Financing Receivables (Details 7) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Past Due Financing Receivable
Current	$ 19,014	$ 22,250
Total Financing Receivables	19,099	22,332
Recorded Investment > 90 Days and Accruing	53	47
Troubled debt restructurings of financing receivables	0	0
Total Past Due >90 days
Past Due Financing Receivable
Total Past Due	85	82
Major Markets
Past Due Financing Receivable
Total Financing Receivables	14,471	15,751
Growth Markets
Past Due Financing Receivable
Total Financing Receivables	4,627	6,581
Lease receivables
Past Due Financing Receivable
Current	6,845	7,607
Total Financing Receivables	6,885	7,645
Recorded Investment > 90 Days and Accruing	22	20
Lease receivables | Total Past Due >90 days
Past Due Financing Receivable
Total Past Due	39	38
Lease receivables | Major Markets
Past Due Financing Receivable
Current	5,397	5,696
Total Financing Receivables	5,404	5,702
Recorded Investment > 90 Days and Accruing	7	6
Lease receivables | Major Markets | Total Past Due >90 days
Past Due Financing Receivable
Total Past Due	7	6
Lease receivables | Growth Markets
Past Due Financing Receivable
Current	1,448	1,911
Total Financing Receivables	1,480	1,943
Recorded Investment > 90 Days and Accruing	15	14
Lease receivables | Growth Markets | Total Past Due >90 days
Past Due Financing Receivable
Total Past Due	32	32
Loan receivables
Past Due Financing Receivable
Current	12,169	14,643
Total Financing Receivables	12,214	14,687
Recorded Investment > 90 Days and Accruing	31	27
Loan receivables | Total Past Due >90 days
Past Due Financing Receivable
Total Past Due	45	44
Loan receivables | Major Markets
Past Due Financing Receivable
Current	9,057	10,040
Total Financing Receivables	9,067	10,049
Recorded Investment > 90 Days and Accruing	10	9
Loan receivables | Major Markets | Total Past Due >90 days
Past Due Financing Receivable
Total Past Due	10	9
Loan receivables | Growth Markets
Past Due Financing Receivable
Current	3,112	4,603
Total Financing Receivables	3,147	4,639
Recorded Investment > 90 Days and Accruing	21	18
Loan receivables | Growth Markets | Total Past Due >90 days
Past Due Financing Receivable
Total Past Due	$ 35	$ 35