Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2023

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)	2023		2022		2023		2022		2023		2022		2023		2022
Service cost	$	20	$	32	$	8	$	10	$	11	$	17	$	4	$	5
Interest cost	166		104		34		20		83		52		17		10
Expected return on plan assets	(243)		(247)		(4)		(6)		(122)		(124)		(2)		(3)
Amortization:
Net loss	2		48		—		8		1		24		—		4
Prior service cost (credit)	3		3		(20)		(23)		2		1		(10)		(11)
Net periodic benefit cost (income)	$	(52)	$	(60)	$	18	$	9	$	(25)	$	(30)	$	9	$	5