Summary of Significant Accounting Policies - Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2025	Apr. 30, 2024
Disaggregation of Revenue [Line Items]
Total service revenues and vehicle sales	$ 1,211,716	$ 1,127,259	$ 3,521,861	$ 3,167,824
Service revenues
Disaggregation of Revenue [Line Items]
Total service revenues and vehicle sales	1,034,836	946,630	3,012,453	2,667,911
Service revenues | United States | United States
Disaggregation of Revenue [Line Items]
Total service revenues and vehicle sales	898,625	830,680	2,626,745	2,349,241
Service revenues | International | International
Disaggregation of Revenue [Line Items]
Total service revenues and vehicle sales	136,211	115,950	385,708	318,670
Vehicle sales
Disaggregation of Revenue [Line Items]
Total service revenues and vehicle sales	176,880	180,629	509,408	499,913
Vehicle sales | United States | United States
Disaggregation of Revenue [Line Items]
Total service revenues and vehicle sales	107,832	88,236	302,097	241,307
Vehicle sales | International | International
Disaggregation of Revenue [Line Items]
Total service revenues and vehicle sales	$ 69,048	$ 92,393	$ 207,311	$ 258,606