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LOANS AND LEASES - Commercial Loans and Leases by Credit Quality (Detail) - USD ($) $ in Millions | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | $ 22,543 | $ 22,153
Commercial Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 8,832 | 8,786
Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 5,028 | 4,556
Commercial Leases [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 385 | 373
Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 37 | 46
Total Commercial Loans and Leases [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 14,282 | 13,761
Originated Loans and Leases [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 19,050 | 18,062
Originated Loans and Leases [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 6,601 | 6,171
Originated Loans and Leases [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 4,708 | 4,140
Originated Loans and Leases [Member] | Commercial Leases [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 385 | 373
Originated Loans and Leases [Member] | Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 37 | 46
Originated Loans and Leases [Member] | Total Commercial Loans and Leases [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 11,731 | 10,730
Acquired Loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 3,493 | 4,091
Acquired Loans [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 2,231 | 2,615
Acquired Loans [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 320 | 416
Acquired Loans [Member] | Total Commercial Loans and Leases [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 2,551 | 3,031
Pass [Member] | Originated Loans and Leases [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 6,309 | 5,883
Pass [Member] | Originated Loans and Leases [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 4,419 | 3,879
Pass [Member] | Originated Loans and Leases [Member] | Commercial Leases [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 375 | 366
Pass [Member] | Originated Loans and Leases [Member] | Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 36 | 45
Pass [Member] | Originated Loans and Leases [Member] | Total Commercial Loans and Leases [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 11,139 | 10,173
Pass [Member] | Acquired Loans [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 1,926 | 2,256
Pass [Member] | Acquired Loans [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 274 | 355
Pass [Member] | Acquired Loans [Member] | Total Commercial Loans and Leases [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 2,200 | 2,611
Special Mention [Member] | Originated Loans and Leases [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 146 | 163
Special Mention [Member] | Originated Loans and Leases [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 162 | 180
Special Mention [Member] | Originated Loans and Leases [Member] | Commercial Leases [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 4 | 1
Special Mention [Member] | Originated Loans and Leases [Member] | Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 0 | 0
Special Mention [Member] | Originated Loans and Leases [Member] | Total Commercial Loans and Leases [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 312 | 344
Special Mention [Member] | Acquired Loans [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 147 | 168
Special Mention [Member] | Acquired Loans [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 17 | 18
Special Mention [Member] | Acquired Loans [Member] | Total Commercial Loans and Leases [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 164 | 186
Substandard [Member] | Originated Loans and Leases [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 145 | 125
Substandard [Member] | Originated Loans and Leases [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 126 | 81
Substandard [Member] | Originated Loans and Leases [Member] | Commercial Leases [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 6 | 6
Substandard [Member] | Originated Loans and Leases [Member] | Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 1 | 1
Substandard [Member] | Originated Loans and Leases [Member] | Total Commercial Loans and Leases [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 278 | 213
Substandard [Member] | Acquired Loans [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 158 | 191
Substandard [Member] | Acquired Loans [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 29 | 43
Substandard [Member] | Acquired Loans [Member] | Total Commercial Loans and Leases [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 187 | 234
Doubtful [Member] | Originated Loans and Leases [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 1 | 0
Doubtful [Member] | Originated Loans and Leases [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 1 | 0
Doubtful [Member] | Originated Loans and Leases [Member] | Commercial Leases [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 0 | 0
Doubtful [Member] | Originated Loans and Leases [Member] | Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 0 | 0
Doubtful [Member] | Originated Loans and Leases [Member] | Total Commercial Loans and Leases [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 2 | 0
Doubtful [Member] | Acquired Loans [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 0 | 0
Doubtful [Member] | Acquired Loans [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | 0 | 0
Doubtful [Member] | Acquired Loans [Member] | Total Commercial Loans and Leases [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total commercial loans and leases | $ 0 | $ 0

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- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5074-111524 + Details
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