Fair Value of Financial Instruments - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	Mar. 31, 2022	Jun. 30, 2021
Cash and cash equivalents:
Money market funds	$ 0.0	$ 0.0
Other current assets:
Securities	0.6	0.7
Other non-current assets:
Securities	126.9	120.6
Derivative asset	28.1
Total assets as of period end	155.5	121.2
Liabilities:
Contingent consideration obligations	18.3	23.2
Total liabilities as of period end	18.3	23.2
Level 1
Cash and cash equivalents:
Money market funds	0.0	0.0
Other current assets:
Securities	0.6	0.7
Other non-current assets:
Securities	126.9	120.6
Derivative asset	0.0
Total assets as of period end	127.5	121.2
Liabilities:
Contingent consideration obligations	0.0	0.0
Total liabilities as of period end	0.0	0.0
Level 2
Cash and cash equivalents:
Money market funds	0.0	0.0
Other current assets:
Securities	0.0	0.0
Other non-current assets:
Securities	0.0	0.0
Derivative asset	28.1
Total assets as of period end	28.1	0.0
Liabilities:
Contingent consideration obligations	0.0	0.0
Total liabilities as of period end	0.0	0.0
Level 3
Cash and cash equivalents:
Money market funds	0.0	0.0
Other current assets:
Securities	0.0	0.0
Other non-current assets:
Securities	0.0	0.0
Derivative asset	0.0
Total assets as of period end	0.0	0.0
Liabilities:
Contingent consideration obligations	18.3	23.2
Total liabilities as of period end	18.3	23.2
Money Market Deposit Accounts
Cash and cash equivalents:
Money market funds	$ 0.0	$ 0.1