Partners' Capital and Distributions - Distributions, Class A (Details) - USD ($) $ / shares in Units, $ in Millions			12 Months Ended
	Feb. 14, 2025	Jan. 07, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Partners Capital and Distribution [Line Items]
Distributions paid			$ 1,569	$ 1,330	$ 1,083
Class A Shares
Partners Capital and Distribution [Line Items]
Percentage of available cash distributed (as a percent)			100.00%
Number of days after end of quarter within which distributions must be paid to shareholders (in days)			55 days
Class A Shares | Cash Distribution
Partners Capital and Distribution [Line Items]
Distributions to Class A Shareholders			$ 251	$ 209	$ 162
Cash distributions per Class A share (in dollars per share)			$ 1.2700	$ 1.0700	$ 0.8325
Class A Shares | Cash Distribution | Subsequent Event
Partners Capital and Distribution [Line Items]
Distributions to Class A Shareholders	$ 75
Distributions per Class A share declared (in dollars per share)		$ 0.38
Common Units | Cash Distribution | PAA
Partners Capital and Distribution [Line Items]
Cash distributions per Class A share (in dollars per share)			$ 1.2700	$ 1.0700	$ 0.8325
Distributions paid			$ 891	$ 748	$ 584
Common Units | Cash Distribution | PAA | AAP
Partners Capital and Distribution [Line Items]
Distributions paid			$ 296	$ 256	$ 201
Common Units | Cash Distribution | PAA | Subsequent Event
Partners Capital and Distribution [Line Items]
Distributions to Class A Shareholders	267
Common Units | Cash Distribution | PAA | Subsequent Event | AAP
Partners Capital and Distribution [Line Items]
Distributions paid	$ 88