Financing Receivables (Details 7) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Past Due Financing Receivable
Total Past Due (> 90 days)	$ 76	$ 82
Current	20,482	22,250
Total Financing Receivables	20,558	22,332
Recorded Investment > 90 Days and Accruing	40	47
Troubled debt restructurings of financing receivables	0	0
Major Markets
Past Due Financing Receivable
Total Financing Receivables	14,925	15,751
Growth Markets
Past Due Financing Receivable
Total Financing Receivables	5,633	6,581
Lease receivables
Past Due Financing Receivable
Total Past Due (> 90 days)	42	38
Current	7,247	7,607
Total Financing Receivables	7,288	7,645
Recorded Investment > 90 Days and Accruing	22	20
Lease receivables | Major Markets
Past Due Financing Receivable
Total Past Due (> 90 days)	6	6
Current	5,549	5,696
Total Financing Receivables	5,555	5,702
Recorded Investment > 90 Days and Accruing	6	6
Lease receivables | Growth Markets
Past Due Financing Receivable
Total Past Due (> 90 days)	35	32
Current	1,697	1,911
Total Financing Receivables	1,733	1,943
Recorded Investment > 90 Days and Accruing	16	14
Loan receivables
Past Due Financing Receivable
Total Past Due (> 90 days)	35	44
Current	13,235	14,643
Total Financing Receivables	13,270	14,687
Recorded Investment > 90 Days and Accruing	18	27
Loan receivables | Major Markets
Past Due Financing Receivable
Total Past Due (> 90 days)	9	9
Current	9,361	10,040
Total Financing Receivables	9,370	10,049
Recorded Investment > 90 Days and Accruing	8	9
Loan receivables | Growth Markets
Past Due Financing Receivable
Total Past Due (> 90 days)	26	35
Current	3,874	4,603
Total Financing Receivables	3,900	4,639
Recorded Investment > 90 Days and Accruing	$ 9	$ 18