Consolidated Statements of Comprehensive Income (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013		Dec. 31, 2012
Revenues
Lease revenue	$ 1,086.6	$ 975.2		$ 917.0
Marine operating revenue	286.3	275.1		265.5
Other revenue	78.1	70.7		60.7
Total Revenues	1,451.0	1,321.0		1,243.2
Expenses
Maintenance expense	337.0	294.0		269.7
Marine operating expense	197.8	189.8		182.4
Depreciation	273.5	255.0		237.4
Operating lease expense	108.7	129.4		130.2
Other operating expense	28.9	26.1		24.2
Selling, general and administrative	189.2	178.3		160.2
Total Expenses	1,135.1	1,072.6		1,004.1
Other Income (Expense)
Net gain on asset dispositions	87.2	85.6		79.5
Interest expense, net	(158.4)	(166.6)		(166.6)
Other (expense) income	(13.5)	(8.4)		(8.2)
Income before Income Taxes and Share of Affiliates’ Earnings	231.2	159.0		143.8
Income Taxes	(75.7)	(65.5)		(26.1)
Share of Affiliates’ Earnings (net of tax)	49.5	75.8		19.6
Net Income	205.0	169.3		137.3
Other Comprehensive Income, net of taxes
Foreign currency translation adjustments	79.1	(25.8)		(25.0)
Unrealized gain (loss) on securities	0.1	(0.8)		(0.2)
Unrealized gain (loss) on derivative instruments	(3.0)	(22.4)		(11.7)
Post-retirement benefit plans	(29.5)	52.9		(12.4)
Other comprehensive income (loss)	(105.7)	101.9		24.5
Comprehensive Income	$ 99.3	$ 271.2		$ 161.8
Share Data
Basic earnings per share (in dollars per share)	$ 4.55	$ 3.64	[1]	$ 2.93
Average number of common shares (in shares)	45.0	46.4		46.8
Diluted earnings per share (in dollars per share)	$ 4.48	$ 3.59	[1]	$ 2.88
Average number of common shares and common share equivalents (in shares)	45.8	47.1		47.6
Dividends declared per common share (in dollars per share)	$ 1.32	$ 1.24		$ 1.20

[1] (1)Quarterly earnings per share may not be additive, as per share amounts are computed independently for each quarter and the full year is based on the respective weighted average common shares and common stock equivalents outstanding.