Income Taxes - Components of Earnings (Losses) Before Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
U.S. loss									$ (302,027)	$ (34,241)	$ (15,207)
Non-U.S. income									238,099	163,054	137,401
Earnings (loss) before income taxes	$ 40,711	$ 33,338	$ (107,455)	$ (30,522)	$ 34,729	$ 27,015	$ 34,727	$ 32,342	$ (63,928)	$ 128,813	$ 122,194