Consolidated Statements of Comprehensive Income - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenues
Lease revenue	$ 1,381.1	$ 1,251.4	$ 1,154.6
Non-dedicated engine revenue	64.6	37.6	1.5
MarineOperatingRevenue	0.0	6.9	18.9
Other revenue	139.8	115.0	98.0
Total Revenues	1,585.5	1,410.9	1,273.0
Expenses
Maintenance Expense	381.6	344.8	292.7
Marine operating expense	0.0	6.5	14.1
Depreciation expense	402.4	376.3	357.5
Operating Lease, Expense	33.9	36.0	36.1
Other operating expense	57.7	46.6	37.4
Selling, general and administrative	236.3	212.7	195.0
Total Expenses	1,111.9	1,022.9	932.8
Other Income (Expense)
Net gain on asset dispositions	138.3	130.3	77.9
Interest expense, net	(341.0)	(263.4)	(214.0)
Other expense	(9.5)	(9.4)	(27.0)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	261.4	245.5	177.1
Income Taxes	(60.0)	(58.7)	(54.8)
Share of Affiliates’ Earnings (net of tax)	82.8	72.4	33.6
Net Income	284.2	259.2	155.9
Other Comprehensive Income, net of taxes
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	(53.8)	45.8	(56.7)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	1.0	1.3	1.4
Post-retirement benefit plans	10.8	(3.1)	4.3
Other comprehensive income (loss)	(42.0)	44.0	(51.0)
Comprehensive Income	$ 242.2	$ 303.2	$ 104.9
Share Data
Earnings Per Share, Basic	$ 7.80	$ 7.13	$ 4.41
Average number of common shares (in shares)	35,800	35,700	35,400
Diluted earnings per share (in dollars per share)	$ 7.78	$ 7.12	$ 4.35
Average number of common shares and common share equivalents (in shares)	35,900	35,700	35,900