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Financial Data of Business Segments (Details) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Mar. 31, 2023 USD ($) | Jun. 30, 2024 USD ($) Segment | Jun. 30, 2023 USD ($) | Dec. 31, 2023 USD ($)
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |
Net Income (Loss) Attributable to Parent | $ 44,400,000 | $ 63,300,000 |  | $ 118,700,000 | $ 140,700,000 |
Provision for Income Taxes, Equity Method Investment | 4,100,000 | 6,300,000 |  | 8,300,000 | 13,200,000 |
Lease Income | 339,600,000 | 308,600,000 |  | 672,900,000 | 610,600,000 |
Marine operating revenue | 0 | 2,000,000.0 |  | 0 | 5,500,000 |
Other Operating Income | 33,400,000 | 26,200,000 |  | 66,800,000 | 55,100,000 |
Total Revenues | 386,700,000 | 343,200,000 |  | 766,600,000 | 682,100,000 |
Marine operating expense | 0 | 2,400,000 |  | 0 | 4,400,000 |
Depreciation | 98,500,000 | 92,100,000 |  | 194,500,000 | 181,900,000 |
Operating Lease, Expense | 9,000,000.0 | 9,000,000.0 |  | 18,000,000.0 | 18,000,000.0 |
Other operating expense | 13,800,000 | 11,000,000.0 |  | 27,400,000 | 22,000,000.0 |
Total Expenses | 217,900,000 | 196,800,000 |  | 427,900,000 | 392,500,000 |
Gain (Loss) on Disposition of Assets, Net | 25,600,000 | 41,100,000 |  | 61,800,000 | 88,200,000 |
Interest expense, net | (82,800,000) | (63,700,000) |  | (160,600,000) | (122,700,000) |
Other (expense) income | (10,800,000) | (4,900,000) |  | (10,000,000.0) | (8,900,000) |
Share of affiliates' earnings (pre-tax) | 16,700,000 | 20,300,000 |  | 40,600,000 | 47,900,000 |
Segment profit (loss) | 117,500,000 | 139,200,000 |  | 270,500,000 | 294,100,000 |
Income tax benefit | 10,400,000 | 17,600,000 |  | 29,000,000.0 | 37,800,000 |
Selling, general and administrative | 58,600,000 | 52,000,000.0 |  | 114,500,000 | 102,400,000 |
Disposition Gains on Owned Assets | 19,800,000 | 36,900,000 |  | 53,500,000 | 81,600,000 |
Nonoperating Income, Residual Sharing Income | 100,000 | 200,000 |  | 200,000 | 400,000 |
Nonremarketing Disposition Gain (Loss) | 5,700,000 | 4,000,000.0 |  | 8,100,000 | 7,400,000 |
Portfolio Investments and Capital Additions | 442,000,000.0 | 486,600,000 |  | 820,600,000 | 873,600,000 |
Identifiable assets | 12,222,600,000 |  |  | 12,222,600,000 |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | (660,800,000) |  |  | (660,800,000) |  | $ (627,000,000.0)
Assets | (12,222,600,000) |  |  | $ (12,222,600,000) |  | (11,326,000,000)
Number of business segments | Segment |  |  |  | 3 |  |
Asset Impairment Charges |  |  |  | $ 0 | 1,200,000 |
Non-dedicated engine revenue | 13,700,000 | 6,400,000 |  | 26,900,000 | 10,900,000 |
Maintenance Expense | 96,600,000 | 82,300,000 |  | 188,000,000.0 | 166,200,000 |
Interest Income (Expense), Net | (82,800,000) | (63,700,000) |  | (160,600,000) | (122,700,000) |
Net gain on asset dispositions | 25,600,000 | 41,100,000 |  | 61,800,000 | 88,200,000 |
Rolls Royce |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |
Payment for Management Fee | 900,000 | 500,000 |  | 1,800,000 | 1,000,000 |
Payment for Management Fee | 900,000 | 500,000 |  | 1,800,000 | 1,000,000 |
Parent [Member] |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |
Income tax benefit | 14,500,000 | 23,900,000 |  | 37,300,000 | 51,000,000.0 |
Rail North America [Member] |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |
Lease Income | 242,100,000 | 218,900,000 |  | 478,600,000 | 434,000,000.0 |
Marine operating revenue |  | 0 |  |  | 0 |
Other Operating Income | 28,300,000 | 21,500,000 |  | 56,800,000 | 45,300,000 |
Total Revenues | 270,400,000 | 240,400,000 |  | 535,400,000 | 479,300,000 |
Marine operating expense |  | 0 |  |  | 0 |
Depreciation | 66,800,000 | 66,100,000 |  | 131,900,000 | 131,600,000 |
Operating Lease, Expense | 9,000,000.0 | 9,000,000.0 |  | 18,000,000.0 | 18,000,000.0 |
Other operating expense | 6,400,000 | 6,700,000 |  | 13,100,000 | 13,700,000 |
Total Expenses | 159,600,000 | 148,600,000 |  | 313,300,000 | 297,000,000.0 |
Gain (Loss) on Disposition of Assets, Net | 24,900,000 | 34,100,000 |  | 59,100,000 | 81,900,000 |
Other (expense) income | (300,000) | (2,100,000) |  | (2,400,000) | (2,500,000) |
Share of affiliates' earnings (pre-tax) | (200,000) | 0 |  | 0 | (400,000) |
Segment profit (loss) | 78,800,000 | 79,300,000 |  | 169,100,000 | 174,500,000 |
Disposition Gains on Owned Assets | 19,800,000 | 30,700,000 |  | 52,700,000 | 75,400,000 |
Nonoperating Income, Residual Sharing Income | 100,000 | 100,000 |  | 200,000 | 200,000 |
Nonremarketing Disposition Gain (Loss) | 5,000,000.0 | 3,300,000 |  | 6,200,000 | 6,300,000 |
Portfolio Investments and Capital Additions | 308,100,000 | 161,300,000 |  | 629,800,000 | 457,800,000 |
Identifiable assets | 7,427,500,000 |  |  | 7,427,500,000 |  | 6,993,800,000
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | (200,000) |  |  | (200,000) |  | 200,000
Asset Impairment Charges |  |  |  |  | 0 |
Maintenance Expense | 77,400,000 | 66,800,000 |  | 150,300,000 | 133,700,000 |
Interest Income (Expense), Net | (56,400,000) | (44,500,000) |  | (109,700,000) | (86,800,000) |
Net gain on asset dispositions | 24,900,000 | 34,100,000 |  | 59,100,000 | 81,900,000 |
Rail International |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |
Lease Income | 82,000,000.0 | 73,100,000 |  | 162,600,000 | 143,500,000 |
Marine operating revenue |  | 0 |  |  | 0 |
Other Operating Income | 3,200,000 | 3,100,000 |  | 6,300,000 | 6,000,000.0 |
Total Revenues | 85,200,000 | 76,200,000 |  | 168,900,000 | 149,500,000 |
Marine operating expense |  | 0 |  |  | 0 |
Depreciation | 19,400,000 | 16,600,000 |  | 38,300,000 | 32,300,000 |
Operating Lease, Expense | 0 | 0 |  | 0 | 0 |
Other operating expense | 3,600,000 | 2,300,000 |  | 7,100,000 | 4,500,000 |
Total Expenses | 41,200,000 | 33,500,000 |  | 81,100,000 | 67,300,000 |
Gain (Loss) on Disposition of Assets, Net | 700,000 | 700,000 |  | 2,000,000.0 | 1,500,000 |
Other (expense) income | (700,000) | (2,600,000) |  | (300,000) | (6,900,000) |
Share of affiliates' earnings (pre-tax) | 0 | 0 |  | 0 | 0 |
Segment profit (loss) | 26,500,000 | 27,300,000 |  | 55,300,000 | 50,800,000 |
Disposition Gains on Owned Assets | 0 | 100,000 |  | 100,000 | 500,000 |
Nonoperating Income, Residual Sharing Income | 0 | 0 |  | 0 | 0 |
Nonremarketing Disposition Gain (Loss) | 700,000 | 600,000 |  | 1,900,000 | 1,000,000.0 |
Portfolio Investments and Capital Additions | 59,600,000 | 77,300,000 |  | 109,500,000 | 158,400,000 |
Identifiable assets | 2,237,000,000 |  |  | 2,237,000,000 |  | 2,175,200,000
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 0 |  |  | 0 |  |
Asset Impairment Charges |  |  |  |  | 0 |
Gain (Loss) on Disposition of Business |  |  | $ 300,000 |  |  |
Maintenance Expense | 18,200,000 | 14,600,000 |  | 35,700,000 | 30,500,000 |
Interest Income (Expense), Net | (17,500,000) | (13,500,000) |  | (34,200,000) | (26,000,000.0) |
Net gain on asset dispositions | 700,000 | 700,000 |  | 2,000,000.0 | 1,500,000 |
Gain (Loss) on Disposition of Business |  |  | $ 300,000 |  |  |
Other |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |
Lease Income | 7,400,000 | 8,500,000 |  | 15,500,000 | 16,700,000 |
Marine operating revenue |  | 0 |  |  | 0 |
Other Operating Income | 1,900,000 | 1,600,000 |  | 3,700,000 | 3,800,000 |
Total Revenues | 9,300,000 | 10,100,000 |  | 19,200,000 | 20,500,000 |
Marine operating expense |  | 0 |  | 0 | 0 |
Depreciation | 3,700,000 | 3,300,000 |  | 7,300,000 | 6,500,000 |
Operating Lease, Expense | 0 | 0 |  |  | 0 |
Other operating expense | 1,900,000 | 600,000 |  | 2,800,000 | 1,500,000 |
Total Expenses | 6,600,000 | 4,800,000 |  | 12,100,000 | 10,000,000.0 |
Gain (Loss) on Disposition of Assets, Net | 0 | 300,000 |  | 100,000 | 300,000 |
Other (expense) income | (9,700,000) | (400,000) |  | (7,500,000) | 800,000 |
Share of affiliates' earnings (pre-tax) | 0 | 0 |  | 0 | 0 |
Segment profit (loss) | (6,200,000) | 6,000,000.0 |  | 2,000,000.0 | 13,900,000 |
Disposition Gains on Owned Assets | 0 | 200,000 |  | 100,000 | 200,000 |
Nonoperating Income, Residual Sharing Income | 0 | 0 |  | 0 | 0 |
Nonremarketing Disposition Gain (Loss) | 0 | 100,000 |  | 0 | 100,000 |
Portfolio Investments and Capital Additions | 3,000,000.0 | 9,000,000.0 |  | 10,000,000.0 | 18,400,000 |
Identifiable assets | 1,116,100,000 |  |  | 1,116,100,000 |  | 801,900,000
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 0 |  |  | 0 |  |
Asset Impairment Charges |  |  |  |  | 0 |
Maintenance Expense | 1,000,000.0 | 900,000 |  | 2,000,000.0 | 2,000,000.0 |
Interest Income (Expense), Net | 800,000 | 800,000 |  | 2,300,000 | 2,300,000 |
Net gain on asset dispositions | 0 | 300,000 |  | 100,000 | 300,000 |
Engine Leasing |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |
Lease Income | 8,100,000 | 8,100,000 |  | 16,200,000 | 16,400,000 |
Marine operating revenue |  | 2,000,000.0 |  |  | 5,500,000 |
Other Operating Income | 0 | 0 |  | 0 | 0 |
Total Revenues | 21,800,000 | 16,500,000 |  | 43,100,000 | 32,800,000 |
Marine operating expense |  | 2,400,000 |  |  | 4,400,000 |
Depreciation | 8,600,000 | 6,100,000 |  | 17,000,000.0 | 11,500,000 |
Operating Lease, Expense | 0 | 0 |  | 0 | 0 |
Other operating expense | 1,900,000 | 1,400,000 |  | 4,400,000 | 2,300,000 |
Total Expenses | 10,500,000 | 9,900,000 |  | 21,400,000 | 18,200,000 |
Gain (Loss) on Disposition of Assets, Net | 0 | 6,000,000.0 |  | 600,000 | 4,500,000 |
Other (expense) income | (100,000) | 200,000 |  | 200,000 | (300,000) |
Share of affiliates' earnings (pre-tax) | 16,900,000 | 20,300,000 |  | 40,600,000 | 48,300,000 |
Segment profit (loss) | 18,400,000 | 26,600,000 |  | 44,100,000 | 54,900,000 |
Disposition Gains on Owned Assets | 0 | 5,900,000 |  | 600,000 | 5,500,000 |
Nonoperating Income, Residual Sharing Income | 0 | 100,000 |  | 0 | 200,000 |
Nonremarketing Disposition Gain (Loss) | 0 | 0 |  | 0 | 0 |
Portfolio Investments and Capital Additions | 71,300,000 | 239,000,000.0 |  | 71,300,000 | 239,000,000.0 |
Identifiable assets | 1,442,000,000 |  |  | 1,442,000,000 |  | 1,355,100,000
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | (660,600,000) |  |  | (660,600,000) |  | $ 626,800,000
Asset Impairment Charges |  |  |  |  | 1,200,000 |
Non-dedicated engine revenue | 13,700,000 | 6,400,000 |  | 26,900,000 | 10,900,000 |
Maintenance Expense | 0 | 0 |  | 0 | 0 |
Interest Income (Expense), Net | (9,700,000) | (6,500,000) |  | (19,000,000.0) | (12,200,000) |
Net gain on asset dispositions | $ 0 | $ 6,000,000.0 |  | $ 600,000 | $ 4,500,000 |

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