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ACQUISITIONS AND DISPOSITIONS - Equity Investment Transactions Narrative (Details) $ in Millions, $ in Millions | May 29, 2024 CAD ($) | May 29, 2024 USD ($) | May 28, 2024
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Rio Bravo |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership interest (in percent) | 25.00% | 25.00% | 100.00%
Post-closing capital expenditure, amount |  | $ 150 |
Whistler Parent JV |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership interest (in percent) | 19.00% | 19.00% |
Carrying value of investment | $ 487 | $ 357 |
Reduction to property, plant and equipment, net and increase to long-term investments | $ 321 | $ 235 |
Whistler Parent JV | WhiteWaterI Squared |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership interest (in percent) | 50.60% | 50.60% |
Whistler Parent JV | MPLX |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership interest (in percent) | 30.40% | 30.40% |

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