Leases - Additional Information (Details) $ in Millions	3 Months Ended	6 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Operating Leased Assets [Line Items]
Total lease expense	$ 9.1	$ 17.6
Operating leases, weighted average remaining lease term	5 years	5 years
Operating leases, weighted average discount rate	1.67%	1.67%
Minimum
Operating Leased Assets [Line Items]
Remaining lease terms	1 year	1 year
Maximum
Operating Leased Assets [Line Items]
Remaining lease terms	11 years	11 years