| Consolidated Balance Sheets | |||||||||||||||||
| (dollars in millions) | |||||||||||||||||
| 3/31/2025 | 12/31/2024 | 3/31/2024 | |||||||||||||||
| Assets | |||||||||||||||||
| Loans | $ | 104,809 | $ | 104,260 | $ | 109,885 | |||||||||||
| Loans held for sale | 811 | 797 | 228 | ||||||||||||||
| Securities available for sale | 40,751 | 37,707 | 37,298 | ||||||||||||||
| Held-to-maturity securities | 7,160 | 7,395 | 8,272 | ||||||||||||||
| Trading account assets | 1,296 | 1,283 | 1,171 | ||||||||||||||
| Short-term investments | 15,349 | 17,504 | 13,205 | ||||||||||||||
| Other investments | 1,050 | 1,041 | 1,247 | ||||||||||||||
| Total earning assets | 171,226 | 169,987 | 171,306 | ||||||||||||||
| Allowance for loan and lease losses | (1,429) | (1,409) | (1,542) | ||||||||||||||
| Cash and due from banks | 1,909 | 1,743 | 1,247 | ||||||||||||||
| Premises and equipment | 602 | 614 | 650 | ||||||||||||||
| Goodwill | 2,752 | 2,752 | 2,752 | ||||||||||||||
| Other intangible assets | 22 | 27 | 48 | ||||||||||||||
| Corporate-owned life insurance | 4,404 | 4,394 | 4,392 | ||||||||||||||
| Accrued income and other assets | 8,958 | 8,797 | 8,314 | ||||||||||||||
| Discontinued assets | 247 | 263 | 318 | ||||||||||||||
| Total assets | $ | 188,691 | $ | 187,168 | $ | 187,485 | |||||||||||
| Liabilities | |||||||||||||||||
| Deposits in domestic offices: | |||||||||||||||||
| Interest-bearing deposits | 122,283 | 120,132 | 114,593 | ||||||||||||||
| Noninterest-bearing deposits | 28,454 | 29,628 | 29,638 | ||||||||||||||
| Total deposits | 150,737 | 149,760 | 144,231 | ||||||||||||||
| Federal funds purchased and securities sold under repurchase agreements | 22 | 14 | 27 | ||||||||||||||
| Bank notes and other short-term borrowings | 2,328 | 2,130 | 2,896 | ||||||||||||||
| Accrued expense and other liabilities | 4,209 | 4,983 | 5,008 | ||||||||||||||
| Long-term debt | 12,392 | 12,105 | 20,776 | ||||||||||||||
| Total liabilities | 169,688 | 168,992 | 172,938 | ||||||||||||||
| Equity | |||||||||||||||||
| Preferred stock | 2,500 | 2,500 | 2,500 | ||||||||||||||
| Common shares | 1,257 | 1,257 | 1,257 | ||||||||||||||
| Capital surplus | 5,946 | 6,038 | 6,164 | ||||||||||||||
| Retained earnings | 14,724 | 14,584 | 15,662 | ||||||||||||||
| Treasury stock, at cost | (2,637) | (2,733) | (5,722) | ||||||||||||||
| Accumulated other comprehensive income (loss) | (2,787) | (3,470) | (5,314) | ||||||||||||||
| Key shareholders’ equity | 19,003 | 18,176 | 14,547 | ||||||||||||||
| Noncontrolling interests | — | — | — | ||||||||||||||
| Total equity | 19,003 | 18,176 | 14,547 | ||||||||||||||
| Total liabilities and equity | $ | 188,691 | $ | 187,168 | $ | 187,485 | |||||||||||
| Common shares outstanding (000) | 1,111,986 | 1,106,786 | 942,776 | ||||||||||||||
| Consolidated Statements of Income | |||||||||||||||||
| (dollars in millions, except per share amounts) | |||||||||||||||||
| Three months ended | |||||||||||||||||
| 3/31/2025 | 12/31/2024 | 3/31/2024 | |||||||||||||||
| Interest income | |||||||||||||||||
| Loans | $ | 1,401 | $ | 1,448 | $ | 1,538 | |||||||||||
| Loans held for sale | 14 | 20 | 14 | ||||||||||||||
| Securities available for sale | 392 | 353 | 232 | ||||||||||||||
| Held-to-maturity securities | 63 | 66 | 75 | ||||||||||||||
| Trading account assets | 17 | 16 | 14 | ||||||||||||||
| Short-term investments | 174 | 214 | 142 | ||||||||||||||
| Other investments | 9 | 15 | 17 | ||||||||||||||
| Total interest income | 2,070 | 2,132 | 2,032 | ||||||||||||||
| Interest expense | |||||||||||||||||
| Deposits | 753 | 821 | 782 | ||||||||||||||
| Federal funds purchased and securities sold under repurchase agreements | 1 | 1 | 1 | ||||||||||||||
| Bank notes and other short-term borrowings | 27 | 24 | 46 | ||||||||||||||
| Long-term debt | 193 | 235 | 328 | ||||||||||||||
| Total interest expense | 974 | 1,081 | 1,157 | ||||||||||||||
| Net interest income | 1,096 | 1,051 | 875 | ||||||||||||||
| Provision for credit losses | 118 | 39 | 101 | ||||||||||||||
| Net interest income after provision for credit losses | 978 | 1,012 | 774 | ||||||||||||||
| Noninterest income | |||||||||||||||||
| Trust and investment services income | 139 | 142 | 136 | ||||||||||||||
| Investment banking and debt placement fees | 175 | 221 | 170 | ||||||||||||||
| Service charges on deposit accounts | 69 | 65 | 63 | ||||||||||||||
| Operating lease income and other leasing gains | 9 | 15 | 24 | ||||||||||||||
| Corporate services income | 65 | 69 | 69 | ||||||||||||||
| Cards and payments income | 82 | 85 | 77 | ||||||||||||||
| Corporate-owned life insurance income | 33 | 36 | 32 | ||||||||||||||
| Consumer mortgage income | 13 | 16 | 14 | ||||||||||||||
| Commercial mortgage servicing fees | 76 | 68 | 56 | ||||||||||||||
| Other income | 7 | (5) | 9 | ||||||||||||||
| Net securities gains (losses) | — | (908) | (3) | ||||||||||||||
| Total noninterest income | 668 | (196) | 647 | ||||||||||||||
| Noninterest expense | |||||||||||||||||
| Personnel | 680 | 734 | 674 | ||||||||||||||
| Net occupancy | 67 | 67 | 67 | ||||||||||||||
| Computer processing | 107 | 107 | 102 | ||||||||||||||
| Business services and professional fees | 40 | 55 | 41 | ||||||||||||||
| Equipment | 20 | 20 | 20 | ||||||||||||||
| Operating lease expense | 11 | 15 | 17 | ||||||||||||||
| Marketing | 21 | 33 | 19 | ||||||||||||||
| Intangible asset amortization | — | — | — | ||||||||||||||
| Other expense | 185 | 198 | 203 | ||||||||||||||
| Total noninterest expense | 1,131 | 1,229 | 1,143 | ||||||||||||||
| Income (loss) from continuing operations before income taxes | 515 | (413) | 278 | ||||||||||||||
| Income taxes | 109 | (169) | 59 | ||||||||||||||
| Income (loss) from continuing operations | 406 | (244) | 219 | ||||||||||||||
| Income (loss) from discontinued operations, net of taxes | (1) | — | — | ||||||||||||||
| Net income (loss) | 405 | (244) | 219 | ||||||||||||||
| Less: Net income (loss) attributable to noncontrolling interests | — | — | — | ||||||||||||||
| Net income (loss) attributable to Key | $ | 405 | $ | (244) | $ | 219 | |||||||||||
| Income (loss) from continuing operations attributable to Key common shareholders | $ | 370 | $ | (279) | $ | 183 | |||||||||||
| Net income (loss) attributable to Key common shareholders | 369 | (279) | 183 | ||||||||||||||
| Per common share | |||||||||||||||||
| Income (loss) from continuing operations attributable to Key common shareholders | $ | .34 | $ | (.28) | $ | .20 | |||||||||||
| Income (loss) from discontinued operations, net of taxes | — | — | — | ||||||||||||||
Net income (loss) attributable to Key common shareholders (a) | .34 | (.28) | .20 | ||||||||||||||
| Per common share — assuming dilution | |||||||||||||||||
| Income (loss) from continuing operations attributable to Key common shareholders | $ | .33 | $ | (.28) | $ | .20 | |||||||||||
| Income (loss) from discontinued operations, net of taxes | — | — | — | ||||||||||||||
Net income (loss) attributable to Key common shareholders (a) | .33 | (.28) | $ | .20 | |||||||||||||
| Cash dividends declared per common share | $ | .205 | $ | .205 | $ | .205 | |||||||||||
| Weighted-average common shares outstanding (000) | 1,096,654 | 986,829 | 929,692 | ||||||||||||||
Effect of common share options and other stock awards (b) | 9,486 | — | 7,319 | ||||||||||||||
Weighted-average common shares and potential common shares outstanding (000) (c) | 1,106,140 | 986,829 | 937,011 | ||||||||||||||