CONSOLIDATED CONDENSED STATEMENTS OF EQUITY - USD ($) $ in Thousands		Total	Common Stock	Preferred Stock	Capital Surplus	Undivided Profits	Accumulated Other Comprehensive Income/(Loss)		Noncontrolling Interest
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adjustment to reflect adoption of ASU							$ (211)
Adjustment to reflect adoption of ASU | Accounting Standards Update 2018-02						$ 57,546	(57,546)	[1]
Balance, adjusted		$ 4,580,488	$ 204,211	$ 95,624	$ 3,147,613	1,160,434	(322,825)	[1]	$ 295,431
Balance, beginning of period (in shares) at Dec. 31, 2017			326,736,000
Balance, beginning of period at Dec. 31, 2017		4,580,488	$ 204,211	95,624	3,147,613	1,102,888	(265,279)	[1]	295,431
Beginning balance, as adjusted at Dec. 31, 2017							(323,036)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income/(loss)		94,994				92,174			2,820
Other comprehensive income/(loss)		(67,049)					(67,049)	[1]
Comprehensive income/(loss)		27,945				92,174	(67,049)	[1]	2,820
Cash dividends declared:
Preferred stock		(1,550)				(1,550)
Common stock		(39,681)				(39,681)
Common stock repurchased (in shares)			(110,000)
Common stock repurchased		(2,185)	$ (70)		(2,115)
Common stock issued for:
Stock options and restricted stock - equity awards (in shares)			569,000
Stock options and restricted stock - equity awards		4,376	$ 356		4,020
Acquisition equity adjustment (in shares)			(1,000)
Acquisition equity adjustment		(18)	$ (1)		(17)
Stock-based compensation expense		5,906			5,906
Dividends declared - noncontrolling interest of subsidiary preferred stock		(2,820)							(2,820)
Balance, end of period (in shares) at Mar. 31, 2018			327,194,000
Balance, end of period at Mar. 31, 2018		4,572,528	$ 204,496	95,624	3,155,407	1,211,655	(390,085)	[2]	295,431
Balance, beginning of period (in shares) at Dec. 31, 2017			326,736,000
Balance, beginning of period at Dec. 31, 2017		4,580,488	$ 204,211	95,624	3,147,613	1,102,888	(265,279)	[1]	295,431
Beginning balance, as adjusted at Dec. 31, 2017							(323,036)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income/(loss)		180,986
Other comprehensive income/(loss)		(89,078)
Comprehensive income/(loss)		91,908
Cash dividends declared:
Preferred stock		(3,100)
Balance, end of period (in shares) at Jun. 30, 2018			325,003,000
Balance, end of period at Jun. 30, 2018		4,549,749	$ 203,127	95,624	3,113,612	1,254,069	(412,114)	[2]	295,431
Balance, beginning of period (in shares) at Mar. 31, 2018			327,194,000
Balance, beginning of period at Mar. 31, 2018		4,572,528	$ 204,496	95,624	3,155,407	1,211,655	(390,085)	[2]	295,431
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income/(loss)		85,992				83,140			2,852
Other comprehensive income/(loss)		(22,029)					(22,029)	[2]
Comprehensive income/(loss)		63,963				83,140	(22,029)	[2]	2,852
Cash dividends declared:
Preferred stock		(1,550)				(1,550)
Common stock		(39,176)				(39,176)
Common stock repurchased (in shares)			(138,000)
Common stock repurchased		(2,606)	$ (86)		(2,520)
Common stock issued for:
Stock options and restricted stock - equity awards (in shares)			328,000
Stock options and restricted stock - equity awards		45	$ 205		(160)
Acquisition equity adjustment (in shares)			(2,374,000)
Acquisition equity adjustment		(46,017)	$ (1,483)		(44,534)
Stock-based compensation expense		5,547			5,547
Dividends declared - noncontrolling interest of subsidiary preferred stock		(2,852)							(2,852)
Other (in shares)			(7,000)
Other		(133)	$ (5)		(128)
Balance, end of period (in shares) at Jun. 30, 2018			325,003,000
Balance, end of period at Jun. 30, 2018		4,549,749	$ 203,127	95,624	3,113,612	1,254,069	(412,114)	[2]	295,431
Balance, beginning of period (in shares) at Dec. 31, 2018			318,573,000
Balance, beginning of period at Dec. 31, 2018		4,785,380	$ 199,108	95,624	3,029,425	1,542,408	(376,616)	[2]	295,431
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income/(loss)		103,405				100,585			2,820
Other comprehensive income/(loss)		55,465					55,465	[2]
Comprehensive income/(loss)		158,870				100,585	55,465	[2]	2,820
Cash dividends declared:
Preferred stock		(1,550)				(1,550)
Common stock		(44,864)				(44,864)
Common stock repurchased (in shares)	[3]		(3,594,000)
Common stock repurchased	[3]	(53,436)	$ (2,246)		(51,190)
Common stock issued for:
Stock options and restricted stock - equity awards (in shares)			382,000
Stock options and restricted stock - equity awards		520	$ 239		281
Stock-based compensation expense		5,432			5,432
Dividends declared - noncontrolling interest of subsidiary preferred stock		(2,820)							(2,820)
Balance, end of period (in shares) at Mar. 31, 2019			315,361,000
Balance, end of period at Mar. 31, 2019		4,846,521	$ 197,101	95,624	2,983,948	1,595,568	(321,151)	[2]	295,431
Balance, beginning of period (in shares) at Dec. 31, 2018			318,573,000
Balance, beginning of period at Dec. 31, 2018		4,785,380	$ 199,108	95,624	3,029,425	1,542,408	(376,616)	[2]	295,431
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income/(loss)		217,147
Other comprehensive income/(loss)		114,127
Comprehensive income/(loss)		331,274
Cash dividends declared:
Preferred stock		(3,100)
Balance, end of period (in shares) at Jun. 30, 2019			312,478,000
Balance, end of period at Jun. 30, 2019		4,926,081	$ 195,299	95,624	2,941,696	1,660,520	(262,489)	[2]	295,431
Balance, beginning of period (in shares) at Mar. 31, 2019			315,361,000
Balance, beginning of period at Mar. 31, 2019		4,846,521	$ 197,101	95,624	2,983,948	1,595,568	(321,151)	[2]	295,431
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income/(loss)		113,742				110,890			2,852
Other comprehensive income/(loss)		58,662					58,662	[2]
Comprehensive income/(loss)		172,404				110,890	58,662	[2]	2,852
Cash dividends declared:
Preferred stock		(1,550)				(1,550)
Common stock		(44,388)				(44,388)
Common stock repurchased (in shares)	[3]		(3,654,000)
Common stock repurchased	[3]	(52,222)	$ (2,284)		(49,938)
Common stock issued for:
Stock options and restricted stock - equity awards (in shares)			771,000
Stock options and restricted stock - equity awards		2,944	$ 482		2,462
Stock-based compensation expense		5,224			5,224
Dividends declared - noncontrolling interest of subsidiary preferred stock		(2,852)							(2,852)
Balance, end of period (in shares) at Jun. 30, 2019			312,478,000
Balance, end of period at Jun. 30, 2019		$ 4,926,081	$ 195,299	$ 95,624	$ 2,941,696	$ 1,660,520	$ (262,489)	[2]	$ 295,431

[1] Due to the nature of the preferred stock issued by FHN and its subsidiaries, all components of Other comprehensive income/(loss) have been attributed solely to FHN as the controlling interest holder.

[2] Due to the nature of the preferred stock issued by FHN and its subsidiaries, all components of Other comprehensive income/(loss) have been attributed solely to FHN as the controlling interest holder.

[3] Includes $51.5 million and $50.2 million repurchased under share repurchase programs in first and second quarter 2019, respectively.