v3.26.1
Debt - Unamortized Discount and Debt Issuance Costs (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Mar. 31, 2026
Debt Instrument [Line Items]    
Total unamortized discount $ (8.4) $ (9.3)
Total debt issuance costs (29.2) (31.2)
Commercial paper    
Debt Instrument [Line Items]    
Total unamortized discount (0.4) (0.5)
Senior indebtedness | 4.900% 2028 Notes    
Debt Instrument [Line Items]    
Total unamortized discount (1.9) (2.2)
Total debt issuance costs (1.0) (1.1)
Senior indebtedness | 5.050% 2029 Notes    
Debt Instrument [Line Items]    
Total unamortized discount (3.0) (3.3)
Total debt issuance costs (1.2) (1.2)
Senior indebtedness | 5.050% 2030 Notes    
Debt Instrument [Line Items]    
Total unamortized discount (3.1) (3.3)
Total debt issuance costs (1.3) (1.4)
Senior subordinated convertible debt | 2024 Senior Convertible Debt    
Debt Instrument [Line Items]    
Total debt issuance costs (10.7) (11.4)
Senior subordinated convertible debt | 2026 Senior Convertible Debt    
Debt Instrument [Line Items]    
Total debt issuance costs $ (15.0) $ (16.1)