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Debt (Tables)
9 Months Ended
Mar. 31, 2022
Debt Disclosure [Abstract]  
Convertible Debt
The net carrying amount of the liability component of the Notes was as follows:
March 31, 2022
(in millions)
Principal$1,000.0 
Unamortized debt discount(129.3)
Unamortized debt issuance costs(15.4)
Net carrying amount$855.3 

The following table sets forth the interest expense recognized related to the Notes:
Three Months Ended March 31,Nine Months Ended March 31,
2022202120222021
(in millions)
Amortization of debt discount$7.7 $3.9 $23.0 $3.9 
Amortization of debt issuance costs0.8 0.4 2.5 0.4 
Less: Interest capitalized(0.1)— (0.3)— 
Total interest expense related to the Notes$8.5 $4.3 $25.2 $4.3