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Consolidated Statements of Comprehensive Income (Loss) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Comprehensive Income (Loss) [Abstract]        
Net earnings $ 391 $ 338 $ 1,181 $ 935
Other comprehensive income (loss), net of tax:        
Cumulative translation adjustments 21 (26) 10 (7)
Amortization of net actuarial loss (gain) 8 7 23 22
Unrealized gain (loss) on securities 1 (2) 2 (2)
Total other comprehensive income (loss), net of tax 30 (21) 35 13
Comprehensive income (loss) $ 421 $ 317 $ 1,216 $ 948