Investments in Affiliated Companies (Textual) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2025 USD ($) Business_Activity AircraftEngines	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Schedule of Equity Method Investments [Line Items]
Asset Impairment Charges	$ 3.6	$ 0.0	$ 1.5
Share of affiliates' earnings (net of tax)	117.3	82.8	72.4
Portfolio proceeds	$ 275.0	230.6	272.8
RRPF Joint Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Number of business activities | Business_Activity	2
Number of Aircraft Engines Under Leasing Arrangement | AircraftEngines	456
Share of affiliates' earnings (net of tax)	$ 117.5	82.8	72.8
RRPF Joint Ventures [Member] | Rolls-Royce [Member]
Schedule of Equity Method Investments [Line Items]
Number of Aircraft Engines Under Leasing Arrangement | AircraftEngines	182
RRPF Joint Ventures [Member] | Minimum [Member]
Schedule of Equity Method Investments [Line Items]
Lease term	5 years
RRPF Joint Ventures [Member] | Maximum [Member]
Schedule of Equity Method Investments [Line Items]
Lease term	12 years
RRPF Joint Ventures [Member] | Aircraft Engines [Member] | Minimum [Member]
Schedule of Equity Method Investments [Line Items]
Estimated useful lives of depreciable assets	18 years
RRPF Joint Ventures [Member] | Aircraft Engines [Member] | Maximum [Member]
Schedule of Equity Method Investments [Line Items]
Estimated useful lives of depreciable assets	30 years
Portfolio Management [Member]
Schedule of Equity Method Investments [Line Items]
Asset Impairment Charges	$ 0.0	$ 0.0	$ 1.2