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Parent Company Condensed Financial Statements - Schedule of Condensed Statement of Cash Flows (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Statement of cash flows |  |  |
Net income | $ 1,165,586 | $ 1,161,161 | $ 1,128,083
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Deferred income tax expense (benefit) | (14,283) | (49,139) | (43,988)
Net change in other assets | 63,743 | (146,270) | 187,512
Net change in other liabilities | (242,443) | 105,304 | 461,385
Other operating activities, net | (3,755) | 3,860 | 1,673
Net cash provided by operating activities | 1,411,667 | 1,424,909 | 2,066,022
CASH FLOWS FROM INVESTING ACTIVITIES |  |  |
Other investing activities, net | (14,704) | (112,036) | (8,454)
Net cash used in investing activities | (6,295,203) | (4,247,161) | (4,582,892)
Long-term debt: |  |  |
Repayment of junior subordinated debt | (117,437) | (871) | (943)
Common stock: |  |  |
Proceeds from issuance pursuant to various stock compensation plans and agreements | 3,023 | 3,208 | 3,178
Stock tendered for payment of withholding taxes | (14,877) | (23,751) | (19,087)
Repurchase of common stock pursuant to the stock repurchase program | (143,082) | (82,174) | (99,990)
Cash dividends paid | (308,478) | (274,554) | (228,381)
Net cash provided by financing activities | 5,527,526 | 3,962,454 | 2,114,210
Net (decrease) increase in cash and cash equivalents | 635,758 | 1,133,200 | (431,151)
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR | 4,614,984 | 3,481,784 | 3,912,935
CASH AND CASH EQUIVALENTS, END OF YEAR | 5,250,742 | 4,614,984 | 3,481,784
Parent Company |  |  |
Statement of cash flows |  |  |
Net income | 1,165,586 | 1,161,161 | 1,128,083
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Undistributed earnings of subsidiaries, principally bank | (635,868) | (470,740) | (897,069)
Deferred income tax expense (benefit) | 2,788 | 948 | (2,193)
Net change in other assets | (6,912) | (4,160) | 4,250
Net change in other liabilities | (802) | (47) | 779
Other operating activities, net | 1,265 | 2,443 | 1,333
Net cash provided by operating activities | 526,057 | 689,605 | 235,183
CASH FLOWS FROM INVESTING ACTIVITIES |  |  |
Redemption of trust preferred securities | 3,558 | 0 | 0
Other investing activities, net | (494) | (95,095) | (7,390)
Net cash used in investing activities | 3,064 | (95,095) | (7,390)
Long-term debt: |  |  |
Repayment of junior subordinated debt | (116,558) | 0 | 0
Common stock: |  |  |
Proceeds from issuance pursuant to various stock compensation plans and agreements | 3,023 | 3,208 | 3,178
Stock tendered for payment of withholding taxes | (14,877) | (23,751) | (19,087)
Repurchase of common stock pursuant to the stock repurchase program | (143,082) | (82,174) | (99,990)
Cash dividends paid | (308,478) | (274,554) | (228,381)
Net cash provided by financing activities | (579,972) | (377,271) | (344,280)
Net (decrease) increase in cash and cash equivalents | (50,851) | 217,239 | (116,487)
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR | 445,770 | 228,531 | 345,018
CASH AND CASH EQUIVALENTS, END OF YEAR | $ 394,919 | $ 445,770 | $ 228,531

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