Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2022	Jan. 31, 2021
Stockholders' Equity Note [Abstract]
Number of shares authorized to be repurchased (in shares)	13,000,000		13,000,000
Stock repurchased during the period (in shares)			1,800,000
Stock repurchased during the period			$ 115.6	$ 46.3
Shares with remaining authorization for repurchase under stock repurchase plan (in shares)	6,500,000		6,500,000
Dividends paid per share (in usd per share)	$ 0.22	$ 0.21	$ 0.44	$ 0.42