Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net income	$ 455	$ 90	$ 410
Other comprehensive income (loss):
Adjustment to pension liability	20	16	(10)
Income tax expense (benefit) of adjustment to pension liability	5	4	(2)
Other comprehensive income (loss)	15	12	(8)
Comprehensive income	$ 470	$ 102	$ 402