Investments in Affiliated Companies (Future Lease Receipts) (Details 8) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Schedule of Equity Method Investments [Line Items]
2013	$ 877.0	[1]
2014	702.5	[1]
2015	536.9	[1]
2016	400.1	[1]
2017	299.3	[1]
Years thereafter	659.0	[1]
Total future receipts from leases	3,474.8	[1]
RRPF Joint Ventures [Member]
Schedule of Equity Method Investments [Line Items]
2013	266.4
2014	246.2
2015	223.4
2016	195.7
2017	176.8
Years thereafter	434.8
Total future receipts from leases	1,543.3
RRPF Joint Ventures [Member] | Rolls-Royce [Member]
Schedule of Equity Method Investments [Line Items]
2013	119.6
2014	117.8
2015	104.2
2016	84.5
2017	76.9
Years thereafter	201.9
Total future receipts from leases	704.9
RRPF Joint Ventures [Member] | Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
2013	146.8
2014	128.4
2015	119.2
2016	111.2
2017	99.9
Years thereafter	232.9
Total future receipts from leases	$ 838.4

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