Commiments and Contingencies Commiments and Contingencies (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Loss Contingencies [Line Items]
Loss Contingency Accrual	$ 25	$ 25
Accrual for Environmental Loss Contingencies, Gross	26	26
Current portion (included in Accounts payable and accrued liabilities)	(1)	(1)
Long-term portion	25	25
Settlement outstanding amount	1	1
Environmental reserves
Loss Contingencies [Line Items]
Loss Contingency Accrual	26	26
Other reserves
Loss Contingencies [Line Items]
Loss Contingency Accrual	$ 0	$ 0