Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Effective income tax rate (benefit) expense, percent	22.30%	14.80%
U.S. statutory rate	21.00%
Unrecognized tax benefits	$ 40.5		$ 42.8
Liability for uncertainty in income taxes, current	7.4
Liability for uncertain tax positions, noncurrent	33.1
Unrecognized tax benefits that would impact effective tax rate	37.7
Interest and penalties accrued	$ 3.6		$ 3.8