Capital Stock Share Repurchases - Additional Information (Details) $ / shares in Units, € in Millions, $ in Millions	12 Months Ended		49 Months Ended	132 Months Ended	156 Months Ended
	Aug. 31, 2025 USD ($) $ / shares shares	Aug. 31, 2024 USD ($) $ / shares shares	Oct. 31, 2029	Aug. 31, 2022 USD ($)	Aug. 31, 2024 $ / shares shares	Oct. 10, 2025 EUR (€)	Oct. 10, 2025 USD ($)	Oct. 01, 2014 shares	Mar. 29, 2014 shares	Sep. 28, 2011 shares
Capital Unit [Line Items]
Common stock, shares authorized	168,000,000	168,000,000			168,000,000
Common stock, par value | $ / shares	$ 0.20	$ 0.20			$ 0.20
Common stock, shares issued	52,946,336	54,234,660			54,234,660
Cumulative Preferred Stock, shares authorized share	160,000
Cumulative Preferred Stock, par value | $ / shares	$ 1.00
Cumulative Preferred Stock, issued	0
Shares authorized in buyback program	10,000,000							7,000,000	7,000,000	7,000,000
Share Repurchase Program, Remaining Authorized, Number of Shares	1,017,849
Stock Repurchased During Period, Shares					31,781,381
Stock Repurchased During Period, Value | $				$ 907.6
Expected forfeiture rate	12.00%
Stock Repurchased and Retired During Period, Value | $	$ 68.7	$ 38.4
Stock Repurchased and Retired During Period, Shares	1,699,200	1,309,466
Subsequent Event
Capital Unit [Line Items]
Share Repurchase Program, Authorized, Amount						€ (200.0)	$ (200.0)
Share Repurchase Program, Expiration Date			Oct. 31, 2029
Common Class A
Capital Unit [Line Items]
Common stock, shares authorized	168,000,000
Common stock, par value | $ / shares	$ 0.20
Common stock, shares outstanding	52,946,336
Common Class B
Capital Unit [Line Items]
Common stock, shares authorized	1,500,000
Common stock, par value | $ / shares	$ 0.20
Common stock, shares issued	0
Common stock, shares outstanding		0			0