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Earnings Per Share (Tables)
 6 Months Ended
Jun. 30, 2018
Earnings Per Share [Abstract]  
Reconciliation of Numerators and Denominators of Earnings Per Share Calculations [Table Text Block]
Reconciliation of the numerators and denominators of the earnings per share calculations — 

Three Months Ended 
 June 30,

Six Months Ended 
 June 30,
 
2018
 
2017
 
2018
 
2017
Net income attributable to the parent company
$
124

 
$
71

 
$
232

 
$
146

Less: Redeemable noncontrolling interests adjustment to redemption value
—

 
(2
)
 
—

 
(2
)
Net income available to common stockholders - Numerator basic and diluted
$
124

 
$
69

 
$
232

 
$
144













Denominator:
 
 
 
 
 
 
 
Weighted-average common shares outstanding - Basic
145.1


144.8


145.3


144.7

Employee compensation-related shares, including stock options
1.4


1.4


1.7


1.4

Weighted-average common shares outstanding - Diluted
146.5


146.2


147.0


146.1