Leases - Components of Lease Income (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Operating lease revenue: | ||
| Fixed lease revenue | $ 330.8 | $ 305.1 |
| Variable lease revenue | 25.6 | 24.6 |
| Operating Lease, Lease Income | 356.4 | 329.7 |
| Finance lease revenue | 3.2 | 3.6 |
| Total lease revenue | 359.6 | 333.3 |
| Additional lease revenue | 33.9 | 28.7 |
| Gain (Loss) On Finance Lease, Liability | $ 3.5 | $ 4.3 |
| X | ||||||||||
- Definition Gain (Loss) On Finance Lease, Liability No definition available.
|
| X | ||||||||||
- Definition gatxOperatingLeaseOtherIncome No definition available.
|
| X | ||||||||||
- Definition Amount of lease income from variable lease payments, interest income on direct financing lease and after offset of loss recognized at commencement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of lease income from operating, direct financing, and sales-type leases. Includes, but is not limited to, variable lease payments, interest income, profit (loss) recognized at commencement, and lease payments paid and payable to lessor. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of operating lease income from lease payments and variable lease payments paid and payable to lessor. Includes, but is not limited to, variable lease payments not included in measurement of lease receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of operating lease income from lease payments paid and payable to lessor. Excludes variable lease payments not included in measurement of lease receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of operating lease income from variable lease payments paid and payable to lessor, excluding amount included in measurement of lease receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References No definition available.
|