Variable Interest Entities	12 Months Ended
Dec. 31, 2015
Variable Interest Entities [Abstract]
Variable Interest Entities	Note 16 - Variable Interest Entities Synovus has a contractual ownership or other interests in certain VIEs for which the fair value of the VIE's net assets may change exclusive of the variable interests. Under ASC 810, Consolidation, Synovus is deemed to be the primary beneficiary and required to consolidate a VIE if it has a variable interest in the VIE that provides it with a controlling financial interest. For such purposes, the determination of whether a controlling financial interest exists is based on whether a single party has both the power to direct the activities of the VIE that most significantly impact the VIE's economic performance and the obligation to absorb the losses of the VIE or the right to receive benefits from the VIE that could potentially be significant to the VIE. ASC 810-10-65, as amended, requires continual reconsideration of conclusions reached regarding which interest holder is a VIE's primary beneficiary. Synovus’ involvement with VIEs is discussed below. Synovus consolidates VIEs for which it is deemed the primary beneficiary. Consolidated Variable Interest Entities Rabbi Trusts – Synovus has established certain rabbi trusts related to deferred compensation plans offered to its employees. Synovus contributes employee cash compensation deferrals to the trusts and directs the underlying investments made by the trusts. The assets of these trusts are available to Synovus creditors only in the event that Synovus becomes insolvent. These trusts are considered VIEs because either there is no equity at risk in the trusts or because Synovus provided the equity interest to its employees in exchange for services rendered. While the employees have the ability to direct their funds within the trusts, Synovus is considered the primary beneficiary of the rabbi trusts as it has the ability to direct the underlying investments made by the trusts as well as make funding decisions related to the trusts, the activities that most significantly impact the economic performance of the rabbi trusts. Synovus includes the assets of the rabbi trusts as a component of other assets and a corresponding liability for the associated benefit obligation in other liabilities in its consolidated balance sheets. At December 31, 2015 and 2014, the aggregate amount of rabbi trust assets and benefit obligation was $10.7 million and $11.3 million, respectively. Non-consolidated Variable Interest Entities Low Income Housing Tax Credit Partnerships – Synovus and its subsidiary bank, Synovus Bank, make equity investments as a limited partner in various partnerships which are engaged in the development and operation of affordable multi-family housing utilizing the LIHTC pursuant to Section 42 of the Internal Revenue Code. The purpose of these investments is to earn a return on the investment and to support community reinvestment initiatives of Synovus’ subsidiary bank. The activities of these LIHTC partnerships are limited to development and operation of multi-family housing that is leased to qualifying residential tenants. These partnerships are generally located in southeastern communities where Synovus has a banking presence and are considered VIEs because Synovus, as the holder of an equity investment at risk, does not have voting or similar rights and does not participate in the management or direct the operations of the partnerships (activities which affect the success of the partnerships). Synovus provides construction lending for certain of the LIHTC partnerships in which it also has an equity investment. Synovus is at risk for the amount of its equity investment plus the outstanding amount of any construction loans in excess of the fair value of the collateral for the loan but has no obligation to fund the operations or working capital of the partnerships. The general partners of these partnerships are considered the primary beneficiaries because they are charged with management responsibility which give them the power to direct the activities that most significantly impact the financial performance of the partnerships, and they are exposed to losses beyond Synovus’ equity investment. At December 31, 2015 and 2014, the aggregate carrying value of Synovus’ investments in LIHTC partnerships was $18.9 million and $10.9 million, respectively, and the cumulative amount of equity investments was $29.3 million in 2015 and $29.1 million in 2014. Synovus uses the equity method of accounting for these investments which are included as a component of other assets on Synovus’ consolidated balance sheet. At December 31, 2015 and 2014, Synovus had $12.2 million and $3.6 million, respectively, commitments to fund equity investments in LIHTC partnerships. Certain Commercial Loans – For certain troubled commercial loans, Synovus restructures the terms of the borrower’s debt in an effort to increase the probability of receipt of amounts contractually due. A troubled debt restructuring generally requires consideration of whether the borrowing entity is a VIE as economic events may have proven that the entity’s equity is not sufficient to permit it to finance its activities without additional subordinated financial support or a restructuring of the terms of its financing. As Synovus does not have the power to direct the activities that most significantly impact such troubled commercial borrowers’ operations, it is not considered the primary beneficiary, even in situations where, based on the size of the financing provided, Synovus is exposed to potentially significant benefits and losses of the borrowing entity. Synovus has no contractual requirements to provide financial support to the borrowing entities beyond certain funding commitments established upon restructuring of the terms of the debt that allow for preparation of the underlying collateral for sale.

Note 16 - Variable Interest Entities

Synovus has a contractual ownership or other interests in certain VIEs for which the fair value of the VIE's net assets may change exclusive of the variable interests. Under ASC 810, Consolidation, Synovus is deemed to be the primary beneficiary and required to consolidate a VIE if it has a variable interest in the VIE that provides it with a controlling financial interest. For such purposes, the determination of whether a controlling financial interest exists is based on whether a single party has both the power to direct the activities of the VIE that most significantly impact the VIE's economic performance and the obligation to absorb the losses of the VIE or the right to receive benefits from the VIE that could potentially be significant to the VIE. ASC 810-10-65, as amended, requires continual reconsideration of conclusions reached regarding which interest holder is a VIE's primary beneficiary.

Synovus’ involvement with VIEs is discussed below. Synovus consolidates VIEs for which it is deemed the primary beneficiary.

Consolidated Variable Interest Entities

Rabbi Trusts – Synovus has established certain rabbi trusts related to deferred compensation plans offered to its employees. Synovus contributes employee cash compensation deferrals to the trusts and directs the underlying investments made by the trusts. The assets of these trusts are available to Synovus creditors only in the event that Synovus becomes insolvent. These trusts are considered VIEs because either there is no equity at risk in the trusts or because Synovus provided the equity interest to its employees in exchange for services rendered. While the employees have the ability to direct their funds within the trusts, Synovus is considered the primary beneficiary of the rabbi trusts as it has the ability to direct the underlying investments made by the trusts as well as make funding decisions related to the trusts, the activities that most significantly impact the economic performance of the rabbi trusts. Synovus includes the assets of the rabbi trusts as a component of other assets and a corresponding liability for the associated benefit obligation in other liabilities in its consolidated balance sheets. At December 31, 2015 and 2014, the aggregate amount of rabbi trust assets and benefit obligation was $10.7 million and $11.3 million, respectively.

Non-consolidated Variable Interest Entities

Low Income Housing Tax Credit Partnerships – Synovus and its subsidiary bank, Synovus Bank, make equity investments as a limited partner in various partnerships which are engaged in the development and operation of affordable multi-family housing utilizing the LIHTC pursuant to Section 42 of the Internal Revenue Code. The purpose of these investments is to earn a return on the investment and to support community reinvestment initiatives of Synovus’ subsidiary bank. The activities of these LIHTC partnerships are limited to development and operation of multi-family housing that is leased to qualifying residential tenants. These partnerships are generally located in southeastern communities where Synovus has a banking presence and are considered VIEs because Synovus, as the holder of an equity investment at risk, does not have voting or similar rights and does not participate in the management or direct the operations of the partnerships (activities which affect the success of the partnerships). Synovus provides construction lending for certain of the LIHTC partnerships in which it also has an equity investment. Synovus is at risk for the amount of its equity investment plus the outstanding amount of any construction loans in excess of the fair value of the collateral for the loan but has no obligation to fund the operations or working capital of the partnerships. The general partners of these partnerships are considered the primary beneficiaries because they are charged with management responsibility which give them the power to direct the activities that most significantly impact the financial performance of the partnerships, and they are exposed to losses beyond Synovus’ equity investment. At December 31, 2015 and 2014, the aggregate carrying value of Synovus’ investments in LIHTC partnerships was $18.9 million and $10.9 million, respectively, and the cumulative amount of equity investments was $29.3 million in 2015 and $29.1 million in 2014. Synovus uses the equity method of accounting for these investments which are included as a component of other assets on Synovus’ consolidated balance sheet. At December 31, 2015 and 2014, Synovus had $12.2 million and $3.6 million, respectively, commitments to fund equity investments in LIHTC partnerships.

Certain Commercial Loans – For certain troubled commercial loans, Synovus restructures the terms of the borrower’s debt in an effort to increase the probability of receipt of amounts contractually due. A troubled debt restructuring generally requires consideration of whether the borrowing entity is a VIE as economic events may have proven that the entity’s equity is not sufficient to permit it to finance its activities without additional subordinated financial support or a restructuring of the terms of its financing. As Synovus does not have the power to direct the activities that most significantly impact such troubled commercial borrowers’ operations, it is not considered the primary beneficiary, even in situations where, based on the size of the financing provided, Synovus is exposed to potentially significant benefits and losses of the borrowing entity. Synovus has no contractual requirements to provide financial support to the borrowing entities beyond certain funding commitments established upon restructuring of the terms of the debt that allow for preparation of the underlying collateral for sale.