Employee Benefit Plans (Tables)

6 Months Ended

Jun. 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 June 30,
Service cost	$	—	$	—	$	21	$	24
Interest cost	146		175		29		28
Expected return on plan assets	(381)		(343)		(9)		(11)
Amortization of prior service credit	—		—		(2)		(2)
Recognized net actuarial loss	88		74		15		10
Settlements	—		3		—		—
Net periodic (benefit) cost	$	(147)	$	(91)	$	54	$	49

Employee benefit plans net periodic (benefit) cost
	Pension Benefits				Other Postretirement and Postemployment Benefits
(in millions)	2021		2020		2021		2020
Six Months Ended June 30,
Service cost	$	—	$	—	$	43	$	48
Interest cost	291		351		59		56
Expected return on plan assets	(761)		(687)		(17)		(22)
Amortization of prior service credit	—		—		(3)		(4)
Recognized net actuarial loss	177		149		27		21
Settlements	—		3		—		—
Net periodic (benefit) cost	$	(293)	$	(184)	$	109	$	99