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Consolidated Statement of Comprehensive Income (Unaudited) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jan. 31, 2019
Jan. 31, 2018
Jan. 31, 2019
Jan. 31, 2018
Statement of Comprehensive Income [Abstract]        
Net income (Loss), Including Portion Attributable to Noncontrolling Interest $ 131,373 $ 103,301 $ 245,456 $ 180,861
Other comprehensive income:        
Foreign currency translation adjustments 8,423 23,243 705 21,763
Comprehensive income, net of tax:        
Comprehensive income 139,796 126,544 246,161 202,624
Comprehensive income attributable to noncontrolling interest 0 45 0 90
Comprehensive Income (Loss), Net of Tax, Attributable to Parent $ 139,796 $ 126,499 $ 246,161 $ 202,534