Retirement Benefits (Tables)

3 Months Ended

Mar. 31, 2023

Retirement Benefits [Abstract]

Defined Benefit Plans - Expense

The pre-tax net periodic benefit cost/(income) for our defined benefit pension and OPEB plans for the periods ended March 31 were as follows (in millions):

	First Quarter
	Pension Benefits
	U.S. Plans				Non-U.S. Plans				Worldwide OPEB
	2022		2023		2022		2023		2022		2023
Service cost	$	125	$	72	$	111	$	61	$	10	$	5
Interest cost	263		408		134		237		37		58
Expected return on assets	(642)		(486)		(268)		(219)		—		—
Amortization of prior service costs/(credits)	—		—		7		5		(1)		1
Net remeasurement (gain)/loss	—		113		—		—		—		—
Separation programs/other	4		2		7		4		—		—
Settlements and curtailments	—		42		—		—		—		—
Net periodic benefit cost/(income)	$	(250)	$	151	$	(9)	$	88	$	46	$	64