Net Sales - Schedule of Balance of Deferred Revenue Related to Contracts with Customers (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Change in Contract with Customer, Liability [Roll Forward]
Balance at January 1	$ 54	$ 78
Revenue deferred during period	169	155
Revenue recognized during period	(173)	(179)
Balance at December 31	$ 50	$ 54