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Related Party Transactions - Narrative (Details) $ in Millions, $ in Millions | 1 Months Ended | 6 Months Ended | 12 Months Ended | 22 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Feb. 28, 2025 USD ($) | Jul. 31, 2024 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2024 USD ($) shares | Dec. 31, 2023 USD ($) shares | Dec. 31, 2022 USD ($) | Dec. 31, 2024 USD ($) | Feb. 28, 2025 CAD ($) | Jul. 31, 2024 CAD ($) | Mar. 31, 2023 USD ($) | Mar. 31, 2023 CAD ($)
Related Party Transactions |  |  |  |  |  |  |  |  |  |  |
Proceeds from the issuance of related party notes |  |  |  | $ 629 |  |  |  |  |  |  |
Proceeds from related party debt |  |  |  | 629 |  |  |  |  |  |  |
Interest expense, net |  |  |  | 430 | $ 386 | $ 405 |  |  |  |  |
GP |  |  |  |  |  |  |  |  |  |  |
Related Party Transactions |  |  |  |  |  |  |  |  |  |  |
Costs reimbursed to general partner |  |  |  | 583 | 546 | $ 476 |  |  |  |  |
GP | PAGP | 8.25% note due April 2027 |  |  |  |  |  |  |  |  |  |  |
Related Party Transactions |  |  |  |  |  |  |  |  |  |  |
Related party note receivable |  |  |  |  |  |  |  |  |  | $ 370 | $ 500
Related party notes payable |  |  |  |  |  |  |  |  |  | $ 370 | $ 500
Related party note payable and receivable interest rate (as a percent) |  |  |  |  |  |  | 8.25% |  |  |  |
GP | PAGP | Notes Due In September 2034 At 6.50 Percent |  |  |  |  |  |  |  |  |  |  |
Related Party Transactions |  |  |  |  |  |  |  |  |  |  |
Related party note receivable |  | $ 629 |  |  |  |  |  |  | $ 865 |  |
Related party notes payable |  | 629 |  |  |  |  |  |  | $ 865 |  |
Related party note payable and receivable interest rate (as a percent) |  |  | 6.50% |  |  |  |  |  |  |  |
Proceeds from the issuance of related party notes |  | 629 |  |  |  |  |  |  |  |  |
Proceeds from related party debt |  | $ 629 |  |  |  |  |  |  |  |  |
GP | PAGP | Related Party Promissory Notes |  |  |  |  |  |  |  |  |  |  |
Related Party Transactions |  |  |  |  |  |  |  |  |  |  |
Related party note receivable |  |  | $ 948 | 948 | 379 |  | $ 948 |  |  |  |
Related party notes payable |  |  | 948 | 948 | 379 |  | 948 |  |  |  |
Related party interest payable |  |  | 27 | 27 | 10 |  | 27 |  |  |  |
Related party interest receivable |  |  | $ 27 | 27 | 10 |  | $ 27 |  |  |  |
Related party interest income |  |  |  | 48 | 25 |  |  |  |  |  |
Interest expense, net |  |  |  | $ 48 | $ 25 |  |  |  |  |  |
GP | PAGP | Notes Due In June 2035 at 5.75 Percent | Subsequent Event |  |  |  |  |  |  |  |  |  |  |
Related Party Transactions |  |  |  |  |  |  |  |  |  |  |
Related party note receivable | $ 330 |  |  |  |  |  |  | $ 473 |  |  |
Related party notes payable | $ 330 |  |  |  |  |  |  | $ 473 |  |  |
Related party note payable and receivable interest rate (as a percent) | 5.75% |  |  |  |  |  |  |  |  |  |
PAGP | Class C Shares |  |  |  |  |  |  |  |  |  |  |
Related Party Transactions |  |  |  |  |  |  |  |  |  |  |
Ownership interest (in units) | shares |  |  |  | 542,004,838 | 539,445,289 |  |  |  |  |  |

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