Leases - Schedule of Supplemental Cash Flow and Other Information Related to Leases (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Operating cash flows from operating leases			$ 30.2
Right-of-use assets obtained in exchange for operating lease liabilities (non-cash)			321.2
Operating lease expense	$ 23.5		63.0
Variable lease expense	3.6		7.9
Short-term lease expense	$ 0.1		$ 0.6
Rent expense		$ 10.4		$ 24.7