XML 93 R74.htm IDEA: XBRL DOCUMENT v3.6.0.2
Loans - Consumer Banking: Risk Profile by Geographic Region, Delinquency Status and Performing Status (Detail) - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 245,586 $ 229,851 $ 208,316
Consumer Portfolio Segment [Member]      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 73,054 $ 70,372  
Percentage of portfolio 100.00% 100.00%  
Consumer Portfolio Segment [Member] | Auto      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 47,916 $ 41,549  
Consumer Portfolio Segment [Member] | Auto | Loans Receivable | Geographic Concentration Risk      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 47,916 $ 41,549  
Percentage of portfolio 65.60% 59.00%  
Consumer Portfolio Segment [Member] | Auto | Loans Receivable | Geographic Concentration Risk | Texas      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 6,304 $ 5,463  
Percentage of portfolio 8.60% 7.80%  
Consumer Portfolio Segment [Member] | Auto | Loans Receivable | Geographic Concentration Risk | California      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 5,448 $ 4,611  
Percentage of portfolio 7.50% 6.50%  
Consumer Portfolio Segment [Member] | Auto | Loans Receivable | Geographic Concentration Risk | Louisiana      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 2,159 $ 1,882  
Percentage of portfolio 3.00% 2.70%  
Consumer Portfolio Segment [Member] | Auto | Loans Receivable | Geographic Concentration Risk | Illinois      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 2,065 $ 1,859  
Percentage of portfolio 2.80% 2.60%  
Consumer Portfolio Segment [Member] | Auto | Loans Receivable | Geographic Concentration Risk | Florida      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 3,985 $ 3,315  
Percentage of portfolio 5.50% 4.70%  
Consumer Portfolio Segment [Member] | Auto | Loans Receivable | Geographic Concentration Risk | Georgia      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 2,506 $ 2,245  
Percentage of portfolio 3.40% 3.20%  
Consumer Portfolio Segment [Member] | Auto | Loans Receivable | Geographic Concentration Risk | Ohio      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 2,017 $ 1,738  
Percentage of portfolio 2.80% 2.50%  
Consumer Portfolio Segment [Member] | Auto | Loans Receivable | Geographic Concentration Risk | Other      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 23,432 $ 20,436  
Percentage of portfolio 32.00% 29.00%  
Consumer Portfolio Segment [Member] | Home loan      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 21,584 $ 25,227  
Consumer Portfolio Segment [Member] | Home loan | Loans Receivable | Geographic Concentration Risk      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 21,584 $ 25,227  
Percentage of portfolio 29.50% 35.90%  
Consumer Portfolio Segment [Member] | Home loan | Loans Receivable | Geographic Concentration Risk | California      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 4,993 $ 5,884  
Percentage of portfolio 6.80% 8.40%  
Consumer Portfolio Segment [Member] | Home loan | Loans Receivable | Geographic Concentration Risk | Louisiana      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 985 $ 1,146  
Percentage of portfolio 1.30% 1.60%  
Consumer Portfolio Segment [Member] | Home loan | Loans Receivable | Geographic Concentration Risk | New York      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 2,036 $ 2,171  
Percentage of portfolio 2.80% 3.10%  
Consumer Portfolio Segment [Member] | Home loan | Loans Receivable | Geographic Concentration Risk | Illinois      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 1,218 $ 1,490  
Percentage of portfolio 1.70% 2.10%  
Consumer Portfolio Segment [Member] | Home loan | Loans Receivable | Geographic Concentration Risk | Maryland      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 1,409 $ 1,539  
Percentage of portfolio 1.90% 2.20%  
Consumer Portfolio Segment [Member] | Home loan | Loans Receivable | Geographic Concentration Risk | New Jersey      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 1,112 $ 1,293  
Percentage of portfolio 1.50% 1.80%  
Consumer Portfolio Segment [Member] | Home loan | Loans Receivable | Geographic Concentration Risk | Virginia      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 1,204 $ 1,354  
Percentage of portfolio 1.70% 1.90%  
Consumer Portfolio Segment [Member] | Home loan | Loans Receivable | Geographic Concentration Risk | Other      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 8,627 $ 10,350  
Percentage of portfolio 11.80% 14.80%  
Consumer Portfolio Segment [Member] | Retail banking      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 3,554 $ 3,596  
Consumer Portfolio Segment [Member] | Retail banking | Loans Receivable | Geographic Concentration Risk      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 3,554 $ 3,596  
Percentage of portfolio 4.90% 5.10%  
Consumer Portfolio Segment [Member] | Retail banking | Loans Receivable | Geographic Concentration Risk | Texas      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 756 $ 757  
Percentage of portfolio 1.00% 1.10%  
Consumer Portfolio Segment [Member] | Retail banking | Loans Receivable | Geographic Concentration Risk | Louisiana      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 1,010 $ 1,071  
Percentage of portfolio 1.40% 1.50%  
Consumer Portfolio Segment [Member] | Retail banking | Loans Receivable | Geographic Concentration Risk | New York      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 941 $ 921  
Percentage of portfolio 1.30% 1.30%  
Consumer Portfolio Segment [Member] | Retail banking | Loans Receivable | Geographic Concentration Risk | Maryland      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 190 $ 180  
Percentage of portfolio 0.30% 0.30%  
Consumer Portfolio Segment [Member] | Retail banking | Loans Receivable | Geographic Concentration Risk | New Jersey      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 238 $ 259  
Percentage of portfolio 0.30% 0.40%  
Consumer Portfolio Segment [Member] | Retail banking | Loans Receivable | Geographic Concentration Risk | Virginia      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 156 $ 151  
Percentage of portfolio 0.20% 0.20%  
Consumer Portfolio Segment [Member] | Retail banking | Loans Receivable | Geographic Concentration Risk | Other      
Loans and Leases Receivable Disclosure [Line Items]      
Loans held for investment $ 263 $ 257  
Percentage of portfolio 0.40% 0.30%