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Parent Company Condensed Financial Statements - Condensed Statement of Cash Flows (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Statement of cash flows |  |  |
Net income | $ 1,128,083 | $ 872,981 | $ 567,797
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Deferred income (benefit) tax expense | (43,988) | 4,762 | (41,515)
Net change in other assets | 187,512 | 124,496 | (340,566)
Net change in other liabilities | 461,385 | (63,360) | 136,260
Net cash provided by operating activities | 2,066,022 | 1,168,422 | 692,644
CASH FLOWS FROM INVESTING ACTIVITIES |  |  |
Net increase in investments in tax credit investments | (167,303) | (189,836) | (154,887)
Distributions received from equity method investees | 18,221 | 14,440 | 15,901
Net cash (used in) provided by investing activities | (4,582,892) | (9,117,204) | (6,873,736)
Common stock: |  |  |
Proceeds from issuance pursuant to various stock compensation plans and agreements | 3,178 | 2,573 | 2,326
Stocks tendered for payment of withholding taxes | (19,087) | (15,702) | (8,253)
Repurchase of common stocks pursuant to the Stock Repurchase Program | (99,990) | 0 | (145,966)
Cash dividends paid | (228,381) | (188,762) | (158,222)
Net cash provided by financing activities | 2,114,210 | 7,835,045 | 6,908,908
Net (decrease) increase in cash and cash equivalents | (431,151) | (105,036) | 756,822
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR | 3,912,935 | 4,017,971 | 3,261,149
CASH AND CASH EQUIVALENTS, END OF YEAR | 3,481,784 | 3,912,935 | 4,017,971
Parent Company |  |  |
Statement of cash flows |  |  |
Net income | 1,128,083 | 872,981 | 567,797
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Undistributed earnings of subsidiaries, principally bank | (897,069) | (680,958) | (65,046)
Amortization expense | 1,333 | 1,877 | 1,523
Deferred income (benefit) tax expense | (2,193) | 2,721 | 491
Net change in other assets | 4,250 | (5,685) | 40
Net change in other liabilities | 779 | (81,706) | 77,052
Net cash provided by operating activities | 235,183 | 109,230 | 581,857
CASH FLOWS FROM INVESTING ACTIVITIES |  |  |
Net increase in investments in tax credit investments | (1,612) | (346) | (172)
Distributions received from equity method investees | 410 | 436 | 4,096
Net increase in investments in and advances to nonbank subsidiaries | (6,188) | (1,476) | (2,732)
Net cash (used in) provided by investing activities | (7,390) | (1,386) | 1,192
Common stock: |  |  |
Proceeds from issuance pursuant to various stock compensation plans and agreements | 3,178 | 2,573 | 2,326
Stocks tendered for payment of withholding taxes | (19,087) | (15,702) | (8,253)
Repurchase of common stocks pursuant to the Stock Repurchase Program | (99,990) | 0 | (145,966)
Cash dividends paid | (228,381) | (188,762) | (158,222)
Net cash provided by financing activities | (344,280) | (201,891) | (310,115)
Net (decrease) increase in cash and cash equivalents | (116,487) | (94,047) | 272,934
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR | 345,018 | 439,065 | 166,131
CASH AND CASH EQUIVALENTS, END OF YEAR | $ 228,531 | $ 345,018 | $ 439,065

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