CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
REVENUES
Total revenues	$ 10,642	$ 12,757	$ 22,119	$ 24,396
COSTS AND EXPENSES
Purchases and related costs	9,758	11,838	20,277	22,543
Field operating costs	286	280	585	553
General and administrative expenses	84	81	171	163
Depreciation and amortization	235	226	466	449
Losses on asset sales, net	42	2	29	3
Total costs and expenses	10,405	12,427	21,528	23,711
OPERATING INCOME	237	330	591	685
OTHER INCOME/(EXPENSE)
Equity earnings in unconsolidated entities	94	106	196	201
Gain on investments in unconsolidated entities, net			31
Interest expense (net of capitalized interest of $3, $2, $5 and $4, respectively)	(110)	(96)	(217)	(190)
Other income, net	8	8	14	3
INCOME FROM CONTINUING OPERATIONS BEFORE TAX	229	348	615	699
Current income tax expense from continuing operations	(1)	(52)	(6)	(68)
Deferred income tax expense from continuing operations	(15)	(12)	(40)	(20)
INCOME FROM CONTINUING OPERATIONS, NET OF TAX	213	284	569	611
INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX (NOTE 2)	70	32	206	42
NET INCOME	283	316	775	653
Net income attributable to noncontrolling interests from continuing operations	(203)	(254)	(513)	(542)
Net income attributable to noncontrolling interests from discontinued operations	(50)	(23)	(148)	(30)
Net income attributable to noncontrolling interests	(253)	(277)	(661)	(572)
Net income attributable to PAGP from continuing operations	10	30	56	69
Net income attributable to PAGP from discontinued operations	20	9	58	12
NET INCOME ATTRIBUTABLE TO PAGP	$ 30	$ 39	$ 114	$ 81
Class A Shares
OTHER INCOME/(EXPENSE)
Basic weighted average Class A shares outstanding (shares)	198,000	197,000	198,000	197,000
Basic Net Income per Class A Share:
Continuing operations (usd per share)	$ 0.05	$ 0.15	$ 0.29	$ 0.35
Discontinued operations (usd per share)	0.10	0.05	0.29	0.06
Basic net income per Class A share (usd per share)	$ 0.15	$ 0.20	$ 0.58	$ 0.41
Diluted weighted average Class A shares outstanding (shares)	198,000	232,000	233,000	197,000
Diluted Net Income per Class A Share:
Continuing operations (usd per share)	$ 0.05	$ 0.15	$ 0.29	$ 0.35
Discontinued operations (usd per share)	0.10	0.04	0.28	0.06
Diluted net income per Class A share (usd per share)	$ 0.15	$ 0.19	$ 0.57	$ 0.41
Product sales revenues
REVENUES
Total revenues	$ 10,197	$ 12,351	$ 21,243	$ 23,584
Services revenues
REVENUES
Total revenues	$ 445	$ 406	$ 876	$ 812