Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]


	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		Total (1)

	(in millions, except per share data)
2020
Total revenues	$	8,269	$	3,225	$	5,833	$	5,963	$	23,290
Gross margin (2)	$	(190)	$	282	$	313	$	4	$	408
Operating income/(loss)	$	(2,775)	$	208	$	251	$	(67)	$	(2,383)
Net income/(loss)	$	(2,692)	$	137	$	139	$	(23)	$	(2,440)
Net income/(loss) attributable to PAGP	$	(581)	$	16	$	17	$	(20)	$	(568)
Basic net income/(loss) per Class A share	$	(3.18)	$	0.09	$	0.09	$	(0.11)	$	(3.06)
Diluted net income/(loss) per Class A share	$	(3.18)	$	0.09	$	0.09	$	(0.11)	$	(3.07)
Cash distributions per Class A share (3)	$	0.36	$	0.18	$	0.18	$	0.18	$	0.90
			0
2019
Total revenues	$	8,375	$	8,253	$	7,886	$	9,154	$	33,669
Gross margin (2)	$	790	$	525	$	565	$	402	$	2,282
Operating income	$	713	$	449	$	490	$	329	$	1,980
Net income	$	914	$	426	$	431	$	291	$	2,062
Net income attributable to PAGP	$	147	$	66	$	70	$	48	$	331
Basic net income per Class A share	$	0.92	$	0.41	$	0.41	$	0.26	$	1.97
Diluted net income per Class A share	$	0.92	$	0.40	$	0.41	$	0.26	$	1.96
Cash distributions per Class A share (3)	$	0.30	$	0.36	$	0.36	$	0.36	$	1.38

(1)The sum of the four quarters may not equal the total year due to rounding.

(2)Gross margin is calculated as Total revenues less (i) Purchases and related costs, (ii) Field operating costs, (iii) Depreciation and amortization and (iv) (Gains)/losses on asset sales and asset impairments, net.

(3)Represents cash distributions declared and paid in the period presented.