Stockholders' Equity - Determining fair value (Details)	12 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2021
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility (range)		35.00%	29.00%
Weighted-average expected volatility	30.67%	35.00%	29.00%
Risk-free interest rate (range)		2.73%	0.62%
Expected dividend yield	0.63%	0.61%	0.45%
Employee Stock Option | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility (range)	30.41%
Risk-free interest rate (range)	3.52%
Employee Stock Option | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility (range)	33.19%
Risk-free interest rate (range)	4.46%
Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average expected volatility	42.00%	23.00%	34.00%
Employee Stock | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility (range)	38.00%	26.00%	31.00%
Risk-free interest rate (range)	1.59%	0.04%	0.02%
Expected dividend yield	0.74%	0.47%	0.60%
Employee Stock | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility (range)	48.00%	39.00%	36.00%
Risk-free interest rate (range)	4.74%	0.44%	0.17%
Expected dividend yield	0.81%	0.59%	0.75%