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Noncontrolling Interest (Tables)
3 Months Ended
Mar. 31, 2019
Noncontrolling Interest [Abstract]  
Redeemable Noncontrolling Interest [Table Text Block] We present changes in amounts attributable to redeemable noncontrolling interests in the following table.
(in millions)
 
Redeemable noncontrolling interests as of December 31, 2018
$

Acquisition of redeemable noncontrolling interest (1)
8.4

Redeemable noncontrolling interests as of March 31, 2019
$
8.4

(1) Reflects our acquisition of redeemable noncontrolling interest related to our 2019 acquisition of Latitude.