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Noncontrolling Interests (Tables)
 12 Months Ended
Dec. 31, 2016
Noncontrolling Interest [Abstract]  
Activity for equity attributable to noncontrolling interests
Activity for the equity attributable to noncontrolling interests for 2016, 2015 and 2014 is as follows:
 
2016

 
 
2015

 
2014

Balance at January 1
$
1,170

 
 
$
1,163

 
$
1,314

Net income
66

 
 
123

 
69

Distributions to noncontrolling interests
(63
)
 
 
(128
)
 
(47
)
Other changes, net
(7
)
 
 
12

 
(173
)
Balance at December 31
$
1,166

 
 
$
1,170

 
$
1,163