Consolidated Statements of Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues
Lease revenue	$ 274.1	$ 281.2	$ 546.8	$ 565.7
Marine operating revenue	55.1	57.3	72.1	77.6
Other revenue	19.2	20.4	45.6	50.0
Total Revenues	348.4	358.9	664.5	693.3
Expenses
Maintenance expense	84.9	86.5	162.8	165.0
Marine operating expense	38.0	37.4	50.9	49.7
Depreciation	77.3	75.8	149.3	145.1
Operating lease expense	15.2	18.5	31.0	35.3
Other operating expense	7.8	14.8	17.4	23.6
Selling, general and administrative	43.1	40.9	86.0	79.7
Total Expenses	266.3	273.9	497.4	498.4
Other Income (Expense)
Gain (Loss) on Sale of Assets and Asset Impairment Charges	22.0	36.9	46.9	60.1
Interest expense, net	(40.0)	(36.5)	(79.2)	(73.7)
Other (expense) income	(1.1)	(3.9)	(2.4)	(7.2)
Income before Income Taxes and Share of Affiliates’ Earnings	63.0	81.5	132.4	174.1
Income Taxes	(19.3)	(26.7)	(39.9)	(57.5)
Share of Affiliates’ Earnings (net of tax)	9.7	6.4	18.4	13.9
Net Income	53.4	61.2	110.9	130.5
Other Comprehensive Income, net of taxes
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	40.7	(20.7)	58.6	5.2
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	0.0	0.2	0.0	0.3
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	2.1	(4.8)	2.9	(7.3)
Post-retirement benefit plans	1.4	1.3	2.7	2.7
Other comprehensive income (loss)	44.2	(24.0)	64.2	0.9
Comprehensive Income	$ 97.6	$ 37.2	$ 175.1	$ 131.4
Share Data
Earnings Per Share, Basic	$ 1.37	$ 1.51	$ 2.83	$ 3.18
Average number of common shares (in shares)	39.0	40.6	39.2	41.1
Earnings Per Share, Diluted	$ 1.35	$ 1.49	$ 2.79	$ 3.15
Average number of common shares and common share equivalents (in shares)	39.5	41.1	39.7	41.5
Dividends declared per common share (in dollars per share)	$ 0.42	$ 0.40	$ 0.84	$ 0.80