Derivatives and Risk Management - Summary of Foreign Currency Exchange Derivatives (Details) $ in Millions, $ in Millions	Jun. 30, 2025 USD ($) DerivativeContracts	Jun. 30, 2025 CAD ($) DerivativeContracts	Dec. 31, 2024 USD ($) DerivativeContracts	Dec. 31, 2024 CAD ($) DerivativeContracts
Foreign Currency Fair Value Hedge Derivative [Line Items]
Number of contracts | DerivativeContracts	21	21	22	22
United States of America, Dollars [Member] | Foreign Exchange Contract [Member]
Foreign Currency Fair Value Hedge Derivative [Line Items]
Notional amount	$ 2		$ 2
Canada, Dollars [Member] | Foreign Exchange Contract [Member]
Foreign Currency Fair Value Hedge Derivative [Line Items]
Notional amount		$ 3		$ 2