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Equity , Allocation of Stock-Based Compensation Expense (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Total stock-based compensation expense $ 211.2 $ 193.8 $ 174.1
Income tax benefit associated with stock-based compensation 45.4 42.1 38.3
Cost of product revenue      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Total stock-based compensation expense 1.7 1.6 1.5
Cost of service revenue      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Total stock-based compensation expense 15.7 12.9 11.3
Research and development      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Total stock-based compensation expense 56.7 47.6 38.7
Sales and marketing      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Total stock-based compensation expense 110.0 108.4 101.7
General and administrative      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Total stock-based compensation expense 27.1 23.3 20.9
RSUs      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Total stock-based compensation expense 191.8 179.7 160.2
Stock options      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Total stock-based compensation expense 19.4 14.1 12.6
ESPP      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Total stock-based compensation expense $ 0.0 $ 0.0 $ 1.3