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Accounts Receivable
3 Months Ended
Mar. 31, 2018
Accounts Receivable, Net, Current [Abstract]  
Accounts Receivable Text Block
Accounts Receivable

Accounts receivable consisted of the following:
 
 
March 31, 
 2018
 
December 31, 
 2017
 
 
(In millions)
Revenue
 
$
217

 
$
175

Joint interest
 
104

 
108

Other
 
22

 
25

Reserve for doubtful accounts
 
(16
)
 
(16
)
Total accounts receivable, net
 
$
327

 
$
292