Business Segment Information - Summarized Financial Information of Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Revenue from external customers	$ 1,459,506	$ 1,363,392
Net income	93,644	67,977
Domestic Operations
Segment Reporting Information [Line Items]
Revenue from external customers	1,418,187	1,324,773
Net income	88,137	64,211
International Operations
Segment Reporting Information [Line Items]
Revenue from external customers	41,319	38,619
Net income	$ 5,507	$ 3,766