Commitments and Contingencies - Additional Information (Detail)	Apr. 28, 2022	Jul. 09, 2021
Commitments And Contingencies Disclosure [Abstract]
Multiemployer plan number of years relief from risk of insolvency		30 years
Time period for submission review the appllcation	120 days

Multiemployer plan number of years relief from risk of insolvency.

No definition available.

Name:	sptn_MultiemployerPlanNumberOfYearsReliefFromRiskOfInsolvency
Namespace Prefix:	sptn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration