Pension and Postretirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2017

Pension and Postretirement Benefit Plans

Components of net periodic benefit cost (benefit)

Benefit Plan Information

	Three months ended June 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	$	65	$	34	$	34	$	12	$	14
Interest cost		142		144		37		43		20		19
Expected return on plan assets		(259)		(261)		(70)		(78)		(21)		(22)
Amortization of transition (asset) obligation		—		—		—		(1)		—		—
Amortization of prior service cost (benefit)		(6)		(6)		(3)		(4)		(13)		(14)
Amortization of net actuarial (gain) loss		97		88		30		23		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	$	17	$	12	$	12

	Six months ended June 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	$	134	$	130	$	67	$	67	$	25	$	27
Interest cost		284		287		74		86		39		39
Expected return on plan assets		(518)		(521)		(139)		(156)		(42)		(45)
Amortization of transition (asset) obligation		—		—		—		(1)		—		—
Amortization of prior service cost (benefit)		(12)		(12)		(6)		(7)		(26)		(28)
Amortization of net actuarial (gain) loss		194		176		60		45		28		31
Settlements, curtailments, special termination benefits and other		—		—		—		—		—		—
Net periodic benefit cost (benefit) after settlements, curtailments, special termination benefits and other	$	82	$	60	$	56	$	34	$	24	$	24