GUARANTEES AND COMMITMENTS (Details) (USD $)	6 Months Ended
	Jun. 30, 2013	Jun. 28, 2013	Dec. 31, 2012
Maximum potential amount of future payments
Expire Within One Year	$ 184,400,000,000		$ 191,500,000,000
Expire After One Year	165,300,000,000		160,700,000,000
Total amount outstanding	349,700,000,000		352,200,000,000
Carrying value	1,210,100,000		3,210,100,000
Allowance for credit losses relating to letters of credit and unfunded lending commitments	1,100,000,000		1,100,000,000
Cash collateral available to reimburse losses realized under guarantees and indemnifications	46,000,000,000		39,000,000,000
Securities and other marketable assets held as collateral, the majority of which collateral is held to reimburse losses realized under securities lending indemnifications	36,000,000,000		51,000,000,000
Letters of credit in favor of the Company held as collateral	4,700,000,000		3,400,000,000
Number of trusts funded by the reinsurer	2
Fair value of securities in trusts funded by reinsurer relating to indemnification	5,200,000,000		4,900,000,000
Compensation for standard representations and warranties	0
Stated or notional amounts included in the indemnification clauses	0
Liability related to VTNs	0
Liability related to long-term care insurance indemnification	0
Investment grade
Maximum potential amount of future payments
Total amount outstanding	114,200,000,000		118,300,000,000
Non-investment grade
Maximum potential amount of future payments
Total amount outstanding	20,400,000,000		14,100,000,000
Not rated
Maximum potential amount of future payments
Total amount outstanding	215,100,000,000		219,800,000,000
Financial standby letters of credit
Maximum potential amount of future payments
Expire Within One Year	27,600,000,000		22,300,000,000
Expire After One Year	73,200,000,000		79,800,000,000
Total amount outstanding	100,800,000,000		102,100,000,000
Carrying value	361,600,000		432,800,000
Financial standby letters of credit | Investment grade
Maximum potential amount of future payments
Total amount outstanding	74,600,000,000		80,900,000,000
Financial standby letters of credit | Non-investment grade
Maximum potential amount of future payments
Total amount outstanding	16,900,000,000		11,000,000,000
Financial standby letters of credit | Not rated
Maximum potential amount of future payments
Total amount outstanding	9,300,000,000		10,200,000,000
Performance guarantees
Maximum potential amount of future payments
Expire Within One Year	7,700,000,000		7,300,000,000
Expire After One Year	4,300,000,000		4,700,000,000
Total amount outstanding	12,000,000,000		12,000,000,000
Carrying value	38,900,000		41,600,000
Performance guarantees | Investment grade
Maximum potential amount of future payments
Total amount outstanding	7,000,000,000		7,300,000,000
Performance guarantees | Non-investment grade
Maximum potential amount of future payments
Total amount outstanding	3,400,000,000		3,000,000,000
Performance guarantees | Not rated
Maximum potential amount of future payments
Total amount outstanding	1,600,000,000		1,700,000,000
Derivative instruments considered to be guarantees
Maximum potential amount of future payments
Expire Within One Year	4,800,000,000		11,200,000,000
Expire After One Year	54,800,000,000		45,500,000,000
Total amount outstanding	59,600,000,000		56,700,000,000
Carrying value	783,600,000		2,648,700,000
Derivative instruments considered to be guarantees | Not rated
Maximum potential amount of future payments
Total amount outstanding	59,600,000,000		56,700,000,000
Loans sold with recourse
Maximum potential amount of future payments
Expire After One Year	300,000,000		500,000,000
Total amount outstanding	300,000,000		500,000,000
Carrying value	26,000,000		87,000,000
Repurchase reserve for Consumer mortgages representations and warranties	719,000,000		1,565,000,000
Amount of residential first mortgage loans for which the entity reached an agreement with Fannie Mae to resolve potential future repurchase claims for breaches of representations and warranties		3,700,000
Amount paid under the agreement	968,000,000
Loans sold with recourse | Maximum
Maximum potential amount of future payments
Reasonably possible loss from whole loan sale representation and warranty claims in excess of amounts accrued due to modifying the key assumptions	200,000,000
Loans sold with recourse | Not rated
Maximum potential amount of future payments
Total amount outstanding	300,000,000		500,000,000
Securities lending indemnifications
Maximum potential amount of future payments
Expire Within One Year	71,500,000,000		80,400,000,000
Total amount outstanding	71,500,000,000		80,400,000,000
Securities lending indemnifications | Not rated
Maximum potential amount of future payments
Total amount outstanding	71,500,000,000		80,400,000,000
Credit card merchant processing
Maximum potential amount of future payments
Expire Within One Year	72,800,000,000		70,300,000,000
Total amount outstanding	72,800,000,000		70,300,000,000
Maximum potential contingent liability related to bankcard and private-label merchant processing services	73,000,000,000		70,000,000,000
Credit card merchant processing | Not rated
Maximum potential amount of future payments
Total amount outstanding	72,800,000,000		70,300,000,000
Custody indemnifications and other
Maximum potential amount of future payments
Expire After One Year	32,700,000,000		30,200,000,000
Total amount outstanding	32,700,000,000		30,200,000,000
Custody indemnifications and other | Investment grade
Maximum potential amount of future payments
Total amount outstanding	32,600,000,000		30,100,000,000
Custody indemnifications and other | Non-investment grade
Maximum potential amount of future payments
Total amount outstanding	$ 100,000,000		$ 100,000,000