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Related Party Transactions - Promissory Notes with our General Partner (Details) $ in Millions, $ in Millions	10 Months Ended	12 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2023 CAD ($)
Related Party Transactions
Related party interest expense		$ 386	$ 405	$ 425
8.25% note due April 2027 \| PAGP \| GP
Related Party Transactions
Related party note receivable	$ 379	379			$ 500
Related party note payable	$ 379	379			$ 500
Related party note payable and receivable interest rate (as a percent)	8.25%
Related party interest receivable	$ 10	10
Related party interest payable	$ 10	10
Related party interest income		25
Related party interest expense		$ 25