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Variable Interest Entities (Tables)
9 Months Ended
Sep. 30, 2018
Variable Interest Entities [Abstract]  
Schedule of Financial Data of VIE
The following tables present selected financial data from the consolidated financial statements of WGP:

Three Months Ended
 
Nine Months Ended
 
September 30,
 
September 30,
millions
2018
 
2017
 
2018

2017
Statement of Operations Data
 
 
 
 
 
 
 
Total revenues and other
$
508

 
$
575

 
$
1,432

 
$
1,616

Operating income (loss)
200

 
179

 
461

 
523

Net income (loss)
155

 
147

 
340

 
424


 
Nine Months Ended
 
September 30,
millions
2018
 
2017
Statement of Cash Flows Data
 
 
 
Net cash provided by (used in) operating activities
$
749

 
$
642

Net cash provided by (used in) investing activities
(1,161
)
 
(515
)
Net cash provided by (used in) financing activities
465

 
(334
)

 
September 30,
 
December 31,
millions
2018
 
2017
Balance Sheet Data
 
 
 
Cash and cash equivalents
$
133

 
$
80

Net property, plant, and equipment
6,419

 
5,731

Total assets
9,034

 
8,016

Long-term debt
4,566

 
3,493

Total liabilities
5,417

 
4,071

Total equity and partners’ capital
3,617

 
3,945