Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Statement Of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 1	$ 0
Property, plant and equipment, accumulated depreciation	$ 657	$ 642
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	2,000,000,000	2,000,000,000
Common stock, shares issued	209,700,000	209,700,000
Common stock, shares outstanding	209,700,000	209,700,000