XML 67 R56.htm IDEA: XBRL DOCUMENT v3.10.0.1
Loans and Allowance for Loan Losses - Information about Impaired Loans by Class (Details) - USD ($)
$ in Millions
Jun. 30, 2018
Dec. 31, 2017
Loan impairment    
Recorded investment with an allowance $ 543 $ 567
Recorded investment without an allowance 234 298
Impaired loans 777 865
Allowance for impaired loans 77 73
Unpaid principal balance with an allowance 616 645
Unpaid principal balance without an allowance 272 326
Commercial    
Loan impairment    
Recorded investment with an allowance 314 320
Recorded investment without an allowance 166 224
Impaired loans 480 544
Allowance for impaired loans 64 58
Unpaid principal balance with an allowance 372 381
Unpaid principal balance without an allowance 186 233
Commercial | Commercial and industrial    
Loan impairment    
Impaired loans 322 380
Commercial | Commercial mortgage    
Loan impairment    
Impaired loans 80 36
Commercial | Construction    
Loan impairment    
Recorded investment with an allowance 0 0
Impaired loans 78 128
Allowance for impaired loans 0 0
Unpaid principal balance with an allowance 0 0
Consumer    
Loan impairment    
Recorded investment with an allowance 229 247
Recorded investment without an allowance 68 74
Impaired loans 297 321
Allowance for impaired loans 13 15
Unpaid principal balance with an allowance 244 264
Unpaid principal balance without an allowance 86 93
Consumer | Residential mortgage    
Loan impairment    
Impaired loans 260 277
Consumer | Home equity and other consumer loans    
Loan impairment    
Impaired loans 37 44
Home equity and other consumer loans | Consumer Loans    
Loan impairment    
Recorded investment with an allowance 24 29
Recorded investment without an allowance 13 15
Allowance for impaired loans 0 0
Unpaid principal balance with an allowance 25 30
Unpaid principal balance without an allowance 22 24
Commercial mortgage | Commercial Loans Portfolio Segment [Member]    
Loan impairment    
Recorded investment with an allowance 26 33
Recorded investment without an allowance 54 3
Allowance for impaired loans 0 1
Unpaid principal balance with an allowance 26 33
Unpaid principal balance without an allowance 54 3
Commercial and industrial | Commercial Loans Portfolio Segment [Member]    
Loan impairment    
Recorded investment with an allowance 288 287
Recorded investment without an allowance 34 93
Allowance for impaired loans 64 57
Unpaid principal balance with an allowance 346 348
Unpaid principal balance without an allowance 54 102
Construction loans portfolio [Member] | Construction    
Loan impairment    
Recorded investment without an allowance 78 128
Unpaid principal balance without an allowance 78 128
Residential mortgage | Consumer Loans    
Loan impairment    
Recorded investment with an allowance 205 218
Recorded investment without an allowance 55 59
Allowance for impaired loans 13 15
Unpaid principal balance with an allowance 219 234
Unpaid principal balance without an allowance $ 64 $ 69