Reserve for loans impairments recorded after acquisition as a result of current information and events which result in it being probable that estimated cash flows will be less than previously expected or because actual cash flows are less than cash flows previously expected. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that was acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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Recorded investment in financing receivables that are 90 days or more past due and still accruing.

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Financing receivables that are equal to or greater than 90 days past due.

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Reflects the unfunded portion of contractual agreements to lend funds to borrowers for loans whose terms have been modified by troubled debt restructuring.

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-Name Statement of Financial Accounting Standard (FAS)
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Reflects the net carrying amount of loans and leases held in portfolio, not otherwise defined in the taxonomy, after deducting deferred income, but before deducting the allowance for losses on such loans and leases.

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Allowances related to the adoption of new consolidation accounting guidance.

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Loans and Allowance for Credit Losses Textuals (Details) (USD $)	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Jun. 30, 2010	Dec. 31, 2009	Dec. 31, 2008
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]
Allowance for loan losses and credit losses	$ 273,000,000	$ 257,000,000	$ 298,000,000	$ 225,000,000	$ 333,000,000	$ 0
90 days past due but still accruing	17,318,000,000		18,488,000,000
Financing Receivable, Recorded Investment, Nonaccrual Status	23,045,000,000		26,242,000,000
Total unfunded loan commitments on troubled debt restructurings	1,500,000,000		1,200,000,000
Allowances Related to Adoption of Consolidation Accounting Guidance				693,000,000
Total Consumer [Member]
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	11,600,000,000		13,000,000,000
Financing Receivable, Recorded Investment, Nonaccrual Status	13,780,000,000		14,891,000,000
Commercial Real Estate Mortgage and Construction Loans [Member] \| Criticized [Member]
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]
Loans, excluding Purchased Credit Impaired Loans	33,100,000,000
Financing Receivable, Recorded Investment, Nonaccrual Status	6,700,000,000
Commercial Real Estate Other Receivable [Member]
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]
Financing Receivable, Recorded Investment, Nonaccrual Status	4,691,000,000		5,227,000,000
Total unfunded loan commitments on troubled debt restructurings	1,100,000,000		861,000,000
Mortgages held for sale [Member]
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]
Financing Receivable, Recorded Investment, Nonaccrual Status	304,000,000		426,000,000
Loans held for sale [Member]
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]
Financing Receivable, Recorded Investment, Nonaccrual Status	52,000,000		3,000,000
Securities Based Margin Loans [Member]
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]
No FICO available	5,200,000,000		4,100,000,000
Student Loans under FFELP [Member]
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]
90 days past due but still accruing	1,014,000,000		1,106,000,000
Other revolving credit and installment [Member]
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]
Financing Receivable, Recorded Investment, Nonaccrual Status	255,000,000		300,000,000
Real estate 1-4 family first mortgage [Member]
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]
Loans, excluding Purchased Credit Impaired Loans	191,426,000,000		196,990,000,000
Financing Receivable, Recorded Investment, Nonaccrual Status	11,427,000,000		12,289,000,000
180+ DPD	$ 6,638,000,000		$ 7,214,000,000