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Noncontrolling Interest (Tables)
 12 Months Ended
Dec. 31, 2016
Noncontrolling Interest.  
Changes in redeemable noncontrolling interest

Angola Deepwater Drilling Company Limited—Changes in redeemable noncontrolling interest were as follows (in millions):

 

 

 

 

 

 

 

 

 

 

 

 

 

Years ended December 31,

 

 

    

2016

    

2015

    

2014

 

Redeemable noncontrolling interest

 

 

 

 

 

 

 

 

 

 

Balance, beginning of period

 

$
5

 

$
11

 

$

 —

 

Net income (loss) attributable to noncontrolling interest

 

 
23

 

 
(6)

 

 
9

 

Reclassification from noncontrolling interest

 

 

 —

 

 

 —

 

 
2

 

Balance, end of period

 

$
28

 

$
5

 

$
11