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Net Income Per Class A Share (Tables)
 6 Months Ended
Jun. 30, 2017
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
June 30,
 
Six Months Ended
June 30,
 
2017
 
2016
 
2017
 
2016
Basic Net Income per Class A Share
 

 
 

 
 

 
 

Net income attributable to PAGP
$
24

 
$
42

 
$
65

 
$
78

Basic weighted average Class A shares outstanding
153

 
100

 
136

 
98

 
 
 
 
 
 
 
 
Basic net income per Class A share
$
0.16

 
$
0.41

 
$
0.47

 
$
0.80

 
 
 
 
 
 
 
 
Diluted Net Income per Class A Share
 

 
 

 
 

 
 

Net income attributable to PAGP
$
24

 
$
42

 
$
65

 
$
78

Incremental net income attributable to PAGP resulting from assumed exchange of AAP units and AAP Management Units
—

 
52

 
—

 
111

Net income attributable to PAGP including incremental net income from assumed exchange of AAP units and AAP Management Units
$
24

 
$
94

 
$
65

 
$
189

 
 
 
 
 
 
 
 
Basic weighted average Class A shares outstanding
153

 
100

 
136

 
98

Dilutive shares resulting from assumed exchange of AAP units and AAP Management Units
—

 
134

 
—

 
147

Diluted weighted average Class A shares outstanding
153

 
234

 
136

 
245

 
 
 
 
 
 
 
 
Diluted net income per Class A share
$
0.16

 
$
0.40

 
$
0.47

 
$
0.77