Fair Value of Financial Instruments - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	Dec. 31, 2022	Jun. 30, 2022
Other current assets:
Securities	$ 0.6	$ 0.6
Other non-current assets:
Securities	127.7	118.0
Derivative asset	97.0	101.4
Total assets as of period end	225.3	220.1
Liabilities:
Contingent consideration obligations	12.0	12.9
Total liabilities as of period end	12.0	12.9
Level 1
Other current assets:
Securities	0.6	0.6
Other non-current assets:
Securities	127.7	118.0
Derivative asset	0.0	0.0
Total assets as of period end	128.4	118.7
Liabilities:
Contingent consideration obligations	0.0	0.0
Total liabilities as of period end	0.0	0.0
Level 2
Other current assets:
Securities	0.0	0.0
Other non-current assets:
Securities	0.0	0.0
Derivative asset	97.0	101.4
Total assets as of period end	97.0	101.4
Liabilities:
Contingent consideration obligations	0.0	0.0
Total liabilities as of period end	0.0	0.0
Level 3
Other current assets:
Securities	0.0	0.0
Other non-current assets:
Securities	0.0	0.0
Derivative asset	0.0	0.0
Total assets as of period end	0.0	0.0
Liabilities:
Contingent consideration obligations	12.0	12.9
Total liabilities as of period end	$ 12.0	$ 12.9