Income Taxes (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Effective income tax rate	23.40%	24.50%	23.40%	14.00%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%		28.10%
Undistributed accumulated earnings of foreign subsidiary, provisional unrecognized deferred tax liability	$ 19,200,000		$ 19,200,000
Accrual On Foreign Withholding Taxes					$ 28,300,000
Change in tax rate, deferred tax liability, provisional income tax expense (benefit)					253,300,000
Transition tax for accumulated foreign earnings, provisional income tax expense (benefit)					$ 22,900,000
Change in Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Income Tax Expense (Benefit)			$ 0