Financing Receivables (Details 5) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Gross recorded investment for each class of receivables, by credit quality indicator
Total	$ 19,393	$ 19,625
Lease receivables
Gross recorded investment for each class of receivables, by credit quality indicator
Total	8,586	8,545
Lease receivables | Major Markets
Gross recorded investment for each class of receivables, by credit quality indicator
Total	6,543	6,562
Lease receivables | Major Markets | Aaa - Aa3
Gross recorded investment for each class of receivables, by credit quality indicator
Total	910	794
Lease receivables | Major Markets | A1 - A3
Gross recorded investment for each class of receivables, by credit quality indicator
Total	1,306	1,463
Lease receivables | Major Markets | Baa1 - Baa3
Gross recorded investment for each class of receivables, by credit quality indicator
Total	2,413	2,494
Lease receivables | Major Markets | Ba1 - Ba2
Gross recorded investment for each class of receivables, by credit quality indicator
Total	979	899
Lease receivables | Major Markets | Ba3 - B1
Gross recorded investment for each class of receivables, by credit quality indicator
Total	557	518
Lease receivables | Major Markets | B2 - B3
Gross recorded investment for each class of receivables, by credit quality indicator
Total	247	230
Lease receivables | Major Markets | Caa - D
Gross recorded investment for each class of receivables, by credit quality indicator
Total	131	164
Lease receivables | Growth Markets
Gross recorded investment for each class of receivables, by credit quality indicator
Total	2,043	1,983
Lease receivables | Growth Markets | Aaa - Aa3
Gross recorded investment for each class of receivables, by credit quality indicator
Total	153	173
Lease receivables | Growth Markets | A1 - A3
Gross recorded investment for each class of receivables, by credit quality indicator
Total	198	182
Lease receivables | Growth Markets | Baa1 - Baa3
Gross recorded investment for each class of receivables, by credit quality indicator
Total	866	837
Lease receivables | Growth Markets | Ba1 - Ba2
Gross recorded investment for each class of receivables, by credit quality indicator
Total	446	403
Lease receivables | Growth Markets | Ba3 - B1
Gross recorded investment for each class of receivables, by credit quality indicator
Total	259	242
Lease receivables | Growth Markets | B2 - B3
Gross recorded investment for each class of receivables, by credit quality indicator
Total	98	93
Lease receivables | Growth Markets | Caa - D
Gross recorded investment for each class of receivables, by credit quality indicator
Total	23	54
Client loan receivables
Gross recorded investment for each class of receivables, by credit quality indicator
Total	10,807	11,080
Client loan receivables | Major Markets
Gross recorded investment for each class of receivables, by credit quality indicator
Total	8,717	9,087
Client loan receivables | Major Markets | Aaa - Aa3
Gross recorded investment for each class of receivables, by credit quality indicator
Total	1,213	1,100
Client loan receivables | Major Markets | A1 - A3
Gross recorded investment for each class of receivables, by credit quality indicator
Total	1,740	2,026
Client loan receivables | Major Markets | Baa1 - Baa3
Gross recorded investment for each class of receivables, by credit quality indicator
Total	3,215	3,453
Client loan receivables | Major Markets | Ba1 - Ba2
Gross recorded investment for each class of receivables, by credit quality indicator
Total	1,305	1,245
Client loan receivables | Major Markets | Ba3 - B1
Gross recorded investment for each class of receivables, by credit quality indicator
Total	742	718
Client loan receivables | Major Markets | B2 - B3
Gross recorded investment for each class of receivables, by credit quality indicator
Total	329	318
Client loan receivables | Major Markets | Caa - D
Gross recorded investment for each class of receivables, by credit quality indicator
Total	174	227
Client loan receivables | Growth Markets
Gross recorded investment for each class of receivables, by credit quality indicator
Total	2,090	1,993
Client loan receivables | Growth Markets | Aaa - Aa3
Gross recorded investment for each class of receivables, by credit quality indicator
Total	157	173
Client loan receivables | Growth Markets | A1 - A3
Gross recorded investment for each class of receivables, by credit quality indicator
Total	202	183
Client loan receivables | Growth Markets | Baa1 - Baa3
Gross recorded investment for each class of receivables, by credit quality indicator
Total	886	841
Client loan receivables | Growth Markets | Ba1 - Ba2
Gross recorded investment for each class of receivables, by credit quality indicator
Total	456	405
Client loan receivables | Growth Markets | Ba3 - B1
Gross recorded investment for each class of receivables, by credit quality indicator
Total	265	243
Client loan receivables | Growth Markets | B2 - B3
Gross recorded investment for each class of receivables, by credit quality indicator
Total	100	94
Client loan receivables | Growth Markets | Caa - D
Gross recorded investment for each class of receivables, by credit quality indicator
Total	23	54
Major Markets
Gross recorded investment for each class of receivables, by credit quality indicator
Total	15,260	15,650
Growth Markets
Gross recorded investment for each class of receivables, by credit quality indicator
Total	$ 4,133	$ 3,975