Accumulated Other Comprehensive Loss (Reclassifications) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest expense, net	$ (101,460)	$ (110,094)	$ (98,769)
Financing revenue	1,892,629	2,026,598	2,078,925
Other components of net pension and postretirement cost	(7,543)	(89,044)	8,256
Income (loss) from continuing operations before income taxes	192,524	(52,327)	(43,920)
Tax provision (benefit)	47,827	(154,829)	17,347
Net income (loss)	144,697	(203,597)	(385,627)
Amounts Reclassified from AOCI | Cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cost of sales	0	0	(33)
Interest expense, net	0	10,124	9,708
Income (loss) from continuing operations before income taxes	0	10,124	9,675
Tax provision (benefit)	0	2,531	2,419
Net income (loss)	0	7,593	7,256
Amounts Reclassified from AOCI | Available-for-sale securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Financing revenue	(505)	(4,851)	(11)
Tax provision (benefit)	(126)	(1,213)	(3)
Net income (loss)	(379)	(3,638)	(8)
Amounts Reclassified from AOCI | Pension and postretirement benefit plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income (loss) from continuing operations before income taxes	(27,304)	(117,178)	(18,193)
Tax provision (benefit)	(6,547)	(29,019)	(4,461)
Net income (loss)	(20,757)	(88,159)	(13,732)
Amounts Reclassified from AOCI | Prior service costs
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other components of net pension and postretirement cost	(287)	(278)	(266)
Amounts Reclassified from AOCI | Actuarial losses
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other components of net pension and postretirement cost	(26,820)	(25,476)	(17,181)
Amounts Reclassified from AOCI | Settlement
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other components of net pension and postretirement cost	$ (197)	$ (91,424)	$ (746)