v3.26.3
SEGMENT INFORMATION (Summary of Certain Financial Information from Continuing Operations by Reportable Segment) (Details) - USD ($)
$ in Thousands
12 Months Ended
Aug. 31, 2026
Aug. 31, 2025
Aug. 31, 2024
Segment Reporting [Line Items]      
Net sales $ 9,393,904 $ 7,798,480 $ 7,925,972
Cost of goods sold 7,642,218 6,578,324 6,567,287
Selling, general and administrative expenses 881,961 700,234 668,413
Depreciation and amortization 395,921 285,877 280,367
Asset impairments 21 4,607 6,708
Unrealized gain on undesignated commodity hedges 7,871 (2,804) (1,962)
Adjusted EBITDA reportable segments 1,486,429 949,488 1,096,435
Segment Reporting, Reconciliation [Abstract]      
Interest expense 143,337 45,498 47,893
Earnings before income taxes 711,011 107,545 635,671
Capital expenditures 579,844 402,821 324,271
Assets 10,257,897 7,171,834 6,817,839
Reportable Segments Total      
Segment Reporting [Line Items]      
Net sales 9,483,527 7,878,043 7,985,470
North America Steel Group      
Segment Reporting [Line Items]      
Net sales 7,083,137 6,150,802 6,383,106
Adjusted EBITDA reportable segments 1,134,540 742,485 944,388
Construction Solutions Group      
Segment Reporting [Line Items]      
Net sales 1,376,617 806,082 750,754
Adjusted EBITDA reportable segments 292,137 137,721 129,530
Europe Steel Group      
Segment Reporting [Line Items]      
Net sales 1,023,773 921,159 851,610
Adjusted EBITDA reportable segments 59,752 69,282 22,517
Corporate and Other      
Segment Reporting [Line Items]      
Net sales (89,623) (79,563) (59,498)
Segments      
Segment Reporting [Line Items]      
Net sales 9,356,936 7,749,655 7,875,693
Segments | Reportable Segments Total      
Segment Reporting [Line Items]      
Depreciation and amortization 386,664 275,804 270,719
Segment Reporting, Reconciliation [Abstract]      
Capital expenditures 572,332 395,445 315,804
Assets 9,144,813 5,939,897 5,758,325
Segments | North America Steel Group      
Segment Reporting [Line Items]      
Net sales 6,998,164 6,083,849 6,309,730
Cost of goods sold 5,817,405 5,286,310 5,319,787
Selling, general and administrative expenses 349,677 316,900 316,224
Depreciation and amortization 210,614 197,314 192,697
Asset impairments 0 383 6,558
Segment Reporting, Reconciliation [Abstract]      
Capital expenditures 458,052 323,517 250,599
Assets 4,885,782 4,306,295 4,219,603
Segments | Construction Solutions Group      
Segment Reporting [Line Items]      
Net sales 1,338,651 747,486 717,397
Cost of goods sold 985,468 547,607 512,883
Selling, general and administrative expenses 238,448 168,718 152,286
Depreciation and amortization 139,419 43,744 43,945
Asset impairments 17 4,220 0
Unrealized gain on undesignated commodity hedges 0 0 0
Segment Reporting, Reconciliation [Abstract]      
Capital expenditures 70,706 38,315 20,479
Assets 3,488,309 883,232 861,025
Segments | Europe Steel Group      
Segment Reporting [Line Items]      
Net sales 1,020,121 918,320 848,566
Cost of goods sold 968,993 859,269 839,872
Selling, general and administrative expenses 31,663 27,358 23,448
Depreciation and amortization 36,631 34,746 34,077
Asset impairments 4 4 150
Unrealized gain on undesignated commodity hedges 0 0 0
Segment Reporting, Reconciliation [Abstract]      
Capital expenditures 43,574 33,613 44,726
Assets 770,722 750,370 677,697
Segments | Corporate and Other      
Segment Reporting [Line Items]      
Net sales 36,968 48,825 50,279
Depreciation and amortization 9,257 10,073 9,648
Segment Reporting, Reconciliation [Abstract]      
Other segment 228,268 508,765 127,758
Capital expenditures 7,512 7,376 8,467
Assets 1,113,084 1,231,937 1,059,514
Eliminations      
Segment Reporting [Line Items]      
Net sales 126,591 128,388 109,777
Eliminations | North America Steel Group      
Segment Reporting [Line Items]      
Net sales 84,973 66,953 73,376
Eliminations | Construction Solutions Group      
Segment Reporting [Line Items]      
Net sales 37,966 58,596 33,357
Eliminations | Europe Steel Group      
Segment Reporting [Line Items]      
Net sales 3,652 2,839 3,044
Eliminations | Segment Eliminations      
Segment Reporting [Line Items]      
Net sales $ (126,591) $ (128,388) $ (109,777)