Pension and Postretirement Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2017

Pension and Postretirement Benefit Plans

Components of net periodic benefit cost (benefit)

Benefit Plan Information

	Three months ended September 30,
	Qualified and Non-qualified
	Pension Benefits								Postretirement
	United States				International				Benefits
(Millions)	2017		2016		2017		2016		2017		2016
Net periodic benefit cost (benefit)
Service cost	$	67	$	64	$	33	$	35	$	13	$	13
Interest cost		141		144		38		45		20		20
Expected return on plan assets		(259)		(261)		(69)		(78)		(21)		(23)
Amortization of transition (asset) obligation		—		—		—		—		—		—
Amortization of prior service cost (benefit)		(5)		(6)		(3)		(3)		(13)		(13)
Amortization of net actuarial (gain) loss		97		89		29		21		14		15
Settlements, curtailments, special termination benefits and other		—		—		—		—		—		—
Net periodic benefit cost (benefit) after settlements, curtailments, special termination benefits and other	$	41	$	30	$	28	$	20	$	13	$	12

	Nine months ended September 30,
	Qualified and Non-qualified
	Pension Benefits								Postretirement
	United States				International				Benefits
(Millions)	2017		2016		2017		2016		2017		2016
Net periodic benefit cost (benefit)
Service cost	$	201	$	194	$	100	$	102	$	38	$	40
Interest cost		425		431		112		131		59		59
Expected return on plan assets		(777)		(782)		(208)		(234)		(63)		(68)
Amortization of transition (asset) obligation		—		—		—		(1)		—		—
Amortization of prior service cost (benefit)		(17)		(18)		(9)		(10)		(39)		(41)
Amortization of net actuarial (gain) loss		291		265		89		66		42		46
Settlements, curtailments, special termination benefits and other		—		—		—		—		—		—
Net periodic benefit cost (benefit) after settlements, curtailments, special termination benefits and other	$	123	$	90	$	84	$	54	$	37	$	36