v3.26.1
BUSINESS SEGMENTS (Summary of Certain Financial Information from Continuing Operations by Reportable Segment and Major Product) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Feb. 28, 2026
Feb. 28, 2025
Feb. 28, 2026
Feb. 28, 2025
Aug. 31, 2025
Segment Reporting Information [Line Items]          
Net sales $ 2,132,018 $ 1,754,376 $ 4,252,325 $ 3,663,978  
Cost of goods sold 1,744,113 1,534,829 3,457,282 3,136,551  
Selling, general and administrative expenses 233,170 167,560 428,790 345,418  
Depreciation and amortization 102,567 70,584 175,289 141,021  
Asset impairments   386   386  
Adjusted EBITDA reportable segments 321,666 161,225 666,082 395,903  
Interest expense 40,928 11,167 65,776 22,489  
Unrealized loss on undesignated commodity hedges (1,979) 8,136 6,084 6,110  
Corporate and Other expenses (70,410) (34,852) (126,258) (421,097)  
Earnings before income taxes 109,740 36,100 292,675 (195,200)  
Assets 9,561,593 6,689,710 9,561,593 6,689,710 $ 7,171,834
Capital expenditures 122,695 86,267 248,132 204,454  
Reportable Segment, Aggregation before Other Operating Segment          
Segment Reporting Information [Line Items]          
Net sales 2,156,410 1,774,111 4,292,103 3,700,092  
North America Steel Group          
Segment Reporting Information [Line Items]          
Net sales 1,632,492 1,403,346 3,311,324 2,938,095  
Adjusted EBITDA reportable segments 269,674 136,954 563,580 323,133  
Construction Solutions Group          
Segment Reporting Information [Line Items]          
Net sales 323,100 172,117 531,458 353,325  
Adjusted EBITDA reportable segments 53,420 23,519 93,001 46,179  
Europe Steel Group          
Segment Reporting Information [Line Items]          
Net sales 200,818 198,648 449,321 408,672  
Adjusted EBITDA reportable segments (1,428) 752 9,501 26,591  
Corporate and Other          
Segment Reporting Information [Line Items]          
Net sales (24,392) (19,735) (39,778) (36,114)  
Segments          
Segment Reporting Information [Line Items]          
Net sales 2,122,760 1,743,741 4,229,745 3,641,200  
Segments | Raw materials          
Segment Reporting Information [Line Items]          
Net sales 362,813 322,982 732,911 638,386  
Segments | Steel products          
Segment Reporting Information [Line Items]          
Net sales 836,914 751,893 1,755,327 1,539,495  
Segments | Downstream products          
Segment Reporting Information [Line Items]          
Net sales 562,220 494,916 1,164,935 1,088,526  
Segments | Construction products          
Segment Reporting Information [Line Items]          
Net sales 78,371 65,731 164,338 141,712  
Segments | Ground stabilization solutions          
Segment Reporting Information [Line Items]          
Net sales 49,882 48,194 122,473 104,706  
Segments | Other          
Segment Reporting Information [Line Items]          
Net sales 100,214 70,660 170,737 151,153  
Segments | Precast Products          
Segment Reporting Information [Line Items]          
Net sales 141,604   141,604    
Segments | Reportable Segment, Aggregation before Other Operating Segment          
Segment Reporting Information [Line Items]          
Depreciation and amortization 100,210 68,123 170,684 136,098  
Assets 8,855,789 5,718,592 8,855,789 5,718,592  
Capital expenditures 121,097 85,833 243,601 200,353  
Segments | North America Steel Group          
Segment Reporting Information [Line Items]          
Net sales 1,608,321 1,386,848 3,269,379 2,905,485  
Cost of goods sold 1,326,322 1,242,746 2,690,124 2,557,033  
Selling, general and administrative expenses 85,769 81,218 165,497 162,349  
Depreciation and amortization 51,252 49,053 101,793 97,927  
Asset impairments   383   383  
Unrealized loss on undesignated commodity hedges (1,979) 8,136 6,084 6,110  
Assets 4,634,875 4,223,610 4,634,875 4,223,610  
Capital expenditures 94,609 64,217 194,236 160,689  
Segments | North America Steel Group | Raw materials          
Segment Reporting Information [Line Items]          
Net sales 357,548 317,841 721,600 627,960  
Segments | North America Steel Group | Steel products          
Segment Reporting Information [Line Items]          
Net sales 670,831 592,549 1,396,722 1,218,014  
Segments | North America Steel Group | Downstream products          
Segment Reporting Information [Line Items]          
Net sales 505,260 428,459 1,037,013 956,057  
Segments | North America Steel Group | Construction products          
Segment Reporting Information [Line Items]          
Net sales 0 0 0 0  
Segments | North America Steel Group | Ground stabilization solutions          
Segment Reporting Information [Line Items]          
Net sales 0 0 0 0  
Segments | North America Steel Group | Other          
Segment Reporting Information [Line Items]          
Net sales 74,682 47,999 114,044 103,454  
Segments | North America Steel Group | Precast Products          
Segment Reporting Information [Line Items]          
Net sales 0   0    
Segments | Construction Solutions Group          
Segment Reporting Information [Line Items]          
Net sales 314,425 158,864 512,702 328,279  
Cost of goods sold 246,918 120,638 388,484 249,974  
Selling, general and administrative expenses 62,691 38,824 100,657 78,724  
Depreciation and amortization 39,929 10,864 50,684 21,552  
Asset impairments   0   0  
Unrealized loss on undesignated commodity hedges 0 0 0 0  
Assets 3,478,040 834,722 3,478,040 834,722  
Capital expenditures 15,433 11,948 24,368 19,646  
Segments | Construction Solutions Group | Raw materials          
Segment Reporting Information [Line Items]          
Net sales 0 0 0 0  
Segments | Construction Solutions Group | Steel products          
Segment Reporting Information [Line Items]          
Net sales 0 0 0 0  
Segments | Construction Solutions Group | Downstream products          
Segment Reporting Information [Line Items]          
Net sales 37,453 41,179 72,698 73,557  
Segments | Construction Solutions Group | Construction products          
Segment Reporting Information [Line Items]          
Net sales 78,371 65,731 164,338 141,712  
Segments | Construction Solutions Group | Ground stabilization solutions          
Segment Reporting Information [Line Items]          
Net sales 49,882 48,194 122,473 104,706  
Segments | Construction Solutions Group | Other          
Segment Reporting Information [Line Items]          
Net sales 7,115 3,760 11,589 8,304  
Segments | Construction Solutions Group | Precast Products          
Segment Reporting Information [Line Items]          
Net sales 141,604   141,604    
Segments | Europe Steel Group          
Segment Reporting Information [Line Items]          
Net sales 200,014 198,029 447,664 407,436  
Cost of goods sold 204,106 200,895 443,231 386,551  
Selling, general and administrative expenses 7,169 5,210 14,796 12,152  
Depreciation and amortization 9,029 8,206 18,207 16,619  
Asset impairments   3   3  
Unrealized loss on undesignated commodity hedges 0 0 0 0  
Assets 742,874 660,260 742,874 660,260  
Capital expenditures 11,055 9,668 24,997 20,018  
Segments | Europe Steel Group | Raw materials          
Segment Reporting Information [Line Items]          
Net sales 5,265 5,141 11,311 10,426  
Segments | Europe Steel Group | Steel products          
Segment Reporting Information [Line Items]          
Net sales 166,083 159,344 358,605 321,481  
Segments | Europe Steel Group | Downstream products          
Segment Reporting Information [Line Items]          
Net sales 19,507 25,278 55,224 58,912  
Segments | Europe Steel Group | Construction products          
Segment Reporting Information [Line Items]          
Net sales 0 0 0 0  
Segments | Europe Steel Group | Ground stabilization solutions          
Segment Reporting Information [Line Items]          
Net sales 0 0 0 0  
Segments | Europe Steel Group | Other          
Segment Reporting Information [Line Items]          
Net sales 9,159 8,266 22,524 16,617  
Segments | Europe Steel Group | Precast Products          
Segment Reporting Information [Line Items]          
Net sales 0   0    
Segments | Corporate and Other          
Segment Reporting Information [Line Items]          
Net sales 9,258 10,635 22,580 22,778  
Depreciation and amortization 2,357 2,461 4,605 4,923  
Assets 705,804 971,118 705,804 971,118  
Capital expenditures 1,598 434 4,531 4,101  
Segments | Corporate and Other | Raw materials          
Segment Reporting Information [Line Items]          
Net sales 0 0 0 0  
Segments | Corporate and Other | Steel products          
Segment Reporting Information [Line Items]          
Net sales 0 0 0 0  
Segments | Corporate and Other | Downstream products          
Segment Reporting Information [Line Items]          
Net sales 0 0 0 0  
Segments | Corporate and Other | Construction products          
Segment Reporting Information [Line Items]          
Net sales 0 0 0 0  
Segments | Corporate and Other | Ground stabilization solutions          
Segment Reporting Information [Line Items]          
Net sales 0 0 0 0  
Segments | Corporate and Other | Other          
Segment Reporting Information [Line Items]          
Net sales 9,258 10,635 22,580 22,778  
Segments | Corporate and Other | Precast Products          
Segment Reporting Information [Line Items]          
Net sales 0   0    
Intersegment Eliminations          
Segment Reporting Information [Line Items]          
Net sales 33,650 30,370 62,358 58,892  
Intersegment Eliminations | North America Steel Group          
Segment Reporting Information [Line Items]          
Net sales 24,171 16,498 41,945 32,610  
Intersegment Eliminations | Construction Solutions Group          
Segment Reporting Information [Line Items]          
Net sales 8,675 13,253 18,756 25,046  
Intersegment Eliminations | Europe Steel Group          
Segment Reporting Information [Line Items]          
Net sales 804 619 1,657 1,236  
Intersegment Eliminations | Segment Eliminations          
Segment Reporting Information [Line Items]          
Net sales $ (33,650) $ (30,370) $ (62,358) $ (58,892)