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BUSINESS OPERATING SEGMENTS (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | $ 1,148 | $ 1,062 | $ 3,360 | $ 3,093
Noninterest income | 416 | 381 | 1,175 | 1,130
Total revenue | 1,564 | 1,443 | 4,535 | 4,223
Noninterest expense | 910 | 858 | 2,668 | 2,576
Profit (loss) before provision for credit losses | 654 | 585 | 1,867 | 1,647
Provision for credit losses | 78 | 72 | 241 | 238
Income before income tax expense | 576 | 513 | 1,626 | 1,409
Income tax expense (benefit) | 133 | 165 | 370 | 423
NET INCOME | 443 | 348 | 1,256 | 986
Total average assets | 155,624 | 150,012 | 153,482 | 149,563
Operating Segments | Consumer Banking |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | 776 | 674 | 2,268 | 1,969
Noninterest income | 258 | 227 | 708 | 676
Total revenue | 1,034 | 901 | 2,976 | 2,645
Noninterest expense | 686 | 648 | 2,000 | 1,939
Profit (loss) before provision for credit losses | 348 | 253 | 976 | 706
Provision for credit losses | 71 | 65 | 209 | 189
Income before income tax expense | 277 | 188 | 767 | 517
Income tax expense (benefit) | 70 | 66 | 193 | 182
NET INCOME | 207 | 122 | 574 | 335
Total average assets | 62,974 | 60,012 | 61,857 | 59,310
Operating Segments | Commercial Banking |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | 380 | 354 | 1,113 | 1,044
Noninterest income | 140 | 136 | 405 | 400
Total revenue | 520 | 490 | 1,518 | 1,444
Noninterest expense | 202 | 195 | 610 | 577
Profit (loss) before provision for credit losses | 318 | 295 | 908 | 867
Provision for credit losses | 14 | 0 | 19 | 20
Income before income tax expense | 304 | 295 | 889 | 847
Income tax expense (benefit) | 70 | 94 | 203 | 279
NET INCOME | 234 | 201 | 686 | 568
Total average assets | 52,871 | 49,833 | 51,820 | 49,604
Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | (8) | 34 | (21) | 80
Noninterest income | 18 | 18 | 62 | 54
Total revenue | 10 | 52 | 41 | 134
Noninterest expense | 22 | 15 | 58 | 60
Profit (loss) before provision for credit losses | (12) | 37 | (17) | 74
Provision for credit losses | (7) | 7 | 13 | 29
Income before income tax expense | (5) | 30 | (30) | 45
Income tax expense (benefit) | (7) | 5 | (26) | (38)
NET INCOME | 2 | 25 | (4) | 83
Total average assets | $ 39,779 | $ 40,167 | $ 39,805 | $ 40,649

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