Nonaccrual Loans (Details) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Nonaccrual Loans [Abstract]
Financing Receivable, Recorded Investment, Nonaccrual Status	$ 23,045	$ 26,242
Commercial and Industrial Loans [Member]
Nonaccrual Loans [Abstract]
Financing Receivable, Recorded Investment, Nonaccrual Status	2,393	3,213
Commercial Real Estate Mortgage [Member]
Nonaccrual Loans [Abstract]
Financing Receivable, Recorded Investment, Nonaccrual Status	4,691	5,227
Commercial Real Estate Construction [Member]
Nonaccrual Loans [Abstract]
Financing Receivable, Recorded Investment, Nonaccrual Status	2,043	2,676
Lease Financing [Member]
Nonaccrual Loans [Abstract]
Financing Receivable, Recorded Investment, Nonaccrual Status	79	108
Foreign Loans [Member]
Nonaccrual Loans [Abstract]
Financing Receivable, Recorded Investment, Nonaccrual Status	59	127
Total Commercial [Member]
Nonaccrual Loans [Abstract]
Financing Receivable, Recorded Investment, Nonaccrual Status	9,265	11,351
Other revolving credit and installment [Member]
Nonaccrual Loans [Abstract]
Financing Receivable, Recorded Investment, Nonaccrual Status	255	300
Real estate 1-4 family first mortgage [Member]
Nonaccrual Loans [Abstract]
Financing Receivable, Recorded Investment, Nonaccrual Status	11,427	12,289
Real estate 1-4 family junior lien mortgage [Member]
Nonaccrual Loans [Abstract]
Financing Receivable, Recorded Investment, Nonaccrual Status	2,098	2,302
Total Consumer [Member]
Nonaccrual Loans [Abstract]
Financing Receivable, Recorded Investment, Nonaccrual Status	$ 13,780	$ 14,891