Financing Receivables: (Details 3) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Financing Receivables on Non-accrual Status
Total Receivables	$ 242	$ 191
Lease receivables
Financing Receivables on Non-accrual Status
Total Receivables	85	59
Lease receivables | Major Markets
Financing Receivables on Non-accrual Status
Total Receivables	24	25
Lease receivables | Growth Markets
Financing Receivables on Non-accrual Status
Total Receivables	62	34
Loan receivables
Financing Receivables on Non-accrual Status
Total Receivables	157	132
Loan receivables | Major Markets
Financing Receivables on Non-accrual Status
Total Receivables	41	40
Loan receivables | Growth Markets
Financing Receivables on Non-accrual Status
Total Receivables	$ 116	$ 92