The Separation and Basis of Presentation - Cost Allocations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Restructuring Cost and Reserve [Line Items]
Cost of goods sold	$ 1,676	$ 1,218	$ 4,674	$ 3,614
Selling, general administrative, and other expenses	63	59	183	194
Research and development expenses	8	8	25	27
Provision for depreciation and amortization	61	63	186	191
Restructuring and other charges (E)	14	3	612	61
Interest expense	26	22	74	97
Other expenses, net	$ 15	$ 27	$ 52	69
Separation transaction, costs incurred				18
Spin-off
Restructuring Cost and Reserve [Line Items]
Cost of goods sold				0
Selling, general administrative, and other expenses				25
Research and development expenses				0
Provision for depreciation and amortization				1
Restructuring and other charges (E)				2
Interest expense				28
Other expenses, net				$ (5)