Other Non-Current Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2020	Jun. 30, 2019
Other Liabilities Disclosure [Abstract]
Operating lease liabilities	$ 288.3
Post-employment retirement obligations	144.3	$ 130.8
Non-current income taxes	37.4	40.5
Acquisition related contingencies	17.6	26.3
Other	24.8	35.3
Other non-current liabilities	$ 512.4	$ 232.8