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Organization and Basis of Consolidation and Presentation (Details) shares in Millions, $ in Millions, $ in Millions	6 Months Ended
	Jun. 30, 2025 segment shares	Mar. 31, 2026 CAD ($)	Mar. 31, 2026 USD ($)
Organization
Number of operating segments | segment	2
NGL Business | Held-for-Sale | Forecast
Organization
Cash consideration		$ 5,150	$ 3,750
Derivative liability | $			$ 45
PAA | AAP
Organization
Ownership interest (units) | shares	232.9
Ownership interest (as a percent)	31.00%
AAP | PAGP
Organization
Ownership interest (as a percent)	85.00%

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