Other Non-Current Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2019	Jun. 30, 2019
Payables and Accruals [Abstract]
Operating lease liabilities	$ 222.9
Post-employment retirement obligations	140.0	$ 130.8
Non-current income taxes	41.0	40.5
Acquisition related contingencies	15.8	26.3
Other	16.2	35.3
Total	$ 435.9	$ 232.8