Consolidated Statements of Comprehensive Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues
Lease revenue	$ 1,087.8	$ 1,098.1	$ 1,127.1
MarineOperatingRevenue	196.0	193.4	199.3
Other revenue	77.1	85.4	91.9
Total Revenues	1,360.9	1,376.9	1,418.3
Expenses
Maintenance expense	321.8	328.3	332.3
Marine operating expense	130.9	131.0	129.5
Depreciation	321.9	307.3	297.2
Operating lease expense	49.6	62.5	73.5
Other operating expense	33.1	34.4	43.8
Selling, general and administrative	191.1	180.0	169.0
Total Expenses	1,048.4	1,043.5	1,045.3
Other Income (Expense)
Net gain on asset dispositions	72.8	54.1	98.0
Interest expense, net	(168.6)	(160.5)	(148.1)
Other (expense) income	(21.6)	(12.6)	(17.5)
Income before Income Taxes and Share of Affiliates’ Earnings	195.1	214.4	305.4
Income Taxes	(34.1)	243.7	(95.7)
Share of Affiliates’ Earnings (net of tax)	50.3	43.9	47.4
Net Income	211.3	502.0	257.1
Other Comprehensive Income, net of taxes
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	(47.5)	93.2	(26.0)
Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax	0.0	0.0	0.3
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	4.5	4.8	0.6
Post-retirement benefit plans	7.4	3.5	12.8
Other comprehensive income (loss)	(35.6)	101.5	(12.3)
Comprehensive Income	$ 175.7	$ 603.5	$ 244.8
Share Data
Basic earnings per share (in dollars per share)	$ 5.62	$ 12.95	$ 6.35
Average number of common shares (in shares)	37.6	38.8	40.5
Diluted earnings per share (in dollars per share)	$ 5.52	$ 12.75	$ 6.29
Average number of common shares and common share equivalents (in shares)	38.3	39.4	40.9
Dividends declared per common share (in dollars per share)	$ 1.76	$ 1.68	$ 1.60