Agreement with World's Foremost Bank and Capital One Bank	6 Months Ended
Jun. 30, 2017
Assumptions for Deposits [Abstract]
Agreement with World's Foremost Bank and Capital One Bank	Note 14 - Agreement with World's Foremost Bank and Capital One Bank On April 17, 2017, Synovus Bank entered into a definitive agreement to acquire certain card assets and assume certain liabilities of World's Foremost Bank (WFB), a wholly-owned subsidiary of Cabela's Incorporated. Immediately following the closing of this transaction, Synovus will sell the credit card assets and related liabilities to Capital One Bank (USA), National Association, a subsidiary of Capital One Financial Corporation (Capital One), while retaining the brokered time deposits portfolio. As of June 30, 2017 the WFB brokered deposits portfolio had a carrying value of approximately $1.1 billion. Pursuant to the terms of the agreement, Synovus will receive $75 million in consideration from Cabela's and Capital One upon closing. Closing of the transaction is subject to customary regulatory approvals and the satisfaction of other closing conditions. The transaction will be accounted for as an assumption of liabilities pursuant to the asset acquisition model and the earning of fees for services performed. The $75 million in consideration will be recorded as a transaction fee, to be recognized upon closing of the transaction as no continuing involvement or contingencies with respect to the sale of the credit card assets and related liabilities will exist. If the transaction between Synovus and Capital One referred to above does not occur immediately after the transaction between Synovus and WFB, then the transaction between Synovus and WFB will be rescinded, including repayment of any cash amounts paid and return of any assets and liabilities transferred, such that Cabela’s, WFB, Capital One and Synovus will be in the same position as if the transaction had never occurred. Additionally, the deposit liabilities acquired by Synovus will be recorded at fair value determined in accordance with the Brokered CD Curve Discount Methodology, as defined in the agreement. In the event that the book value of the deposits is less than the fair value of the deposits, Capital One will provide a cash payment to Synovus to compensate Synovus for the difference; however, Synovus is not required to make any payment if the fair value of the deposits is less than the book value. At June 30, 2017 the deposit portfolio had a weighted average cost of funds of approximately 1.82%, maturities ranging from 2017 through 2023, and a weighted average maturity of approximately 2.79 years. For additional information regarding this transaction, please refer to Synovus' Current Report on Form 8-K filed with the SEC on April 17, 2017.

Note 14 - Agreement with World's Foremost Bank and Capital One Bank

On April 17, 2017, Synovus Bank entered into a definitive agreement to acquire certain card assets and assume certain liabilities of World's Foremost Bank (WFB), a wholly-owned subsidiary of Cabela's Incorporated. Immediately following the closing of this transaction, Synovus will sell the credit card assets and related liabilities to Capital One Bank (USA), National Association, a subsidiary of Capital One Financial Corporation (Capital One), while retaining the brokered time deposits portfolio. As of June 30, 2017 the WFB brokered deposits portfolio had a carrying value of approximately $1.1 billion. Pursuant to the terms of the agreement, Synovus will receive $75 million in consideration from Cabela's and Capital One upon closing. Closing of the transaction is subject to customary regulatory approvals and the satisfaction of other closing conditions.

The transaction will be accounted for as an assumption of liabilities pursuant to the asset acquisition model and the earning of fees for services performed. The $75 million in consideration will be recorded as a transaction fee, to be recognized upon closing of the transaction as no continuing involvement or contingencies with respect to the sale of the credit card assets and related liabilities will exist. If the transaction between Synovus and Capital One referred to above does not occur immediately after the transaction between Synovus and WFB, then the transaction between Synovus and WFB will be rescinded, including repayment of any cash amounts paid and return of any assets and liabilities transferred, such that Cabela’s, WFB, Capital One and Synovus will be in the same position as if the transaction had never occurred.

Additionally, the deposit liabilities acquired by Synovus will be recorded at fair value determined in accordance with the Brokered CD Curve Discount Methodology, as defined in the agreement. In the event that the book value of the deposits is less than the fair value of the deposits, Capital One will provide a cash payment to Synovus to compensate Synovus for the difference; however, Synovus is not required to make any payment if the fair value of the deposits is less than the book value. At June 30, 2017 the deposit portfolio had a weighted average cost of funds of approximately 1.82%, maturities ranging from 2017 through 2023, and a weighted average maturity of approximately 2.79 years.

For additional information regarding this transaction, please refer to Synovus' Current Report on Form 8-K filed with the SEC on April 17, 2017.