Financing Receivables: (Details 2) (USD $) In Millions, unless otherwise specified	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Major Markets	Dec. 31, 2013 Major Markets	Jun. 30, 2014 Growth Markets	Dec. 31, 2013 Growth Markets	Jun. 30, 2014 Lease receivables	Dec. 31, 2013 Lease receivables	Dec. 31, 2012 Lease receivables	Jun. 30, 2014 Lease receivables Major Markets	Dec. 31, 2013 Lease receivables Major Markets	Dec. 31, 2012 Lease receivables Major Markets	Jun. 30, 2014 Lease receivables Growth Markets	Dec. 31, 2013 Lease receivables Growth Markets	Dec. 31, 2012 Lease receivables Growth Markets	Jun. 30, 2014 Loan receivables	Dec. 31, 2013 Loan receivables	Dec. 31, 2012 Loan receivables	Jun. 30, 2014 Loan receivables Major Markets	Dec. 31, 2013 Loan receivables Major Markets	Dec. 31, 2012 Loan receivables Major Markets	Jun. 30, 2014 Loan receivables Growth Markets	Dec. 31, 2013 Loan receivables Growth Markets	Dec. 31, 2012 Loan receivables Growth Markets
Financing Receivables
Ending Balance	$ 23,335	$ 23,537	$ 16,507	$ 17,325	$ 6,828	$ 6,212	$ 8,635	$ 8,996		$ 6,371	$ 6,796		$ 2,264	$ 2,200		$ 14,700	$ 14,542		$ 10,136	$ 10,529		$ 4,565	$ 4,012
Collectively evaluated for impairment	22,945	23,219	16,398	17,206	6,547	6,013
Individually evaluated for impairment	390	318	108	119	281	199
Allowance for Credit Losses
Allowance for credit losses, beginning balance	365	318	137	180	228	138	149	123	114	38	42	59	111	80	55	306	242	204	95	95	121	210	147	84
Write-offs	(13)	(33)	(10)	(23)	(3)	(10)
Provision	103	84	6	(21)	97	105
Other	0	(5)	0	1	0	(6)
Allowance for credit losses, ending balance	454	365	133	137	321	228	149	123	114	38	42	59	111	80	55	306	242	204	95	95	121	210	147	84
Collectively evaluated for impairment	92	93	44	45	48	48
Individually evaluated for impairment	$ 363	$ 272	$ 89	$ 93	$ 273	$ 179