Retirement Benefits (Unaudited)

3 Months Ended

Mar. 31, 2023

Retirement Benefits [Abstract]

RETIREMENT BENEFITS

RETIREMENT BENEFITS

The cost to the company of its pension and other postretirement benefit (OPB) plans is shown in the following table:

	Three Months Ended March 31
	Pension Benefits				OPB
$ in millions	2023		2022		2023		2022
Components of net periodic benefit cost (benefit)
Service cost	$	59	$	92	$	1	$	2
Interest cost	392		284		17		12
Expected return on plan assets	(524)		(660)		(21)		(28)
Net periodic benefit cost (benefit)	$	(73)	$	(284)	$	(3)	$	(14)

Employer Contributions

The company sponsors defined benefit pension and OPB plans, as well as defined contribution plans. We fund our defined benefit pension plans annually in a manner consistent with the Employee Retirement Income Security Act of 1974, as amended by the Pension Protection Act of 2006.

Contributions made by the company to its retirement plans are as follows:

	Three Months Ended March 31
$ in millions	2023		2022
Defined benefit pension plans	$	29	$	26
OPB plans	11		10
Defined contribution plans	215		199