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v3.24.3

Business Segment Information - Amounts of Consolidated Revenue, Expense, Tax and Assets by Segment (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
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Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |
Net interest income (expense) | $ 627 |  |  | $ 605 |  |  | $ 1,881 | $ 1,923 |
Provision for credit losses | 35 |  |  | 110 |  |  | 140 | 210 |
Noninterest income | 200 |  |  | 173 |  |  | 581 | 745 |
Noninterest expense | 511 |  |  | 474 |  |  | 1,527 | 1,508 |
Income (loss) before income taxes | 281 |  |  | 194 |  |  | 795 | 950 |
Income tax expense (benefit) | 58 |  |  | 52 |  |  | 171 | 223 |
Net income | 223 | $ 204 | $ 197 | 142 | $ 329 | $ 255 | 624 | 727 |
Average assets | 82,366 |  |  | 83,220 |  |  | 81,779 | 81,471 |
Gain on merger termination | 0 |  |  | 0 |  |  | 0 | 225 |
Visa Class B Shares |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |
Derivative valuation adjustment | 15 |  |  |  |  |  | 15 |  | $ 15
Regional Banking |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |
Net interest income (expense) | 517 |  |  | 558 |  |  | 1,572 | 1,705 |
Provision for credit losses | 33 |  |  | 113 |  |  | 119 | 184 |
Noninterest income | 114 |  |  | 106 |  |  | 328 | 316 |
Noninterest expense | 329 |  |  | 310 |  |  | 986 | 937 |
Income (loss) before income taxes | 269 |  |  | 241 |  |  | 795 | 900 |
Income tax expense (benefit) | 63 |  |  | 56 |  |  | 185 | 210 |
Net income | 206 |  |  | 185 |  |  | 610 | 690 |
Average assets | 43,425 |  |  | 43,249 |  |  | 43,344 | 42,285 |
Gain on merger termination |  |  |  |  |  |  |  | 0 |
Specialty Banking |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |
Net interest income (expense) | 166 |  |  | 160 |  |  | 476 | 467 |
Provision for credit losses | 3 |  |  | 2 |  |  | 26 | 35 |
Noninterest income | 67 |  |  | 49 |  |  | 203 | 156 |
Noninterest expense | 104 |  |  | 96 |  |  | 311 | 292 |
Income (loss) before income taxes | 126 |  |  | 111 |  |  | 342 | 296 |
Income tax expense (benefit) | 31 |  |  | 27 |  |  | 83 | 72 |
Net income | 95 |  |  | 84 |  |  | 259 | 224 |
Average assets | 24,945 |  |  | 24,084 |  |  | 24,432 | 23,353 |
Gain on merger termination |  |  |  |  |  |  |  | 0 |
Corporate |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |
Net interest income (expense) | (56) |  |  | (113) |  |  | (167) | (249) |
Provision for credit losses | (1) |  |  | (5) |  |  | (5) | (9) |
Noninterest income | 19 |  |  | 18 |  |  | 50 | 273 |
Noninterest expense | 78 |  |  | 68 |  |  | 230 | 279 |
Income (loss) before income taxes | (114) |  |  | (158) |  |  | (342) | (246) |
Income tax expense (benefit) | (36) |  |  | (31) |  |  | (97) | (59) |
Net income | (78) |  |  | (127) |  |  | (245) | (187) |
Average assets | 13,996 |  |  | 15,887 |  |  | 14,003 | 15,833 |
Restructuring costs | 2 |  |  | 10 |  |  | 10 | 10 |
Special assessment fee (credit) | (2) |  |  |  |  |  | 10 |  |
Surrender of bank owned life insurance policies, expense |  |  |  | 24 |  |  |  | 24 |
Benefit from merger-related tax items |  |  |  | $ 11 |  |  |  | 11 |
Gain on merger termination |  |  |  |  |  |  |  | 225 |
Corporate | First Horizon Foundation |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |
Charitable foundation contributions |  |  |  |  |  |  |  | 50 |
Corporate | TD Transaction |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |
Merger and integration expense |  |  |  |  |  |  |  | 51 |
Gain on merger termination |  |  |  |  |  |  |  | 225 |
Corporate | Visa Class B Shares |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |
Derivative valuation adjustment | $ 15 |  |  |  |  |  | $ 15 | $ 15 |

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