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v3.25.2

Acquisitions and Other Transactions (Whistler Joint Venture Transaction) (Details) - USD ($) $ in Millions |  | 6 Months Ended |
--- | --- | --- | ---
May 29, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | May 28, 2024
Business Combination [Line Items] |  |  |  |
Investments – redemptions, repayments, return of capital and sales proceeds |  | $ 60 | $ 134 |
WPC Parent, LLC |  |  |  |
Business Combination [Line Items] |  |  |  |
Gain (Loss) on Disposition of Stock in Subsidiary or Equity Method Investee | $ 151 |  |  |
Investments – redemptions, repayments, return of capital and sales proceeds | $ 134 |  |  |
WPC Parent, LLC | Enbridge Inc. |  |  |  |
Business Combination [Line Items] |  |  |  |
Ownership percentage | 19.00% |  |  |
WPC Parent, LLC | MPLX |  |  |  |
Business Combination [Line Items] |  |  |  |
Ownership percentage | 30.40% |  |  |
Whistler Pipeline, LLC | MPLX |  |  |  |
Business Combination [Line Items] |  |  |  |
Ownership percentage |  |  |  | 37.50%

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