Nonpension Postretirement and Postemployment Benefits (Tables)

12 Months Ended

Dec. 31, 2016

Nonpension Postretirement [Member]

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

(millions)	2016			2015
Change in accumulated benefit obligation
Beginning of year	$	1,163		$	1,288
Service cost	21			29
Interest cost	39			48
Actuarial (gain) loss	2			(53		)
Benefits paid	(65		)	(57		)
Curtailments	—			—
Amendments	—			(84		)
Foreign currency adjustments	1			(8		)
End of year	$	1,161		$	1,163
Change in plan assets
Fair value beginning of year	$	1,084		$	1,204
Actual return on plan assets	111			(65		)
Employer contributions	15			14
Benefits paid	(74		)	(69		)
Fair value end of year	$	1,136		$	1,084
Funded status	$	(25	)	$	(79	)
Amounts recognized in the Consolidated Balance Sheet consist of
Other non-current assets	$	17		$	—
Other current liabilities	(2		)	(2		)
Other liabilities	(40		)	(77		)
Net amount recognized	$	(25	)	$	(79	)
Amounts recognized in accumulated other comprehensive income consist of
Prior service credit	(86		)	(95		)
Net amount recognized	$	(86	)	$	(95	)

Schedule of Net Benefit Costs [Table Text Block]

(millions)	2016			2015			2014
Service cost	$	21		$	29		$	28
Interest cost	39			48			55
Expected return on plan assets	(90		)	(100		)	(98		)
Amortization of unrecognized prior service credit	(9		)	(5		)	(3		)
Recognized net (gain) loss	(19		)	112			133
Curtailment	—			—			(28		)
Postretirement benefit expense:
Defined benefit plans	(58		)	84			87
Defined contribution plans	17			14			14
Total	$	(41	)	$	98		$	101

Schedule of Assumptions Used [Table Text Block]

	2016		2015		2014
Discount rate	4.0	%	4.2	%	4.0	%

The weighted-average actuarial assumptions used to determine annual net periodic benefit cost were:

	2016		2015		2014
Discount rate	4.2	%	4.0	%	4.8	%
Long-term rate of return on plan assets	8.5	%	8.5	%	8.5	%

Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates [Table Text Block]

(millions)	One percentage point increase		One percentage point decrease
Effect on total of service and interest cost components	$	7	$	(4	)
Effect on postretirement benefit obligation	111		(77		)

Schedule of Allocation of Plan Assets [Table Text Block]

(millions)	Total Level 1		Total Level 2		Total Level 3		Total NAV (practical expedient)(a)		Total
Cash and cash equivalents	$	4	$	6	$	—	$	—	$	10
Corporate stock, common:
Domestic	143		—		—		—		143
International	6		1		—		—		7
Mutual funds:
Domestic equity	—		57		—		—		57
International equity	—		30		—		—		30
Domestic debt	—		53		—		—		53
Collective trusts:
Domestic equity	—		—		—		272		272
International equity	—		—		—		210		210
Limited partnerships	—		—		—		177		177
Bonds, corporate	—		117		—		—		117
Bonds, government	—		48		—		—		48
Bonds, other	—		10		—		—		10
Other	—		2		—		—		2
Total	$	153	$	324	$	—	$	659	$	1,136

(a) Certain assets that are measured at fair value using the NAV per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy.

The fair value of Plan assets at January 2, 2016 are summarized as follows:

(millions)	Total Level 1		Total Level 2		Total Level 3		Total NAV (practical expedient)(a)		Total
Cash and cash equivalents	$	9	$	13	$	—	$	—	$	22
Corporate stock, common:
Domestic	195		—		—		—		195
International	5		—		—		—		5
Mutual funds:
Domestic equity	—		52		—		—		52
International equity	—		111		—		—		111
Domestic debt	—		54		—		—		54
Collective trusts:
Domestic equity	—		—		—		150		150
International equity	—		—		—		148		148
Limited partnerships	—		—		—		166		166
Bonds, corporate	—		120		—		—		120
Bonds, government	—		48		—		—		48
Bonds, other	—		12		—		—		12
Other	—		1		—		—		1
Total	$	209	$	411	$	—	$	464	$	1,084

Postemployment [Member]

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

(millions)	2016			2015
Change in accumulated benefit obligation
Beginning of year	$	108		$	104
Service cost	7			7
Interest cost	3			4
Actuarial (gain)loss	(25		)	—
Benefits paid	(6		)	(6		)
Amendments	—			—
Foreign currency adjustments	—			(1		)
End of year	$	87		$	108
Funded status	$	(87	)	$	(108	)
Amounts recognized in the Consolidated Balance Sheet consist of
Other current liabilities	$	(8	)	$	(8	)
Other liabilities	(79		)	(100		)
Net amount recognized	$	(87	)	$	(108	)
Amounts recognized in accumulated other comprehensive income consist of
Net prior service cost	$	6		$	6
Net experience loss	(1		)	27
Net amount recognized	$	5		$	33

Schedule of Net Benefit Costs [Table Text Block]

(millions)	2016		2015		2014
Service cost	$	7	$	7	$	7
Interest cost	3		4		4
Amortization of unrecognized prior service cost	1		1		—
Recognized net loss	3		3		3
Postemployment benefit expense	$	14	$	15	$	14

Schedule of Expected Benefit Payments [Table Text Block]

(millions)	Postretirement		Postemployment
2017	$	73	$	9
2018	73		7
2019	73		7
2020	73		7
2021	74		7
2022-2026	387		37