v2.4.0.6
Loans And The Allowance For Credit Losses (Schedule Of Aging Analysis Of Days Past Due (DPD) For Each Portfolio Class) (Detail) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Financing Receivable, Recorded Investment, Past Due [Line Items]    
30-59 DPD, Accrual Loans $ 455 $ 507
60-89 DPD, Accrual Loans 243 289
90+ DPD, Accrual Loans 403 447
Total 30+ DPD, Accrual Loans 1,101 1,243
Total Accrual 74,287 75,222
Non-accrual 1,915 2,372
Loans, net of unearned income 76,202 77,594
Commercial And Industrial [Member]
    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
30-59 DPD, Accrual Loans 39 38
60-89 DPD, Accrual Loans 25 23
90+ DPD, Accrual Loans 5 28
Total 30+ DPD, Accrual Loans 69 89
Total Accrual 25,624 24,065
Non-accrual 366 457
Loans, net of unearned income 25,990 24,522
Commercial Real Estate Mortgage - Owner Occupied [Member]
    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
30-59 DPD, Accrual Loans 60 47
60-89 DPD, Accrual Loans 30 23
90+ DPD, Accrual Loans 9 9
Total 30+ DPD, Accrual Loans 99 79
Total Accrual 10,122 10,576
Non-accrual 504 590
Loans, net of unearned income 10,626 11,166
Commercial Real Estate Construction - Owner Occupied [Member]
    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
30-59 DPD, Accrual Loans 1 3
60-89 DPD, Accrual Loans 1 1
Total 30+ DPD, Accrual Loans 2 4
Total Accrual 241 312
Non-accrual 20 25
Loans, net of unearned income 261 337
Total Commercial [Member]
    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
30-59 DPD, Accrual Loans 100 88
60-89 DPD, Accrual Loans 56 47
90+ DPD, Accrual Loans 14 37
Total 30+ DPD, Accrual Loans 170 172
Total Accrual 35,987 34,953
Non-accrual 890 1,072
Loans, net of unearned income 36,877 36,025
Commercial Investor Real Estate Mortgage [Member]
    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
30-59 DPD, Accrual Loans 70 34
60-89 DPD, Accrual Loans 33 42
90+ DPD, Accrual Loans 16 13
Total 30+ DPD, Accrual Loans 119 89
Total Accrual 7,999 8,968
Non-accrual 599 734
Loans, net of unearned income 8,598 9,702
Commercial Investor Real Estate Construction [Member]
    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
30-59 DPD, Accrual Loans 2 23
60-89 DPD, Accrual Loans 1 5
Total 30+ DPD, Accrual Loans 3 28
Total Accrual 775 845
Non-accrual 74 180
Loans, net of unearned income 849 1,025
Total Investor Real Estate [Member]
    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
30-59 DPD, Accrual Loans 72 57
60-89 DPD, Accrual Loans 34 47
90+ DPD, Accrual Loans 16 13
Total 30+ DPD, Accrual Loans 122 117
Total Accrual 8,774 9,813
Non-accrual 673 914
Loans, net of unearned income 9,447 10,727
Residential First Mortgage [Member]
    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
30-59 DPD, Accrual Loans 138 187
60-89 DPD, Accrual Loans 83 100
90+ DPD, Accrual Loans 281 284
Total 30+ DPD, Accrual Loans 502 571
Total Accrual 13,165 13,534
Non-accrual 229 250
Loans, net of unearned income 13,394 13,784
Home Equity [Member]
    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
30-59 DPD, Accrual Loans 99 121
60-89 DPD, Accrual Loans 54 77
90+ DPD, Accrual Loans 74 93
Total 30+ DPD, Accrual Loans 227 291
Total Accrual 12,198 12,885
Non-accrual 123 136
Loans, net of unearned income 12,321 13,021
Indirect [Member]
    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
30-59 DPD, Accrual Loans 22 26
60-89 DPD, Accrual Loans 5 7
90+ DPD, Accrual Loans 2 2
Total 30+ DPD, Accrual Loans 29 35
Total Accrual 2,060 1,848
Loans, net of unearned income 2,060 1,848
Consumer Credit Card [Member]
    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
30-59 DPD, Accrual Loans 7 8
60-89 DPD, Accrual Loans 5 5
90+ DPD, Accrual Loans 13 14
Total 30+ DPD, Accrual Loans 25 27
Total Accrual 922 987
Loans, net of unearned income 922 987
Other Consumer [Member]
    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
30-59 DPD, Accrual Loans 17 20
60-89 DPD, Accrual Loans 6 6
90+ DPD, Accrual Loans 3 4
Total 30+ DPD, Accrual Loans 26 30
Total Accrual 1,181 1,202
Loans, net of unearned income 1,181 1,202
Total Consumer [Member]
    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
30-59 DPD, Accrual Loans 283 362
60-89 DPD, Accrual Loans 153 195
90+ DPD, Accrual Loans 373 397
Total 30+ DPD, Accrual Loans 809 954
Total Accrual 29,526 30,456
Non-accrual 352 386
Loans, net of unearned income $ 29,878 $ 30,842