Other Non-Current Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2021	Jun. 30, 2020
Other Liabilities Disclosure [Abstract]
Operating lease liabilities	$ 263.1	$ 288.3
Post-employment retirement obligations	162.8	144.3
Non-current income taxes	48.2	37.4
Acquisition related contingencies	15.1	17.6
Other	48.0	24.8
Other non-current liabilities	$ 537.2	$ 512.4