Mortgage Servicing Rights (Narrative) (Details) (USD $)					3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2010	Dec. 31, 2009	Jun. 30, 2011 Mortgage Banking Income [Member]	Jun. 30, 2010 Mortgage Banking Income [Member]	Jun. 30, 2011 Mortgage Banking Income [Member]	Jun. 30, 2010 Mortgage Banking Income [Member]	Jun. 30, 2011 Other Income And Commisions [Member]	Jun. 30, 2010 Other Income And Commisions [Member]	Jun. 30, 2011 Other Income And Commisions [Member]	Jun. 30, 2010 Other Income And Commisions [Member]	Jun. 30, 2011 Capitalized MSR [Member]	Jun. 30, 2011 Mortgage Loans Serviced For Others [Member]	Jun. 30, 2010 Mortgage Loans Serviced For Others [Member]	Jun. 30, 2011 Transferred To Third Parties [Member]	Jun. 30, 2010 Transferred To Third Parties [Member]
Unpaid principal of mortgage loans serviced by FHN													$ 26,000,000,000	$ 500,000,000	$ 700,000,000
Servicing, late, and other ancillary fees					19,200,000	26,000,000	40,100,000	53,700,000	600,000	1,100,000	1,300,000	2,200,000
Total MSR recognized by FHN	$ 186,958,000	$ 207,319,000	$ 201,746,000	$ 302,611,000										$ 3,600,000	$ 5,100,000	$ 23,600,000	$ 25,900,000