Consolidated Condensed Statements Of Condition - USD ($)		Sep. 30, 2015		Dec. 31, 2014	Sep. 30, 2014
Assets:
Cash and due from banks		$ 256,342,000		$ 349,171,000	$ 292,687,000
Federal funds sold		64,438,000		63,080,000	55,242,000
Securities purchased under agreements to resell (Note 15)		793,098,000		659,154,000	561,802,000
Total cash and cash equivalents		1,113,878,000		1,071,405,000	909,731,000
Interest-bearing cash		596,689,000		1,621,967,000	275,485,000
Trading securities		1,229,180,000		1,194,391,000	1,338,022,000
Loans held-for-sale		124,308,000	[1]	141,285,000	151,915,000
Securities available-for-sale (Note 3)		3,673,641,000	[2]	3,556,613,000	3,534,671,000	[3]
Securities held-to-maturity (Note 3)		4,313,000		4,292,000	4,286,000
Loans, net of unearned income (Note 4)		16,725,492,000	[4]	16,230,166,000	15,812,017,000
Less: Allowance for loan losses (Note 5)		210,814,000		232,448,000	238,641,000
Total net loans		16,514,678,000		15,997,718,000	15,573,376,000
Goodwill (Note 6)		145,932,000		145,932,000	141,943,000
Other intangible assets, net (Note 6)	[5]	25,624,000		29,518,000	19,044,000
Fixed income receivables		83,547,000		42,488,000	197,507,000
Premises and equipment, net		269,332,000		302,996,000	295,833,000
Real estate acquired by foreclosure		35,332,000	[6]	39,922,000	47,996,000
Derivative assets (Note 14)		152,548,000		134,088,000	137,742,000
Other assets		1,418,317,000		1,385,572,000	1,355,046,000
Total assets		25,387,319,000		25,668,187,000	23,982,597,000
Deposits:
Savings		7,554,338,000		7,455,354,000	6,371,156,000
Time deposits		743,158,000		831,666,000	767,699,000
Other interest-bearing deposits		4,885,601,000		4,140,991,000	3,955,152,000
Certificates of deposit $100,000 and more		290,738,000		445,272,000	446,938,000
Interest-bearing		13,473,835,000		12,873,283,000	11,540,945,000
Noninterest-bearing		5,391,385,000		5,195,656,000	4,603,826,000
Total deposits		18,865,220,000		18,068,939,000	16,144,771,000
Federal funds purchased		520,992,000		1,037,052,000	928,159,000
Securities sold under agreements to repurchase (Note 15)		332,329,000		562,214,000	479,384,000
Trading liabilities		788,563,000		594,314,000	532,234,000
Other short-term borrowings		99,887,000		157,218,000	790,080,000
Term borrowings		1,341,186,000		1,880,105,000	1,491,138,000
Fixed income payables		95,346,000		18,157,000	329,960,000
Derivative liabilities (Note 14)		140,965,000		119,239,000	123,442,000
Other liabilities		622,586,000		649,359,000	551,615,000
Total liabilities		22,807,074,000		23,086,597,000	21,370,783,000
First Horizon National Corporation Shareholders' Equity:
Preferred stock - Series A, non-cumulative perpetual, no par value, liquidation preference of $100,000 per share - (shares authorized - 1,000; shares issued - 1,000 on September 30, 2015, September 30, 2014 and December 31, 2014)		95,624,000		95,624,000	95,624,000
Common stock - $.625 par value (shares authorized - 400,000,000; shares issued - 234,237,439 on September 30, 2015; 235,248,564 on September 30, 2014; and 234,219,663 on December 31, 2014)		146,398,000		146,387,000	147,030,000
Capital surplus		1,377,731,000		1,380,809,000	1,390,081,000
Undivided profits		841,737,000		851,585,000	816,483,000
Accumulated other comprehensive loss, net (Note 8)		(176,676,000)		(188,246,000)	(132,835,000)
Total First Horizon National Corporation Shareholders' Equity		2,284,814,000		2,286,159,000	2,316,383,000
Noncontrolling interest		295,431,000		295,431,000	295,431,000
Total equity		2,580,245,000		2,581,590,000	2,611,814,000
Total liabilities and equity		$ 25,387,319,000		$ 25,668,187,000	$ 23,982,597,000

[1] September 30, 2015 includes $ 21.7 million of held-for-sale consumer mortgage loans secured by residential real estate in process of foreclosure .

[2] Includes $ 2.9 billion of securities pledged to secure public deposits, securities sold under agreements to repurchase, and for other purposes.

[3] Includes $ 3.2 billion of securities pledged to secure public deposits, securities sold under agreements to repu rchase, and for other purposes .

[4] September 30, 2015 includes $30.7 million of held-to-maturity consumer mortgage loans secured by residential real estate in process of foreclosure.

[5] Represents customer lists, acquired contracts, core deposit intangibles, and covenants not to compete.

[6] September 30, 2015 includes $ 15.6 million of foreclosed residential real estate.