Aggregate Annual Assessment

No definition available.

Name:	cah_AggregateAnnualAssessment
Namespace Prefix:	cah_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Gross Insurance Settlement Before Attorney Fees

+ References

No definition available.

+ Details

Name:	cah_GrossInsuranceSettlementBeforeAttorneyFees
Namespace Prefix:	cah_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Income from Settlements of Class Action Lawsuits

+ References

No definition available.

+ Details

Name:	cah_IncomefromSettlementsofClassActionLawsuits
Namespace Prefix:	cah_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Judgment for lost profits

+ References

No definition available.

+ Details

Name:	cah_JudgmentForLostProfits
Namespace Prefix:	cah_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Loss Contingency, Lawsuits, Number

+ References

No definition available.

+ Details

Name:	cah_LossContingencyLawsuitsNumber
Namespace Prefix:	cah_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Settling States

+ References

No definition available.

+ Details

Name:	cah_SettlingStates
Namespace Prefix:	cah_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Settling U.S Territories

+ References

No definition available.

+ Details

Name:	cah_SettlingUSTerritories
Namespace Prefix:	cah_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

+ References

+ Details

Name:	us-gaap_GainLossRelatedToLitigationSettlement
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount recovered from insurance. These recoveries reduce costs and losses that are reported as a separate line item under operating expenses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2

+ Details

Name:	us-gaap_InsuranceRecoveries
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings.

+ References

+ Details

Name:	us-gaap_LegalFees
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Aggregate carrying amount of the estimated litigation liability for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483076/450-20-50-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.25)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_LitigationReserve
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying amount of reserve for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs, which is expected to be paid within one year of the date of the statement of financial position.

+ References

+ Details

Name:	us-gaap_LitigationReserveCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Period covered by the long-term purchase commitment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_LongtermPurchaseCommitmentPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482425/460-10-50-3

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483076/450-20-50-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483076/450-20-50-4

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483076/450-20-50-4

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483076/450-20-50-9

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483076/450-20-50-9

+ Details

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

- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483076/450-20-50-1

Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483076/450-20-50-10

+ Details

Name:	us-gaap_LossContingencyAccrualAtCarryingValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of increase (decrease) in loss contingency liability.

+ References

+ Details

Name:	us-gaap_LossContingencyAccrualCarryingValuePeriodIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of cash outflow reducing loss contingency liability.

+ References

+ Details

Name:	us-gaap_LossContingencyAccrualPayments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Number of claims settled.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483076/450-20-50-4

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483076/450-20-50-9

+ Details

Name:	us-gaap_LossContingencyClaimsSettledNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

+ Details

Name:	us-gaap_LossContingencyEstimateOfPossibleLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Number of plaintiffs that have filed claims pertaining to a loss contingency.

+ References

+ Details

Name:	us-gaap_LossContingencyNumberOfPlaintiffs
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of pending claims pertaining to a loss contingency.

+ References

+ Details

Name:	us-gaap_LossContingencyPendingClaimsNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The amount of cash paid for the settlement of litigation or for other legal issues during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 25
-Subparagraph (g)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-25

+ Details

Name:	us-gaap_PaymentsForLegalSettlements
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of cash inflow for proceeds from settlement of insurance claim, classified as operating activities. Excludes insurance settlement classified as investing activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 16
-Subparagraph (c)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-16

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 21B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-21B

+ Details

Name:	us-gaap_ProceedsFromInsuranceSettlementOperatingActivities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of loss reported during the period pertaining to product liability.

+ References

No definition available.

+ Details

Name:	us-gaap_ProductLiabilityAccrualPeriodExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=cah_PharmaceuticalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=cah_ProductLiabilityLawsuitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	cah_LawsuitTypeAxis=cah_ProductLiabilityLawsuitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	cah_AgreementsAxis=cah_IVCApril2023AgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	cah_AgreementsAxis=cah_OtherAgreementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	cah_OpioidLitigationAxis=cah_TotalOpioidLitigationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_LitigationCaseAxis=cah_NewYorkOpioidStewardshipActMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_LitigationCaseAxis=cah_OpioidLawsuitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=stpr_WV
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=stpr_WA
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=stpr_OK
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=cah_NativeAmericanTribesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	cah_PlaintiffTypeAxis=cah_PrivatePartiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=stpr_GA
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=stpr_AL
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	cah_LawsuitTypeAxis=cah_ClassActionLawsuitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_LitigationCaseAxis=cah_ProductLiabilityLawsuitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=cah_AlamedaCountyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_LitigationCaseAxis=cah_ShareholderDerivativeLitigationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_LitigationCaseAxis=cah_ShareholderSecuritiesLitigationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MajorCustomersAxis=cah_CVSHealthMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Commitments, Contingent Liabilities and Litigation (Details) $ in Thousands					3 Months Ended			5 Months Ended	9 Months Ended		22 Months Ended
	Jul. 01, 2023 plaintiff	Apr. 30, 2023 lawsuit	Apr. 28, 2023 lawsuit plaintiff	Jul. 31, 2014	Mar. 31, 2023 USD ($) plaintiff	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Sep. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Apr. 28, 2023 lawsuit	Jan. 31, 2023 numberOfUSTerritories states	Oct. 31, 2022 USD ($)	Jul. 31, 2022 USD ($)	Jun. 30, 2022 USD ($)	Apr. 30, 2018 USD ($)
Loss Contingencies [Line Items]
Gain (Loss) Related to Litigation Settlement					$ 76,000	$ (61,000)			$ 256,000	$ (113,000)
Income from Settlements of Class Action Lawsuits									66,000
Pharmaceutical
Loss Contingencies [Line Items]
Judgment for lost profits							$ 16,000
Product Liability Lawsuits \| Subsequent Event
Loss Contingencies [Line Items]
Loss Contingency, Pending Claims, Number \| lawsuit			453								453
Product Liability Lawsuits \| Subsequent Event \| IVC April 2023 Agreement
Loss Contingencies [Line Items]
Loss Contingency, Claims Settled, Number \| lawsuit		4,376
Product Liability Lawsuits \| Subsequent Event \| Other Agreements [Member]
Loss Contingencies [Line Items]
Loss Contingency, Claims Settled, Number \| lawsuit											2,881
Product Liability Lawsuits \| Minimum
Loss Contingencies [Line Items]
Loss Contingency Accrual					385,000				385,000
Total Opioid Litigation [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss					6,300,000				6,300,000
Settling States \| states												48
Settling U.S Territories \| numberOfUSTerritories												5
Estimated Litigation Liability					5,850,000				5,850,000
Estimated Litigation Liability, Current					437,000				437,000
New York Opioid Stewardship Act [Member]
Loss Contingencies [Line Items]
Aggregate Annual Assessment																$ 100,000
Loss Contingency Accrual, Payments							$ 20,000		7,000
Loss Contingency Accrual					$ 7,000				7,000						$ 20,000
Loss Contingency Accrual, Period Increase (Decrease)									6,000
Opioid Lawsuits [Member]
Loss Contingencies [Line Items]
Payments for Legal Settlements									372,000
Insurance Recoveries									10,000
Opioid Lawsuits [Member] \| WEST VIRGINIA
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss														$ 124,000
Opioid Lawsuits [Member] \| WASHINGTON
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss															160,000
Opioid Lawsuits [Member] \| OKLAHOMA
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss															$ 95,000
Opioid Lawsuits [Member] \| Native American tribes
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss													$ 136,000
Opioid Lawsuits [Member] \| Private Parties [Member] \| Subsequent Event
Loss Contingencies [Line Items]
Loss Contingency, Lawsuits, Number \| lawsuit			457								457
Opioid Lawsuits [Member] \| Private Parties [Member] \| GEORGIA
Loss Contingencies [Line Items]
Loss Contingency, Number of Plaintiffs \| plaintiff					21
Opioid Lawsuits [Member] \| Private Parties [Member] \| ALABAMA \| Subsequent Event
Loss Contingencies [Line Items]
Loss Contingency, Number of Plaintiffs \| plaintiff	8
Opioid Lawsuits [Member] \| Class Action Lawsuits [Member] \| Private Parties [Member] \| Subsequent Event
Loss Contingencies [Line Items]
Loss Contingency, Lawsuits, Number \| lawsuit			107								107
Product Liability Lawsuits
Loss Contingencies [Line Items]
Product Liability Accrual, Period Expense					$ (71,000)				(95,000)
Product Liability Lawsuits \| IVC April 2023 Agreement
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss					275,000				275,000
Product Liability Lawsuits \| Subsequent Event \| IVC April 2023 Agreement
Loss Contingencies [Line Items]
Payments for Legal Settlements								$ 275,000
Product Liability Lawsuits \| Alameda County [Member] \| Subsequent Event
Loss Contingencies [Line Items]
Loss Contingency, Number of Plaintiffs \| plaintiff			5,171
Shareholder Derivative Litigation [Member]
Loss Contingencies [Line Items]
Gross Insurance Settlement Before Attorney Fees									124,000
Legal Fees									31,000
Proceeds from Insurance Settlement, Operating Activities									$ 93,000
Shareholder Securities Litigation [Member]
Loss Contingencies [Line Items]
Insurance Recoveries					109,000
Gain (Loss) Related to Litigation Settlement					$ 109,000
CVS Health
Loss Contingencies [Line Items]
Long-term Purchase Commitment, Period				10 years