Employee Retirement and Profit Sharing Plans - Information Regarding Participation in Multiemployer Pension Plans (Details) - Agreement	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Western Conference of Teamsters Pension Plan
Defined Benefit Plan Disclosure [Line Items]
PPA Zone Status	Green	Green
Extended Amortization Provisions	No
Collective bargaining agreements	12
Percentage of agreements representing total employee participants (as a percent)	40.00%
Central States Southeast And Southwest Areas Pension Plan
Defined Benefit Plan Disclosure [Line Items]
PPA Zone Status	Red	Red
FIP / RP Status Pending/ Implemented	Implemented
Extended Amortization Provisions	No
Collective bargaining agreements	16
Retail Wholesale Department Store International Union And Industry Pension Fund
Defined Benefit Plan Disclosure [Line Items]
PPA Zone Status	Red	Red
FIP / RP Status Pending/ Implemented	Implemented
Extended Amortization Provisions	Yes
Collective bargaining agreements	8
Dairy Industry Union Pension Plan For Philadelphia Vicinity
Defined Benefit Plan Disclosure [Line Items]
PPA Zone Status	Red	Red
FIP / RP Status Pending/ Implemented	Implemented
Extended Amortization Provisions	Yes
Collective bargaining agreements	6
Agreements Expiring in 2018 \| Central States Southeast And Southwest Areas Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Percentage of agreements representing total employee participants (as a percent)	43.00%
Agreements Expiring in 2018 \| Retail Wholesale Department Store International Union And Industry Pension Fund
Defined Benefit Plan Disclosure [Line Items]
Percentage of agreements representing total employee participants (as a percent)	45.00%
Agreements Expiring in 2019 \| Central States Southeast And Southwest Areas Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Percentage of agreements representing total employee participants (as a percent)	32.00%
Agreements Expiring in 2019 \| Retail Wholesale Department Store International Union And Industry Pension Fund
Defined Benefit Plan Disclosure [Line Items]
Percentage of agreements representing total employee participants (as a percent)	54.00%
Agreements Expiring in 2020 \| Central States Southeast And Southwest Areas Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Percentage of agreements representing total employee participants (as a percent)	25.00%
Agreements Expiring in 2020 \| Retail Wholesale Department Store International Union And Industry Pension Fund
Defined Benefit Plan Disclosure [Line Items]
Percentage of agreements representing total employee participants (as a percent)	1.00%
Maximum \| Dairy Industry Union Pension Plan For Philadelphia Vicinity
Defined Benefit Plan Disclosure [Line Items]
Percentage of agreements representing total employee participants (as a percent)	59.00%

Multiemployer Plans Extended Amortization Provisions

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- Definition

Number Of Collective Bargaining Agreements

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Indicate the multiemployer plan's certified zone status as currently required by the Pension Protection Act of 2006 or a subsequent amendment thereof. The zone status categories are red (critical status), orange (seriously endangered), yellow (endangered), and green (none of the above). The acceptable values are "red", "orange", "yellow", "green", "other", and "NA". A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 80
-Section 50
-Paragraph 5
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947

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- Definition

Percentage of employee participants subject to a collective bargaining arrangement to all of the employer's participants in a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 80
-Section 50
-Paragraph 5
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947

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- Definition

Indicate whether a funding improvement plan or rehabilitation plan has been implemented or is pending for a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. The acceptable values are "no", "pending", "implemented", "other", and "NA".

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 80
-Section 50
-Paragraph 5
-Subparagraph (f)(1)
-URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947

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