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Consolidated Statements of Comprehensive Income - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 24, 2017
Sep. 30, 2018
Sep. 24, 2017
Statement of Comprehensive Income [Abstract]        
Net earnings $ 1,473 $ 963 $ 3,793 $ 2,707
Postretirement benefit plans        
Amounts reclassified from accumulated other comprehensive loss 300 200 900 602
Other comprehensive gain recognized during the period 0 0 0 3
Other, net 18 77 (30) 137
Other comprehensive income, net of tax 318 277 870 742
Comprehensive income $ 1,791 $ 1,240 $ 4,663 $ 3,449