Pension and Postretirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2019

Defined Benefit Plans and Other 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)	2019		2018		2019		2018		2019		2018
Net periodic benefit cost (benefit)
Operating expense
Service cost	$	63	$	72	$	33	$	37	$	11	$	13
Non-operating expense
Interest cost	$	156	$	141	$	39	$	40	$	21	$	20
Expected return on plan assets		(260)		(272)		(75)		(79)		(21)		(21)
Amortization of prior service benefit		(6)		(6)		(3)		(3)		(7)		(10)
Amortization of net actuarial loss		92		126		19		29		8		15
Settlements, curtailments, special termination benefits and other		35		—		1		—		—		—
Total non-operating expense (benefit)		17		(11)		(19)		(13)		1		4
Total net periodic benefit cost (benefit)	$	80	$	61	$	14	$	24	$	12	$	17

	Six months ended June 30,
	Qualified and Non-qualified
	Pension Benefits								Postretirement
	United States				International				Benefits
(Millions)	2019		2018		2019		2018		2019		2018
Net periodic benefit cost (benefit)
Operating expense
Service cost	$	125	$	144	$	66	$	73	$	22	$	26
Non-operating expense
Interest cost	$	311	$	282	$	78	$	80	$	42	$	40
Expected return on plan assets		(520)		(544)		(150)		(157)		(41)		(42)
Amortization of prior service benefit		(12)		(12)		(6)		(6)		(14)		(20)
Amortization of net actuarial loss		183		252		39		58		17		30
Settlements, curtailments, special termination benefits and other		35		—		1		—		—		—
Total non-operating expense (benefit)		(3)		(22)		(38)		(25)		4		8
Total net periodic benefit cost (benefit)	$	122	$	122	$	28	$	48	$	26	$	34