Accumulated Other Comprehensive Loss - Changes in Components of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	$ 634	$ 756	$ 781
Net current period other comprehensive (loss) income	51	16	(37)
Balance	874	634	756
Pension and OPEB liability adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(17)	(19)	8
Other comprehensive (loss) income before reclassifications	39	12	(22)
Amounts reclassified from AOCL	(10)	(9)	(14)
Income tax benefit (expense)	(7)	(1)	9
Net current period other comprehensive (loss) income	22	2	(27)
Balance	5	(17)	(19)
Interest rate swaps
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(24)	(46)	(26)
Other comprehensive (loss) income before reclassifications	44	14	(37)
Amounts reclassified from AOCL	6	15	11
Income tax benefit (expense)	(11)	(7)	6
Net current period other comprehensive (loss) income	39	22	(20)
Balance	15	(24)	(46)
Foreign currency items
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(32)	(24)	(34)
Other comprehensive (loss) income before reclassifications	(10)	(8)	10
Net current period other comprehensive (loss) income	(10)	(8)	10
Balance	(42)	(32)	(24)
Accumulated Other Comprehensive Loss, net of tax
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(73)	(89)	(52)
Other comprehensive (loss) income before reclassifications	73	18	(49)
Amounts reclassified from AOCL	(4)	6	(3)
Income tax benefit (expense)	(18)	(8)	15
Net current period other comprehensive (loss) income	51	16	(37)
Balance	$ (22)	$ (73)	$ (89)