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Accumulated Other Comprehensive Loss (Reclassifications) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2026 | Mar. 31, 2025
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Financing and other revenue | $ 477,413 | $ 493,420
Income tax benefit | 22,336 | 11,310
Pension and postretirement benefit plans | 11,034 | 1,854
Total before tax | 80,474 | 46,732
Net income | 58,138 | 35,422
Reclassification out of Accumulated Other Comprehensive Loss | Available for sale securities |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Financing and other revenue | 0 | (505)
Income tax benefit | 0 | (126)
Net income | 0 | (379)
Reclassification out of Accumulated Other Comprehensive Loss | Pension and postretirement benefit plans |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Income tax benefit | (2,477) | (1,666)
Total before tax | (9,012) | (6,718)
Net income | (6,535) | (5,052)
Reclassification out of Accumulated Other Comprehensive Loss | Prior service costs |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Pension and postretirement benefit plans | (74) | (68)
Reclassification out of Accumulated Other Comprehensive Loss | Actuarial losses |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Pension and postretirement benefit plans | $ (8,938) | $ (6,650)

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