CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Treasury Stock	Noncontrolling Interests
Beginning balance, shares at Aug. 31, 2020		129,060,664
Beginning balance at Aug. 31, 2020	$ 1,889,413	$ 1,290	$ 358,912	$ (103,764)	$ 1,807,826	$ (175,063)	$ 212
Beginning balance, treasury stock, shares at Aug. 31, 2020						(9,839,759)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	260,552				260,552
Other comprehensive income (loss)	24,914
Dividends	(43,295)
Issuance of stock under incentive and purchase plans, net of forfeitures	(3,807)		(26,280)			$ 22,473
Issuance of stock under incentive and purchase plans, net of forfeitures, shares						1,364,866
Stock-based compensation	23,381		23,381
Contribution from non-controlling interest	19						19
Reclassification of share-based liability awards	5,420		5,420
Ending balance, shares at May. 31, 2021		129,060,664
Ending balance at May. 31, 2021	2,156,597	$ 1,290	361,433	(78,850)	2,025,083	$ (152,590)	231
Ending balance, treasury stock, shares at May. 31, 2021						(8,474,893)
Beginning balance, shares at Feb. 28, 2021		129,060,664
Beginning balance at Feb. 28, 2021	2,009,492	$ 1,290	354,620	(102,140)	1,909,443	$ (153,952)	231
Beginning balance, treasury stock, shares at Feb. 28, 2021						(8,552,449)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	130,408				130,408
Other comprehensive income (loss)	23,290
Dividends	(14,768)				(14,768)
Issuance of stock under incentive and purchase plans, net of forfeitures	729		(633)			$ 1,362
Issuance of stock under incentive and purchase plans, net of forfeitures, shares						77,556
Stock-based compensation	7,446		7,446
Ending balance, shares at May. 31, 2021		129,060,664
Ending balance at May. 31, 2021	$ 2,156,597	$ 1,290	361,433	(78,850)	2,025,083	$ (152,590)	231
Ending balance, treasury stock, shares at May. 31, 2021						(8,474,893)
Beginning balance, shares at Aug. 31, 2021	129,060,664	129,060,664
Beginning balance at Aug. 31, 2021	$ 2,295,109	$ 1,290	368,064	(84,820)	2,162,925	$ (152,582)	232
Beginning balance, treasury stock, shares at Aug. 31, 2021	(8,474,075)					(8,474,075)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	$ 928,632				928,632
Other comprehensive income (loss)	(910)
Dividends	$ (51,003)
Treasury stock acquired, shares	(1,501,387)					(1,501,387)
Treasury stock acquired	$ (55,597)					$ (55,597)
Issuance of stock under incentive and purchase plans, net of forfeitures	(10,132)		(28,748)			$ 18,616
Issuance of stock under incentive and purchase plans, net of forfeitures, shares						1,405,205
Stock-based compensation	26,979		26,979
Contribution from non-controlling interest	0
Reclassification of share-based liability awards	$ 9,091		9,091
Ending balance, shares at May. 31, 2022	129,060,664	129,060,664
Ending balance at May. 31, 2022	$ 3,142,169	$ 1,290	375,386	(85,730)	3,040,554	$ (189,563)	232
Ending balance, treasury stock, shares at May. 31, 2022	(8,570,257)					(8,570,257)
Beginning balance, shares at Feb. 28, 2022		129,060,664
Beginning balance at Feb. 28, 2022	$ 2,869,947	$ 1,290	366,162	(91,876)	2,745,117	$ (150,978)	232
Beginning balance, treasury stock, shares at Feb. 28, 2022						(7,564,796)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	312,429				312,429
Other comprehensive income (loss)	6,146
Dividends	$ (16,992)				(16,992)
Treasury stock acquired, shares	(1,006,387)					(1,006,387)
Treasury stock acquired	$ (38,587)					$ (38,587)
Issuance of stock under incentive and purchase plans, net of forfeitures	587		585			$ 2
Issuance of stock under incentive and purchase plans, net of forfeitures, shares						926
Stock-based compensation	$ 8,639		8,639
Ending balance, shares at May. 31, 2022	129,060,664	129,060,664
Ending balance at May. 31, 2022	$ 3,142,169	$ 1,290	$ 375,386	$ (85,730)	$ 3,040,554	$ (189,563)	$ 232
Ending balance, treasury stock, shares at May. 31, 2022	(8,570,257)					(8,570,257)