$DXC
DXC Technology Co Stock $dxc

$dxc Overview Financials Valuation SEC Filings Company Website

2019 Q1 Form 10-K Financial Statement

#000168856820000032 Filed on June 01, 2020

Income Statement

Concept	2019 Q1	2018 Q1	2018
Revenue	$5.280B	$5.584B	$21.73B
YoY Change	-5.44%	34.65%	185.7%
Cost Of Revenue	$3.836B	$4.087B	$16.32B
YoY Change	-6.14%	14.51%	194.05%
Gross Profit	$1.444B	$1.497B	$5.416B
YoY Change	-3.54%	159.0%	163.17%
Gross Profit Margin	27.35%	26.81%	24.92%
Selling, General & Admin	$363.0M	$320.0M	$1.890B
YoY Change	13.44%	-9.35%	47.43%
% of Gross Profit	25.14%	21.38%	34.9%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$509.0M	$627.0M	$2.014B
YoY Change	-18.82%	88.29%	206.08%
% of Gross Profit	35.25%	41.88%	37.19%
Operating Expenses	$944.0M	$737.0M	$20.43B
YoY Change	28.09%	108.78%	162.55%
Operating Profit	$500.0M	$760.0M	$2.989B
YoY Change	-34.21%	-2633.33%	383.66%
Interest Expense	-$3.000M	$118.0M	$320.0M
YoY Change	-102.54%	78.79%	173.5%
% of Operating Profit	-0.6%	15.53%	10.71%
Other Income/Expense, Net
YoY Change
Pretax Income	$354.0M	$588.0M	$1.304B
YoY Change	-39.8%	-1150.0%	-849.43%
Income Tax	$82.00M	$4.000M	-$242.0M
% Of Pretax Income	23.16%	0.68%	-18.56%
Net Earnings	$274.0M	$560.0M	$1.751B
YoY Change	-51.07%	-1613.51%	-1523.58%
Net Earnings / Revenue	5.19%	10.03%	8.06%
Basic Earnings Per Share			$6.15
Diluted Earnings Per Share	$1.009M	$1.928M	$6.04
COMMON SHARES
Basic Shares Outstanding	268.3M shares	285.7M shares	284.9M shares
Diluted Shares Outstanding			289.8M shares

Balance Sheet

Concept	2019 Q1	2018 Q1	2018
SHORT-TERM ASSETS
Cash & Short-Term Investments	$2.899B	$2.593B	$2.593B
YoY Change	11.8%	105.3%	105.3%
Cash & Equivalents	$2.899B	$2.593B	$2.593B
Short-Term Investments
Other Short-Term Assets	$359.0M	$469.0M	$1.546B
YoY Change	-23.45%	304.31%	353.37%
Inventory
Prepaid Expenses	$627.0M	$496.0M
Receivables	$5.181B	$5.481B	$5.481B
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$9.066B	$9.620B	$9.620B
YoY Change	-5.76%	196.0%	196.27%
LONG-TERM ASSETS
Property, Plant & Equipment	$3.179B	$3.363B	$3.363B
YoY Change	-5.47%	272.43%	272.43%
Goodwill	$7.606B	$7.619B
YoY Change	-0.17%	310.73%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$3.429B	$3.207B	$6.140B
YoY Change	6.92%	568.13%	610.65%
Total Long-Term Assets	$20.51B	$24.30B	$24.30B
YoY Change	-15.61%	348.94%	348.69%
TOTAL ASSETS
Total Short-Term Assets	$9.066B	$9.620B	$9.620B
Total Long-Term Assets	$20.51B	$24.30B	$24.30B
Total Assets	$29.57B	$33.92B	$33.92B
YoY Change	-12.82%	291.56%	291.56%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.666B	$1.513B	$1.513B
YoY Change	10.11%	269.02%	269.02%
Accrued Expenses	$3.355B	$3.120B	$3.855B
YoY Change	7.53%	212.63%	212.4%
Deferred Revenue	$1.630B	$1.641B
YoY Change	-0.67%
Short-Term Debt	$694.0M	$863.0M	$863.0M
YoY Change	-19.58%	33.59%	33.59%
Long-Term Debt Due	$766.0M	$439.0M	$1.055B
YoY Change	74.49%	698.18%	1046.74%
Total Short-Term Liabilities	$9.453B	$9.852B	$9.852B
YoY Change	-4.05%	233.97%	233.97%
LONG-TERM LIABILITIES
Long-Term Debt	$5.470B	$6.092B	$6.092B
YoY Change	-10.21%	173.8%	173.8%
Other Long-Term Liabilities	$696.0M	$844.0M	$2.974B
YoY Change	-17.54%	211.44%	230.81%
Total Long-Term Liabilities	$6.166B	$6.936B	$9.066B
YoY Change	-11.1%	177.88%	190.2%
TOTAL LIABILITIES
Total Short-Term Liabilities	$9.453B	$9.852B	$9.852B
Total Long-Term Liabilities	$6.166B	$6.936B	$9.066B
Total Liabilities	$17.85B	$20.08B	$20.43B
YoY Change	-11.13%	209.13%	201.61%
SHAREHOLDERS EQUITY
Retained Earnings	$478.0M	$1.301B
YoY Change	-63.26%	-865.29%
Common Stock	$3.000M	$3.000M
YoY Change	0.0%	200.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$136.0M	$85.00M
YoY Change	60.0%
Treasury Stock Shares	1.789M shares	1.017M shares
Shareholders Equity	$11.40B	$13.49B	$13.49B
YoY Change
Total Liabilities & Shareholders Equity	$29.57B	$33.92B	$33.92B
YoY Change	-12.82%	291.56%	291.56%

Cashflow Statement

Concept	2019 Q1	2018 Q1	2018
OPERATING ACTIVITIES
Net Income	$274.0M	$560.0M	$1.751B
YoY Change	-51.07%	-1613.51%	-1523.58%
Depreciation, Depletion And Amortization	$509.0M	$627.0M	$2.014B
YoY Change	-18.82%	88.29%	206.08%
Cash From Operating Activities	$748.0M	$557.0M	$2.567B
YoY Change	34.29%	-128.74%	314.7%
INVESTING ACTIVITIES
Capital Expenditures	-$256.0M	-$172.0M	$224.0M
YoY Change	48.84%	63.81%	-8.94%
Acquisitions			$203.0M
YoY Change			-53.23%
Other Investing Activities	$365.0M	$121.0M	-$4.000M
YoY Change	201.65%	-66.85%	-106.35%
Cash From Investing Activities	$109.0M	-$51.00M	$719.0M
YoY Change	-313.73%	-28.17%	-227.26%
FINANCING ACTIVITIES
Cash Dividend Paid			$174.0M
YoY Change			123.08%
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net			$1.547B
YoY Change			820.83%
Cash From Financing Activities	-480.0M	-754.0M	-$1.890B
YoY Change	-36.34%	-126.7%	-2132.26%
NET CHANGE
Cash From Operating Activities	748.0M	557.0M	$2.567B
Cash From Investing Activities	109.0M	-51.00M	$719.0M
Cash From Financing Activities	-480.0M	-754.0M	-$1.890B
Net Change In Cash	377.0M	-248.0M	$1.461B
YoY Change	-252.02%	-130.43%	1579.31%
FREE CASH FLOW
Cash From Operating Activities	$748.0M	$557.0M	$2.567B
Capital Expenditures	-$256.0M	-$172.0M	$224.0M
Free Cash Flow	$1.004B	$729.0M	$2.343B
YoY Change	37.72%	-139.77%	528.15%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	130000000	USD
CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--03-31
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0001688568
CY2020	dei	Entity Registrant Name EntityRegistrantName	DXC TECHNOLOGY CORPORATION
CY2020	dxc	Transfersof Financial Assets Accountedforas Sale Securitization Facility Extension Term TransfersofFinancialAssetsAccountedforasSaleSecuritizationFacilityExtensionTerm	P1Y
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.72
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.76
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.84
CY2019Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2019Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	750000000	shares
CY2019Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	270213891	shares
CY2020Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	255674040	shares
CY2020Q1	us-gaap	Finance Lease Liability Current Statement Of Financial Position Extensible List FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	dxc:OtherDebtCurrent
CY2020Q1	us-gaap	Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	us-gaap:LongTermDebtNoncurrent
CY2020Q1	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	dxc:PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetafterAccumulatedDepreciationandAmortization
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019Q1	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2020Q1	us-gaap	Common Stock Value CommonStockValue	3000000	USD
CY2019Q1	us-gaap	Common Stock Value CommonStockValue	3000000	USD
CY2020	dei	Document Type DocumentType	10-K
CY2020Q1	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	us-gaap:OperatingLeaseRightOfUseAsset
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2019	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	USD
CY2020	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	USD
CY2019	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2020	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2019Q1	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2020Q1	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	us-gaap:OperatingLeaseLiabilityCurrent
CY2020Q1	us-gaap	Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	us-gaap:OperatingLeaseLiabilityNoncurrent
CY2019Q1	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000	shares
CY2019Q1	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2020Q1	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2020Q1	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P12M
CY2019	us-gaap	Securitization Financial Asset For Which Transfer Is Accounted As Sale Gain Loss On Sale SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSale	0	USD
CY2019	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	0	USD
CY2020	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	0	USD
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-03-31
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	1-4850
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	NV
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	61-1800317
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	1775 Tysons Boulevard
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	Tysons
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	VA
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	22102
CY2020	dei	City Area Code CityAreaCode	703
CY2020	dei	Local Phone Number LocalPhoneNumber	245-9675
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2020	dei	Entity Small Business EntitySmallBusiness	false
CY2020	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2020	dei	Entity Shell Company EntityShellCompany	false
CY2019Q3	dei	Entity Public Float EntityPublicFloat	7501594766	USD
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CY2019	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	1227000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	1546000000	USD
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	35000000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	236000000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-5358000000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	1262000000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	1782000000	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	11000000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	5000000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	31000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-5369000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	1257000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	1751000000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-20.76
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	4.40
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	5.32
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.13
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.83
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-20.76
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.53
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.15
CY2020	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-20.76
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	4.35
CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	5.23
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.12
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.81
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-20.76
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.47
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.04
CY2020	us-gaap	Profit Loss ProfitLoss	-5358000000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	1262000000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	1782000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-323000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-259000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	197000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-17000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-12000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-11000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	9000000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	21000000	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	-38000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Transition Asset Obligation Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetTransitionAssetObligationNetOfTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Transition Asset Obligation Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetTransitionAssetObligationNetOfTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Transition Asset Obligation Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetTransitionAssetObligationNetOfTax	-1000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	-8000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	-13000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	-14000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	8000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	34000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-25000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-348000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-305000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	220000000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-5706000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	957000000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	2002000000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	22000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	2000000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	31000000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-5728000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	955000000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1971000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	-2000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	-1000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	75000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-5000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-3000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-3000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	2000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	5000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	-8000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Transition Asset Obligation Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetTransitionAssetObligationTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	1000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	2000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	4000000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-5358000000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	1262000000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	1782000000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1960000000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2023000000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2014000000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	6794000000	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020	dxc	Operating Lease Expense Noncash OperatingLeaseExpenseNoncash	698000000	USD
CY2019	dxc	Operating Lease Expense Noncash OperatingLeaseExpenseNoncash	0	USD
CY2018	dxc	Operating Lease Expense Noncash OperatingLeaseExpenseNoncash	0	USD
CY2020	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	-244000000	USD
CY2019	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	143000000	USD
CY2018	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	-220000000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	68000000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	74000000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	93000000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-56000000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	97000000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-842000000	USD
CY2020	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-1000000	USD
CY2019	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	163000000	USD
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-4000000	USD
CY2020	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	3000000	USD
CY2019	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-10000000	USD
CY2018	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	45000000	USD
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-24000000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-30000000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-22000000	USD
CY2020	dxc	Impairment Losses And Contract Writeoffs ImpairmentLossesAndContractWriteoffs	30000000	USD
CY2019	dxc	Impairment Losses And Contract Writeoffs ImpairmentLossesAndContractWriteoffs	0	USD
CY2018	dxc	Impairment Losses And Contract Writeoffs ImpairmentLossesAndContractWriteoffs	41000000	USD
CY2020	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	-4000000	USD
CY2019	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	-10000000	USD
CY2018	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	-4000000	USD
CY2020	dxc	Cash Surrender Value In Excess Of Premiums Paid CashSurrenderValueInExcessOfPremiumsPaid	-12000000	USD
CY2019	dxc	Cash Surrender Value In Excess Of Premiums Paid CashSurrenderValueInExcessOfPremiumsPaid	-11000000	USD
CY2018	dxc	Cash Surrender Value In Excess Of Premiums Paid CashSurrenderValueInExcessOfPremiumsPaid	-11000000	USD
CY2020	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	0	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-11000000	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-4000000	USD
CY2020	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-269000000	USD
CY2019	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	947000000	USD
CY2018	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	464000000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	229000000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	632000000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	196000000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-565000000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-52000000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-96000000	USD
CY2020	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-197000000	USD
CY2019	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-107000000	USD
CY2018	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	303000000	USD
CY2020	dxc	Increase Decreasein Operating Lease Liability IncreaseDecreaseinOperatingLeaseLiability	-698000000	USD
CY2019	dxc	Increase Decreasein Operating Lease Liability IncreaseDecreaseinOperatingLeaseLiability	0	USD
CY2018	dxc	Increase Decreasein Operating Lease Liability IncreaseDecreaseinOperatingLeaseLiability	0	USD
CY2020	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-146000000	USD
CY2019	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-74000000	USD
CY2018	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	130000000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-12000000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-149000000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	38000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2350000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1783000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2567000000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	350000000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	297000000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	224000000	USD
CY2020	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	281000000	USD
CY2019	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	394000000	USD
CY2018	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	328000000	USD
CY2020	us-gaap	Payments To Acquire Software PaymentsToAcquireSoftware	235000000	USD
CY2019	us-gaap	Payments To Acquire Software PaymentsToAcquireSoftware	261000000	USD
CY2018	us-gaap	Payments To Acquire Software PaymentsToAcquireSoftware	211000000	USD
CY2020	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	0	USD
CY2019	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	-65000000	USD
CY2018	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	0	USD
CY2020	dxc	Proceeds From Deferred Purchase Price Receivable ProceedsFromDeferredPurchasePriceReceivable	671000000	USD
CY2019	dxc	Proceeds From Deferred Purchase Price Receivable ProceedsFromDeferredPurchasePriceReceivable	1084000000	USD
CY2018	dxc	Proceeds From Deferred Purchase Price Receivable ProceedsFromDeferredPurchasePriceReceivable	685000000	USD
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	73000000	USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	357000000	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	58000000	USD
CY2020	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	75000000	USD
CY2019	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	0	USD
CY2018	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	0	USD
CY2020	us-gaap	Proceeds From Sale Maturity And Collection Of Shortterm Investments ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments	38000000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-10000000	USD
CY2019	us-gaap	Proceeds From Sale Maturity And Collection Of Shortterm Investments ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments	0	USD
CY2018	us-gaap	Proceeds From Sale Maturity And Collection Of Shortterm Investments ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments	0	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-19000000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-4000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2137000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	69000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	719000000	USD
CY2020	us-gaap	Proceeds From Issuance Of Commercial Paper ProceedsFromIssuanceOfCommercialPaper	4939000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Commercial Paper ProceedsFromIssuanceOfCommercialPaper	2747000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Commercial Paper ProceedsFromIssuanceOfCommercialPaper	2413000000	USD
CY2020	us-gaap	Repayments Of Commercial Paper RepaymentsOfCommercialPaper	5076000000	USD
CY2019	us-gaap	Repayments Of Commercial Paper RepaymentsOfCommercialPaper	2840000000	USD
CY2018	us-gaap	Repayments Of Commercial Paper RepaymentsOfCommercialPaper	2297000000	USD
CY2020	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	1500000000	USD
CY2019	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	0	USD
CY2018	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	0	USD
CY2020	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	USD
CY2019	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	USD
CY2018	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	737000000	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	2198000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	1646000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	621000000	USD
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1039000000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	2625000000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1547000000	USD
CY2020	dxc	Repayments Of Capital Lease Obligations And Asset Financing RepaymentsOfCapitalLeaseObligationsAndAssetFinancing	865000000	USD
CY2019	dxc	Repayments Of Capital Lease Obligations And Asset Financing RepaymentsOfCapitalLeaseObligationsAndAssetFinancing	944000000	USD
CY2018	dxc	Repayments Of Capital Lease Obligations And Asset Financing RepaymentsOfCapitalLeaseObligationsAndAssetFinancing	1060000000	USD
CY2020	dxc	Proceeds From Borrowings For Spin Transaction ProceedsFromBorrowingsForSpinTransaction	0	USD
CY2019	dxc	Proceeds From Borrowings For Spin Transaction ProceedsFromBorrowingsForSpinTransaction	1114000000	USD
CY2018	dxc	Proceeds From Borrowings For Spin Transaction ProceedsFromBorrowingsForSpinTransaction	0	USD
CY2020	dxc	Proceeds From Bond Issuance ProceedsFromBondIssuance	0	USD
CY2019	dxc	Proceeds From Bond Issuance ProceedsFromBondIssuance	753000000	USD
CY2018	dxc	Proceeds From Bond Issuance ProceedsFromBondIssuance	989000000	USD
CY2020	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	11000000	USD
CY2019	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	47000000	USD
CY2018	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	138000000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	16000000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	54000000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	76000000	USD
CY2020	us-gaap	Payments For Repurchase Of Equity PaymentsForRepurchaseOfEquity	736000000	USD
CY2019	us-gaap	Payments For Repurchase Of Equity PaymentsForRepurchaseOfEquity	1344000000	USD
CY2018	us-gaap	Payments For Repurchase Of Equity PaymentsForRepurchaseOfEquity	132000000	USD
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	214000000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	210000000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	174000000	USD
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-45000000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	47000000	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-28000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	657000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1663000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1890000000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-90000000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-19000000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	65000000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	780000000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	170000000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	1461000000	USD
CY2019Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2899000000	USD
CY2018Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2729000000	USD
CY2017Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1268000000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3679000000	USD
CY2019Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2899000000	USD
CY2018Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2729000000	USD
CY2017Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2166000000	USD
CY2018	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	9900000000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	1782000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	220000000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	92000000	USD
CY2018	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	85000000	USD
CY2018	dxc	Stock Repurchasedand Retired During Period Including Accelerated Share Repurchase Adjustment Value StockRepurchasedandRetiredDuringPeriodIncludingAcceleratedShareRepurchaseAdjustmentValue	137000000	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	117000000	USD
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	209000000	USD
CY2018	dxc	Noncontrolling Interest Decrease From Distributions To Noncontrolling Interest Holders And Other NoncontrollingInterestDecreaseFromDistributionsToNoncontrollingInterestHoldersAndOther	-9000000	USD
CY2018Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	13837000000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	1262000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-305000000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	74000000	USD
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	51000000	USD
CY2019	dxc	Stock Repurchasedand Retired During Period Including Accelerated Share Repurchase Adjustment Value StockRepurchasedandRetiredDuringPeriodIncludingAcceleratedShareRepurchaseAdjustmentValue	1339000000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	37000000	USD
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	209000000	USD
CY2019	dxc	Noncontrolling Interest Decrease From Distributions To Noncontrolling Interest Holders And Other NoncontrollingInterestDecreaseFromDistributionsToNoncontrollingInterestHoldersAndOther	-29000000	USD
CY2019	us-gaap	Stockholders Equity Note Spinoff Transaction StockholdersEquityNoteSpinoffTransaction	-1666000000	USD
CY2019Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	11725000000	USD
CY2019Q1	us-gaap	Treasury Stock Shares TreasuryStockShares	1788658	shares
CY2019Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	11725000000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-5358000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-348000000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	70000000	USD
CY2020	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	16000000	USD
CY2020	dxc	Stock Repurchasedand Retired During Period Including Accelerated Share Repurchase Adjustment Value StockRepurchasedandRetiredDuringPeriodIncludingAcceleratedShareRepurchaseAdjustmentValue	736000000	USD
CY2020	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	12000000	USD
CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	219000000	USD
CY2020	dxc	Noncontrolling Interest Decrease From Distributions To Noncontrolling Interest Holders And Other NoncontrollingInterestDecreaseFromDistributionsToNoncontrollingInterestHoldersAndOther	-1000000	USD
CY2020Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5129000000	USD
CY2020Q1	us-gaap	Treasury Stock Shares TreasuryStockShares	2148708	shares
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<div style="line-height:120%;padding-bottom:0px;padding-top:0px;text-align:left;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;font-style:italic;font-weight:bold;">Use of Estimates</span></div><div style="line-height:120%;padding-bottom:0px;padding-top:0px;text-align:left;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;"><br/></span></div><div style="line-height:120%;padding-bottom:0px;padding-top:0px;text-align:left;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">The preparation of the financial statements, in accordance with GAAP, requires the Company's management to make estimates and assumptions that affect reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The Company bases its estimates on assumptions regarding historical experience, currently available information and anticipated developments that it believes are reasonable and appropriate. However, because the use of estimates involves an inherent degree of uncertainty, actual results could differ from those estimates. The severity, magnitude and duration, as well as the economic consequences of the COVID-19 pandemic, are uncertain, rapidly changing and difficult to predict. Therefore, accounting estimates and assumptions may change over time in response to COVID-19 and may change materially in future periods. Estimates are used for, but not limited to, contracts accounted for using the percentage-of-completion method, cash flows used in the evaluation of impairment of goodwill and other long-lived assets, reserves for uncertain tax positions, valuation allowances on deferred tax assets, loss accruals for litigation and obligations related to our pension plans. In the opinion of the Company's management, the accompanying financial statements contain all adjustments necessary, including those of a normal recurring nature, to fairly present the financial statements.</span></div>
CY2020Q1	us-gaap	Capitalized Contract Cost Amortization Period CapitalizedContractCostAmortizationPeriod	P5Y
CY2020	dxc	Increase Decreasein Depreciation IncreaseDecreaseinDepreciation	-225000000	USD
CY2017Q1	us-gaap	Share Price SharePrice	69.01
CY2020	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-5369000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	1222000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	1515000000	USD
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	35000000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	236000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-5369000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	1257000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	1751000000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	258570000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	277540000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	284930000	shares
CY2020	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	3890000	shares
CY2018	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	4840000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	258570000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	281430000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	289770000	shares
CY2020	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-20.76
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	4.40
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	5.32
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.13
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.83
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-20.76
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.53
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.15
CY2020	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-20.76
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	4.35
CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	5.23
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.12
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.81
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-20.76
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.47
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.04
CY2020Q1	us-gaap	Receivables Net Current ReceivablesNetCurrent	4392000000	USD
CY2019Q1	us-gaap	Receivables Net Current ReceivablesNetCurrent	5181000000	USD
CY2019Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	60000000	USD
CY2018Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	40000000	USD
CY2017Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	26000000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	23000000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	19000000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	45000000	USD
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	4000000	USD
CY2019	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	4000000	USD
CY2018	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	37000000	USD
CY2020	dxc	Allowancefor Doubtful Accounts Receivable Other AllowanceforDoubtfulAccountsReceivableOther	-5000000	USD
CY2019	dxc	Allowancefor Doubtful Accounts Receivable Other AllowanceforDoubtfulAccountsReceivableOther	5000000	USD
CY2018	dxc	Allowancefor Doubtful Accounts Receivable Other AllowanceforDoubtfulAccountsReceivableOther	6000000	USD
CY2020Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	74000000	USD
CY2019Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	60000000	USD
CY2018Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	40000000	USD
CY2019	dxc	Transfer Of Financial Assets Accounted For As Sales Billed And Unbilled Receivables Sold During Period TransferOfFinancialAssetsAccountedForAsSalesBilledAndUnbilledReceivablesSoldDuringPeriod	464000000	USD
CY2019	us-gaap	Proceeds From Collection Of Finance Receivables ProceedsFromCollectionOfFinanceReceivables	521000000	USD
CY2019	dxc	Transfer Of Financial Assets Accounted For As Sales Operating Cash Flow Effect TransferOfFinancialAssetsAccountedForAsSalesOperatingCashFlowEffect	-57000000	USD
CY2020	dxc	Lessee Lease Renewal Term LesseeLeaseRenewalTerm	P10Y
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	698000000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	49000000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	46000000	USD
CY2020	us-gaap	Sublease Income SubleaseIncome	45000000	USD
CY2020	us-gaap	Lease Cost LeaseCost	748000000	USD
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	405000000	USD
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	65000000	USD
CY2020	dxc	Finance Lease Cost FinanceLeaseCost	470000000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	698000000	USD
CY2020	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	65000000	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	576000000	USD
CY2020Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1428000000	USD
CY2020Q1	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	1220000000	USD
CY2020Q1	dxc	Lease Rightof Use Asset LeaseRightofUseAsset	2648000000	USD
CY2020Q1	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	482000000	USD
CY2020Q1	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	444000000	USD
CY2020Q1	dxc	Lease Liability Current LeaseLiabilityCurrent	926000000	USD
CY2020Q1	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	1063000000	USD
CY2020Q1	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	602000000	USD
CY2020Q1	dxc	Lease Liability Noncurrent LeaseLiabilityNoncurrent	1665000000	USD
CY2020Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y9M18D
CY2020Q1	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P2Y8M12D
CY2020Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.040
CY2020Q1	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.064
CY2020Q1	us-gaap	Finance Lease Liability Payments Remainder Of Fiscal Year FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear	464000000	USD
CY2020Q1	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	339000000	USD
CY2020Q1	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	195000000	USD
CY2020Q1	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	81000000	USD
CY2020Q1	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	16000000	USD
CY2020Q1	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	0	USD
CY2020Q1	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	1095000000	USD
CY2020Q1	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	49000000	USD
CY2020Q1	us-gaap	Finance Lease Liability FinanceLeaseLiability	1046000000	USD
CY2019Q1	us-gaap	Capital Leases Future Minimum Payments Remainder Of Fiscal Year CapitalLeasesFutureMinimumPaymentsRemainderOfFiscalYear	509000000	USD
CY2019Q1	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	310000000	USD
CY2019Q1	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	212000000	USD
CY2019Q1	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	128000000	USD
CY2019Q1	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	36000000	USD
CY2019Q1	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	0	USD
CY2019Q1	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	1195000000	USD
CY2019Q1	dxc	Capital Leases Future Minimum Payments Executory Costsand Interest Includedin Payments CapitalLeasesFutureMinimumPaymentsExecutoryCostsandInterestIncludedinPayments	68000000	USD
CY2019Q1	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	1127000000	USD
CY2020Q1	dxc	Concentration Risk Credit Risk Number Of Counterparties ConcentrationRiskCreditRiskNumberOfCounterparties	0	counterparty
CY2020Q1	dxc	Property Plantand Equipmentand Finance Lease Rightof Use Assetbefore Accumulated Depreciationand Amortizatio PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetbeforeAccumulatedDepreciationandAmortizatio	7365000000	USD
CY2019Q1	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	7137000000	USD
CY2020Q1	dxc	Property Plantand Equipmentand Finance Lease Rightof Use Asset Accumulated Depreciationand Amortization PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetAccumulatedDepreciationandAmortization	3818000000	USD
CY2019Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	3958000000	USD
CY2020Q1	dxc	Property Plantand Equipmentand Finance Lease Rightof Use Assetafter Accumulated Depreciationand Amortization PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetafterAccumulatedDepreciationandAmortization	3547000000	USD
CY2019Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	3179000000	USD
CY2020	us-gaap	Depreciation Depreciation	643000000	USD
CY2019	us-gaap	Depreciation Depreciation	820000000	USD
CY2018	us-gaap	Depreciation Depreciation	709000000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	10078000000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	4347000000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	5731000000	USD
CY2019Q1	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	9338000000	USD
CY2019Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	3399000000	USD
CY2019Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	5939000000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1299000000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1148000000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1086000000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	1004000000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	915000000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	835000000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	750000000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	662000000	USD
CY2019Q1	us-gaap	Goodwill Goodwill	7606000000	USD
CY2020	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	1358000000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	6794000000	USD
CY2020	us-gaap	Goodwill Translation And Purchase Accounting Adjustments GoodwillTranslationAndPurchaseAccountingAdjustments	-153000000	USD
CY2020Q1	us-gaap	Goodwill Gross GoodwillGross	11573000000	USD
CY2020Q1	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	9556000000	USD
CY2020Q1	us-gaap	Goodwill Goodwill	2017000000	USD
CY2018Q1	us-gaap	Goodwill Goodwill	7619000000	USD
CY2019	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	228000000	USD
CY2019	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	12000000	USD
CY2019	us-gaap	Goodwill Translation And Purchase Accounting Adjustments GoodwillTranslationAndPurchaseAccountingAdjustments	-229000000	USD
CY2019Q1	us-gaap	Goodwill Gross GoodwillGross	10368000000	USD
CY2019Q1	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	2762000000	USD
CY2019Q1	us-gaap	Goodwill Goodwill	7606000000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	6794000000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-2928000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	511000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	454000000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-2300000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	1004000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	850000000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-5228000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1515000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1304000000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	3000000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-50000000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	392000000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	16000000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	42000000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	16000000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	167000000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	218000000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	247000000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	186000000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	210000000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	655000000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-125000000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	95000000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-899000000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	17000000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	23000000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-59000000	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	52000000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-40000000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	61000000	USD
CY2020	dxc	Deferred Income Tax Expense Benefit As Adjusted DeferredIncomeTaxExpenseBenefitAsAdjusted	-56000000	USD
CY2019	dxc	Deferred Income Tax Expense Benefit As Adjusted DeferredIncomeTaxExpenseBenefitAsAdjusted	78000000	USD
CY2018	dxc	Deferred Income Tax Expense Benefit As Adjusted DeferredIncomeTaxExpenseBenefitAsAdjusted	-897000000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	130000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	288000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-242000000	USD
CY2020	us-gaap	Tax Cuts And Jobs Act Of2017 Transition Tax For Accumulated Foreign Earnings Income Tax Expense TaxCutsAndJobsActOf2017TransitionTaxForAccumulatedForeignEarningsIncomeTaxExpense	-31000000	USD
CY2019	us-gaap	Tax Cuts And Jobs Act Of2017 Transition Tax For Accumulated Foreign Earnings Income Tax Expense TaxCutsAndJobsActOf2017TransitionTaxForAccumulatedForeignEarningsIncomeTaxExpense	-44000000	USD
CY2018	us-gaap	Tax Cuts And Jobs Act Of2017 Transition Tax For Accumulated Foreign Earnings Income Tax Expense TaxCutsAndJobsActOf2017TransitionTaxForAccumulatedForeignEarningsIncomeTaxExpense	332000000	USD
CY2020	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	2000000	USD
CY2019	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	1000000	USD
CY2018	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	2000000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.315
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.014
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.032
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.020
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.119
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.184
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.057
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Impairment Losses EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses	-0.283
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Impairment Losses EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses	0
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Impairment Losses EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses	0
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.121
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.169
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.077
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	-0.026
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.006
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.076
CY2020	dxc	Effective Income Tax Rate Reconciliation Arbitration Award Percent EffectiveIncomeTaxRateReconciliationArbitrationAwardPercent	-0.036
CY2019	dxc	Effective Income Tax Rate Reconciliation Arbitration Award Percent EffectiveIncomeTaxRateReconciliationArbitrationAwardPercent	0
CY2018	dxc	Effective Income Tax Rate Reconciliation Arbitration Award Percent EffectiveIncomeTaxRateReconciliationArbitrationAwardPercent	0
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.011
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.015
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.002
CY2020	dxc	Effective Income Tax Rate Reconciliation Withholding Taxes Percent EffectiveIncomeTaxRateReconciliationWithholdingTaxesPercent	-0.009
CY2019	dxc	Effective Income Tax Rate Reconciliation Withholding Taxes Percent EffectiveIncomeTaxRateReconciliationWithholdingTaxesPercent	0.035
CY2018	dxc	Effective Income Tax Rate Reconciliation Withholding Taxes Percent EffectiveIncomeTaxRateReconciliationWithholdingTaxesPercent	0.023
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	-0.004
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	0.024
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	0.021
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0.001
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0.011
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0.030
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	-0.001
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.001
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.010
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	0.007
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	-0.034
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	-0.406
CY2020	dxc	Effective Income Tax Rate Reconciliation Change In Reinvestment Assertion Percent EffectiveIncomeTaxRateReconciliationChangeInReinvestmentAssertionPercent	0
CY2019	dxc	Effective Income Tax Rate Reconciliation Change In Reinvestment Assertion Percent EffectiveIncomeTaxRateReconciliationChangeInReinvestmentAssertionPercent	-0.031
CY2019	dxc	Effective Income Tax Rate Reconciliation Loss Of Attributes Due To Merger Percent EffectiveIncomeTaxRateReconciliationLossOfAttributesDueToMergerPercent	0
CY2018	dxc	Effective Income Tax Rate Reconciliation Loss Of Attributes Due To Merger Percent EffectiveIncomeTaxRateReconciliationLossOfAttributesDueToMergerPercent	0.051
CY2018	dxc	Effective Income Tax Rate Reconciliation Change In Reinvestment Assertion Percent EffectiveIncomeTaxRateReconciliationChangeInReinvestmentAssertionPercent	0.033
CY2020	dxc	Effective Income Tax Rate Reconciliation Loss Of Attributes Due To Merger Percent EffectiveIncomeTaxRateReconciliationLossOfAttributesDueToMergerPercent	0
CY2020	dxc	Effective Income Tax Rate Reconciliation Prepaid Tax Asset Amortization EffectiveIncomeTaxRateReconciliationPrepaidTaxAssetAmortization	0
CY2019	dxc	Effective Income Tax Rate Reconciliation Prepaid Tax Asset Amortization EffectiveIncomeTaxRateReconciliationPrepaidTaxAssetAmortization	0
CY2018	dxc	Effective Income Tax Rate Reconciliation Prepaid Tax Asset Amortization EffectiveIncomeTaxRateReconciliationPrepaidTaxAssetAmortization	0.003
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.007
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.014
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.025
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.190
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.186
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	1482000000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Impairment Losses EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses	-0.283
CY2020	dxc	Effective Income Tax Rate Reconciliation Arbitration Award Amount EffectiveIncomeTaxRateReconciliationArbitrationAwardAmount	186000000	USD
CY2020	dxc	Effective Income Tax Rate Reconciliation Arbitration Award Percent EffectiveIncomeTaxRateReconciliationArbitrationAwardPercent	-0.036
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	631000000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.121
CY2020	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	135000000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	-0.026
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	256000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.169
CY2019	dxc	Effective Income Tax Rate Reconciliation Changein Deferred Revenue Accounting Method Amount EffectiveIncomeTaxRateReconciliationChangeinDeferredRevenueAccountingMethodAmount	66000000	USD
CY2019	dxc	Effective Income Tax Rate Reconciliation Change In Deferred Revenue Accounting Method Percent EffectiveIncomeTaxRateReconciliationChangeInDeferredRevenueAccountingMethodPercent	0.043
CY2018	dxc	Effective Income Tax Rate Reconciliation Foreign Subsidiary Basis Difference Amount EffectiveIncomeTaxRateReconciliationForeignSubsidiaryBasisDifferenceAmount	-554000000	USD
CY2018	dxc	Effective Income Tax Rate Reconciliation Foreign Subsidiary Basis Difference Percent EffectiveIncomeTaxRateReconciliationForeignSubsidiaryBasisDifferencePercent	-0.425
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Transition Tax On Accumulated Foreign Earnings Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017TransitionTaxOnAccumulatedForeignEarningsAmount	361000000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Transition Tax On Accumulated Foreign Earnings Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017TransitionTaxOnAccumulatedForeignEarningsPercent	0.277
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-338000000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	-0.259
CY2020Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	0	USD
CY2019Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	79000000	USD
CY2020Q1	dxc	Total Of Deferred Tax Assets Operating Loss Carryforwards And Deferred Tax Assets Tax Credit Carryforwards TotalOfDeferredTaxAssetsOperatingLossCarryforwardsAndDeferredTaxAssetsTaxCreditCarryforwards	2516000000	USD
CY2019Q1	dxc	Total Of Deferred Tax Assets Operating Loss Carryforwards And Deferred Tax Assets Tax Credit Carryforwards TotalOfDeferredTaxAssetsOperatingLossCarryforwardsAndDeferredTaxAssetsTaxCreditCarryforwards	1917000000	USD
CY2020Q1	dxc	Deferred Tax Assets Accrued Interest DeferredTaxAssetsAccruedInterest	12000000	USD
CY2019Q1	dxc	Deferred Tax Assets Accrued Interest DeferredTaxAssetsAccruedInterest	16000000	USD
CY2020Q1	dxc	Deferred Tax Assets Leasing Arrangements DeferredTaxAssetsLeasingArrangements	370000000	USD
CY2019Q1	dxc	Deferred Tax Assets Leasing Arrangements DeferredTaxAssetsLeasingArrangements	0	USD
CY2020Q1	dxc	Deferred Tax Assets Contract Accounting DeferredTaxAssetsContractAccounting	126000000	USD
CY2019Q1	dxc	Deferred Tax Assets Contract Accounting DeferredTaxAssetsContractAccounting	130000000	USD
CY2020Q1	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	144000000	USD
CY2019Q1	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	139000000	USD
CY2020Q1	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	3168000000	USD
CY2019Q1	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	2281000000	USD
CY2020Q1	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	2162000000	USD
CY2019Q1	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	1575000000	USD
CY2020Q1	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1006000000	USD
CY2019Q1	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	706000000	USD
CY2020Q1	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	850000000	USD
CY2019Q1	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	994000000	USD
CY2020Q1	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	343000000	USD
CY2019Q1	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	0	USD
CY2020Q1	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	68000000	USD
CY2019Q1	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	61000000	USD
CY2020Q1	dxc	Deferred Tax Liabilities Deferred Expense Employee Benefits DeferredTaxLiabilitiesDeferredExpenseEmployeeBenefits	48000000	USD
CY2019Q1	dxc	Deferred Tax Liabilities Deferred Expense Employee Benefits DeferredTaxLiabilitiesDeferredExpenseEmployeeBenefits	0	USD
CY2020Q1	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	150000000	USD
CY2019Q1	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	63000000	USD
CY2020Q1	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1459000000	USD
CY2019Q1	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1118000000	USD
CY2020Q1	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	453000000	USD
CY2019Q1	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	412000000	USD
CY2020Q1	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	58000000	USD
CY2019Q1	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	113000000	USD
CY2020Q1	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	58000000	USD
CY2019Q1	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	113000000	USD
CY2020Q1	us-gaap	Income Taxes Receivable Noncurrent IncomeTaxesReceivableNoncurrent	180000000	USD
CY2019Q1	us-gaap	Income Taxes Receivable Noncurrent IncomeTaxesReceivableNoncurrent	137000000	USD
CY2020Q1	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	265000000	USD
CY2019Q1	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	355000000	USD
CY2020Q1	dxc	Income Tax Receivable And Deferred Income Tax Assets Noncurrent IncomeTaxReceivableAndDeferredIncomeTaxAssetsNoncurrent	445000000	USD
CY2019Q1	dxc	Income Tax Receivable And Deferred Income Tax Assets Noncurrent IncomeTaxReceivableAndDeferredIncomeTaxAssetsNoncurrent	492000000	USD
CY2020Q1	dxc	Income Tax Assets Currentand Noncurrent IncomeTaxAssetsCurrentandNoncurrent	503000000	USD
CY2019Q1	dxc	Income Tax Assets Currentand Noncurrent IncomeTaxAssetsCurrentandNoncurrent	605000000	USD
CY2020Q1	us-gaap	Liability For Uncertain Tax Positions Current LiabilityForUncertainTaxPositionsCurrent	12000000	USD
CY2019Q1	us-gaap	Liability For Uncertain Tax Positions Current LiabilityForUncertainTaxPositionsCurrent	0	USD
CY2020Q1	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	75000000	USD
CY2019Q1	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	208000000	USD
CY2020Q1	dxc	Liabilities For Income Tax Uncertainty And Accrued Income Taxes Current LiabilitiesForIncomeTaxUncertaintyAndAccruedIncomeTaxesCurrent	87000000	USD
CY2019Q1	dxc	Liabilities For Income Tax Uncertainty And Accrued Income Taxes Current LiabilitiesForIncomeTaxUncertaintyAndAccruedIncomeTaxesCurrent	208000000	USD
CY2020Q1	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	718000000	USD
CY2019Q1	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	767000000	USD
CY2020Q1	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	168000000	USD
CY2019Q1	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	201000000	USD
CY2020Q1	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	271000000	USD
CY2019Q1	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	216000000	USD
CY2020Q1	dxc	Deferred Tax Liabilities And Liabilities For Income Tax Uncertainty Noncurrent DeferredTaxLiabilitiesAndLiabilitiesForIncomeTaxUncertaintyNoncurrent	1157000000	USD
CY2019Q1	dxc	Deferred Tax Liabilities And Liabilities For Income Tax Uncertainty Noncurrent DeferredTaxLiabilitiesAndLiabilitiesForIncomeTaxUncertaintyNoncurrent	1184000000	USD
CY2020Q1	dxc	Income Tax Liabilities Current And Noncurrent IncomeTaxLiabilitiesCurrentAndNoncurrent	1244000000	USD
CY2019Q1	dxc	Income Tax Liabilities Current And Noncurrent IncomeTaxLiabilitiesCurrentAndNoncurrent	1392000000	USD
CY2020Q1	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	2200000000	USD
CY2020	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	587000000	USD
CY2020	dxc	Valuation Allowance Deferred Tax Asset Increasefor Goodwill Impairment Amount ValuationAllowanceDeferredTaxAssetIncreaseforGoodwillImpairmentAmount	637000000	USD
CY2020	dxc	Valuation Allowance Deferred Tax Asset Write Down Amount ValuationAllowanceDeferredTaxAssetWriteDownAmount	6000000	USD
CY2020	dxc	Valuation Allowance Deferred Tax Asset Foreign Currency Translation Amount ValuationAllowanceDeferredTaxAssetForeignCurrencyTranslationAmount	-44000000	USD
CY2020	us-gaap	Income Tax Holiday Aggregate Dollar Amount IncomeTaxHolidayAggregateDollarAmount	0	USD
CY2019	us-gaap	Income Tax Holiday Aggregate Dollar Amount IncomeTaxHolidayAggregateDollarAmount	2000000	USD
CY2018	us-gaap	Income Tax Holiday Aggregate Dollar Amount IncomeTaxHolidayAggregateDollarAmount	5000000	USD
CY2020	dxc	Income Tax Holiday Aggregate Dollar Amount Per Share IncomeTaxHolidayAggregateDollarAmountPerShare	0.0
CY2019	dxc	Income Tax Holiday Aggregate Dollar Amount Per Share IncomeTaxHolidayAggregateDollarAmountPerShare	0.01
CY2018	dxc	Income Tax Holiday Aggregate Dollar Amount Per Share IncomeTaxHolidayAggregateDollarAmountPerShare	0.02
CY2019Q2	dxc	Increase Decreasein Foreign Earningstobe Repatriated IncreaseDecreaseinForeignEarningstobeRepatriated	-492000000	USD
CY2020Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	253000000	USD
CY2019Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	165000000	USD
CY2020Q1	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	45000000	USD
CY2019Q1	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	41000000	USD
CY2020Q1	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued	21000000	USD
CY2019Q1	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued	25000000	USD
CY2020Q1	dxc	Unrecognized Tax Benefit Offsetto Receivable UnrecognizedTaxBenefitOffsettoReceivable	-24000000	USD
CY2019Q1	dxc	Unrecognized Tax Benefit Offsetto Receivable UnrecognizedTaxBenefitOffsettoReceivable	0	USD
CY2020Q1	dxc	Total Liability For Uncertain Tax Positions Tax Attributes Component TotalLiabilityForUncertainTaxPositionsTaxAttributesComponent	-12000000	USD
CY2019Q1	dxc	Total Liability For Uncertain Tax Positions Tax Attributes Component TotalLiabilityForUncertainTaxPositionsTaxAttributesComponent	-15000000	USD
CY2020Q1	dxc	Total Liability For Uncertain Tax Positions TotalLiabilityForUncertainTaxPositions	283000000	USD
CY2019Q1	dxc	Total Liability For Uncertain Tax Positions TotalLiabilityForUncertainTaxPositions	216000000	USD
CY2019Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	165000000	USD
CY2018Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	219000000	USD
CY2017Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	192000000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	74000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	4000000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	10000000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	9000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	27000000	USD
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CY2020	us-gaap	Restructuring Charges RestructuringCharges	252000000	USD
CY2019	us-gaap	Restructuring Charges RestructuringCharges	465000000	USD
CY2018	us-gaap	Restructuring Charges RestructuringCharges	789000000	USD
CY2020	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	318000000	USD
CY2019	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	401000000	USD
CY2018	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	359000000	USD
CY2020	dxc	Amortization Of Acquired Intangible Assets AmortizationOfAcquiredIntangibleAssets	583000000	USD
CY2019	dxc	Amortization Of Acquired Intangible Assets AmortizationOfAcquiredIntangibleAssets	539000000	USD
CY2018	dxc	Amortization Of Acquired Intangible Assets AmortizationOfAcquiredIntangibleAssets	526000000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	6794000000	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	632000000	USD
CY2019	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	0	USD
CY2018	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	0	USD
CY2020	dxc	Pension Expense Fair Value Adjustment PensionExpenseFairValueAdjustment	244000000	USD
CY2019	dxc	Pension Expense Fair Value Adjustment PensionExpenseFairValueAdjustment	-143000000	USD
CY2018	dxc	Pension Expense Fair Value Adjustment PensionExpenseFairValueAdjustment	220000000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-5228000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1515000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1304000000	USD
CY2020Q1	us-gaap	Noncurrent Assets NoncurrentAssets	3547000000	USD
CY2019Q1	us-gaap	Noncurrent Assets NoncurrentAssets	3179000000	USD
CY2018Q1	us-gaap	Noncurrent Assets NoncurrentAssets	3363000000	USD
CY2020	us-gaap	Revenues Revenues	19577000000	USD
CY2019	us-gaap	Revenues Revenues	20753000000	USD
CY2018	us-gaap	Revenues Revenues	21733000000	USD
CY2020Q1	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	24000000000.0	USD
CY2020Q1	us-gaap	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.42
CY2020Q1	us-gaap	Accounts Receivable Net AccountsReceivableNet	3059000000	USD
CY2019Q1	us-gaap	Accounts Receivable Net AccountsReceivableNet	3232000000	USD
CY2020Q1	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	454000000	USD
CY2019Q1	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	390000000	USD
CY2020Q1	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	1756000000	USD
CY2019Q1	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	1886000000	USD
CY2019Q1	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	1886000000	USD
CY2018Q1	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	2053000000	USD
CY2020	dxc	Contract With Customer Liability Increase From Cash Receipts ContractWithCustomerLiabilityIncreaseFromCashReceipts	2910000000	USD
CY2019	dxc	Contract With Customer Liability Increase From Cash Receipts ContractWithCustomerLiabilityIncreaseFromCashReceipts	2681000000	USD
CY2020	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	-2925000000	USD
CY2019	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	-2664000000	USD
CY2020	dxc	Contract With Customer Liability Currency Translation Adjustment ContractWithCustomerLiabilityCurrencyTranslationAdjustment	-48000000	USD
CY2019	dxc	Contract With Customer Liability Currency Translation Adjustment ContractWithCustomerLiabilityCurrencyTranslationAdjustment	-167000000	USD
CY2020	dxc	Contract With Customer Liability Other ContractWithCustomerLiabilityOther	-67000000	USD
CY2019	dxc	Contract With Customer Liability Other ContractWithCustomerLiabilityOther	-17000000	USD
CY2020Q1	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	1756000000	USD
CY2019Q1	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	1886000000	USD
CY2020	us-gaap	Restructuring Charges RestructuringCharges	252000000	USD
CY2019	us-gaap	Restructuring Charges RestructuringCharges	465000000	USD
CY2018	us-gaap	Restructuring Charges RestructuringCharges	789000000	USD
CY2020Q1	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	145000000	USD
CY2019Q1	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	273000000	USD
CY2020Q1	us-gaap	Restructuring Reserve Noncurrent RestructuringReserveNoncurrent	35000000	USD
CY2019Q1	us-gaap	Restructuring Reserve Noncurrent RestructuringReserveNoncurrent	106000000	USD
CY2020Q1	us-gaap	Restructuring Reserve RestructuringReserve	180000000	USD
CY2019Q1	us-gaap	Restructuring Reserve RestructuringReserve	379000000	USD
CY2020Q1	dxc	Long Term Purchase Commitment Amount Year One LongTermPurchaseCommitmentAmountYearOne	1911000000	USD
CY2020Q1	dxc	Long Term Purchase Commitment Amount Year Two LongTermPurchaseCommitmentAmountYearTwo	645000000	USD
CY2020Q1	dxc	Long Term Purchase Commitment Amount Year Three LongTermPurchaseCommitmentAmountYearThree	535000000	USD
CY2020Q1	dxc	Long Term Purchase Commitment Amount Year Four LongTermPurchaseCommitmentAmountYearFour	261000000	USD
CY2020Q1	dxc	Long Term Purchase Commitment Amount Year Five LongTermPurchaseCommitmentAmountYearFive	25000000	USD
CY2020Q1	dxc	Long Term Purchase Commitment Amount Thereafter LongTermPurchaseCommitmentAmountThereafter	0	USD
CY2020	us-gaap	Long Term Purchase Commitment Amount LongTermPurchaseCommitmentAmount	3377000000	USD
CY2020Q1	dxc	Expiration Of Guarantee In Third Fiscal Year And Thereafter ExpirationOfGuaranteeInThirdFiscalYearAndThereafter	507000000	USD
CY2020Q1	dxc	Total Guarantees Outstanding TotalGuaranteesOutstanding	1315000000	USD
CY2020	dxc	Expiration Of Financial Guarantees And Standby Letters Of Credit Outstanding ExpirationOfFinancialGuaranteesAndStandbyLettersOfCreditOutstanding	<div style="line-height:120%;padding-bottom:0px;padding-top:0px;text-align:left;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">The following table summarizes the expiration of the Company’s financial guarantees and stand-by letters of credit outstanding as of </span><span style="font-family:Arial;font-size:10pt;">March 31, 2020</span><span style="font-family:Arial;font-size:10pt;">:</span></div><div style="line-height:120%;padding-bottom:0px;padding-top:0px;text-align:center;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="17"/></tr><tr><td style="width:40%;"/><td style="width:1%;"/><td style="width:1%;"/><td style="width:12%;"/><td style="width:1%;"/><td style="width:1%;"/><td style="width:1%;"/><td style="width:12%;"/><td style="width:1%;"/><td style="width:1%;"/><td style="width:1%;"/><td style="width:12%;"/><td style="width:1%;"/><td style="width:1%;"/><td style="width:1%;"/><td style="width:12%;"/><td style="width:1%;"/></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;">(in millions)</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;font-weight:bold;">Fiscal 2021</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;font-weight:bold;">Fiscal 2022</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;font-weight:bold;">Fiscal 2023 and Thereafter</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;font-weight:bold;">Totals</span></div></td></tr><tr><td style="vertical-align:middle;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;">Surety bonds</span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;"><div style="text-align:left;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;">$</span></div></td><td style="vertical-align:middle;background-color:#cceeff;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;"><span>374</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;"><div style="text-align:left;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;">$</span></div></td><td style="vertical-align:middle;background-color:#cceeff;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;"><span>83</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;"><div style="text-align:left;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;">$</span></div></td><td style="vertical-align:middle;background-color:#cceeff;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;"><span>85</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;"><div style="text-align:left;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;">$</span></div></td><td style="vertical-align:middle;background-color:#cceeff;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;"><span>542</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;">Letters of credit</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;"><span>102</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;"><span>96</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;"><span>397</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;"><span>595</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:middle;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;">Stand-by letters of credit</span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:middle;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;"><span>75</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:middle;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;"><span>78</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:middle;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;"><span>25</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:middle;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;"><span>178</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:middle;padding-left:20px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;">Totals</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:middle;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:left;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;">$</span></div></td><td style="vertical-align:middle;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;"><span>551</span></span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:middle;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:left;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;">$</span></div></td><td style="vertical-align:middle;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;"><span>257</span></span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:middle;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:left;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;">$</span></div></td><td style="vertical-align:middle;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;"><span>507</span></span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:middle;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:left;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;">$</span></div></td><td style="vertical-align:middle;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:9pt;"><span style="font-family:Arial;font-size:9pt;"><span>1,315</span></span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr></table></div><span style="font-family:Arial;font-size:10pt;"><br/></span></div>
CY2020Q1	dxc	Expiration Of Guarantee In Next Fiscal Year ExpirationOfGuaranteeInNextFiscalYear	551000000	USD
CY2020Q1	dxc	Expiration Of Guarantee In Second Fiscal Year ExpirationOfGuaranteeInSecondFiscalYear	257000000	USD
CY2017Q1	dxc	Loss Contingency Number Of Partially Owned Joint Ventures Involvedin Possible Sanctions Law Violations LossContingencyNumberOfPartiallyOwnedJointVenturesInvolvedinPossibleSanctionsLawViolations	2	joint_venture

Files In Submission

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0001688568-20-000032-index-headers.html	Edgar Link	pending
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0001688568-20-000032.txt	Edgar Link	pending
0001688568-20-000032-xbrl.zip	Edgar Link	pending
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$DXC
DXC Technology Co Stock $dxc

2019 Q1 Form 10-K Financial Statement

#000168856820000032 Filed on June 01, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$DXC DXC Technology Co Stock $dxc

2019 Q1 Form 10-K Financial Statement

#000168856820000032 Filed on June 01, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$DXC
DXC Technology Co Stock $dxc