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Document and Entity Information
6 Months Ended
Dec. 31, 2021
Document and Entity Information [Abstract]  
Document Type 6-K
Entity Registrant Name DIAGEO plc
Amendment Flag false
Document Period End Date Dec. 31, 2021
Document Fiscal Year Focus 2022
Document Fiscal Period Focus Q2
Entity Central Index Key 0000835403
Current Fiscal Year End Date --06-30