Finance Assets, net (Schedule of Leveraged and Direct Finance Rents Receivable)) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Capital Leased Assets [Line Items]
Capital Leases, Future Minimum Payments Receivable, Next Twelve Months	$ 137
2015	229
2016	53
2017	81
2018	170
Thereafter	825
Total	1,495
Leveraged Leases [Member]
Capital Leased Assets [Line Items]
Capital Leases, Future Minimum Payments Receivable, Next Twelve Months	92
2015	229
2016	53
2017	81
2018	170
Thereafter	798
Total	1,423
Direct Finance Leases [Member]
Capital Leased Assets [Line Items]
Capital Leases, Future Minimum Payments Receivable, Next Twelve Months	45
2015	0
2016	0
2017	0
2018	0
Thereafter	27
Total	$ 72