Consolidated Statements of Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues
Lease revenue	$ 271.0	$ 274.1	$ 544.2	$ 546.8
Marine operating revenue	55.8	55.1	70.0	72.1
Other revenue	22.7	19.2	40.6	45.6
Total Revenues	349.5	348.4	654.8	664.5
Expenses
Maintenance expense	82.0	84.9	163.2	162.8
Marine operating expense	37.6	38.0	50.1	50.9
Depreciation	81.1	77.3	158.5	149.3
Operating lease expense	12.7	15.2	25.7	31.0
Other operating expense	9.1	7.8	17.7	17.4
Selling, general and administrative	46.2	42.6	91.1	85.3
Total Expenses	268.7	265.8	506.3	496.7
Other Income (Expense)
Net gain on asset dispositions	6.1	22.0	62.2	46.9
Interest expense, net	(42.2)	(40.0)	(82.1)	(79.2)
Other (expense) income	(9.8)	(1.6)	(11.1)	(3.1)
Income before Income Taxes and Share of Affiliates’ Earnings	34.9	63.0	117.5	132.4
Income Taxes	(9.1)	(19.3)	(29.7)	(39.9)
Share of Affiliates’ Earnings (net of tax)	13.0	9.7	27.3	18.4
Net Income	38.8	53.4	115.1	110.9
Other Comprehensive Income, net of taxes
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	(50.4)	40.7	(35.5)	58.6
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	2.2	2.1	0.7	2.9
Post-retirement benefit plans	1.9	1.4	3.8	2.7
Other comprehensive income (loss)	(46.3)	44.2	(31.0)	64.2
Comprehensive Income	$ (7.5)	$ 97.6	$ 84.1	$ 175.1
Share Data
Basic earnings per share (in dollars per share)	$ 1.03	$ 1.37	$ 3.05	$ 2.83
Average number of common shares (in shares)	37.7	39.0	37.8	39.2
Diluted earnings per share (in dollars per share)	$ 1.01	$ 1.35	$ 2.99	$ 2.79
Average number of common shares and common share equivalents (in shares)	38.4	39.5	38.5	39.7
Dividends declared per common share (in dollars per share)	$ 0.44	$ 0.42	$ 0.88	$ 0.84