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Business Segment Information - Summarized Financial Information of Reportable Segments (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2020 | Mar. 31, 2019
Segment Reporting Information [Line Items] |  |  |  |
Revenue from external customers | $ 1,465,600 | $ 1,264,958 | $ 4,224,461 | $ 3,612,463
Net income | 80,577 | 68,145 | 227,749 | 215,574
Domestic Operations |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue from external customers | 1,419,358 | 1,225,531 | 4,097,924 | 3,494,606
Net income | 74,885 | 63,759 | 213,780 | 203,765
International Operations |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue from external customers | 46,242 | 39,427 | 126,537 | 117,857
Net income | $ 5,692 | $ 4,386 | $ 13,969 | $ 11,809

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