v3.26.1
BUSINESS SEGMENTS AND GEOGRAPHIC INFORMATION - Schedule of Reconciliation of Segment Operating Income (Loss) to Income from Continuing Operations before Income Taxes (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Segment Reporting Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Abstract]        
Operating income (loss) $ 188,211 $ (128,269) $ 91,380 $ 4,780
Gain on involuntary conversion 13,581 0 13,581 0
Gain on reimbursement of drilling equipment 6,036 6,773 18,099 26,149
Other gain (loss) on sale of assets 120,044 (1,347) 119,423 (2,136)
Corporate selling, general and administrative costs, corporate depreciation, corporate acquisition transaction and integration costs, corporate asset impairment charges, and corporate restructuring charges 65,849 65,506 207,373 209,407
Other income (expense)        
Interest and dividend income 2,280 2,856 7,193 31,854
Interest expense (24,439) (29,200) (75,860) (79,836)
Gain (loss) on investment securities (16,007) (337) (687) 14,084
Foreign currency exchange gain (loss) 1,885 (9,216) 4,864 (16,137)
Other (1,411) 31,258 (6,664) 33,214
Total other income (expense) (37,692) (4,639) (71,154) (16,821)
Income (loss) before income taxes 150,519 (132,908) 20,226 (12,041)
Operating Segments Excluding Intersegment Elimination        
Segment Reporting Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Abstract]        
Operating income (loss) 105,556 (63,985) 116,712 202,620
Segment Reconciling Items        
Segment Reporting Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Abstract]        
Operating income (loss) 1,344 (70,004) (7,276) (70,605)
Gain on involuntary conversion 13,581 0 13,581 0
Gain on reimbursement of drilling equipment 6,036 6,773 18,099 26,149
Other gain (loss) on sale of assets 120,044 (1,347) 119,423 (2,136)
Corporate, Non-Segment        
Segment Reporting Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Abstract]        
Corporate selling, general and administrative costs, corporate depreciation, corporate acquisition transaction and integration costs, corporate asset impairment charges, and corporate restructuring charges $ (57,006) $ (69,710) $ (176,435) $ (221,853)