Consolidated Statements of Comprehensive Income Statement - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Lease Income	$ 281.2	$ 280.6	$ 565.7	$ 558.9
Cargo and Freight Revenue	57.3	66.0	77.6	90.2
Other Nonoperating Income	20.4	18.7	50.0	35.9
Revenues	358.9	365.3	693.3	685.0
Cost of Property Repairs and Maintenance	86.5	80.2	165.0	158.5
Marine Operating Expense	37.4	47.3	49.7	66.2
Depreciation, Nonproduction	75.8	74.4	145.1	142.9
Operating Leases, Rent Expense, Net	18.5	22.4	35.3	43.1
Other Cost and Expense, Operating	14.8	7.8	23.6	15.1
Selling, General and Administrative Expense	40.9	44.6	79.7	90.3
Operating Expenses	273.9	276.7	498.4	516.1
Gain (Loss) on Sale of Assets and Asset Impairment Charges	36.9	8.7	60.1	54.0
Interest Income (Expense), Net	(36.5)	(38.5)	(73.7)	(79.4)
Other Nonoperating Income (Expense)	(3.9)	(1.6)	(7.2)	(5.6)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	81.5	57.2	174.1	137.9
Income Tax Expense (Benefit)	(26.7)	(20.8)	(57.5)	(47.8)
Income (Loss) from Equity Method Investments	6.4	9.0	13.9	17.5
Net income	61.2	45.4	130.5	107.6
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	(20.7)	11.5	5.2	(36.5)
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	0.2	(0.1)	0.3	(0.1)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(4.8)	0.1	(7.3)	(2.5)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	1.3	2.1	2.7	4.2
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(24.0)	13.6	0.9	(34.9)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 37.2	$ 59.0	$ 131.4	$ 72.7
Earnings Per Share, Basic	$ 1.51	$ 1.04	$ 3.18	$ 2.46
Weighted Average Number of Shares Outstanding, Basic	40.6	43.5	41.1	43.8
Earnings Per Share, Diluted	$ 1.49	$ 1.03	$ 3.15	$ 2.42
Weighted Average Number of Shares Outstanding, Diluted	41.1	44.2	41.5	44.5
Common Stock, Dividends, Per Share, Declared	$ 0.40	$ 0.38	$ 0.80	$ 0.76