Financing Receivables and Allowance for Losses on Financing Receivables (Maturities) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014
Total Loans [Member]
Contractual Obligation, Fiscal Year Maturity [Abstract]
2015	$ 52,175
2016	18,663
2017	19,712
2018	14,034
2019	13,097
2020 and later	35,069
Total	152,750
Consumer revolving loans	64,864
Total Contractual Maturities	217,614
Net Rentals Receivable [Member]
Contractual Obligation, Fiscal Year Maturity [Abstract]
2015	8,012
2016	5,440
2017	3,752
2018	2,564
2019	1,513
2020 and later	2,608
Total	23,889
Consumer revolving loans	0
Total Contractual Maturities	$ 23,889