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Investment In Operating Leases, Net (Investments In Operating Leases) (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Leases, Operating [Abstract]    
Property Subject to or Available for Operating Lease, Gross $ 22,842us-gaap_PropertySubjectToOrAvailableForOperatingLeaseGross $ 23,144us-gaap_PropertySubjectToOrAvailableForOperatingLeaseGross
Property Subject to or Available for Operating Lease, Accumulated Depreciation (3,821)us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAccumulatedDepreciation (3,634)us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAccumulatedDepreciation
Property Subject to or Available for Operating Lease, Net $ 19,021us-gaap_PropertySubjectToOrAvailableForOperatingLeaseNet $ 19,510us-gaap_PropertySubjectToOrAvailableForOperatingLeaseNet