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Debt - Senior Notes (Details) - USD ($) $ in Millions | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Nov. 30, 2024 | Oct. 31, 2023 | Jan. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Jun. 15, 2025 | Jan. 31, 2025
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Repayments of PAA senior notes |  |  |  |  | $ 750 | $ 1,100 | $ 750 |  |
PAA Senior Notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument face value |  |  |  |  | $ 7,200 | $ 7,300 |  |  |
PAA Senior Notes | 5.70% senior notes due September 2034 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, interest rate (as a percent) |  |  |  |  | 5.70% |  |  |  |
Debt instrument, issued face value, percentage |  |  |  |  | 99.953% |  |  |  |
Debt instrument face value |  |  |  |  | $ 650 |  |  |  |
Long-term debt, before deducting unamortized discounts and debt issuance costs |  |  |  |  | $ 650 |  |  |  |
PAA Senior Notes | 5.95% Senior Notes Due June 2035 | Subsequent Event |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, interest rate (as a percent) |  |  |  |  |  |  |  |  | 5.95%
Debt instrument, issued face value, percentage |  |  |  |  |  |  |  | 99.761% |
Debt instrument face value |  |  |  |  |  |  |  |  | $ 1,000
PAA Senior Notes | 3.60% senior notes due November 2024 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, interest rate (as a percent) | 3.60% |  |  |  | 3.60% | 3.60% |  |  |
Long-term debt, before deducting unamortized discounts and debt issuance costs |  |  |  |  | $ 0 | $ 750 |  |  |
Repayments of PAA senior notes | $ 750 |  |  |  |  |  |  |  |
PAA Senior Notes | 3.85% senior notes due October 2023 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, interest rate (as a percent) |  | 3.85% |  |  |  |  |  |  |
Repayments of PAA senior notes |  | $ 700 |  |  |  |  |  |  |
PAA Senior Notes | 2.85% senior notes due January 2023 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, interest rate (as a percent) |  |  | 2.85% |  |  |  |  |  |
Repayments of PAA senior notes |  |  | $ 400 |  |  |  |  |  |
PAA Senior Notes | 3.65% senior notes due June 2022 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, interest rate (as a percent) |  |  |  | 3.65% |  |  |  |  |
Repayments of PAA senior notes |  |  |  | $ 750 |  |  |  |  |
Consolidated Finance Subsidiary Issuer |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Consolidated subsidiary, ownership interest held by the parent (as a percent) |  |  |  |  | 100.00% |  |  |  |

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