Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Percentage of voting equity interests acquired in a business combination achieved in stages, including equity interests in the acquiree held by the acquirer immediately before the acquisition date and acquired at the acquisition date.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Amount of increase in noncontrolling interest from a business combination.

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Change in the different classes of partners' capital accounts during the year due to acquisitions. Partners include general, limited and preferred partners.

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Total of all Partners' Capital (deficit) items which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest).

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Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Partners' Capital and Distributions - Consolidated Subsidiaries (Details) - USD ($) $ in Millions	1 Months Ended		12 Months Ended			15 Months Ended
	Nov. 30, 2022	Oct. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2022	Nov. 30, 2020
Subsidiary, Sale of Stock [Line Items]
Noncontrolling interests			$ 13,114	$ 12,644		$ 13,114
Cactus II Pipeline LLC
Subsidiary, Sale of Stock [Line Items]
Additional ownership interest acquired	5.00%
Partners' capital impact of business combination			526
Business Combination, Step Acquisition, Equity Interest in Acquiree, Including Subsequent Acquisition, Percentage	70.00%
Common Equity Repurchase Program
Subsidiary, Sale of Stock [Line Items]
Common equity repurchase program, authorized amount							$ 500
Noncontrolling Interests \| Cactus II Pipeline LLC
Subsidiary, Sale of Stock [Line Items]
Partners' capital impact of business combination			526
Noncontrolling interest, increase from business combination	$ 526
PAA \| Common Equity Repurchase Program
Subsidiary, Sale of Stock [Line Items]
Total purchase price of PAA common units repurchased			74	178	$ 50
Common equity repurchase program, remaining amount			198			198
Joint Venture Formation \| Plains Oryx Permian Basin LLC (Permian JV)
Subsidiary, Sale of Stock [Line Items]
Partners' capital impact of business combination			(26)	3,256		3,230
Joint Venture Formation \| Noncontrolling Interests \| Plains Oryx Permian Basin LLC (Permian JV)
Subsidiary, Sale of Stock [Line Items]
Partners' capital impact of business combination			$ (23)	$ 3,090
Noncontrolling interest, increase from business combination						3,067
Joint Venture Formation \| Partners’ Capital \| Plains Oryx Permian Basin LLC (Permian JV)
Subsidiary, Sale of Stock [Line Items]
Partners' capital impact of business combination						$ 163
PAA \| Common Units and Series A Preferred Units
Subsidiary, Sale of Stock [Line Items]
Noncontrolling interest, ownership percentage			69.00%			69.00%
PAA \| Series B Preferred Units
Subsidiary, Sale of Stock [Line Items]
Noncontrolling interest, ownership percentage			100.00%			100.00%
AAP
Subsidiary, Sale of Stock [Line Items]
Noncontrolling interest, ownership percentage			19.00%			19.00%
Consolidated subsidiary, ownership interest held by the parent			81.00%
Plains Oryx Permian Basin LLC (Permian JV) \| Joint Venture Formation
Subsidiary, Sale of Stock [Line Items]
Noncontrolling interest, ownership percentage			35.00%			35.00%
Consolidated subsidiary, ownership interest held by the parent		65.00%
Plains Oryx Permian Basin LLC (Permian JV) \| Oryx Midstream Holdings LLC \| Joint Venture Formation
Subsidiary, Sale of Stock [Line Items]
Noncontrolling interest, ownership percentage by parent		35.00%
Consolidated subsidiary, ownership interest held by the parent		65.00%
Cactus II Pipeline LLC
Subsidiary, Sale of Stock [Line Items]
Noncontrolling interest, ownership percentage			30.00%			30.00%
Cactus II Pipeline LLC \| Enbridge
Subsidiary, Sale of Stock [Line Items]
Noncontrolling interest, ownership percentage	30.00%
Red River
Subsidiary, Sale of Stock [Line Items]
Noncontrolling interest, ownership percentage			33.00%			33.00%