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Subsequent Event
12 Months Ended
Dec. 31, 2021
Subsequent Events [Abstract]  
Subsequent Event Note 19 - Subsequent EventSubsequent to December 31, 2021, Synovus Bank provided irrevocable notice to its holders of its intent to redeem the 2.289% Fixed-to-Floating Senior Bank Notes of $400 million par value that were subject to redemption. The Notes were redeemed on February 10, 2022 with a net payment of $405.3 million that included $400.0 million in principal, $4.6 million in interest, and $675 thousand of written off debt issuance costs.