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Commitments and Contingencies - Schedule of Unions Representing Employees and the Expiration Date for Agreements (Detail) | 12 Months Ended
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Jan. 01, 2022
Norfolk Virginia [Member] |
Commitments And Contingencies [Line Items] |
Union Locals | IBT 822
Expiration Dates | 2022-04
Columbus Georgia [Member] |
Commitments And Contingencies [Line Items] |
Union Locals | IBT 528
Expiration Dates | 2022-09
Grand Rapids Michigan [Member] |
Commitments And Contingencies [Line Items] |
Union Locals | IBT 406
Expiration Dates | 2022-10
Landover Maryland [Member] |
Commitments And Contingencies [Line Items] |
Union Locals | IBT 639
Expiration Dates | 2024-02
Lima, Ohio Warehouse [Member] |
Commitments And Contingencies [Line Items] |
Union Locals | IBT 908
Expiration Dates | 2025-01
Lima, Ohio Drivers [Member] |
Commitments And Contingencies [Line Items] |
Union Locals | IBT 908
Expiration Dates | 2025-01
Bellefontaine, Ohio GTL Truck Lines, Inc. [Member] |
Commitments And Contingencies [Line Items] |
Union Locals | IBT 908
Expiration Dates | 2025-02
Bellefontaine Ohio General Merchandise Service Division [Member] |
Commitments And Contingencies [Line Items] |
Union Locals | IBT 908
Expiration Dates | 2025-02

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- Definition Commitments and Contingencies. + References No definition available. + Details
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- Definition Labor union agreement expiration date. + References No definition available. + Details
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- Definition Unions representing employees. + References No definition available. + Details
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- Details
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Data Type: | na
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- Details
Name: | srt_StatementGeographicalAxis=sptn_ColumbusGeorgiaMember
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Data Type: | na
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- Details
Name: | srt_StatementGeographicalAxis=sptn_GrandRapidsMichiganMember
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Data Type: | na
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- Details
Name: | srt_StatementGeographicalAxis=sptn_LandoverMarylandMember
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Data Type: | na
Balance Type: |
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- Details
Name: | srt_StatementGeographicalAxis=sptn_LimaOhioWarehouseMember
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Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_StatementGeographicalAxis=sptn_LimaOhioDriversMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_StatementGeographicalAxis=sptn_BellefontaineOhioGTLTruckLinesIncMember
Namespace Prefix: |
Data Type: | na
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- Details
Name: | srt_StatementGeographicalAxis=sptn_BellefontaineOhioGeneralMerchandiseServiceDivisionMember
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