effect	(9)	(5)	(21)	(12)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax Effect	0	(1)	1	(2)
Derivative Instruments Gain Loss Recognized In Other Comprehensive IncomeTax Effect	$ 4	$ 2	$ (1)	$ 0