Consolidated Statements of Comprehensive Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues
Lease revenue	$ 1,140.5	$ 1,087.5	$ 1,088.5
MarineOperatingRevenue	19.1	15.6	8.2
Other revenue	97.8	106.1	105.4
Total Revenues	1,257.4	1,209.2	1,202.1
Expenses
Maintenance Expense	297.1	315.5	314.4
Marine operating expense	17.5	19.7	18.9
Depreciation	364.4	330.5	321.3
Operating Lease, Expense	39.2	49.3	54.4
Other operating expense	44.0	35.3	31.3
Selling, general and administrative	198.3	172.0	180.4
Total Expenses	960.5	922.3	920.7
Other Income (Expense)
Net gain on asset dispositions	105.9	41.7	51.6
Interest expense, net	(204.0)	(190.3)	(180.5)
Other (expense) income	(3.7)	(13.0)	(7.3)
Income before Income Taxes and Share of Affiliates’ Earnings	195.1	125.3	145.2
Income Taxes	(53.2)	(37.3)	(40.9)
Share of Affiliates’ Earnings (net of tax)	1.2	62.2	76.5
Income from continuing operations	143.1	150.2	180.8
Total Discontinued Operations, Net of Taxes	0.0	1.1	30.4
Net Income	143.1	151.3	211.2
Other Comprehensive Income, net of taxes
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	(51.7)	24.4	(10.1)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	1.9	(4.5)	3.9
Post-retirement benefit plans	26.7	6.2	7.2
Other comprehensive income (loss)		26.1	1.0
Comprehensive Income	$ 120.0	$ 177.4	$ 212.2
Income (Loss) from Continuing Operations, Per Basic Share	$ 4.04	$ 4.30	$ 5.07
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax, Per Basic Share	0	0.03	0.85
Share Data
Basic earnings per share (in dollars per share)	$ 4.04	$ 4.33	$ 5.92
Average number of common shares (in shares)	35.4	35.0	35.7
Income (Loss) from Continuing Operations, Per Diluted Share	$ 3.98	$ 4.24	$ 4.97
Diluted earnings per share (in dollars per share)	3.98	4.27	5.81
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax, Per Diluted Share	$ 0	$ 0.03	$ 0.84
Average number of common shares and common share equivalents (in shares)	36.0	35.4	36.4