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Condensed Financial Information Of Synovus Financial Corp. (Parent Company Only) - Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Operating Activities |  |  |
Net income | $ 757,902 | $ 760,467 | $ 373,695
Adjustments to reconcile net income to net cash provided by (used in) operating activities: |  |  |
Other | 677 | 0 | 55,343
Net cash provided by operating activities | 1,191,489 | 794,016 | 17,032
Investing Activities |  |  |
Net cash used in investing activities | (4,855,482) | (4,384,166) | (2,352,973)
Financing Activities |  |  |
Repurchase of common stock | (12,987) | (199,932) | (16,246)
Repayments and redemption of long-term debt | (700,000) | 0 | (2,408,939)
Proceeds from long-term debt, net | 3,622,892 | 0 | 1,445,492
Other | 0 | (1,104) | (1,552)
Net cash provided by financing activities | 2,631,920 | 2,347,086 | 5,401,940
Increase (decrease) in cash and cash equivalents including restricted cash | (1,032,073) | (1,243,064) | 3,065,999
Cash, cash equivalents, and restricted cash at beginning of year | 3,009,853 | 4,252,917 | 1,186,918
Cash, cash equivalents, and restricted cash at end of year | 1,977,780 | 3,009,853 | 4,252,917
Income taxes paid | 175,680 | 204,214 | 110,828
Interest paid | 242,040 | 132,923 | 319,282
Parent Company |  |  |
Operating Activities |  |  |
Net income | 757,902 | 760,467 | 373,695
Adjustments to reconcile net income to net cash provided by (used in) operating activities: |  |  |
Equity in undistributed (income) loss of subsidiaries | (448,555) | (368,702) | 140,819
Deferred income tax expense (benefit) | 143 | (7,296) | 3,962
Net increase (decrease) in other liabilities | 3,233 | (2,082) | 11,243
Net (increase) decrease in other assets | 8,022 | 5,280 | 17,441
Other | 825 | 928 | (5,132)
Net cash provided by operating activities | 321,570 | 388,595 | 542,028
Investing Activities |  |  |
Proceeds from sales of equity securities | 0 | 0 | 23,141
Increase in other investments | (1,027) | (10,000) | 0
Net cash used in investing activities | (1,027) | (10,000) | 23,141
Financing Activities |  |  |
Dividends paid to common and preferred shareholders | (229,311) | (227,840) | (223,130)
Repurchase of common stock | (12,987) | (199,932) | (16,246)
Repayments and redemption of long-term debt | (300,000) | 0 | (250,000)
Proceeds from long-term debt, net | 347,892 | 0 | 0
Other | 0 | (1,104) | (1,552)
Net cash provided by financing activities | (194,406) | (428,876) | (490,928)
Increase (decrease) in cash and cash equivalents including restricted cash | 126,137 | (50,281) | 74,241
Cash, cash equivalents, and restricted cash at beginning of year | 398,348 | 448,629 | 374,388
Cash, cash equivalents, and restricted cash at end of year | 524,485 | 398,348 | 448,629
Income taxes paid | 173,900 | 203,200 | 119,100
Interest paid | $ 29,900 | $ 27,300 | $ 42,000

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