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Redeemable Noncontrolling Interests (Tables)
 12 Months Ended
Dec. 31, 2019
Redeemable Noncontrolling Interests [Abstract]  
Redeemable Noncontrolling Interest [Table Text Block]
 
2019
 
2018
 
2017
Balance at January 1
$
130.4

 
$
492.1

 
$
44.1

Other comprehensive income
(1.7
)
 
(19.3
)
 
32.8

Redemption value adjustment
(18.6
)
 
2.8

 
32.0

Redemption of shares
(89.2
)
 
(345.2
)
 
(3.5
)
Reclassification of noncontrolling interest
—

 
—

 
386.7

Balance at December 31
$
20.9

 
$
130.4

 
$
492.1