Financing Receivables: (Details 3) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Financing Receivables on Non-accrual Status
Total Receivables	$ 117	$ 165
Lease receivables
Financing Receivables on Non-accrual Status
Total Receivables	40	66
Lease receivables | Major Markets
Financing Receivables on Non-accrual Status
Total Receivables	24	46
Lease receivables | Growth Markets
Financing Receivables on Non-accrual Status
Total Receivables	15	20
Client loan receivables
Financing Receivables on Non-accrual Status
Total Receivables	78	99
Client loan receivables | Major Markets
Financing Receivables on Non-accrual Status
Total Receivables	55	75
Client loan receivables | Growth Markets
Financing Receivables on Non-accrual Status
Total Receivables	$ 23	$ 24