Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2021

Retirement Benefits [Abstract]

Schedule of components net periodic (benefit) cost

Employee benefit plans net periodic (benefit) cost
	Pension Benefits				Other Postretirement and Postemployment Benefits
(in millions)	2021		2020		2021		2020
Three Months Ended September 30,
Service cost	$	—	$	—	$	21	$	24
Interest cost	146		175		29		30
Expected return on plan assets	(381)		(343)		(9)		(11)
Amortization of prior service credit	—		—		(2)		(2)
Recognized net actuarial loss	88		74		15		10
Special termination benefits	—		—		—		1,260
Settlements	1		30		—		—
Net periodic (benefit) cost	$	(146)	$	(64)	$	54	$	1,311
Nine Months Ended September 30,
Service cost	$	—	$	—	$	64	$	72
Interest cost	437		526		88		86
Expected return on plan assets	(1,142)		(1,030)		(26)		(33)
Amortization of prior service credit	—		—		(5)		(7)
Recognized net actuarial loss	266		223		42		32
Special termination benefits	—		—		—		1,260
Settlements	1		33		—		—
Net periodic (benefit) cost	$	(438)	$	(248)	$	163	$	1,410