Master Netting and Similar Agreements - Repurchase, Reverse Repurchase, and Securities Borrowing Transactions (Tables)

12 Months Ended

Dec. 31, 2023

Offsetting [Abstract]

Schedule of Securities Purchased Under Agreements To Resell And Collateral Pledged By Counterparties

The following table provides details of securities purchased under agreements to resell and collateral pledged by counterparties as of December 31, 2023 and 2022:

Table 8.22.1

SECURITIES PURCHASED UNDER AGREEMENTS TO RESELL

							Gross amounts not offset in the Balance Sheets
(Dollars in millions)	Gross amounts of recognized assets		Gross amounts offset in the Balance Sheets		Net amounts of assets presented in the Balance Sheets		Offsetting securities sold under agreements to repurchase		Securities collateral (not recognized on FHN’s Balance Sheets)		Net amount
Securities purchased under agreements to resell:
2023	$	519	$	—	$	519	$	—	$	(516)	$	3
2022	353		—		353		(10)		(340)		3

Schedule of Securities Sold Under Agreements To Repurchase And Collateral Pledged By Company

The following table provides details of securities sold under agreements to repurchase and collateral pledged by FHN as of December 31, 2023 and 2022:

Table 8.22.2

SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE

							Gross amounts not offset in the Balance Sheets
(Dollars in millions)	Gross amounts of recognized liabilities		Gross amounts offset in the Balance Sheets		Net amounts of liabilities presented in the Balance Sheets		Offsetting securities purchased under agreements to resell		Securities/ government guaranteed loans collateral		Net amount
Securities sold under agreements to repurchase:
2023	$	1,921	$	—	$	1,921	$	—	$	(1,921)	$	—
2022	1,013		—		1,013		(10)		(1,003)		—

Schedule of the Remaining Contractual Maturity by Collateral Type of Securities Sold Under Agreements To Repurchase

The following table provides details, by collateral type, of the remaining contractual maturity of securities sold under agreements to repurchase as of December 31, 2023 and 2022:

Table 8.22.3

MATURITIES OF SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE

	December 31, 2023
(Dollars in millions)	Overnight and Continuous		Up to 30 Days		Total
Securities sold under agreements to repurchase:
Government agency issued MBS	$	1,717	$	—	$	1,717
Government agency issued CMO	161		—		161
Other U.S. government agencies	43		—		43
Total securities sold under agreements to repurchase	$	1,921	$	—	$	1,921
	December 31, 2022
(Dollars in millions)	Overnight and Continuous		Up to 30 Days		Total
Securities sold under agreements to repurchase:
U.S. treasuries	$	10	$	—	$	10
Government agency issued MBS	851		—		851
Government agency issued CMO	122		—		122
Other U.S. government agencies	30		—		30
Total securities sold under agreements to repurchase	$	1,013	$	—	$	1,013