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Income Taxes - Reconciliation and Deferred Tax Assets (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Income Tax Examination [Line Items] |  |  |
Income/(loss) before tax | $ 1,417 | $ 721 | $ (2,599)
Partnership (earnings)/loss not subject to current Canadian tax | (686) | (370) | 2,221
Partnership earnings subject to current Canadian tax | $ 731 | $ 351 | $ (378)
Canadian federal and provincial corporate tax rate | 24.00% | 24.00% | 24.00%
Income tax expense/(benefit) at statutory rate | $ 175 | $ 84 | $ (91)
Canadian permanent differences and rate changes | 13 | (13) | 72
State income tax | 1 | 2 | 0
Total income tax expense/(benefit) | 189 | 73 | $ (19)
Deferred tax assets: |  |  |
Derivative instruments | 0 | 39 |
Lease liabilities | 45 | 48 |
Net operating losses | 0 | 2 |
Other | 16 | 17 |
Total deferred tax assets | 61 | 106 |
Deferred tax liabilities: |  |  |
Property and equipment in excess of tax values | (515) | (531) |
Derivative instruments | (46) | 0 |
Lease assets | (42) | (47) |
Other | (3) | (3) |
Total deferred tax liabilities | (606) | (581) |
Net deferred tax liabilities | (545) | (475) |
Other long-term assets, net |  |  |
Deferred tax liabilities: |  |  |
Other long-term assets, net | 0 | 2 |
Other long-term liabilities and deferred credits |  |  |
Deferred tax liabilities: |  |  |
Other long-term liabilities and deferred credits | $ (545) | $ (477) |

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