Pension and Postretirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2021

Pension and Postretirement Benefit Plans

Components of net periodic benefit cost (benefit)

	Three months ended June 30,
	Qualified and Non-qualified
	Pension Benefits								Postretirement
	United States				International				Benefits
(Millions)	2021		2020		2021		2020		2021		2020
Net periodic benefit cost (benefit)
Operating expense
Service cost	$	72	$	65	$	42	$	38	$	11	$	11
Non-operating expense
Interest cost	$	90	$	125	$	25	$	33	$	11	$	16
Expected return on plan assets		(264)		(261)		(82)		(78)		(20)		(20)
Amortization of transition asset		—		—		1		—		—		—
Amortization of prior service benefit		(6)		(6)		(1)		(2)		(8)		(8)
Amortization of net actuarial loss		132		122		27		29		14		11
Settlements, curtailments, special termination benefits and other		—		—		—		—		1		1
Total non-operating expense (benefit)		(48)		(20)		(30)		(18)		(2)		—
Total net periodic benefit cost (benefit)	$	24	$	45	$	12	$	20	$	9	$	11

	Six months ended June 30,
	Qualified and Non-qualified
	Pension Benefits								Postretirement
	United States				International				Benefits
(Millions)	2021		2020		2021		2020		2021		2020
Net periodic benefit cost (benefit)
Operating expense
Service cost	$	144	$	131	$	84	$	76	$	23	$	22
Non-operating expense
Interest cost	$	180	$	249	$	50	$	64	$	22	$	32
Expected return on plan assets		(528)		(523)		(163)		(155)		(39)		(40)
Amortization of transition asset		—		—		1		1		—		—
Amortization of prior service benefit		(12)		(12)		(2)		(3)		(16)		(16)
Amortization of net actuarial loss		264		245		54		57		28		23
Settlements, curtailments, special termination benefits and other		—		—		—		—		2		2
Total non-operating expense (benefit)		(96)		(41)		(60)		(36)		(3)		1
Total net periodic benefit cost (benefit)	$	48	$	90	$	24	$	40	$	20	$	23