Business Segment Information - Summarized Financial Information of Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Revenue from external customers	$ 1,468,711	$ 1,395,469	$ 2,928,217	$ 2,758,861
Net income	106,478	79,195	200,122	147,172
Domestic Operations
Segment Reporting Information [Line Items]
Revenue from external customers	1,427,060	1,353,793	2,845,247	2,678,566
Net income	99,921	74,684	188,058	138,895
International Operations
Segment Reporting Information [Line Items]
Revenue from external customers	41,651	41,676	82,970	80,295
Net income	$ 6,557	$ 4,511	$ 12,064	$ 8,277