Pension Benefits (Tables) - Pension

12 Months Ended

Dec. 31, 2016

Defined Benefit Plan Disclosure [Line Items]

Components of Company Plan Benefit Expense [Table Text Block]

(millions)	2016			2015
Change in projected benefit obligation
Beginning of year	$	5,316		$	5,570
Service cost	98			114
Interest cost	174			206
Plan participants’ contributions	1			2
Amendments	5			25
Actuarial (gain)loss	404			(191		)
Benefits paid	(299		)	(262		)
Curtailment and special termination benefits	(1		)	(2		)
Other	2			4
Foreign currency adjustments	(190		)	(150		)
End of year	$	5,510		$	5,316
Change in plan assets
Fair value beginning of year	$	4,584		$	5,028
Actual return on plan assets	415			(102		)
Employer contributions	18			19
Plan participants’ contributions	1			2
Benefits paid	(268		)	(235		)
Other	2			4
Foreign currency adjustments	(208		)	(132		)
Fair value end of year	$	4,544		$	4,584
Funded status	$	(966	)	$	(732	)
Amounts recognized in the Consolidated Balance Sheet consist of
Other assets	$	66		$	231
Other current liabilities	(11		)	(17		)
Other liabilities	(1,021		)	(946		)
Net amount recognized	$	(966	)	$	(732	)
Amounts recognized in accumulated other comprehensive income consist of
Prior service cost	$	56		$	67
Net amount recognized	$	56		$	67

Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block]

(millions)	2016		2015
Projected benefit obligation	$	3,940	$	3,769
Accumulated benefit obligation	$	3,737	$	3,574
Fair value of plan assets	$	2,938	$	2,835

Schedule of Net Benefit Costs [Table Text Block]

(millions)	2016			2015			2014
Service cost	$	98		$	114		$	106
Interest cost	174			206			225
Expected return on plan assets	(352		)	(399		)	(415		)
Amortization of unrecognized prior service cost	13			13			14
Recognized net (gain)loss	323			303			782
Curtailment and special termination benefits	1			(1		)	4
Pension (income)expense:
Defined benefit plans	257			236			716
Defined contribution plans	36			40			36
Total	$	293		$	276		$	752

Schedule of Assumptions Used [Table Text Block]

	2016		2015		2014
Discount rate	3.6	%	4.1	%	3.9	%
Long-term rate of compensation increase	3.9	%	3.9	%	4.0	%

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

	2016		2015		2014
Discount rate	4.1	%	3.9	%	4.7	%
Long-term rate of compensation increase	3.9	%	4.0	%	4.1	%
Long-term rate of return on plan assets	8.1	%	8.3	%	8.5	%

Schedule of Allocation of Plan Assets [Table Text Block]

(millions)	Total Level 1		Total Level 2		Total Level 3		Total NAV (practical expedient)(a)		67	Total
Cash and cash equivalents	$	54	$	12	$	—	$	—		$	66
Corporate stock, common:
Domestic	482		—		—		—			482
International	31		1		—		—			32
Mutual funds:
International equity	—		116		—		32			148
Domestic debt	—		24		—		42			66
Collective trusts:
Domestic equity	—		—		—		653			653
International equity	—		138		—		1,112			1,250
Other international debt	—		—		—		310			310
Limited partnerships	—		—		—		485			485
Bonds, corporate	—		452		—		—			452
Bonds, government	—		158		—		—			158
Bonds, other	—		41		—		—			41
Buy-in annuity contract	—		—		131		—			131
Real estate	—		—		—		117			117
Other	—		96		—		57			153
Total	$	567	$	1,038	$	131	$	2,808		$	4,544

(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	$	83	$	8	$	—	$	—	$	91
Corporate stock, common:
Domestic	608		—		—		—		608
International	109		—		—		—		109
Mutual funds:
International equity	—		331		—		33		364
Domestic debt	—		24		—		53		77
Collective trusts:
Domestic equity	—		—		—		411		411
International equity	—		181		—		949		1,130
Eurozone sovereign debt	—		—		—		10		10
Other international debt	—		—		—		368		368
Limited partnerships	—		—		—		455		455
Bonds, corporate	—		419		—		—		419
Bonds, government	—		157		—		—		157
Bonds, other	—		49		—		—		49
Buy-in annuity contract	—		—		135		—		135
Real estate	—		—		—		135		135
Other	—		5		6		55		66
Total	$	800	$	1,174	$	141	$	2,469	$	4,584

(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.

Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets [Table Text Block]

(millions)	Buy-in Annuity Contract			Other			Total
January 3, 2015	—			$	8		$	8
Sales	—			(3		)	(3		)
Purchases	135			3			138
Realized and unrealized gain	—			(1		)	(1		)
Currency translation	—			(1		)	(1		)
January 2, 2016	$	135		$	6		$	141
Sales	—			(3		)	(3		)
Purchases	—			—			—
Transfers	—			(3		)	(3		)
Realized and unrealized gain	(7		)	—			(7		)
Currency translation	3			—			3
December 31, 2016	$	131		$	—		$	131