Other Short-term Borrowings and Long-term Debt (Tables)

12 Months Ended

Dec. 31, 2023

Debt Disclosure [Abstract]

Schedule of Short-term Borrowings

Other short-term borrowings at December 31, 2023 and 2022 consisted of the following:

(dollars in thousands)	2023		2022
FHLB advances with original maturities of one year or less	$	—	$	600,014
Securities sold short	3,496		3,370
Total other short-term borrowings	$	3,496	$	603,384

The following table sets forth additional information on Synovus' other short-term borrowings for the years indicated.

(dollars in thousands)	2023			2022
Total balance at December 31,	$	3,496		$	603,384
Weighted average interest rate at December 31,	3.88		%	4.51		%
Maximum month-end balance during the year	$	1,253,521		$	1,705,069
Average amount outstanding during the year	528,194			466,254
Weighted average interest rate during the year	4.60		%	2.32		%

Schedule of Long-term Debt Instruments

The following table presents long-term debt at December 31, 2023 and 2022 net of unamortized discounts, debt issuance costs, and the impact of hedge accounting (refer to "Part II - Item 8. Financial Statements and Supplementary Data - Note 13 - Derivative Instruments" of this Report for additional information).

(dollars in thousands)	2023		2022
Parent Company:
5.90% Fixed-to-Fixed Rate Subordinated Notes issued February 7, 2019, due February 7, 2029, subject to redemption prior to February 7, 2029: $300.0 million par value at issuance with semi-annual interest payments at 5.90% for the first five years and semi-annual payments thereafter at a fixed rate of 3.379% above the 5-Year Mid-Swap Rate as of the reset date	$	201,925	$	298,158
5.200% Senior Notes issued August 11, 2022, due August 11, 2025, subject to redemption on or after February 11, 2023, $350.0 million par value at issuance with semi-annual interest payments in arrears and principal to be paid at maturity	340,778		336,332
SOFR + spread of 2.06% junior subordinated debentures, due June 15, 2035, $10.0 million par value at issuance with quarterly interest payments and principal to be paid at maturity (rate of 7.45% at December 31, 2023 and 6.57% at December 31, 2022)	10,000		10,000
Total long-term debt — Parent Company	$	552,703	$	644,490
Synovus Bank:
5.625% Senior Bank Notes issued February 15, 2023, due February 15, 2028, subject to redemption on or after August 15, 2023, $500.0 million par value at issuance with semi-annual interest payments in arrears and principal to be paid at maturity	$	487,099	$	—
4.00% Fixed-to-Fixed Rate Subordinated Bank Notes issued October 29, 2020, due October 29, 2030, $200.0 million par value at issuance with semi-annual interest payments at 4.00% for the first five years and semi-annual payments thereafter at a fixed rate of 3.625% above the 5-Year U.S. Treasury Rate	192,732		190,107
FHLB advances with weighted average interest rate of 5.57% at December 31, 2023 and 4.56% at December 31, 2022	700,000		3,275,000
Total long-term debt — Synovus Bank	1,379,831		3,465,107
Total long-term debt	$	1,932,534	$	4,109,597

Schedule of Principal Payments on Long-term Debt

Contractual annual principal payments on long-term debt for the next five years and thereafter are shown in the following table. These maturities are based upon the par value at December 31, 2023 of the long-term debt.

(in thousands)	Parent Company		Synovus Bank		Total
2024	$	—	$	—	$	—
2025	350,000		700,000		1,050,000
2026	—		—		—
2027	—		—		—
2028	—		500,000		500,000
Thereafter	212,967		200,000		412,967
Total	$	562,967	$	1,400,000	$	1,962,967