Business Segment Information - Summarized Financial Information of Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
Revenue from external customers	$ 1,551,918	$ 1,465,600	$ 4,480,135	$ 4,224,461
Net income	120,344	80,577	320,466	227,749
Domestic Operations
Segment Reporting Information [Line Items]
Revenue from external customers	1,505,037	1,419,358	4,350,284	4,097,924
Net income	113,536	74,885	301,594	213,780
International Operations
Segment Reporting Information [Line Items]
Revenue from external customers	46,881	46,242	129,851	126,537
Net income	$ 6,808	$ 5,692	$ 18,872	$ 13,969