Employee Benefits (Tables)

6 Months Ended

Jun. 30, 2023

Retirement Benefits [Abstract]

Components of Net Periodic Benefit Cost and Other Amounts Recognized in Accumulated Other Comprehensive Income (Loss)

The components of net periodic benefit cost for the Company’s retirement plans were:

	Three Months Ended June 30												Six Months Ended June 30
	Pension Plans						Postretirement Welfare Plans						Pension Plans						Postretirement Welfare Plans
(Dollars in Millions)	2023			2022			2023			2022			2023			2022			2023			2022
Service cost	$	56		$	68		$	—		$	—		$	112		$	137		$	—		$	—
Interest cost		93			62			1			—			185			123			1			—
Expected return on plan assets		(137	)		(120	)		(1	)		—			(273	)		(239	)		(1	)		—
Prior service cost (credit) amortization		—			—			(1	)		(2	)		(1	)		(1	)		(1	)		(2	)
Actuarial loss (gain) amortization		1			35			(2	)		(1	)		2			70			(4	)		(3	)
Net periodic benefit cost (a)	$	13		$	45		$	(3	)	$	(3	)	$	25		$	90		$	(5	)	$	(5	)

(a) Service cost is included in employee benefits expense on the Consolidated Statement of Income. All other components are included in other noninterest expense on the Consolidated Statement of Income.