Income Taxes - Income (Loss) Before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax [Line Items]
Foreign	$ 960	$ 921	$ 906
Income before income taxes	1,453	1,365	1,363
Canadian
Income Tax [Line Items]
Foreign	$ 493	$ 444	$ 457