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BUSINESS SEGMENTS - Financial Information for Segments (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018
Segment Reporting Information [Line Items] |  |  |  |  |
Interest income | $ 317 | $ 294 | $ 627 | $ 567 |
Interest expense | 87 | 54 | 166 | 101 |
Net Interest Income | 230 | 240 | 461 | 466 |
Provision for credit losses | 11 | 16 | 25 | 30 |
Non-interest income | 75 | 65 | 140 | 132 |
Non-interest expense | 172 | 179 | 334 | 346 |
Amortization of intangibles | 3 | 4 | 7 | 8 |
Income tax expense (benefit) | 24 | 21 | 46 | 42 |
Net income (loss) | 95 | 85 | 189 | 172 |
Total assets | 33,903 | 32,258 | 33,903 | 32,258 | $ 33,102
Total intangibles | 2,336 | 2,335 | 2,336 | 2,335 |
Operating Segments [Member] | Community Banking [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Interest income | 316 | 285 | 626 | 548 |
Interest expense | 81 | 50 | 157 | 92 |
Net Interest Income | 235 | 235 | 469 | 456 |
Provision for credit losses | 11 | 14 | 25 | 26 |
Non-interest income | 61 | 51 | 112 | 104 |
Non-interest expense | 157 | 159 | 304 | 308 |
Amortization of intangibles | 3 | 4 | 7 | 8 |
Income tax expense (benefit) | 24 | 21 | 47 | 43 |
Net income (loss) | 101 | 88 | 198 | 175 |
Total assets | 33,785 | 32,035 | 33,785 | 32,035 |
Total intangibles | 2,297 | 2,311 | 2,297 | 2,311 |
Operating Segments [Member] | Wealth Management [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Interest income | 0 | 0 | 0 | 0 |
Interest expense | 0 | 0 | 0 | 0 |
Net Interest Income | 0 | 0 | 0 | 0 |
Provision for credit losses | 0 | 0 | 0 | 0 |
Non-interest income | 12 | 11 | 23 | 22 |
Non-interest expense | 9 | 9 | 18 | 17 |
Amortization of intangibles | 0 | 0 | 0 | 0 |
Income tax expense (benefit) | 1 | 0 | 1 | 1 |
Net income (loss) | 2 | 2 | 4 | 4 |
Total assets | 27 | 25 | 27 | 25 |
Total intangibles | 10 | 10 | 10 | 10 |
Operating Segments [Member] | Insurance [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Interest income | 0 | 0 | 0 | 0 |
Interest expense | 0 | 0 | 0 | 0 |
Net Interest Income | 0 | 0 | 0 | 0 |
Provision for credit losses | 0 | 0 | 0 | 0 |
Non-interest income | 4 | 4 | 9 | 8 |
Non-interest expense | 4 | 4 | 8 | 8 |
Amortization of intangibles | 0 | 0 | 0 | 0 |
Income tax expense (benefit) | 0 | 0 | 0 | 0 |
Net income (loss) | 0 | 0 | 1 | 0 |
Total assets | 35 | 22 | 35 | 22 |
Total intangibles | 29 | 12 | 29 | 12 |
Operating Segments [Member] | Consumer Finance [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Interest income | 0 | 9 | 0 | 19 |
Interest expense | 0 | 1 | 0 | 2 |
Net Interest Income | 0 | 8 | 0 | 17 |
Provision for credit losses | 0 | 2 | 0 | 4 |
Non-interest income | 0 | 1 | 0 | 1 |
Non-interest expense | 0 | 5 | 0 | 10 |
Amortization of intangibles | 0 | 0 | 0 | 0 |
Income tax expense (benefit) | 0 | 1 | 0 | 1 |
Net income (loss) | 0 | 1 | 0 | 3 |
Total assets | 0 | 168 | 0 | 168 |
Total intangibles | 0 | 2 | 0 | 2 |
Parent and Other [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Interest income | 1 | 0 | 1 | 0 |
Interest expense | 6 | 3 | 9 | 7 |
Net Interest Income | (5) | (3) | (8) | (7) |
Provision for credit losses | 0 | 0 | 0 | 0 |
Non-interest income | (2) | (2) | (4) | (3) |
Non-interest expense | 2 | 2 | 4 | 3 |
Amortization of intangibles | 0 | 0 | 0 | 0 |
Income tax expense (benefit) | (1) | (1) | (2) | (3) |
Net income (loss) | (8) | (6) | (14) | (10) |
Total assets | 56 | 8 | 56 | 8 |
Total intangibles | $ 0 | $ 0 | $ 0 | $ 0 |

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