Capital Stock Share Repurchases - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended		132 Months Ended	156 Months Ended
	Aug. 31, 2026	Aug. 31, 2025	Aug. 31, 2022	Aug. 31, 2024
Capital Unit [Line Items]
Common stock, shares authorized	168,000,000	168,000,000
Common stock, par value	$ 0.20	$ 0.20
Common stock, shares issued	51,185,430	52,946,336
Cumulative Preferred Stock, shares authorized share	160,000
Cumulative Preferred Stock, par value	$ 1.00
Cumulative Preferred Stock, issued	0
Shares authorized in buyback program	200,000,000
Share Repurchase Program, Remaining Authorized, Number of Shares	119,700,000
Stock Repurchased During Period, Shares				33,860,026
Stock Repurchased During Period, Value			$ 988,700
Expected forfeiture rate	12.00%
Stock Repurchased and Retired During Period, Value	$ 81,100	$ 68,700
Stock Repurchased and Retired During Period, Shares	2,078,645	1,699,200
Share Repurchase Program, Excise Tax	$ 800	$ 700
Common Class A
Capital Unit [Line Items]
Common stock, shares authorized	168,000,000
Common stock, par value	$ 0.20
Common stock, shares outstanding	51,185,430
Common Class B
Capital Unit [Line Items]
Common stock, shares authorized	1,500,000
Common stock, par value	$ 0.20
Common stock, shares issued	0