XML 10 R29.htm IDEA: XBRL DOCUMENT
v3.19.3

Acquisitions (Narrative) (Details) $ in Millions | 12 Months Ended
--- | ---
Jun. 30, 2019 USD ($)
Omni Baking [Member] |
Business Acquisition [Line Items] |
Purchase price | $ 22.3
Bantam Bagels [Member] |
Business Acquisition [Line Items] |
Purchase price | $ 33.1

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_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=lanc_OmniBakingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=lanc_BantamBagelsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |