XML 79 R66.htm IDEA: XBRL DOCUMENT
v3.25.1

Short-term Financing - Narrative (Details) - USD ($) | 9 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Jun. 30, 2024
Short-term Debt [Line Items] |  |  |
Line of credit facility, fair value of amount outstanding |  | $ 0 |
Commercial paper |  | $ 0 | $ 0
Maturities of short-term funding agreements (up to) |  | 5 days |
Obligations under reverse repurchase agreements | [1] | $ 0 | $ 385,400,000
Aggregate committed obligations under reverse repurchase agreements |  | 7,300,000,000 |
364-day credit agreement |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity under credit facilities |  | $ 4,550,000,000 |
Term of credit |  | 364 days |
Extension option term |  | 1 year |
Credit Facility Expiring In June 2028 |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity under credit facilities |  | $ 2,250,000,000 |
Term of credit |  | 5 years |
Line of credit facility potentially available increase in maximum borrowing capacity |  | $ 500,000,000 |
Credit Facility Expiring In June 2029 |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity under credit facilities |  | $ 3,500,000,000 |
Term of credit |  | 5 years |
Line of credit facility potentially available increase in maximum borrowing capacity |  | $ 500,000,000 |
Commercial paper program |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity under credit facilities |  | $ 10,300,000,000 |
Debt instrument, maturity period |  | 364 days |
[1] | As of June 30, 2024, $384.0 million of short-term marketable securities and $1.4 million of cash and cash equivalents have been pledged as collateral under the Company's reverse repurchase agreements (see Note 10).

X
- Definition Debt Instrument, Aggregate Committed Obligations Under Reverse Repurchase Agreements + References No definition available. + Details
Name: | adp_DebtInstrumentAggregateCommittedObligationsUnderReverseRepurchaseAgreements
Namespace Prefix: | adp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Debt Instrument, Extension Option Term + References No definition available. + Details
Name: | adp_DebtInstrumentExtensionOptionTerm
Namespace Prefix: | adp_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt Instrument, Maturity Period + References No definition available. + Details
Name: | adp_DebtInstrumentMaturityPeriod
Namespace Prefix: | adp_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line of credit facility potentially available increase in maximum borrowing capacity. + References No definition available. + Details
Name: | adp_LineOfCreditFacilityPotentiallyAvailableIncreaseInMaximumBorrowingCapacity
Namespace Prefix: | adp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line Of Credit Facility Term Of Credit + References No definition available. + Details
Name: | adp_LineOfCreditFacilityTermOfCredit
Namespace Prefix: | adp_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maturities Of Short-Term Funding Agreements + References No definition available. + Details
Name: | adp_MaturitiesOfShortTermFundingAgreements
Namespace Prefix: | adp_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Obligations Under Reverse Repurchase Agreements + References No definition available. + Details
Name: | adp_ObligationsUnderReverseRepurchaseAgreements
Namespace Prefix: | adp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(13)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)(a)(3)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_CommercialPaper
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value of the amount outstanding under the credit facility. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-10 + Details
Name: | us-gaap_LineOfCreditFacilityFairValueOfAmountOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Details
Name: | us-gaap_DebtInstrumentAxis=adp_ThreeHundredAndSixtyFourDayCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=adp_CreditFacilityExpiringInJune2028Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=adp_CreditFacilityExpiringInJune2029Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=us-gaap_CommercialPaperMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |