v3.25.2
Financial Data of Business Segments (Details)
 3 Months Ended 6 Months Ended
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2025
USD ($)
Segment
Jun. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
Segment Reporting [Abstract]          
Number of business segments | Segment     3    
Payment for Management Fee $ 1,300,000 $ 900,000 $ 2,700,000 $ 1,800,000  
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]          
Lease revenue 368,800,000 339,600,000 728,400,000 672,900,000  
Non-dedicated engine revenue 20,500,000 13,700,000 42,000,000.0 26,900,000  
Other revenue 41,200,000 33,400,000 81,700,000 66,800,000  
Total Revenues 430,500,000 386,700,000 852,100,000 766,600,000  
Maintenance expense 104,500,000 96,600,000 208,000,000.0 188,000,000.0  
Depreciation expense 106,900,000 98,500,000 210,500,000 194,500,000  
Operating lease expense 7,100,000 9,000,000.0 14,700,000 18,000,000.0  
Other operating expense 16,500,000 13,800,000 32,500,000 27,400,000  
Total Expenses 235,000,000.0 217,900,000 465,700,000 427,900,000  
Net gain on asset dispositions 40,500,000 25,600,000 73,900,000 61,800,000  
Interest expense, net (96,200,000) (82,800,000) (191,100,000) (160,600,000)  
Other (expense) income (1,100,000) (10,800,000) (3,800,000) (10,000,000.0)  
Share of affiliates' earnings (pre-tax) 22,500,000 16,700,000 55,900,000 40,600,000  
Segment profit (loss) 161,200,000 117,500,000 321,300,000 270,500,000  
Selling, general and administrative expense 58,200,000 58,600,000 114,800,000 114,500,000  
Income taxes 21,000,000.0 10,400,000 37,600,000 29,000,000.0  
Net income 75,500,000 44,400,000 154,100,000 118,700,000  
Net gains on disposition of owned assets 34,100,000 19,800,000 65,200,000 53,500,000  
Residual sharing income 200,000 100,000 300,000 200,000  
Non-remarketing net gains 6,200,000 5,700,000 12,000,000.0 8,100,000  
Asset impairments     3,600,000 0  
Net gain on asset dispositions 40,500,000 25,600,000 73,900,000 61,800,000  
Payments for (Proceeds from) Businesses, Interest in Affiliates, and Productive Assets Acquired 219,000,000.0 442,000,000.0 515,300,000 820,600,000  
Investments in affiliated companies 706,400,000   706,400,000   $ 663,300,000
Identifiable assets 13,200,200,000   13,200,200,000   12,296,500,000
Income taxes, affiliates' earnings 6,500,000 4,100,000 14,800,000 8,300,000  
Parent          
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]          
Income taxes 27,500,000 14,500,000 52,400,000 37,300,000  
Rail North America          
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]          
Lease revenue 262,800,000 242,100,000 522,800,000 478,600,000  
Other revenue 32,900,000 28,300,000 66,200,000 56,800,000  
Total Revenues 295,700,000 270,400,000 589,000,000.0 535,400,000  
Maintenance expense 84,300,000 77,400,000 168,000,000.0 150,300,000  
Depreciation expense 71,700,000 66,800,000 142,100,000 131,900,000  
Operating lease expense 7,100,000 9,000,000.0 14,700,000 18,000,000.0  
Other operating expense 7,800,000 6,400,000 15,300,000 13,100,000  
Total Expenses 170,900,000 159,600,000 340,100,000 313,300,000  
Net gain on asset dispositions 39,100,000 24,900,000 71,200,000 59,100,000  
Interest expense, net (64,400,000) (56,400,000) (129,100,000) (109,700,000)  
Other (expense) income (2,800,000) (300,000) (5,500,000) (2,400,000)  
Share of affiliates' earnings (pre-tax) (100,000) (200,000) (100,000) 0  
Segment profit (loss) 96,600,000 78,800,000 185,400,000 169,100,000  
Net gains on disposition of owned assets 34,100,000 19,800,000 64,600,000 52,700,000  
Residual sharing income 200,000 100,000 300,000 200,000  
Non-remarketing net gains 4,800,000 5,000,000.0 9,900,000 6,200,000  
Asset impairments     3,600,000    
Net gain on asset dispositions 39,100,000 24,900,000 71,200,000 59,100,000  
Payments for (Proceeds from) Businesses, Interest in Affiliates, and Productive Assets Acquired 132,200,000 308,100,000 359,900,000 629,800,000  
Identifiable assets 7,900,700,000   7,900,700,000   7,751,600,000
Rail North America | RailPulse          
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]          
Investments in affiliated companies 100,000   100,000   200,000
Rail International          
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]          
Lease revenue 89,600,000 82,000,000.0 173,200,000 162,600,000  
Other revenue 6,200,000 3,200,000 11,100,000 6,300,000  
Total Revenues 95,800,000 85,200,000 184,300,000 168,900,000  
Maintenance expense 18,900,000 18,200,000 37,400,000 35,700,000  
Depreciation expense 21,700,000 19,400,000 41,800,000 38,300,000  
Operating lease expense 0 0 0 0  
Other operating expense 4,900,000 3,600,000 9,500,000 7,100,000  
Total Expenses 45,500,000 41,200,000 88,700,000 81,100,000  
Net gain on asset dispositions 1,400,000 700,000 2,700,000 2,000,000.0  
Interest expense, net (20,000,000.0) (17,500,000) (39,100,000) (34,200,000)  
Other (expense) income 500,000 (700,000) (1,300,000) (300,000)  
Share of affiliates' earnings (pre-tax) 0 0 0 0  
Segment profit (loss) 32,200,000 26,500,000 57,900,000 55,300,000  
Net gains on disposition of owned assets 0 0 600,000 100,000  
Residual sharing income 0 0 0 0  
Non-remarketing net gains 1,400,000 700,000 2,100,000 1,900,000  
Asset impairments     0    
Net gain on asset dispositions 1,400,000 700,000 2,700,000 2,000,000.0  
Payments for (Proceeds from) Businesses, Interest in Affiliates, and Productive Assets Acquired 81,100,000 59,600,000 143,800,000 109,500,000  
Investments in affiliated companies 0   0   0
Identifiable assets 2,545,100,000   2,545,100,000   2,233,300,000
Engine Leasing          
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]          
Lease revenue 8,100,000 8,100,000 16,200,000 16,200,000  
Non-dedicated engine revenue 20,500,000 13,700,000 42,000,000.0 26,900,000  
Other revenue 0 0 0 0  
Total Revenues 28,600,000 21,800,000 58,200,000 43,100,000  
Maintenance expense 0 0 0 0  
Depreciation expense 9,500,000 8,600,000 18,900,000 17,000,000.0  
Operating lease expense 0 0 0 0  
Other operating expense 2,900,000 1,900,000 5,700,000 4,400,000  
Total Expenses 12,400,000 10,500,000 24,600,000 21,400,000  
Net gain on asset dispositions 0 0 0 600,000  
Interest expense, net (11,600,000) (9,700,000) (23,800,000) (19,000,000.0)  
Other (expense) income 100,000 (100,000) 100,000 200,000  
Share of affiliates' earnings (pre-tax) 22,600,000 16,900,000 56,000,000.0 40,600,000  
Segment profit (loss) 27,300,000 18,400,000 65,900,000 44,100,000  
Net gains on disposition of owned assets 0 0 0 600,000  
Residual sharing income 0 0 0 0  
Non-remarketing net gains 0 0 0 0  
Asset impairments     0    
Net gain on asset dispositions 0 0 0 600,000  
Payments for (Proceeds from) Businesses, Interest in Affiliates, and Productive Assets Acquired 0 71,300,000 0 71,300,000  
Investments in affiliated companies 706,300,000   706,300,000   663,100,000
Identifiable assets 1,658,300,000   1,658,300,000   1,653,400,000
Other          
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]          
Lease revenue 8,300,000 7,400,000 16,200,000 15,500,000  
Other revenue 2,100,000 1,900,000 4,400,000 3,700,000  
Total Revenues 10,400,000 9,300,000 20,600,000 19,200,000  
Maintenance expense 1,300,000 1,000,000.0 2,600,000 2,000,000.0  
Depreciation expense 4,000,000.0 3,700,000 7,700,000 7,300,000  
Operating lease expense 0 0 0 0  
Other operating expense 900,000 1,900,000 2,000,000.0 2,800,000  
Total Expenses 6,200,000 6,600,000 12,300,000 12,100,000  
Net gain on asset dispositions 0 0 0 100,000  
Interest expense, net (200,000) 800,000 900,000 2,300,000  
Other (expense) income 1,100,000 (9,700,000) 2,900,000 (7,500,000)  
Share of affiliates' earnings (pre-tax) 0 0 0 0  
Segment profit (loss) 5,100,000 (6,200,000) 12,100,000 2,000,000.0  
Net gains on disposition of owned assets 0 0 0 100,000  
Residual sharing income 0 0 0 0  
Non-remarketing net gains 0 0 0 0  
Asset impairments     0    
Net gain on asset dispositions 0 0 0 100,000  
Payments for (Proceeds from) Businesses, Interest in Affiliates, and Productive Assets Acquired 5,700,000 $ 3,000,000.0 11,600,000 $ 10,000,000.0  
Investments in affiliated companies 0   0   0
Identifiable assets $ 1,096,100,000   $ 1,096,100,000   $ 658,200,000