Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2020	Oct. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	$ 2,345,569	$ 2,095,228
Ending balance	2,420,521	2,124,971
Foreign currency translation adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	45,657	(47,078)
OCI before reclassifications	(18,993)	993
Income taxes associated with OCI before reclassifications	0	0
Amounts reclassified from AOCI	0	0
Income taxes associated with amounts reclassified from AOCI	0	0
Ending balance	26,664	(46,085)
Unrealized gain (loss) on derivative
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(18,823)	(9,472)
OCI before reclassifications	732	(5,554)
Income taxes associated with OCI before reclassifications	(174)	1,337
Amounts reclassified from AOCI	3,639	647
Income taxes associated with amounts reclassified from AOCI	(865)	(152)
Ending balance	(15,491)	(13,194)
Other
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(696)	(1,048)
OCI before reclassifications	0	0
Income taxes associated with OCI before reclassifications	0	0
Amounts reclassified from AOCI	0	0
Income taxes associated with amounts reclassified from AOCI	0	0
Ending balance	(696)	(1,048)
AOCI including portion attributable to noncontrolling interest
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	26,138	(57,598)
OCI before reclassifications	(18,261)	(4,561)
Income taxes associated with OCI before reclassifications	(174)	1,337
Amounts reclassified from AOCI	3,639	647
Income taxes associated with amounts reclassified from AOCI	(865)	(152)
Ending balance	10,477	(60,327)
Foreign currency translation adjustment, attributable to noncontrolling interest
Accumulated Other Comprehensive Income (Loss) [Line Items]
Ending balance	(742)	(736)
Unrealized gain (loss) on derivatives, attributable to noncontrolling interest
Accumulated Other Comprehensive Income (Loss) [Line Items]
Ending balance	0	0
Other, attributable to noncontrolling interest
Accumulated Other Comprehensive Income (Loss) [Line Items]
Ending balance	0	0
AOCI, attributable to noncontrolling interest
Accumulated Other Comprehensive Income (Loss) [Line Items]
Ending balance	(742)	(736)
Foreign currency translation adjustment, attributable to parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Ending balance	27,406	(45,349)
Unrealized gain (loss) on derivative, attributable to parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Ending balance	(15,491)	(13,194)
Other, attributable to parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Ending balance	(696)	(1,048)
AOCI, attributable to parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	26,993	(57,004)
Ending balance	$ 11,219	$ (59,591)