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Consolidated Statement of Comprehensive Income (Unaudited) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Apr. 30, 2018
Apr. 30, 2017
Apr. 30, 2018
Apr. 30, 2017
Statement of Comprehensive Income [Abstract]        
Net income (Loss), Including Portion Attributable to Noncontrolling Interest $ 127,405 $ 90,546 $ 308,266 $ 323,892
Other comprehensive income:        
Foreign currency translation adjustments (11,499) 5,281 10,264 (5,074)
Comprehensive income, net of tax:        
Comprehensive income 115,906 95,827 318,530 318,818
Comprehensive income attributable to noncontrolling interest 57 0 147 0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent $ 115,849 $ 95,827 $ 318,383 $ 318,818