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Consolidated Statements of Earnings (Unaudited) (Parenthetical) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Oct. 01, 2017
Oct. 02, 2016
Oct. 01, 2017
Oct. 02, 2016
Income Statement [Abstract]        
Discontinued operations, tax benefit of $46 in 2016 $ 0 $ (46) $ 0 $ (46)