Leases - Schedule of Supplemental Cash Flow and Other Information Related to Leases (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Leases [Abstract]
Operating cash flows from operating leases			$ 19.2
Right-of-use assets obtained in exchange for operating lease liabilities (non-cash)			313.6
Operating lease expense	$ 22.7		39.5
Short-term lease expense	0.5		0.5
Variable lease expense	$ 2.6		$ 4.3
Rent expense		$ 8.7		$ 14.4