Revenue Recognition - Cumulative Effect - Consolidated Statement of Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Revenue - cumulative effect
Total net sales	$ 1,691	$ 1,422	$ 3,270	$ 2,821
Total cost of sales	1,575	1,293	2,982	2,554
Net earnings	7	$ 59	39	$ 143
Balances Without Adoption of Topic 606
Revenue - cumulative effect
Total net sales	1,666		3,241
Total cost of sales	1,550		2,954
Net earnings	7		38
ASU 2014-09 | Adjustments
Revenue - cumulative effect
Total net sales	25		29
Total cost of sales	$ 25		28
Net earnings			$ 1