INTEREST REVENUE AND EXPENSE (Details) (USD $) In Millions	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Interest revenue
Loan interest, including fees	$ 12,771	$ 14,227	$ 25,057	$ 28,900
Deposits with banks	460	291	919	581
Federal funds sold and securities purchased under agreements to resell	903	781	1,741	1,533
Investments, including dividends	2,126	2,924	4,537	5,964
Trading account assets	2,210	2,011	4,220	3,883
Other interest	176	122	267	278
Total interest revenue	18,586	20,356	36,741	41,139
Interest expense
Deposits	2,230	2,036	4,244	4,116
Federal funds purchased and securities loaned or sold under agreements to repurchase	933	797	1,670	1,451
Trading account liabilities	168	106	252	169
Short-term borrowings	168	215	338	491
Long-term debt	2,939	3,275	5,987	6,544
Total interest expense	6,438	6,429	12,491	12,771
Net interest revenue	12,148	13,927	24,250	28,368
Provision for loan losses	3,181	6,523	6,080	14,889
Net interest revenue after provision for loan losses	8,967	7,404	18,170	13,479
Insurance fees and charges	$ 367	$ 242	$ 587	$ 465

The insurance fees and other charges paid for deposits.

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Interest and dividend income on all securities excluding trading securities.

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Represents the total of interest and dividend income, including any amortization and accretion (as applicable) of discounts and premiums, earned from (1) loans and leases whether held-for-sale or held-in-portfolio; (2) investment securities; (3) federal funds sold; (4) securities purchased under agreements to resell; (5) investments in banker's acceptances, commercial paper, or certificates of deposit; (6) dividend income; or (7) other investments not otherwise specified herein.

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Interest and dividend income on securities that are bought and held principally for the purpose of selling them in the near term ("trading securities") and on securities measured at fair value.

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The aggregate interest and fee income generated by: (1) loans the Entity has positive intent and ability to hold for the foreseeable future, or until maturity or payoff, including commercial and consumer loans, whether domestic or foreign, which may consist of: (a) industrial and agricultural; (b) real estate; and (c) real estate construction loans; (d) trade financing; (e) lease financing; (f) home equity lines-of-credit; (g) automobile and other vehicle loans; and (h) credit card and other revolving-type loans and (2) loans and leases held-for-sale which may include mortgage loans, direct financing, and sales-type leases.

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The cost of borrowed funds accounted for as interest that was charged against earnings during the period.

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Aggregate amount of interest expense on all deposits.

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The aggregate expense incurred on federal funds purchased and securities sold under agreements to repurchase. If amounts recognized as payables under repurchase agreements have been offset against amounts recognized as receivables under reverse repurchase agreements and reported as a net amount on the balance sheet, the income and expense from these agreements may be reported on a net basis.

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Aggregate amount of interest paid or due on all long-term debt.

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The aggregate interest expense incurred on short-term borrowings including commercial paper, Federal Home Loan Bank and Federal Reserve Bank advances and other short term borrowings.

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Interest expense incurred on short positions arising from sales of securities and other assets, which the entity does not own, to other parties. Trading liabilities includes the fair value of derivative contracts held for trading that are in loss positions.

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Interest income derived from funds deposited with both domestic and foreign financial institutions including funds in money market and other accounts.

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Net interest and dividend income or expense, including any amortization and accretion (as applicable) of discounts and premiums, including consideration of the provisions for loan, lease, credit, and other related losses, if any.

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The aggregate interest income earned from (1) the lending of excess federal funds to another commercial bank requiring such for its legal reserve requirements and (2) securities purchased under agreements to resell.

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Includes all other interest income, net of discount accretion and premium amortization, and dividend income. It may include dividend income from equity securities that do not have readily determinable fair values that are reportable in Other Assets, and interest income on interest-only strips receivable (not in the form of a security) that are included in Other Assets.

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Allowance expensed for the period based on estimated losses to be realized from loan transactions.

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