Equity-Indexed Compensation Plans (Details) shares in Millions, $ in Millions	Dec. 31, 2023 USD ($) shares
Equity-Indexed Compensation Plans
LTIP awards authorized (in units)	43.5
LTIP awards available (in units)	17.4
LTIP awards outstanding (in units)	12.2
LTIP awards outstanding including DERs (in units)	9.6
Probable vesting, unrecognized fair value | $	$ 73
Plains All American 2021 Long-Term Incentive Plan
Equity-Indexed Compensation Plans
LTIP awards authorized (in units)	28.8
Plains All American PNG Successor Long-Term Incentive Plan
Equity-Indexed Compensation Plans
LTIP awards authorized (in units)	1.3
Plains All American GP LLC 2006 Long-Term Incentive Tracking Unit Plan
Equity-Indexed Compensation Plans
LTIP awards authorized (in units)	13.4