Revenue Recognition - Cumulative Effect - Consolidated Statement of Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Revenue - cumulative effect
Total net sales	$ 1,579	$ 1,399
Total cost of sales and operating expenses	1,407	$ 1,261
ASU 2014-09 | Adjustments
Revenue - cumulative effect
Total net sales	4
Total cost of sales and operating expenses	3
ASU 2014-09 | Balances without adoption of Topic 606
Revenue - cumulative effect
Total net sales	1,575
Total cost of sales and operating expenses	$ 1,404