v3.26.3
Equities - Schedule of Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Thousands
 12 Months Ended
Aug. 31, 2026
Aug. 31, 2025
Aug. 31, 2024
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning balance $ 11,080,174 $ 10,761,924 $ 10,452,389
Other comprehensive income (loss), net of tax 26,160 (9,830) (31,147)
Ending balance 11,644,845 11,080,174 10,761,924
Total      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning balance (306,372) (296,542) (265,395)
Amounts before reclassifications 19,686 (8,733) (24,744)
Amounts reclassified out 9,739 (2,519) (13,880)
Total other comprehensive income (loss), before tax 29,425 (11,252) (38,624)
Tax effect (3,265) 1,422 7,477
Other comprehensive income (loss), net of tax 26,160 (9,830) (31,147)
Ending balance (280,212) (306,372) (296,542)
Pension and Other Postretirement Benefits      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning balance (199,578) (195,973) (173,925)
Amounts before reclassifications (3,865) (17,460) (29,445)
Amounts reclassified out 14,833 12,129 180
Total other comprehensive income (loss), before tax 10,968 (5,331) (29,265)
Tax effect (4,361) 1,726 7,217
Other comprehensive income (loss), net of tax 6,607 (3,605) (22,048)
Ending balance (192,971) (199,578) (195,973)
Cash Flow Hedges      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning balance 2,763 1,777 2,032
Amounts before reclassifications 717 16,821 14,950
Amounts reclassified out (5,094) (15,507) (15,287)
Total other comprehensive income (loss), before tax (4,377) 1,314 (337)
Tax effect 1,076 (328) 82
Other comprehensive income (loss), net of tax (3,301) 986 (255)
Ending balance (538) 2,763 1,777
Foreign Currency Translation Adjustment      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning balance (109,557) (102,346) (93,502)
Amounts before reclassifications 22,834 (8,094) (10,249)
Amounts reclassified out 0 859 1,227
Total other comprehensive income (loss), before tax 22,834 (7,235) (9,022)
Tax effect 20 24 178
Other comprehensive income (loss), net of tax 22,854 (7,211) (8,844)
Ending balance $ (86,703) $ (109,557) $ (102,346)