Leases - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Dec. 31, 2019	Dec. 31, 2019
Leases [Abstract]
Operating lease costs	$ 2.4	$ 4.7
Cash paid for amounts included in the measurement of operating lease liabilities	2.4	4.7
Operating lease liabilities arising from obtaining operating right of-use assets	$ 3.5	$ 3.7