Organization and Summary of Significant Accounting Policies - Equipment Held for Operating Lease (Details) $ in Millions	12 Months Ended
Dec. 31, 2023 USD ($) engine	Dec. 31, 2022 USD ($)
Equipment Held for Operating Lease
Operating lease, impairment loss	$ 2.0	$ 0.0
Write down of equipment	2.4	21.8
Expense related to accretion of debt issuance costs and discounts	$ 4.8	$ 4.4
Engines And Related Equipment
Equipment Held for Operating Lease
Estimated useful life	15 years
Residual value, percent	55.00%
Marine Vessels
Equipment Held for Operating Lease
Estimated useful life	18 years
Residual value, percent	15.00%
Spare part packages
Equipment Held for Operating Lease
Residual value, percent	25.00%
Older generation engines
Equipment Held for Operating Lease
Number of engines \| engine	24
Gross value	$ 17.2
Maximum
Equipment Held for Operating Lease
Estimated useful life	39 years
Maximum \| New engine
Equipment Held for Operating Lease
Estimated useful life	25 years
Maximum \| Aircraft
Equipment Held for Operating Lease
Estimated useful life	20 years
Residual value, percent	17.00%
Maximum \| Spare part packages
Equipment Held for Operating Lease
Estimated useful life	15 years
Maximum \| Older generation engines
Equipment Held for Operating Lease
Estimated useful life	83 months
Minimum
Equipment Held for Operating Lease
Estimated useful life	3 years
Minimum \| Aircraft
Equipment Held for Operating Lease
Estimated useful life	13 years
Minimum \| Spare part packages
Equipment Held for Operating Lease
Estimated useful life	14 years
Minimum \| Older generation engines
Equipment Held for Operating Lease
Estimated useful life	1 month

Amount of amortization expense attributable to debt discount (premium) and debt issuance costs.

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Amount of loss from impairment of right-of-use asset from operating lease.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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