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Equity - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended
Mar. 31, 2020
Mar. 31, 2021
Dec. 31, 2020
Equity, Class of Treasury Stock [Line Items]      
Sale of stock, shares issued (in shares) 2,100,000    
Sale of stock, price per share (in dollars per share) $ 115.00    
Net proceeds from sale of stock $ 228.0    
Number of shares repurchased under share repurchase plan (in shares)   0  
Treasury shares that were previously surrendered by employees to satisfy tax withholdings (in shares)   1,200,000  
Treasury stock (in shares)   11,900,000 11,800,000
Over-Allotment Option      
Equity, Class of Treasury Stock [Line Items]      
Sale of stock, shares issued (in shares) 300,000    
Previous share repurchase programs      
Equity, Class of Treasury Stock [Line Items]      
Number of shares repurchased under share repurchase plan (in shares)   10,700,000