Share-based Compensation (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of authorized but unissued common stock reserved for future grants	23,685,188		23,685,188
Share-based compensation expense	$ 2,900,000	$ 1,500,000	$ 4,600,000	$ 2,400,000
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (years)			3 years
Other equity compensation, shares granted			3,160,800
Weighted-average exercise price, shares granted during period			$ 2.05
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awarded stock options to key employee			4,586,666
Vesting period (years)			3 years
Grant-date fair value of the awarded stock options			$ 1.03
Options outstanding	19,456,631		19,456,631
Weighted-average exercise price, options	$ 8.37		$ 8.37
Non-Vested Synovus Shares And Restricted Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other equity compensation, non-vested shares outstanding	6,355,357		6,355,357
Weighted-average exercise price, non-vested shares outstanding	$ 2.36		$ 2.36
Salary Stock Units (SSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other equity compensation, shares granted			300,478
Total fair value of units granted			$ 595,000
2007 Omnibus Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, minimum (years)			P2Y
Vesting period, maximum (years)			P5Y
Contractual term (years)			10