Net Income/(Loss) Per Class A Share (Tables)

12 Months Ended

Dec. 31, 2021

Earnings Per Share [Abstract]

Calculation of basic and diluted net income per Class A share

The following table sets forth the computation of basic and diluted net income/(loss) per Class A share (in millions, except per share data):

	Year Ended December 31,
	2021		2020		2019
Basic Net Income/(Loss) per Class A Share
Net income/(loss) attributable to PAGP	$	60	$	(568)	$	331
Basic weighted average Class A shares outstanding	194		186		168
Basic net income/(loss) per Class A share	$	0.31	$	(3.06)	$	1.97
Diluted Net Income/(Loss) per Class A Share
Net income/(loss) attributable to PAGP	$	60	$	(568)	$	331
Incremental net income/(loss) attributable to PAGP resulting from assumed exchange of AAP units and AAP Management Units	—		(189)		2
Net income/(loss) attributable to PAGP including incremental net income/(loss) from assumed exchange of AAP units and AAP Management Units	$	60	$	(757)	$	333
Basic weighted average Class A shares outstanding	194		186		168
Dilutive shares resulting from assumed exchange of AAP units and AAP Management Units	—		60		2
Diluted weighted average Class A shares outstanding	194		246		170
Diluted net income/(loss) per Class A share	$	0.31	$	(3.07)	$	1.96