Variable Interest Entities (Summary Of VIE Consolidated By FHN) (Details) (USD $) In Thousands	Jun. 30, 2011		Dec. 31, 2010	Jun. 30, 2010		Dec. 31, 2009	Jun. 30, 2011 Variable Interest Entity Consolidated Carrying Amount Assets [Member] On-Balance Sheet Consumer Loan Securitizations [Member]	Jun. 30, 2010 Variable Interest Entity Consolidated Carrying Amount Assets [Member] On-Balance Sheet Consumer Loan Securitizations [Member]	Jun. 30, 2011 Variable Interest Entity Consolidated Carrying Amount Assets [Member] Rabbi Trusts Used for Deferred Compensation Plans [Member]	Jun. 30, 2010 Variable Interest Entity Consolidated Carrying Amount Assets [Member] Rabbi Trusts Used for Deferred Compensation Plans [Member]	Jun. 30, 2011 Variable Interest Entity Consolidated Carrying Amount Liabilities [Member] On-Balance Sheet Consumer Loan Securitizations [Member]	Jun. 30, 2010 Variable Interest Entity Consolidated Carrying Amount Liabilities [Member] On-Balance Sheet Consumer Loan Securitizations [Member]	Jun. 30, 2011 Variable Interest Entity Consolidated Carrying Amount Liabilities [Member] Rabbi Trusts Used for Deferred Compensation Plans [Member]	Jun. 30, 2010 Variable Interest Entity Consolidated Carrying Amount Liabilities [Member] Rabbi Trusts Used for Deferred Compensation Plans [Member]	Mar. 31, 2011 Subordinated Debentures Subject To Mandatory Redemption - Amounts Redeemed [Member]	Jun. 30, 2010 Subordinated Debentures Subject To Mandatory Redemption - Amounts Redeemed [Member]
Cash and due from banks	$ 313,416		$ 344,384	$ 364,857			$ 1,805
Loans, net of unearned income	16,061,646	[1],[2]	16,782,572	17,154,050	[1],[2]		694,031	833,830
Less: Allowance for loan losses (Restricted - $33.0 million on June 30, 2011; $50.1 million on June 30, 2010; and $47.5 million on December 31, 2010) (Note 4)	524,091	[1],[2]	664,799	781,269	[1],[2]	896,914	33,030	50,143
Total net loans	15,537,555		16,117,773	16,372,781			661,001	783,687
Other assets	2,117,544		2,121,506	2,178,248			13,983	24,662	62,207	59,804
Total assets	25,054,066		24,698,952	26,254,226			676,789	808,349	62,207	59,804
Noninterest-bearing deposits	4,937,103		4,376,285	4,409,505							903	880
Term borrowings	2,502,517		3,228,070	2,926,675							682,764	830,356			103,100	309,300
Other liabilities	816,331		861,577	836,607							49	121	55,387	55,341
Total liabilities	$ 22,372,684		$ 22,020,947	$ 22,966,993							$ 683,716	$ 831,357	$ 55,387	$ 55,341

[1] Q2 2011 and Q2 2010 include $29.9 million and $43.0 million of reserves, respectively, and $649.2 million and $770.3 million of balances in restricted consumer real estate loans, respectively.

[2] Q2 2011 and Q2 2010 include $3.1 million and $7.1 million of reserves, respectively, and $44.9 million and $63.5 million of balances in restricted permanent mortgage loans, respectively.