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Quarterly Financial Data (Unaudited)
 12 Months Ended
Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]  
Quarterly Financial Data (Unaudited)
Quarterly Financial Data (Unaudited)

 
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
 
Total (1)
 
(in millions, except per share data)
2016
 
 
 
 
 
 
 
 
 
Total revenues
$
4,111

 
$
4,950

 
$
5,170

 
$
5,952

 
$
20,182

Gross margin (2)
$
349

 
$
218

 
$
419

 
$
286

 
$
1,272

Operating income
$
281

 
$
145

 
$
348

 
$
217

 
$
990

Net income
$
177

 
$
82

 
$
279

 
$
122

 
$
660

Net income/(loss) attributable to PAGP
$
36

 
$
42

 
$
24

 
$
(8
)
 
$
94

Basic net income/(loss) per Class A share
$
0.37

 
$
0.43

 
$
0.24

 
$
(0.08
)
 
$
0.94

Diluted net income/(loss) per Class A share
$
0.37

 
$
0.40

 
$
0.24

 
$
(0.08
)
 
$
0.94

Cash distributions per Class A share (3)
$
0.62

 
$
0.62

 
$
0.62

 
$
0.55

 
$
2.40

 
 
 
 
 
 
 
 
 
 
2015
 
 
 
 
 
 
 
 
 
Total revenues
$
5,942

 
$
6,663

 
$
5,551

 
$
4,996

 
$
23,152

Gross margin (2) 
$
449

 
$
290

 
$
394

 
$
405

 
$
1,539

Operating income
$
370

 
$
210

 
$
334

 
$
343

 
$
1,258

Net income
$
262

 
$
103

 
$
228

 
$
216

 
$
809

Net income attributable to PAGP
$
31

 
$
30

 
$
32

 
$
25

 
$
118

Basic net income per Class A share
$
0.37

 
$
0.37

 
$
0.37

 
$
0.29

 
$
1.41

Diluted net income per Class A share
$
0.37

 
$
0.37

 
$
0.37

 
$
0.29

 
$
1.41

Cash distributions per Class A share (3)
$
0.54

 
$
0.59

 
$
0.60

 
$
0.62

 
$
2.35

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