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Acquisitions (Details) - USD ($)
$ in Millions
Oct. 18, 2018
Oct. 31, 2018
Jul. 31, 2018
Business Acquisition [Line Items]      
Goodwill   $ 305.4 $ 238.4
Redeemable non-controlling interest   $ 12.9 $ 0.0
BOFA International LTD      
Business Acquisition [Line Items]      
Business acquisition, percentage of voting interests acquired 88.00%    
Business combination, consideration transferred $ 98.2    
Cash received for working capital adjustment 2.2    
Net tangible assets 12.2    
Intangibles acquired 48.8    
Goodwill 71.0    
Deferred tax liabilities 8.6    
Assumed debt $ 14.3    
Remaining voting interest obligated to acquire (as a percentage) 12.00%    
Redeemable non-controlling interest $ 13.1    
BOFA International LTD | Minimum      
Business Acquisition [Line Items]      
Estimated useful lives of intangibles (in years) 5 years    
BOFA International LTD | Maximum      
Business Acquisition [Line Items]      
Estimated useful lives of intangibles (in years) 15 years