Other Non-Current Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2020	Jun. 30, 2019
Payables and Accruals [Abstract]
Operating lease liabilities	$ 294.6
Post-employment retirement obligations	140.2	$ 130.8
Non-current income taxes	38.2	40.5
Acquisition related contingencies	15.7	26.3
Other	14.9	35.3
Total	$ 503.6	$ 232.8