Equities Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Nov. 30, 2023	Nov. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 10,452,389	$ 9,461,266
Other Comprehensive Income (Loss), Net of Tax	(7,302)	(13,618)
Ending Balance	10,697,389	9,728,845
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(173,925)	(168,640)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	0	(66)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	23	5,560
Other Comprehensive Income (Loss), before Tax	23	5,494
Other Comprehensive Income (Loss), Tax	(6)	3,030
Other Comprehensive Income (Loss), Net of Tax	17	8,524
Ending Balance	(173,908)	(160,116)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	2,032	8,843
Other Comprehensive Income (Loss), before Reclassifications, before Tax	2,280	(33,899)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	(7,790)	7,229
Other Comprehensive Income (Loss), before Tax	(5,510)	(26,670)
Other Comprehensive Income (Loss), Tax	1,349	6,463
Other Comprehensive Income (Loss), Net of Tax	(4,161)	(20,207)
Ending Balance	(2,129)	(11,364)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(93,502)	(95,538)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	(3,350)	(2,227)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	0	0
Other Comprehensive Income (Loss), before Tax	(3,350)	(2,227)
Other Comprehensive Income (Loss), Tax	192	292
Other Comprehensive Income (Loss), Net of Tax	(3,158)	(1,935)
Ending Balance	(96,660)	(97,473)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(265,395)	(255,335)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	(1,070)	(36,192)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	(7,767)	12,789
Other Comprehensive Income (Loss), before Tax	(8,837)	(23,403)
Other Comprehensive Income (Loss), Tax	1,535	9,785
Other Comprehensive Income (Loss), Net of Tax	(7,302)	(13,618)
Ending Balance	$ (272,697)	$ (268,953)