Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2024

Retirement Benefits [Abstract]

Schedule of Net Periodic Benefit (Income) Cost

Net periodic benefit cost (income) consisted of the following:

	Pension				Postretirement
	For the Three Months Ended March 31,
(in millions)	2024		2023		2024		2023
Service cost	$	9	$	9	$	4	$	4
Interest cost	80		83		16		17
Expected return on plan assets	(116)		(121)		(1)		(2)
Amortization:
Net loss (gain)	7		1		(1)		—
Prior service cost (credit)	1		1		(10)		(10)
Net periodic benefit cost (income)	$	(19)	$	(27)	$	8	$	9