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Pension Benefits (Narrative) (Details)	12 Months Ended
	Jun. 30, 2024
Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Minimum length of investment horizon (in years)	10 years

X

- Definition

Minimum number of years in investment horizon for defined benefit pension plan assets in consideration of the average age of the plans' participants.

+ References

No definition available.

+ Details

Name:	lanc_MinimumNumberOfYearsInInvestmentHorizon
Namespace Prefix:	lanc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- 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.

+ Details

Name:	us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: