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Document and Entity Information
Sep. 04, 2024
Cover [Abstract]  
Document Type 8-K
Document Period End Date Sep. 04, 2024
Entity Registrant Name Automatic Data Processing, Inc.
Entity Incorporation State Country Code DE
Entity File Number 1-5397
Entity Tax Identification Number 22-1467904
Entity Address Address Line 1 One ADP Boulevard
Entity Address City Or Town Roseland
Entity Address State Or Province NJ
Entity Address Postal Zip Code 07068
City Area Code 973
Local Phone Number 974-5000
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common Stock, $0.10 Par Value (voting)
Trading Symbol ADP
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Entity Central Index Key 0000008670
Amendment Flag false