v3.26.1

Organization and Basis of Consolidation and Presentation (Details) shares in Millions, $ in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2026 USD ($) segment shares	Mar. 31, 2025 USD ($)	Mar. 31, 2026 CAD ($)
Organization Consolidation and Presentation of Financial Statements [Line Items]
Operating segments number \| segment	2
Current income tax expense (benefit)	$ 216	$ 7
Held-for-Sale \| NGL Business
Organization Consolidation and Presentation of Financial Statements [Line Items]
Cash consideration	3,750		$ 5,150
Derivative liability	15
Held-for-Sale \| NGL Business \| Plains Canada Liquid Pipelines ULC
Organization Consolidation and Presentation of Financial Statements [Line Items]
Current income tax expense (benefit)	$ 216
PAA \| AAP
Organization Consolidation and Presentation of Financial Statements [Line Items]
Ownership interest (units) \| shares	233.0
Ownership interest (as a percent)	31.00%
AAP \| PAGP
Organization Consolidation and Presentation of Financial Statements [Line Items]
Ownership interest (as a percent)	85.00%

Limited Liability Company (LLC) Or Limited Partnership (LP), Members Or Limited Partners, Ownership Interest, Units

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PLAINS ALL AMERICAN PIPELINE LP 10-Q