FAIR VALUE ELECTIONS (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended				9 Months Ended												9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Consolidated VIEs	Dec. 31, 2013 Consolidated VIEs	Sep. 30, 2014 Certain loans and other credit product	Sep. 30, 2013 Certain loans and other credit product	Sep. 30, 2014 Certain loans and other credit product Trading assets	Dec. 31, 2013 Certain loans and other credit product Trading assets	Sep. 30, 2014 Certain loans and other credit product Loans	Dec. 31, 2013 Certain loans and other credit product Loans	Sep. 30, 2014 Certain Investments in Unallocated Precious Metals Forward derivative contract Purchased	Sep. 30, 2014 Certain Investments in Unallocated Precious Metals Forward derivative contract Sold	Sep. 30, 2014 Certain debt host contracts across unallocated precious metals accounts	Dec. 31, 2013 Certain debt host contracts across unallocated precious metals accounts	Sep. 30, 2014 Mortgage loans	Dec. 31, 2013 Mortgage loans	Sep. 30, 2014 Mortgage loans Consolidated VIEs	Sep. 30, 2013 Mortgage loans Consolidated VIEs	Sep. 30, 2014 Corporate loans Consolidated VIEs	Dec. 31, 2013 Corporate loans Consolidated VIEs	Dec. 31, 2013 Consumer loans Consolidated VIEs	Sep. 30, 2014 Fair value Certain loans and other credit product	Dec. 31, 2013 Fair value Certain loans and other credit product	Sep. 30, 2014 Carrying amount Certain loans and other credit product Trading assets	Dec. 31, 2013 Carrying amount Certain loans and other credit product Trading assets	Sep. 30, 2014 Carrying amount Certain loans and other credit product Loans	Dec. 31, 2013 Carrying amount Certain loans and other credit product Loans	Sep. 30, 2014 Carrying amount Certain mortgage loans (HFS)	Dec. 31, 2013 Carrying amount Certain mortgage loans (HFS)	Sep. 30, 2014 Carrying amount Corporate loans Consolidated VIEs	Dec. 31, 2013 Carrying amount Corporate loans Consolidated VIEs	Dec. 31, 2013 Carrying amount Consumer loans Consolidated VIEs
Fair Value Option Quantitative Disclosures
Gain (loss) on change in estimated fair value of debt liabilities due to change in company's own credit risk	$ 112	$ (241)	$ 102	$ (249)
Total assets															1,500	1,300										11,071	9,262	4,409	4,105	1,640	2,089	2	14	910
Aggregate unpaid principal balance in excess of (less than) fair value									113	4	12	(79)					62	48			10	7	212
Balance of non-accrual loans or loans more than 90 days past due									8	97	4	5											81
Aggregate unpaid principal balance in excess of fair value for non-accrual loans or loans more than 90 days past due									(2)	41	3	5											106
Unfunded lending commitments																								2,300	2,308
Changes in fair value due to instrument-specific credit risk gain (loss)							(77)	5											(48)	(115)
Derivative notionals													9,600	6,600
Aggregate unpaid principal balance in excess of (less than) fair value					$ 9	$ 223