v3.19.2
Summary of Significant Accounting Policies - Additional Information (Details)
$ in Millions
12 Months Ended 36 Months Ended
Jun. 30, 2019
USD ($)
Jun. 30, 2019
USD ($)
Jun. 30, 2019
USD ($)
segment
Jun. 30, 2019
USD ($)
Segment
Jun. 30, 2019
USD ($)
Jun. 30, 2018
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2019
USD ($)
Jul. 01, 2019
USD ($)
Jul. 01, 2018
USD ($)
Property, Plant and Equipment [Line Items]                    
Number of reportable segments     2 2            
Investment securities maturity period for consideration as cash equivalents, in days 90 days                  
Inventory $ 21.1 $ 21.1 $ 21.1 $ 21.1 $ 21.1 $ 18.5   $ 21.1    
Advertising costs         4.1 6.3 $ 4.2      
Excess tax benefits from stock-based compensation awards         0.0 0.0 $ 40.6      
Retained earnings $ 2,087.7 $ 2,087.7 $ 2,087.7 $ 2,087.7 $ 2,087.7 $ 1,727.0   $ 2,087.7    
Software and Software Development Costs | Minimum                    
Property, Plant and Equipment [Line Items]                    
Estimated useful lives of assets 3 years                  
Software and Software Development Costs | Maximum                    
Property, Plant and Equipment [Line Items]                    
Estimated useful lives of assets 5 years                  
Forecast | Accounting Standards Update 2016-02                    
Property, Plant and Equipment [Line Items]                    
Operating lease liability expected to be recognized                 $ 253.0  
Operating lease right-of-use asset expected to be recognized                 $ 236.0  
Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09                    
Property, Plant and Equipment [Line Items]                    
Retained earnings                   $ 101.3
Five Largest Customers | Customer Concentration Risk | Revenue Benchmark [Member]                    
Property, Plant and Equipment [Line Items]                    
Percentage of consolidated revenues   22.00%       21.00% 20.00%      
Largest Customer | Customer Concentration Risk | Revenue Benchmark [Member]                    
Property, Plant and Equipment [Line Items]                    
Percentage of consolidated revenues               6.00%