Financing Receivables (Details 7) (USD $) In Millions	Sep. 30, 2011	Dec. 31, 2010
Past Due Financing Receivable
Total Past Due (> 90 days)	$ 71	$ 65
Current	18,337	19,560
Total Financing Receivables	18,409	19,625
Recorded Investment > 90 Days and Accruing	49	31
Lease receivables
Past Due Financing Receivable
Total Past Due (> 90 days)	23	22
Current	8,202	8,523
Total Financing Receivables	8,225	8,545
Recorded Investment > 90 Days and Accruing	19	10
Lease receivables | Major Markets
Past Due Financing Receivable
Total Past Due (> 90 days)	10	10
Current	6,279	6,552
Total Financing Receivables	6,290	6,562
Recorded Investment > 90 Days and Accruing	10	5
Lease receivables | Growth Markets
Past Due Financing Receivable
Total Past Due (> 90 days)	13	13
Current	1,923	1,970
Total Financing Receivables	1,935	1,983
Recorded Investment > 90 Days and Accruing	10	5
Client loan receivables
Past Due Financing Receivable
Total Past Due (> 90 days)	48	43
Current	10,136	11,037
Total Financing Receivables	10,184	11,080
Recorded Investment > 90 Days and Accruing	30	21
Client loan receivables | Major Markets
Past Due Financing Receivable
Total Past Due (> 90 days)	28	11
Current	8,077	9,076
Total Financing Receivables	8,105	9,087
Recorded Investment > 90 Days and Accruing	11	4
Client loan receivables | Growth Markets
Past Due Financing Receivable
Total Past Due (> 90 days)	20	32
Current	2,059	1,961
Total Financing Receivables	2,079	1,993
Recorded Investment > 90 Days and Accruing	18	17
Major Markets
Past Due Financing Receivable
Total Financing Receivables	14,395	15,650
Growth Markets
Past Due Financing Receivable
Total Financing Receivables	$ 4,014	$ 3,975