Postemployment Benefits (Tables)

12 Months Ended

Dec. 29, 2018

Defined Benefit Plan Disclosure [Line Items]

Accumulated Other Comprehensive Income/(Losses)

Our accumulated other comprehensive income/(losses) pension and postretirement benefit plans balances, before tax, consisted of the following (in millions):

	Pension Benefits					Postretirement Benefits				Total
	December 29, 2018			December 30, 2017		December 29, 2018		December 30, 2017		December 29, 2018		December 30, 2017
Net actuarial gain/(loss)	$	175		$	13	$	177	$	111	$	352	$	124
Prior service credit/(cost)	(14		)	1		458		748		444		749
	$	161		$	14	$	635	$	859	$	796	$	873

Amounts Recognized in Other Comprehensive Income (Loss)

The net postemployment benefits recognized in other comprehensive income/(loss), consisted of the following (in millions):

							As Restated
	December 29, 2018			December 30, 2017			December 31, 2016
Net postemployment benefit gains/(losses) arising during the period:
Net actuarial gains/(losses) arising during the period - Pension Benefits	$	8		$	45		$	(73	)
Net actuarial gains/(losses) arising during the period - Postretirement Benefits	66			71			(5		)
Prior service credits/(costs) arising during the period - Pension Benefits	(15		)	1			—
Prior service credits/(costs) arising during the period - Postretirement Benefits	21			24			51
	80			141			(27		)
Tax benefit/(expense)	(19		)	(55		)	18
	$	61		$	86		$	(9	)
Reclassification of net postemployment benefit losses/(gains) to net income/(loss):
Amortization of unrecognized losses/(gains) - Pension Benefits	$	2		$	1		$	—
Amortization of unrecognized losses/(gains) - Postretirement Benefits	—			—			(1		)
Amortization of prior service costs/(credits) - Postretirement Benefits	(311		)	(328		)	(355		)
Net settlement and curtailment losses/(gains) - Pension Benefits	153			2			25
Net settlement and curtailment losses/(gains) - Postretirement Benefits	—			(177		)	—
	(156		)	(502		)	(331		)
Tax benefit/(expense)	38			193			127
	$	(118	)	$	(309	)	$	(204	)

Pension Plans

Defined Benefit Plan Disclosure [Line Items]

Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status

The projected benefit obligations, fair value of plan assets, and funded status of our pension plans were (in millions):

	U.S. Plans						Non-U.S. Plans
	December 29, 2018			December 30, 2017			December 29, 2018			December 30, 2017
Benefit obligation at beginning of year	$	4,719		$	5,157		$	3,464		$	3,099
Service cost	10			11			19			19
Interest cost	158			178			67			66
Benefits paid	(191		)	(224		)	(126		)	(161		)
Actuarial losses/(gains)	(447		)	270			(118		)	120
Plan amendments	1			—			14			(2		)
Currency	—			—			(175		)	264
Settlements	(190		)	(692		)	(1,221		)	(1		)
Curtailments	—			—			(1		)	—
Special/contractual termination benefits	—			19			7			9
Other	—			—			—			51
Benefit obligation at end of year	4,060			4,719			1,930			3,464
Fair value of plan assets at beginning of year	4,785			4,788			4,156			3,628
Actual return on plan assets	(185		)	613			49			289
Employer contributions	—			300			57			30
Benefits paid	(191		)	(224		)	(126		)	(161		)
Currency	—			—			(221		)	322
Settlements	(190		)	(692		)	(1,221		)	(1		)
Other	—			—			(5		)	49
Fair value of plan assets at end of year	4,219			4,785			2,689			4,156
Net pension liability/(asset) recognized at end of year	$	(159	)	$	(66	)	$	(759	)	$	(692	)

Amounts Recognized in Balance Sheet

We recognized these amounts on our consolidated balance sheets as follows (in millions):

	December 29, 2018			December 30, 2017
Other non-current assets	$	999		$	871
Other current liabilities	(4		)	(41		)
Accrued postemployment costs	(77		)	(72		)
Net pension asset/(liability) recognized	$	918		$	758

Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets

For certain of our U.S. and non-U.S. plans that were underfunded based on accumulated benefit obligations in excess of plan assets, the projected benefit obligations, accumulated benefit obligations, and the fair value of plan assets were (in millions):

	U.S. Plans				Non-U.S. Plans
	December 29, 2018		December 30, 2017		December 29, 2018		December 30, 2017
Projected benefit obligation	$	—	$	—	$	146	$	1,368
Accumulated benefit obligation	—		—		139		1,360
Fair value of plan assets	—		—		65		1,254

Schedule of Projected Benefit Obligations in Excess of Fair Value of Plan Assets

For certain of our U.S. and non-U.S. plans that were underfunded based on projected benefit obligations in excess of plan assets, the projected benefit obligations, accumulated benefit obligations, and the fair value of plan assets were (in millions):

	U.S. Plans				Non-U.S. Plans
	December 29, 2018		December 30, 2017		December 29, 2018		December 30, 2017
Projected benefit obligation	$	—	$	—	$	148	$	1,400
Accumulated benefit obligation	—		—		141		1,392
Fair value of plan assets	—		—		67		1,287

Net Cost/(Benefit)

Net pension cost/(benefit) consisted of the following (in millions):

	U.S. Plans									Non-U.S. Plans
	December 29, 2018			December 30, 2017			December 31, 2016			December 29, 2018			December 30, 2017			December 31, 2016
Service cost	$	10		$	11		$	13		$	19		$	19		$	25
Interest cost	158			178			203			67			66			87
Expected return on plan assets	(247		)	(262		)	(290		)	(175		)	(180		)	(182		)
Amortization of unrecognized losses/(gains)	—			—			—			2			1			—
Settlements	(4		)	2			23			158			—			2
Curtailments	—			—			—			(1		)	—			—
Special/contractual termination benefits	—			19			—			7			9			3
Other	—			2			—			—			(15		)	—
Net pension cost/(benefit)	$	(83	)	$	(50	)	$	(51	)	$	77		$	(100	)	$	(65	)

Weighted Average Asset Allocation of Plan Assets

Our weighted average asset allocations were:

	U.S. Plans				Non-U.S. Plans
	December 29, 2018		December 30, 2017		December 29, 2018		December 30, 2017
Fixed-income securities	84	%	62	%	45	%	39	%
Equity securities	14	%	27	%	34	%	27	%
Cash and cash equivalents	2	%	11	%	16	%	4	%
Real estate	—	%	—	%	3	%	6	%
Certain insurance contracts	—	%	—	%	2	%	24	%
Total	100	%	100	%	100	%	100	%

Fair Value of Plan Assets

The fair value of pension plan assets at December 29, 2018 was determined using the following fair value measurements (in millions):

Asset Category	Total Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Corporate bonds and other fixed-income securities	$	3,089	$	—	$	3,089	$	—
Government bonds	366		366		—		—
Total fixed-income securities	3,455		366		3,089		—
Equity securities	665		665		—		—
Cash and cash equivalents	422		419		3		—
Real estate	79		—		—		79
Certain insurance contracts	53		—		—		53
Fair value excluding investments measured at net asset value	4,674		1,450		3,092		132
Investments measured at net asset value(a)	2,234
Total plan assets at fair value	$	6,908

(a) Amount includes cash collateral of $269 million associated with our securities lending program, which is reflected as an asset, and a corresponding securities lending payable of $269 million, which is reflected as a liability. The net impact on total plan assets at fair value is zero.

The fair value of pension plan assets at December 30, 2017 was determined using the following fair value measurements (in millions):

Asset Category	Total Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Corporate bonds and other fixed-income securities	$	2,606	$	—	$	2,606	$	—
Government bonds	467		467		—		—
Total fixed-income securities	3,073		467		2,606		—
Equity securities	1,044		1,044		—		—
Cash and cash equivalents	208		205		3		—
Real estate	262		—		—		262
Certain insurance contracts	983		—		—		983
Fair value excluding investments measured at net asset value	5,570		1,716		2,609		1,245
Investments measured at net asset value(a)	3,371
Total plan assets at fair value	$	8,941

Changes in Level 3 Plan Assets

Changes in our Level 3 plan assets for the year ended December 29, 2018 included (in millions):

Asset Category	December 30, 2017		Additions		Net Realized Gain/(Loss)			Net Unrealized Gain/(Loss)			Net Purchases, Issuances and Settlements			Transfers Into/(Out of) Level 3			December 29, 2018
Real estate	$	262	$	—	$	49		$	(7	)	$	(210	)	$	(15	)	$	79
Certain insurance contracts	983		—		(82		)	(3		)	(845		)	—			53
Total Level 3 investments	$	1,245	$	—	$	(33	)	$	(10	)	$	(1,055	)	$	(15	)	$	132

Net purchases, issuances and settlements of $845 million principally related to insurance contract settlements in Canada in connection with the wind-up of our Canadian salaried and hourly defined benefit pension plans.

Changes in our Level 3 plan assets for the year ended December 30, 2017 included (in millions):

Asset Category	December 31, 2016		Additions		Net Realized Gain/(Loss)		Net Unrealized Gain/(Loss)		Net Purchases, Issuances and Settlements			Transfers Into/(Out of) Level 3		December 30, 2017
Real estate	$	234	$	—	$	14	$	14	$	—		$	—	$	262
Certain insurance contracts	189		797		—		36		(39		)	—		983
Total Level 3 investments	$	423	797		$	14	$	50	$	(39	)	$	—	$	1,245

Estimated Future Benefit Payments

The estimated future benefit payments from our pension plans at December 29, 2018 were (in millions):

	U.S. Plans		Non-U.S. Plans
2019	$	331	$	70
2020	320		70
2021	317		72
2022	309		80
2023	301		79
2024-2028	1,351		436

Pension Plans | Pension Benefit Obligation

Defined Benefit Plan Disclosure [Line Items]

Weighted Average Assumptions Used

We used the following weighted average assumptions to determine our projected benefit obligations under the pension plans:

	U.S. Plans				Non-U.S. Plans
	December 29, 2018		December 30, 2017		December 29, 2018		December 30, 2017
Discount rate	4.4	%	3.7	%	2.9	%	2.4	%
Rate of compensation increase	4.1	%	4.1	%	3.9	%	3.9	%

Pension Plans | Net Pension Cost

Defined Benefit Plan Disclosure [Line Items]

Weighted Average Assumptions Used

We used the following weighted average assumptions to determine our net pension costs:

	U.S. Plans						Non-U.S. Plans
	December 29, 2018		December 30, 2017		December 31, 2016		December 29, 2018		December 30, 2017		December 31, 2016
Discount rate - Service cost	3.8	%	4.2	%	4.5	%	3.0	%	3.2	%	4.2	%
Discount rate - Interest cost	3.6	%	3.6	%	3.5	%	2.9	%	2.1	%	3.3	%
Expected rate of return on plan assets	5.5	%	5.7	%	5.7	%	4.5	%	4.8	%	5.6	%
Rate of compensation increase	4.1	%	4.1	%	4.1	%	3.9	%	4.0	%	3.4	%

Postretirement Plans

Defined Benefit Plan Disclosure [Line Items]

Amounts Recognized in Balance Sheet

We recognized the net postretirement benefit asset/(liability) on our consolidated balance sheets as follows (in millions):

	December 29, 2018			December 30, 2017
Other current liabilities	$	(14	)	$	(10	)
Accrued postemployment costs	(236		)	(355		)
Net postretirement benefit asset/(liability) recognized	$	(250	)	$	(365	)

Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets

For certain of our postretirement benefit plans that were underfunded based on accumulated postretirement benefit obligations in excess of plan assets, the accumulated benefit obligations and the fair value of plan assets were (in millions):

	December 29, 2018		December 30, 2017
Accumulated benefit obligation	$	1,294	$	1,553
Fair value of plan assets	1,044		1,188

Net Cost/(Benefit)

Net postretirement cost/(benefit) consisted of the following (in millions):

							As Restated
	December 29, 2018			December 30, 2017			December 31, 2016
Service cost	$	8		$	10		$	12
Interest cost	45			49			52
Expected return on plan assets	(50		)	—			—
Amortization of prior service costs/(credits)	(311		)	(328		)	(355		)
Amortization of unrecognized losses/(gains)	—			—			(1		)
Curtailments	—			(177		)	—
Net postretirement cost/(benefit)	$	(308	)	$	(446	)	$	(292	)

Weighted Average Asset Allocation of Plan Assets

Our weighted average asset allocations were:

	December 29, 2018		December 30, 2017
Fixed-income securities	65	%	—	%
Equity securities	27	%	—	%
Cash and cash equivalents	8	%	100	%

Fair Value of Plan Assets

The fair value of postretirement benefit plan assets at December 29, 2018 was determined using the following fair value measurements (in millions):

Asset Category	Total Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Government bonds	$	26	$	26	$	—	$	—
Corporate bonds and other fixed-income securities	567		—		567		—
Total fixed-income securities	593		26		567		—
Equity securities	146		146		—		—
Fair value excluding investments measured at net asset value	739		172		567		—
Investments measured at net asset value	305
Total plan assets at fair value	$	1,044

Estimated Future Benefit Payments

Our estimated future benefit payments for our postretirement plans at December 29, 2018 were (in millions):

2019	$	131
2020	127
2021	120
2022	114
2023	107
2024-2028	440

Changes in Accumulated Benefit Obligation, Fair Value of Plan Assets, and Funded Status

The accumulated benefit obligation, fair value of plan assets, and funded status of our postretirement benefit plans were (in millions):

	December 29, 2018			December 30, 2017
Benefit obligation at beginning of year	$	1,553		$	1,714
Service cost	8			10
Interest cost	45			49
Benefits paid	(136		)	(142		)
Actuarial losses/(gains)	(142		)	(70		)
Plan amendments	(21		)	(24		)
Currency	(13		)	13
Other	—			3
Benefit obligation at end of year	1,294			1,553
Fair value of plan assets at beginning of year	1,188			—
Actual return on plan assets	(26		)	—
Employer contributions	19			1,329
Benefits paid	(137		)	(142		)
Other	—			1
Fair value of plan assets at end of year	1,044			1,188
Net postretirement benefit liability/(asset) recognized at end of year	$	250		$	365

Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates

A one-percentage-point change in assumed health care cost trend rates would have the following effects, increase/(decrease) in cost and obligation, as of December 29, 2018 (in millions):

	One-Percentage-Point
	Increase		(Decrease)
Effect on annual service and interest cost	$	3	$	(3	)
Effect on postretirement benefit obligation	48		(41		)

Postretirement Plans | Postretirement Benefit Obligation

Defined Benefit Plan Disclosure [Line Items]

Weighted Average Assumptions Used

We used the following weighted average assumptions to determine our postretirement benefit obligations:

	December 29, 2018		December 30, 2017
Discount rate	4.2	%	3.5	%
Health care cost trend rate assumed for next year	6.7	%	6.7	%
Ultimate trend rate	4.9	%	4.9	%

Postretirement Plans | Net Postretirement Costs

Defined Benefit Plan Disclosure [Line Items]

Weighted Average Assumptions Used

We used the following weighted average assumptions to determine our net postretirement benefit plans cost:

	December 29, 2018		December 30, 2017		December 31, 2016
Discount rate - Service cost	3.6	%	4.0	%	4.3	%
Discount rate - Interest cost	3.0	%	3.0	%	3.0	%
Expected rate of return on plan assets	4.4	%	—	%	—	%
Health care cost trend rate	6.7	%	6.3	%	6.5	%