CONSOLIDATED CONDENSED STATEMENTS OF EQUITY - USD ($) $ in Thousands		Total	Controlling Interest	Noncontrolling Interest
Balance, January 1 at Dec. 31, 2016		$ 2,705,084	$ 2,409,653	$ 295,431
Adjustment to reflect adoption of ASU 2017-12 at Dec. 31, 2016		0	0	0
Beginning balance, as adjusted at Dec. 31, 2016		2,705,084	2,409,653	295,431
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income/(loss)		58,388	55,568	2,820
Other comprehensive income/(loss)	[1]	(2,304)	(2,304)	0
Comprehensive income/(loss)		56,084	53,264	2,820
Cash dividends declared:
Preferred stock ($1,550 per share for the three months ended March 31, 2018 and 2017)		(1,550)	(1,550)	0
Common stock ($.12 and $.09 per share for the three months ended March 31, 2018 and 2017, respectively)		(21,354)	(21,354)	0
Common stock repurchased		(2,016)	(2,016)	0
Common stock issued for:
Stock options and restricted stock - equity awards		2,003	2,003	0
Equity acquisition adjustment		0	0	0
Stock-based compensation expense		5,029	5,029	0
Dividends declared - noncontrolling interest of subsidiary preferred stock		(2,820)	0	(2,820)
Balance, March 31 at Mar. 31, 2017		2,740,460	2,445,029	295,431
Balance, January 1 at Dec. 31, 2017		4,580,488	4,285,057	295,431
Adjustment to reflect adoption of ASU 2017-12 at Dec. 31, 2017		67	67	0
Beginning balance, as adjusted at Dec. 31, 2017		4,580,555	4,285,124	295,431
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income/(loss)		94,994	92,174	2,820
Other comprehensive income/(loss)	[1]	(67,049)	(67,049)	0
Comprehensive income/(loss)		27,945	25,125	2,820
Cash dividends declared:
Preferred stock ($1,550 per share for the three months ended March 31, 2018 and 2017)		(1,550)	(1,550)	0
Common stock ($.12 and $.09 per share for the three months ended March 31, 2018 and 2017, respectively)		(39,680)	(39,680)	0
Common stock repurchased		(2,185)	(2,185)	0
Common stock issued for:
Stock options and restricted stock - equity awards		4,375	4,375	0
Equity acquisition adjustment		(18)	(18)	0
Stock-based compensation expense		5,906	5,906	0
Dividends declared - noncontrolling interest of subsidiary preferred stock		(2,820)	0	(2,820)
Balance, March 31 at Mar. 31, 2018		$ 4,572,528	$ 4,277,097	$ 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.