Financial Instruments and Risk Management (Narrative) (Details) |
3 Months Ended | ||
|---|---|---|---|
|
Mar. 31, 2026
USD ($)
Contract
|
Mar. 31, 2025
USD ($)
|
Dec. 31, 2025 |
|
| Derivative [Line Items] | |||
| Realized foreign exchange gain (loss) | $ (10,000,000) | $ (68,000,000) | |
| Credit risk, financial instrument, maximum exposure, based on gross fair value basis | 443,000,000 | ||
| Credit risk, financial instrument, maximum exposure, based on net fair value basis | $ 406,000,000 | ||
| Number of credit risk derivatives held | Contract | 0 | ||
| Collateral balances | $ 0 | ||
| Concentration risk, percentage | 91.00% | 94.00% | |
| Revenue [Member] | |||
| Derivative [Line Items] | |||
| Realized foreign exchange gain (loss) | $ (10,000,000) | 30,000,000 | |
| Foreign Currency Gain (Loss) [Member] | |||
| Derivative [Line Items] | |||
| Realized foreign exchange gain (loss) | $ 0 | (98,000,000) | |
| Montney Acquisition [Member] | Currency Swaps Maturing June 30, 2025 [Member] | Foreign Currency Gain (Loss) [Member] | |||
| Derivative [Line Items] | |||
| Realized foreign exchange gain (loss) | $ (97,000,000) | ||