CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Millions	Total	Preferred Stock	Common Stock	Capital Surplus	Retained Earnings	Accumulated Other Comprehensive Income (Loss)		Noncontrolling Interest	Preferred Stock	Series G	Series G Common Stock	Series G Capital Surplus
Preferred stock, balance, beginning of period (in shares) at Dec. 31, 2021		26,750,000
Common stock, balance, beginning of period (in shares) at Dec. 31, 2021			533,577,000
Balance, beginning of period at Dec. 31, 2021	$ 8,494	$ 520	$ 333	$ 4,743	$ 2,891	$ (288)	[1]	$ 295
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	198				195			3
Other comprehensive income (loss)	(423)					(423)	[1]
Cash dividends declared:
Preferred stock	(8)				(8)
Common stock	(82)				(82)
Preferred stock issuance (in shares)		4,936,000
Preferred stock issuance	494	$ 494
Common stock repurchased (in shares)			(120,000)
Common stock repurchased	(2)			(2)
Common stock issued for:
Stock options exercised and restricted stock awards (in shares)			1,130,000
Stock options exercised and restricted stock awards	15		$ 1	14
Stock-based compensation expense	14			14
Dividends declared - noncontrolling interest of subsidiary preferred stock	(3)							(3)
Preferred stock, balance, ending of period (in shares) at Mar. 31, 2022		31,686,000
Common stock, balance, ending of period (in shares) at Mar. 31, 2022			534,587,000
Balance, end of period at Mar. 31, 2022	8,697	$ 1,014	$ 334	4,769	2,996	(711)	[1]	295
Preferred stock, balance, beginning of period (in shares) at Dec. 31, 2021		26,750,000
Common stock, balance, beginning of period (in shares) at Dec. 31, 2021			533,577,000
Balance, beginning of period at Dec. 31, 2021	8,494	$ 520	$ 333	4,743	2,891	(288)	[1]	295
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	642
Other comprehensive income (loss)	(1,139)
Cash dividends declared:
Preferred stock	(24)
Common stock issued for:
Series G preferred stock conversion	0
Preferred stock, balance, ending of period (in shares) at Sep. 30, 2022		31,686,000
Common stock, balance, ending of period (in shares) at Sep. 30, 2022			536,737,000
Balance, end of period at Sep. 30, 2022	8,283	$ 1,014	$ 335	4,812	3,254	(1,427)	[1]	295
Preferred stock, balance, beginning of period (in shares) at Dec. 31, 2021		26,750,000
Common stock, balance, beginning of period (in shares) at Dec. 31, 2021			533,577,000
Balance, beginning of period at Dec. 31, 2021	8,494	$ 520	$ 333	4,743	2,891	(288)	[1]	295
Preferred stock, balance, ending of period (in shares) at Dec. 31, 2022		31,686,000
Common stock, balance, ending of period (in shares) at Dec. 31, 2022			537,101,000
Balance, end of period at Dec. 31, 2022	8,547	$ 1,014	$ 336	4,840	3,430	(1,368)	[2]	295
Balance, end of period (Accounting Standards Update 2022-02) at Dec. 31, 2022	$ 4				4
Common stock issued for:
Accounting Standards Update [Extensible List]	Accounting Standards Update 2022-02
Preferred stock, balance, beginning of period (in shares) at Mar. 31, 2022		31,686,000
Common stock, balance, beginning of period (in shares) at Mar. 31, 2022			534,587,000
Balance, beginning of period at Mar. 31, 2022	$ 8,697	$ 1,014	$ 334	4,769	2,996	(711)	[1]	295
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	177				174			3
Other comprehensive income (loss)	(252)					(252)	[1]
Cash dividends declared:
Preferred stock	(8)				(8)
Common stock	(83)				(83)
Common stock repurchased (in shares)			(334,000)
Common stock repurchased	(8)		$ (1)	(7)
Common stock issued for:
Stock options exercised and restricted stock awards (in shares)			2,080,000
Stock options exercised and restricted stock awards	13		$ 2	11
Stock-based compensation expense	18			18
Dividends declared - noncontrolling interest of subsidiary preferred stock	(3)							(3)
Preferred stock, balance, ending of period (in shares) at Jun. 30, 2022		31,686,000
Common stock, balance, ending of period (in shares) at Jun. 30, 2022			536,333,000
Balance, end of period at Jun. 30, 2022	8,551	$ 1,014	$ 335	4,791	3,079	(963)	[1]	295
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	268				265			3
Other comprehensive income (loss)	(464)					(464)	[1]
Cash dividends declared:
Preferred stock	(8)				(8)
Common stock	(82)				(82)
Common stock repurchased (in shares)			(103,000)
Common stock repurchased	(3)			(3)
Common stock issued for:
Stock options exercised and restricted stock awards (in shares)			507,000
Stock options exercised and restricted stock awards	3			3
Stock-based compensation expense	21			21
Dividends declared - noncontrolling interest of subsidiary preferred stock	(3)							(3)
Preferred stock, balance, ending of period (in shares) at Sep. 30, 2022		31,686,000
Common stock, balance, ending of period (in shares) at Sep. 30, 2022			536,737,000
Balance, end of period at Sep. 30, 2022	8,283	$ 1,014	$ 335	4,812	3,254	(1,427)	[1]	295
Preferred stock, balance, beginning of period (in shares) at Dec. 31, 2022		31,686,000
Common stock, balance, beginning of period (in shares) at Dec. 31, 2022			537,101,000
Balance, beginning of period at Dec. 31, 2022	8,547	$ 1,014	$ 336	4,840	3,430	(1,368)	[2]	295
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	255				251			4
Other comprehensive income (loss)	160					160	[2]
Cash dividends declared:
Preferred stock	(8)				(8)
Common stock	(82)				(82)
Common stock repurchased (in shares)			(159,000)
Common stock repurchased	(4)			(4)
Common stock issued for:
Stock options exercised and restricted stock awards (in shares)			677,000
Stock options exercised and restricted stock awards	5			5
Stock-based compensation expense	22			22
Dividends declared - noncontrolling interest of subsidiary preferred stock	(4)							(4)
Preferred stock, balance, ending of period (in shares) at Mar. 31, 2023		31,686,000
Common stock, balance, ending of period (in shares) at Mar. 31, 2023			537,619,000
Balance, end of period at Mar. 31, 2023	8,895	$ 1,014	$ 336	4,863	3,595	(1,208)	[2]	295
Preferred stock, balance, beginning of period (in shares) at Dec. 31, 2022		31,686,000
Common stock, balance, beginning of period (in shares) at Dec. 31, 2022			537,101,000
Balance, beginning of period at Dec. 31, 2022	8,547	$ 1,014	$ 336	4,840	3,430	(1,368)	[2]	295
Balance, beginning of period (Accounting Standards Update 2022-02) at Dec. 31, 2022	4				4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	727
Other comprehensive income (loss)	(214)
Cash dividends declared:
Preferred stock	(24)
Common stock issued for:
Series G preferred stock conversion	$ 493
Preferred stock, balance, ending of period (in shares) at Sep. 30, 2023	26,750	26,750,000								0
Common stock, balance, ending of period (in shares) at Sep. 30, 2023			558,709,000
Balance, end of period at Sep. 30, 2023	$ 8,793	$ 520	$ 349	5,337	3,874	(1,582)	[2]	295
Preferred stock, balance, beginning of period (in shares) at Mar. 31, 2023		31,686,000
Common stock, balance, beginning of period (in shares) at Mar. 31, 2023			537,619,000
Balance, beginning of period at Mar. 31, 2023	8,895	$ 1,014	$ 336	4,863	3,595	(1,208)	[2]	295
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	329				325			4
Other comprehensive income (loss)	(151)					(151)	[2]
Cash dividends declared:
Preferred stock	(8)				(8)
Common stock	(82)				(82)
Preferred stock conversion (in shares)									(4,936,000)
Preferred stock conversion	(494)								$ (494)
Common stock repurchased (in shares)			(575,000)
Common stock repurchased	(5)		$ 0	(5)
Common stock issued for:
Stock options exercised and restricted stock awards (in shares)			1,872,000
Stock options exercised and restricted stock awards	0
Series G preferred stock conversion to common stock (in shares)											19,743,000
Series G preferred stock conversion										$ 493	$ 12	$ 481
Stock-based compensation expense	(13)		$ 1	(14)
Dividends declared - noncontrolling interest of subsidiary preferred stock	(4)							(4)
Preferred stock, balance, ending of period (in shares) at Jun. 30, 2023		26,750,000
Common stock, balance, ending of period (in shares) at Jun. 30, 2023			558,659,000
Balance, end of period at Jun. 30, 2023	8,960	$ 520	$ 349	5,325	3,830	(1,359)	[2]	295
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	142				137			5
Other comprehensive income (loss)	(223)					(223)	[2]
Cash dividends declared:
Preferred stock	(8)				(8)
Common stock	(85)				(85)
Common stock repurchased (in shares)			(17,000)
Common stock repurchased	0
Common stock issued for:
Stock options exercised and restricted stock awards (in shares)			67,000
Stock options exercised and restricted stock awards	0
Stock-based compensation expense	12			12
Dividends declared - noncontrolling interest of subsidiary preferred stock	$ (5)							(5)
Preferred stock, balance, ending of period (in shares) at Sep. 30, 2023	26,750	26,750,000								0
Common stock, balance, ending of period (in shares) at Sep. 30, 2023			558,709,000
Balance, end of period at Sep. 30, 2023	$ 8,793	$ 520	$ 349	$ 5,337	$ 3,874	$ (1,582)	[2]	$ 295

[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.