Leases (Details 1) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Minimum Future Receipts
2013, Finance Leases	$ 33.0
2014, Finance Leases	31.7
2015, Finance Leases	28.6
2016, Finance Leases	27.1
2017, Finance Leases	25.7
Years thereafter, Finance Leases	124.1
Total, Finance Leases	270.2
2013, Operating Leases	877.0	[1]
2014, Operating Leases	702.5	[1]
2015, Operating Leases	536.9	[1]
2016, Operating Leases	400.1	[1]
2017, Operating Leases	299.3	[1]
Years thereafter, Operating Leases	659.0	[1]
Total future receipts from leases	3,474.8	[1]
2013, Total	910.0
2014, Total	734.2
2015, Total	565.5
2016, Total	427.2
2017, Total	325.0
Years thereafter, Total	783.1
Total	$ 3,745.0

[1] (1) The future contractual receipts due under our full-service operating leases include executory costs such as maintenance, car taxes, and insurance.