Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2024

Retirement Benefits [Abstract]

Schedule of Net Periodic Benefit (Income) Cost

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

	Pension				Postretirement				Pension				Postretirement
	For the Six Months Ended June 30,								For the Three Months Ended June 30,
(in millions)	2024		2023		2024		2023		2024		2023		2024		2023
Service cost	$	21	$	20	$	8	$	8	$	12	$	11	$	4	$	4
Interest cost	161		166		32		34		81		83		16		17
Expected return on plan assets	(233)		(243)		(3)		(4)		(117)		(122)		(2)		(2)
Amortization:
Net loss (gain)	13		2		(2)		—		6		1		(1)		—
Prior service cost (credit)	3		3		(20)		(20)		2		2		(10)		(10)
Net periodic benefit cost (income)	$	(35)	$	(52)	$	15	$	18	$	(16)	$	(25)	$	7	$	9