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Income Taxes (Tables)
 9 Months Ended
Sep. 30, 2017
Income Tax Disclosure [Abstract]  
Income Tax Provision (Benefit)
The income tax provision (benefit) consists of the following:
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
(millions)
2017
 
2016
 
2017
 
2016
Current (1)
$
22

 
$
148

 
$
71

 
$
213

Deferred
(115
)
 
(285
)
 
(988
)
 
(699
)
Total Income Tax Benefit
$
(93
)
 
$
(137
)
 
$
(917
)
 
$
(486
)
Effective Tax Rate
44.7
%
 
48.9
%
 
36.9
%
 
39.5
%

(1) Current income taxes are attributable to our operations in Israel and Equatorial Guinea.