Net Income Per Class A Share (Tables)

9 Months Ended

Sep. 30, 2019

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 per Class A share (in millions, except per share data):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2019		2018		2019		2018
Basic Net Income per Class A Share
Net income attributable to PAGP	$	70	$	111	$	283	$	154
Basic weighted average Class A shares outstanding	168		158		163		157
Basic net income per Class A share	$	0.41	$	0.70	$	1.73	$	0.98
Diluted Net Income per Class A Share
Net income attributable to PAGP	$	70	$	111	$	283	$	154
Incremental net income attributable to PAGP resulting from assumed exchange of AAP Management Units	—		—		1		—
Net income attributable to PAGP including incremental net income from assumed exchange of AAP Management Units	$	70	$	111	$	284	$	154
Basic weighted average Class A shares outstanding	168		158		163		157
Dilutive shares resulting from assumed exchange of AAP Management Units	—		—		2		—
Diluted weighted average Class A shares outstanding	168		158		165		157
Diluted net income per Class A share	$	0.41	$	0.70	$	1.72	$	0.98