Retirement Plans (Tables)

12 Months Ended

Dec. 29, 2018

Retirement Benefits [Abstract]

Components of Net Periodic Pension and Other Postretirement Benefit Costs

The components of net periodic pension benefit (credits) costs for the last three fiscal years were as follows:

	2018			2017			2016
Components of net periodic pension (credits) benefit costs:
Service cost	$	2		$	2		$	4
Interest cost	36			40			41
Expected return on plan assets	(52		)	(48		)	(48		)
Amortization of net loss	3			4			8
Settlements	—			18			4
Net periodic pension (credits) benefit costs	$	(11	)	$	16		$	9

Changes in Plan Assets and Benefit Obligations

Changes in plan assets and benefit obligations recorded in accumulated other comprehensive loss for pension benefits for the last three fiscal years were as follows:

	2018		2017		2016
Changes recognized in accumulated other comprehensive loss:
Actuarial gain (loss)	$	6	$	—	$	(63	)
Prior year correction(1)	—		—		(22		)
Amortization of net loss	3		4		8
Settlements	—		18		4
Net amount recognized	$	9	$	22	$	(73	)

(1) In the second quarter of fiscal year 2016, the Company recorded a $22 million increase to its pension obligation, with a corresponding increase to accumulated other comprehensive loss, to correct a computational error related to a 2015 pension plan freeze. The Company determined the error did not materially impact the financial statements for any of the periods reported.

Funded Status of the Defined Benefit Plans

	Pension Benefits
	2018			2017			2016
Amounts recognized in the consolidated    balance sheets consist of the following:
Accrued benefit obligation—current	$	—		$	(1	)	$	(1	)
Accrued benefit obligation—noncurrent	(35		)	(124		)	(166		)
Net amount recognized in the consolidated    balance sheets	$	(35	)	$	(125	)	$	(167	)
Amounts recognized in accumulated other    comprehensive loss consist of the following:
Net loss	$	190		$	199		$	221
Net loss recognized in accumulated other    comprehensive loss	$	190		$	199		$	221
Additional information:
Accumulated benefit obligation	$	869		$	974		$	963

	Other Postretirement Plans
	2018			2017			2016
Amounts recognized in the consolidated    balance sheets consist of the following:
Accrued benefit obligation—current	$	(1	)	$	(1	)	$	(1	)
Accrued benefit obligation—noncurrent	(5		)	(6		)	(6		)
Net amount recognized in the consolidated    balance sheets	$	(6	)	$	(7	)	$	(7	)
Amounts recognized in accumulated other    comprehensive loss consist of the following:
Gain, net of prior service cost	$	1		$	1		$	1
Net gain recognized in accumulated other    comprehensive loss	$	1		$	1		$	1

	Pension Benefits
Amounts expected to be amortized from    accumulated other comprehensive loss in the    next fiscal year:
Net loss	$	4
Net expected to be amortized	$	4

The funded status of the defined benefit plans for the last three fiscal years was as follows:

	Pension Benefits
	2018			2017			2016
Change in benefit obligation:
Benefit obligation at beginning of year	$	976		$	966		$	863
Service cost	2			2			4
Interest cost	36			40			41
Actuarial (gain) loss	(97		)	76			73
Prior year correction	—			—			22
Settlements	—			(87		)	(16		)
Benefit disbursements	(46		)	(21		)	(21		)
Benefit obligation at end of year	871			976			966
Change in plan assets:
Fair value of plan assets at beginning of year	851			799			742
Return on plan assets	(40		)	124			58
Employer contribution	71			36			36
Settlements	—			(87		)	(16		)
Benefit disbursements	(46		)	(21		)	(21		)
Fair value of plan assets at end of year	836			851			799
Net funded status	$	(35	)	$	(125	)	$	(167	)

The fiscal year 2018 pension benefits actuarial gain of $97 million was primarily due to an increase in the discount rate. The 2017 and 2016 pension benefits actuarial losses of $76 million and $73 million, respectively, were primarily due to decreases in discount rates.

	Other Postretirement Plans
	2018			2017			2016
Change in benefit obligation:
Benefit obligation at beginning of year	$	7		$	7		$	7
Benefit disbursements	(1		)	(1		)	(1		)
Other	—			1			1
Benefit obligation at end of year	6			7			7
Change in plan assets:
Fair value of plan assets at beginning of year	—			—			—
Employer contribution	1			1			1
Benefit disbursements	(1		)	(1		)	(1		)
Fair value of plan assets at end of year	—			—			—
Net funded status	$	(6	)	$	(7	)	$	(7	)

Assumptions to Determine Benefit Obligations at Period-end and Net Pension Costs

Weighted average assumptions used to determine benefit obligations at period-end and net pension costs for the last three fiscal years were as follows:

	Pension Benefits
	2018		2017		2016
Benefit obligation:
Discount rate	4.35	%	3.70	%	4.25	%
Annual compensation increase	3.60	%	3.60	%	3.60	%
Net cost:
Discount rate	3.70	%	4.25	%	4.64	%
Expected return on plan assets	6.00	%	6.00	%	6.50	%
Annual compensation increase	3.60	%	3.60	%	3.60	%

	Other Postretirement Plans
	2018		2017		2016
Benefit obligation—discount rate	4.35	%	3.70	%	4.25	%
Net cost—discount rate	3.70	%	4.25	%	4.40	%

Assumed Health Care Trend Rates

The assumed healthcare trend rates for the last three fiscal years were as follows:

	2018		2017		2016
Immediate rate	6.30	%	6.70	%	7.40	%
Ultimate trend rate	4.50	%	4.50	%	4.50	%
Year the rate reaches the ultimate trend rate	2037		2037		2037

Fair Value of Defined Benefit Plans' Assets by Asset Fair Value Hierarchy Level

The following table sets forth the fair value of our defined benefit plans’ assets by asset fair value hierarchy level.

	Asset Fair Value as of December 29, 2018
	Level 1		Level 2		Level 3		Total
Cash and cash equivalents	$	5	$	—	$	—	$	5
Equities:
Domestic	34		—		—		34
International	1		—		—		1
Mutual fund:
International equities	21		—		—		21
Long-term debt securities:
Corporate debt securities:
Domestic	—		236		—		236
International	—		33		—		33
U.S. government securities	—		8		—		8
Other	—		2		—		2
	$	61	$	279	$	—	340
Common collective trust funds:
Cash equivalents							9
Domestic equities							156
International equities							40
Treasury STRIPS							291
Total investments measured at net asset value      as a practical expedient							496
Total defined benefit plans’ assets							$	836

	Asset Fair Value as of December 30, 2017
	Level 1		Level 2		Level 3		Total
Cash and cash equivalents	$	8	$	—	$	—	$	8
Equities:
Domestic	34		—		—		34
International	1		—		—		1
Mutual funds:
Domestic equities	37		—		—		37
International equities	32		—		—		32
Long-term debt securities:
Corporate debt securities:
Domestic	—		224		—		224
International	—		26		—		26
U.S. government securities	—		155		—		155
Government agencies securities	—		8		—		8
Other	—		4		—		4
	$	112	$	417	$	—	529
Common collective trust funds:
Cash equivalents							10
Domestic equities							249
International equities							63
Total investments measured at net asset value      as a practical expedient							322
Total defined benefit plans’ assets							$	851

Estimated Future Benefit Payments

Estimated future benefit payments, under Company sponsored plans as of December 29, 2018, were as follows:

	Pension Benefits		Other Postretirement Plans
2019	$	49	$	1
2020	48		1
2021	48		1
2022	47		1
2023	45		1
Subsequent five years	232		2

Contributions to Multiemployer Pension Plans

Pension Fund	EIN/ Plan Number	PPA Zone Status		FIP/RP Status Pending/ Implemented	Surcharge Imposed	Expiration Dates
		2018	2017
Minneapolis Food Distributing    Industry Pension Plan	41-6047047/001	Green	Green	Implemented	No	4/1/21
Teamster Pension Trust Fund of    Philadelphia and Vicinity	23-1511735/001	Yellow	Yellow	Implemented	No	2/13/22
Local 703 I.B. of T. Grocery and Food Employees’ Pension Plan (1)	36-6491473/001	Green	Green	N/A	No	6/30/18
United Teamsters Trust Fund A	13-5660513/001	Yellow	Yellow	Implemented	No	5/30/19
Warehouse Employees Local    169 and Employers Joint    Pension Fund(2)	23-6230368/001	Red	Red	Implemented	No	2/13/22

(1) The collective bargaining agreement for this pension fund is operating under an extension.

(2) Local 169 filed a Notice of Critical and Declining Status in 2017.

The following table provides information about the Company’s contributions to its multiemployer pension plans. For plans that are not individually significant to the Company, the total amount of the Company's contributions is aggregated. Prior year contribution amounts have been reclassified to other funds (below) for plans no longer considered significant in 2018.

	Contributions(1)(2)						Contributions That Exceed 5% of Total Plan Contributions(3)
	2018		2017		2016		2017	2016
Pension Fund
Minneapolis Food Distributing Industry Pension Plan	5		5		5		Yes	Yes
Teamster Pension Trust Fund of Philadelphia and Vicinity	4		4		3		No	No
Local 703 I.B. of T. Grocery and Food Employees’       Pension Plan	2		1		1		Yes	Yes
United Teamsters Trust Fund A	2		2		2		Yes	Yes
Warehouse Employees Local 169 and Employers       Joint Pension Fund	1		1		1		Yes	Yes
Other Funds	21		21		21		—	—
	$	35	$	34	$	33

(1) Contributions made to these plans during the Company’s fiscal year, which may not coincide with the plans’ fiscal years.

(2) Contributions do not include payments related to multiemployer pension plan withdrawals/settlements.

(3) Indicates whether the Company was listed in the respective multiemployer pension plan Form 5500 for the applicable plan year as having made more than 5% of total contributions to the plan.