XML 126 R105.htm IDEA: XBRL DOCUMENT v3.25.1

Income Taxes - Tax Examinations (Details) $ in Millions	12 Months Ended
	Mar. 31, 2025 USD ($) issue
Income Tax Examination [Line Items]
Number of tax examination primary issues | issue	3
Income tax examination, estimate of possible loss	$ 544
Potential cash tax payments	623
Interest deduction tax benefit	71
Settlement with Taxing Authority
Income Tax Examination [Line Items]
Reasonably possible reduction in liability for uncertain tax positions in next twelve months	2
Income Tax Examination, Issue One
Income Tax Examination [Line Items]
Tax examination disputed amount	651
Income tax examination, estimate of possible loss	469
Income Tax Examination, Issue Two
Income Tax Examination [Line Items]
Tax examination disputed amount	146
Income tax examination, estimate of possible loss	101
Income Tax Examination, Issue Three
Income Tax Examination [Line Items]
Tax examination disputed amount	165
Income tax examination, estimate of possible loss	$ 124
Tax examination period	8 years

X

- Definition

Income Tax Examination, Disputed Amount

+ References

No definition available.

+ Details

Name:	dxc_IncomeTaxExaminationDisputedAmount
Namespace Prefix:	dxc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Income Tax Examination, Estimate Of Possible Tax Payments

+ References

No definition available.

+ Details

Name:	dxc_IncomeTaxExaminationEstimateOfPossibleTaxPayments
Namespace Prefix:	dxc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Income Tax Examination, Examination Period

+ References

No definition available.

+ Details

Name:	dxc_IncomeTaxExaminationExaminationPeriod
Namespace Prefix:	dxc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Income Tax Examination, Interest Deduction Tax Benefit

+ References

No definition available.

+ Details

Name:	dxc_IncomeTaxExaminationInterestDeductionTaxBenefit
Namespace Prefix:	dxc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Income Tax Examination, Number Of Primary Issues

+ References

No definition available.

+ Details

Name:	dxc_IncomeTaxExaminationNumberOfPrimaryIssues
Namespace Prefix:	dxc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Estimated amount of loss resulting from an adverse tax position.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-15

+ Details

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

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-15

+ Details

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

X

- Definition

The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-15

+ Details

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

X

- Details

Name:	us-gaap_ReasonablyPossibleSignificantChangeInUnrecognizedTaxBenefitsByItemAxis=us-gaap_SettlementWithTaxingAuthorityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	dxc_IncomeTaxExaminationAxis=dxc_IncomeTaxExaminationIssueOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	dxc_IncomeTaxExaminationAxis=dxc_IncomeTaxExaminationIssueTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	dxc_IncomeTaxExaminationAxis=dxc_IncomeTaxExaminationIssueThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: