Mortgage Servicing Rights (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012
Participating Mortgage Loans [Line Items]
Total MSR recognized by FHN	$ 4,687,000	$ 109,102,000	$ 72,793,000	$ 114,311,000
Unpaid principal of mortgage loans serviced by FHN		17,000,000,000
Percentage of single-family mortgage loans received as fees		0.29%
Percentage of outstanding balance generating for annual servicing inclusive excess interests		0.34%
Sale of MSR	(68,519,000)	0
Transferred To Third Parties [Member]
Participating Mortgage Loans [Line Items]
Total MSR recognized by FHN		11,000,000
Mortgage Banking Income [Member]
Participating Mortgage Loans [Line Items]
Servicing, late, and other ancillary fees	$ 20,100,000	$ 12,100,000