Retirement Plans (Tables)

12 Months Ended

Dec. 28, 2019

Retirement Benefits [Abstract]

Components of Net Periodic Pension and Other Postretirement Benefit Costs

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

	2019			2018			2017
Components of net periodic pension benefit costs (credits):
Service cost	$	2		$	2		$	2
Interest cost	37			36			40
Expected return on plan assets	(49		)	(52		)	(48		)
Amortization of net loss	4			3			4
Settlements	12			—			18
Net periodic pension benefit costs (credits)	$	6		$	(11	)	$	16

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:

	2019		2018		2017
Changes recognized in accumulated other comprehensive loss:
Actuarial gain	$	44	$	6	$	—
Amortization of net loss	4		3		4
Settlements	12		—		18
Net amount recognized	$	60	$	9	$	22

Funded Status of the Defined Benefit Plans

The funded status of the Retirement Plan for the last three fiscal years was as follows:

	Pension Benefits
	2019			2018			2017
Change in benefit obligation:
Benefit obligation as of beginning of year	$	871		$	976		$	966
Service cost	2			2			2
Interest cost	37			36			40
Actuarial loss (gain)	100			(97		)	76
Settlements	(84		)	—			(87		)
Benefit disbursements	(23		)	(46		)	(21		)
Benefit obligation as of end of year	903			871			976
Change in plan assets:
Fair value of plan assets as of beginning of year	836			851			799
Return on plan assets	193			(40		)	124
Employer contribution	1			71			36
Settlements	(84		)	—			(87		)
Benefit disbursements	(23		)	(46		)	(21		)
Fair value of plan assets as of end of year	923			836			851
Net funded status	$	20		$	(35	)	$	(125	)

Schedule of Net Funded Status [Table Text Block]

	Other Postretirement Plans
	2019			2018			2017
Change in benefit obligation:
Benefit obligation as of beginning of year	$	6		$	7		$	7
Benefit disbursements	(1		)	(1		)	(1		)
Other	1			—			1
Benefit obligation as of end of year	6			6			7
Change in plan assets:
Fair value of plan assets as of beginning of year	—			—			—
Employer contribution	1			1			1
Benefit disbursements	(1		)	(1		)	(1		)
Fair value of plan assets as of end of year	—			—			—
Net funded status	$	(6	)	$	(6	)	$	(7	)

Schedule of Amounts in Accumulated Other Comprehensive Income (Loss) to be Recognized over Next Fiscal Year [Table Text Block]

	Pension Benefits
	2019			2018			2017
Amounts recognized in the consolidated    balance sheets consist of the following:
Prepaid benefit obligation—noncurrent	$	22		$	—		$	—
Accrued benefit obligation—current	—			—			(1		)
Accrued benefit obligation—noncurrent	(2		)	(35		)	(124		)
Net amount recognized in the consolidated    balance sheets	$	20		$	(35	)	$	(125	)
Amounts recognized in accumulated other    comprehensive loss consist of the following:
Net loss	$	129		$	190		$	199
Net loss recognized in accumulated other    comprehensive loss	$	129		$	190		$	199
Additional information:
Accumulated benefit obligation	$	899		$	869		$	974

	Other Postretirement Plans
	2019			2018			2017
Amounts recognized in the consolidated    balance sheets consist of the following:
Accrued benefit obligation—current	$	(1	)	$	(1	)	$	(1	)
Accrued benefit obligation—noncurrent	(5		)	(5		)	(6		)
Net amount recognized in the consolidated    balance sheets	$	(6	)	$	(6	)	$	(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	$	1

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

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

	Pension Benefits
	2019		2018		2017
Benefit obligation:
Discount rate	3.50	%	4.35	%	3.70	%
Annual compensation increase	3.60	%	3.60	%	3.60	%
Net cost:
Discount rate	4.35	%	3.70	%	4.25	%
Expected return on plan assets	6.00	%	6.00	%	6.00	%
Annual compensation increase	3.60	%	3.60	%	3.60	%

	Other Postretirement Plans
	2019		2018		2017
Benefit obligation—discount rate	3.50	%	4.35	%	3.70	%
Net cost—discount rate	4.35	%	3.70	%	4.25	%

Assumed Health Care Trend Rates

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

	2019		2018		2017
Immediate rate	5.90	%	6.30	%	6.70	%
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 28, 2019
	Level 1		Level 2		Level 3		Total
Cash and cash equivalents	$	3	$	—	$	—	$	3
Equities:
Domestic	46		—		—		46
International	2		—		—		2
Mutual fund:
International equities	26		—		—		26
Long-term debt securities:
Corporate debt securities:
Domestic	—		248		—		248
International	—		38		—		38
U.S. government securities	—		6		—		6
Other	—		2		—		2
	$	77	$	294	$	—	371
Common collective trust funds:
Cash equivalents							16
Domestic equities							193
International equities							50
Treasury STRIPS							293
Total investments measured at net asset value      as a practical expedient							552
Total defined benefit plans’ assets							$	923

	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

Estimated Future Benefit Payments

Estimated future benefit payments, under Company sponsored plans as of December 28, 2019, were as follows:

	Pension Benefits		Other Postretirement Plans
2020	$	52	$	1
2021	50		1
2022	48		1
2023	45		1
2024	43		1
Subsequent five years	220		2

Contributions to Multiemployer Pension Plans

Pension Fund	EIN/ Plan Number	PPA Zone Status		FIP/RP Status Pending/ Implemented	Surcharge Imposed	Expiration Dates
		2019	2018
Minneapolis Food Distributing    Industry Pension Plan	41-6047047/001	Green	Green	N/A	No	04/01/21
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	36-6491473/001	Green	Green	N/A	No	6/30/21
United Teamsters Trust Fund A	13-5660513/001	Yellow	Yellow	Implemented	No	5/30/22
Warehouse Employees Local    169 and Employers Joint    Pension Fund(1)	23-6230368/001	Red	Red	Implemented	No	2/13/22

(1) 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.

	Contributions(1)(2)						Contributions That Exceed 5% of Total Plan Contributions(3)
	2019		2018		2017		2018	2017
Pension Fund
Minneapolis Food Distributing Industry Pension Plan	$	5	$	5	$	5	Yes	Yes
Teamster Pension Trust Fund of Philadelphia and Vicinity	4		4		4		No	No
Local 703 I.B. of T. Grocery and Food Employees’       Pension Plan	2		2		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	24		21		21		—	—
	$	38	$	35	$	34

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