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Redeemable Noncontrolling Interest (Details)
$ in Millions
Feb. 27, 2019
Mar. 31, 2019
USD ($)
Noncontrolling Interest [Line Items]    
Payments for redeemable noncontrolling interest   $ 15.0
FTT    
Noncontrolling Interest [Line Items]    
Increase in minority interest purchase price over next 12 months 14