Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss by Component (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	$ 1,484,000,000	$ 1,056,000,000	$ 1,233,000,000	$ 874,000,000
Ending Balance	1,621,000,000	1,184,000,000	1,621,000,000	1,184,000,000
Pension and OPEB liability adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(1,000,000)	0	(2,000,000)	5,000,000
Other comprehensive (loss) income before reclassifications	0	0	3,000,000	0
Amounts reclassified from AOCL	(3,000,000)	(3,000,000)	(5,000,000)	(9,000,000)
Income tax benefit (expense)	0	1,000,000	0	2,000,000
Net current period other comprehensive (loss) income	(3,000,000)	(2,000,000)	(2,000,000)	(7,000,000)
Ending Balance	(4,000,000)	(2,000,000)	(4,000,000)	(2,000,000)
Interest rate swaps
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	11,000,000	17,000,000	11,000,000	15,000,000
Other comprehensive (loss) income before reclassifications	(4,000,000)	4,000,000	3,000,000	11,000,000
Amounts reclassified from AOCL	(3,000,000)	(3,000,000)	(10,000,000)	(8,000,000)
Income tax benefit (expense)	1,000,000	(1,000,000)	1,000,000	(1,000,000)
Net current period other comprehensive (loss) income	(6,000,000)	0	(6,000,000)	2,000,000
Ending Balance	5,000,000	17,000,000	5,000,000	17,000,000
Foreign currency items
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(47,000,000)	(42,000,000)	(40,000,000)	(42,000,000)
Other comprehensive (loss) income before reclassifications	8,000,000	(5,000,000)	1,000,000	(5,000,000)
Amounts reclassified from AOCL	0	0	0	0
Income tax benefit (expense)	0	0	0	0
Net current period other comprehensive (loss) income	8,000,000	(5,000,000)	1,000,000	(5,000,000)
Ending Balance	(39,000,000)	(47,000,000)	(39,000,000)	(47,000,000)
Accumulated Other Comprehensive (Loss) Income, net of tax
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(37,000,000)	(25,000,000)	(31,000,000)	(22,000,000)
Other comprehensive (loss) income before reclassifications	4,000,000	(1,000,000)	7,000,000	6,000,000
Amounts reclassified from AOCL	(6,000,000)	(6,000,000)	(15,000,000)	(17,000,000)
Income tax benefit (expense)	1,000,000	0	1,000,000	1,000,000
Net current period other comprehensive (loss) income	(1,000,000)	(7,000,000)	(7,000,000)	(10,000,000)
Ending Balance	$ (38,000,000)	$ (32,000,000)	$ (38,000,000)	$ (32,000,000)