Leases (Details 3) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Capital Leases
2013, Capital Leases	$ 3.1
2014, Capital Leases	3.1
2015, Capital Leases	2.7
2016, Capital Leases	1.1
2017, Capital Leases	0
Years thereafter, Capital Leases	0
Capital Leases, Future Minimum Payments Due, Total	10.0
Less: amounts representing interest	(1.1)
Present value of future minimum capital lease payments	8.9		11.3
Recourse Operating Leases [Member]
Operating Leases
2013, Operating Lease	142.9
2014, Operating Lease	131.3
2015, Operating Lease	108.0
2016, Operating Lease	95.7
2017, Operating Lease	87.1
Years thereafter, Operating Leases	400.2
Total, Operating Leases	965.2
Nonrecourse Operating Leases [Member]
Operating Leases
2013, Operating Lease	130.5	[1]
2014, Operating Lease	11.1	[1]
2015, Operating Lease	8.1	[1]
2016, Operating Lease	9.5	[1]
2017, Operating Lease	9.0	[1]
Years thereafter, Operating Leases	28.3	[1]
Total, Operating Leases	$ 196.5	[1]

[1] (2) The amounts shown are primarily the rental payments of two wholly owned, bankruptcy-remote special purpose corporations. We consolidate these rentals for accounting purposes, but they are not our legal obligations. 2014 payments include $119.0 million related to an option we exercised to purchase 3,275 railcars.