Mortgage Servicing Rights (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended
	Mar. 31, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Dec. 31, 2012
Participating Mortgage Loans [Line Items]
Total MSR recognized by FHN		$ 113,853,000	$ 3,197,000	$ 113,853,000	$ 72,793,000	$ 114,311,000
Unpaid principal of mortgage loans serviced by FHN		16,000,000,000		16,000,000,000
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	68,500,000		(69,919,000)	0
Transferred To Third Parties [Member]
Participating Mortgage Loans [Line Items]
Total MSR recognized by FHN		12,300,000		12,300,000
Mortgage Banking Income [Member]
Participating Mortgage Loans [Line Items]
Servicing, late, and other ancillary fees		$ 12,300,000	$ 20,700,000	$ 24,400,000