Purchases Of Common Stock For Treasury (Summary Of Purchases Of Common Stock) (Details) shares in Thousands, $ in Thousands	9 Months Ended
	May 31, 2024 USD ($) shares
Purchases Of Common Stock For Treasury [Abstract]
Shares withheld for taxes on stock-based compensation awards, Shares | shares	252
Open market purchases, shares | shares	397
Purchase of treasury shares, shares | shares	649
Shares withheld for taxes on stock-based compensation awards, Cost | $	$ 10,333
Open market purchases, Cost | $	15,511
Purchase of treasury shares, Cost | $	$ 25,844