ACCUMULATED OTHER COMPREHENSIVE INCOME/(LOSS) - Schedule of Amounts Reclassified From AOCI By Component (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Income, Net	$ 378,854	$ 410,482	$ 348,069
Tax Effect	(140,286)	(424,664)	(159,684)
Net Income/(Loss) Attributable to Common Shareholders	1,692,372	811,653	(442,240)
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net Income/(Loss) Attributable to Common Shareholders	(5,500)	(9,700)	(14,500)
Unrealized Loss on Marketable Securities, Net of Tax | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Income, Net	0	0	(1,600)
Tax Effect	0	0	400
Net Income/(Loss) Attributable to Common Shareholders	0	0	(1,200)
Defined Benefit Plans | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Tax Effect	2,000	1,700	6,400
Total pre-tax amount	(7,500)	(11,400)	(19,700)
Net Income/(Loss) Attributable to Common Shareholders	(5,500)	(9,700)	(13,300)
Amortization of Actuarial Losses | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Income, Net	(4,200)	(6,800)	(7,000)
Amortization of Prior Service Cost | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Income, Net	0	(300)	(300)
Settlement Losses | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Income, Net	$ (3,300)	$ (4,300)	$ (12,400)