Leases - Lease Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases
Amortization of right-of-use assets (included in Cost of goods sold and Selling and administrative expense)	$ 7	$ 6
Interest on lease liabilities (included in Interest expense, net)	2	2
Operating lease cost (included in Cost of goods sold and Selling and administrative expense)	75	83
Total lease cost	$ 84	$ 91