DXC Technology (DXC) 10-K 28 May 21 2021 FY Annual report Financial data

Cover Page

Cover Page - USD ($)	12 Months Ended
	Mar. 31, 2021	May 24, 2021	Sep. 30, 2020
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Mar. 31, 2021
Current Fiscal Year End Date	--03-31
Document Transition Report	false
Entity File Number	1-4850
Entity Registrant Name	DXC Technology Co
Entity Incorporation, State or Country Code	NV
Entity Tax Identification Number	61-1800317
Entity Address, Address Line One	1775 Tysons Boulevard
Entity Address, City or Town	Tysons
Entity Address, State or Province	VA
Entity Address, Postal Zip Code	22102
City Area Code	703
Local Phone Number	245-9675
Entity Well-Known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 4,531,553,903
Entity Common Stock, Shares Outstanding		254,806,966
Documents Incorporated by Reference	Portions of the registrant's definitive Proxy Statement relating to its 2021 Annual Meeting of Stockholders (the "2021 Proxy Statement"), which will be filed with the Securities and Exchange Commission pursuant to Regulation 14A within 120 days after the registrant's fiscal year end of March 31, 2021, are incorporated by reference into Part III of this Annual Report on Form 10-K where indicated.
Entity Central Index Key	0001688568
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Amendment Flag	false
Common Stock, $0.01 par value per share
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, $0.01 par value per share
Trading Symbol	DXC
Security Exchange Name	NYSE
2.750% Senior Notes Due 2025
Entity Information [Line Items]
Title of 12(b) Security	2.750% Senior Notes Due 2025
Trading Symbol	DXC 25
Security Exchange Name	NYSE
1.750% Senior Notes Due 2026
Entity Information [Line Items]
Title of 12(b) Security	1.750% Senior Notes Due 2026
Trading Symbol	DXC 26
Security Exchange Name	NYSE

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Current assets:
Cash and cash equivalents	$ 2,968	$ 3,679
Receivables and contract assets, net of allowance for doubtful accounts of $91 and $74	4,156	4,392
Prepaid expenses	567	646
Other current assets	357	270
Assets held for sale	160	0
Total current assets	8,208	8,987
Intangible assets, net of accumulated amortization of $4,422 and $4,347	4,043	5,731
Operating right-of-use assets, net	1,366	1,428
Goodwill	641	2,017
Deferred income taxes, net	289	265
Property and equipment, net of accumulated depreciation of $4,121 and $3,818	2,946	3,547
Other assets	4,192	4,031
Assets held for sale - non-current	353	0
Total Assets	22,038	26,006
Current liabilities:
Short-term debt and current maturities of long-term debt	1,167	1,276
Accounts payable	914	1,598
Accrued payroll and related costs	698	630
Current operating lease liabilities	418	482
Accrued expenses and other current liabilities	3,358	2,801
Deferred revenue and advance contract payments	1,079	1,021
Income taxes payable	398	87
Liabilities related to assets held for sale	118	0
Total current liabilities	8,150	7,895
Long-term debt, net of current maturities	4,345	8,672
Non-current deferred revenue	622	735
Non-current operating lease liabilities	1,038	1,063
Non-current pension obligations	793	761
Non-current income tax liabilities and deferred tax liabilities	854	1,157
Other long-term liabilities	908	594
Liabilities related to assets held for sale - non-current	20	0
Total Liabilities	16,730	20,877
Commitments and contingencies
DXC stockholders’ equity:
Preferred stock, par value $0.01 per share; authorized 1,000,000 shares; none issued as of March 31, 2021 and March 31, 2020	0	0
Common stock, par value $0.01 per share; authorized 750,000,000 shares; issued 257,052,533 as of March 31, 2021 and 255,674,040 as of March 31, 2020	3	3
Additional paid-in capital	10,761	10,714
Accumulated deficit	(5,331)	(5,177)
Accumulated other comprehensive loss	(302)	(603)
Treasury stock, at cost, 2,458,027 and 2,148,708 shares as of March 31, 2021 and March 31, 2020	(158)	(152)
Total DXC stockholders’ equity	4,973	4,785
Non-controlling interest in subsidiaries	335	344
Total Equity	5,308	5,129
Total Liabilities and Equity	$ 22,038	$ 26,006

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Current assets:
Allowance for doubtful accounts	$ 91	$ 74
Accumulated amortization	4,422	4,347
Accumulated depreciation	$ 4,121	$ 3,818
CSC stockholders' equity:
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	750,000,000	750,000,000
Common stock, issued (in shares)	257,052,533	255,674,040
Common stock in treasury, at cost (in shares)	2,458,027	2,148,708

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Revenues	$ 17,729	$ 19,577	$ 20,753
Costs of services (excludes depreciation and amortization and restructuring costs)	14,086	14,901	14,946
Selling, general and administrative (excludes depreciation and amortization and restructuring costs)	2,066	2,050	1,959
Depreciation and amortization	1,970	1,942	1,968
Goodwill impairment losses	0	6,794	0
Restructuring costs	551	252	465
Interest expense	361	383	334
Interest income	(98)	(165)	(128)
Debt extinguishment costs	41	0	0
Gain on disposition of businesses	(2,004)	0	0
Gain on arbitration award	0	(632)	0
Other expense (income), net	102	(720)	(306)
Total costs and expenses	17,075	24,805	19,238
Income (loss) from continuing operations, before taxes	654	(5,228)	1,515
Income tax expense	800	130	288
(Loss) income from continuing operations	(146)	(5,358)	1,227
Income from discontinued operations, net of taxes	0	0	35
Net (loss) income	(146)	(5,358)	1,262
Less: net income attributable to non-controlling interest, net of tax	3	11	5
Net (loss) income attributable to DXC common stockholders	$ (149)	$ (5,369)	$ 1,257
(Loss) income per common share - Basic:
Continuing operations (in dollars per share)	$ (0.59)	$ (20.76)	$ 4.40
Discontinued operations (in dollars per share)	0	0	0.13
Basic EPS (in dollars per share)	(0.59)	(20.76)	4.53
(Loss) income per common share - Diluted:
Continuing operations (in dollars per share)	(0.59)	(20.76)	4.35
Discontinued operations (in dollars per share)	0	0	0.12
Diluted EPS (in dollars per share)	$ (0.59)	$ (20.76)	$ 4.47

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions		12 Months Ended
		Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net (loss) income		$ (146)	$ (5,358)	$ 1,262
Other comprehensive income (loss), net of taxes:
Foreign currency translation adjustments, net of tax	[1]	300	(323)	(259)
Cash flow hedges adjustments, net of tax	[2]	19	(17)	(12)
Available-for-sale securities, net of tax	[3]	(9)	0	0
Pension and other post-retirement benefit plans, net of tax:
Prior service cost, net of tax	[4]	7	0	(21)
Amortization of prior service cost, net of tax	[5]	(13)	(8)	(13)
Pension and other post-retirement benefit plans, net of tax		(6)	(8)	(34)
Other comprehensive income (loss), net of taxes		304	(348)	(305)
Comprehensive income (loss)		158	(5,706)	957
Less: comprehensive income attributable to non-controlling interest		6	22	2
Comprehensive income (loss) attributable to DXC common stockholders		$ 152	$ (5,728)	$ 955
[1]	Tax benefit related to foreign currency translation adjustments was $27, $2, and $1 for the fiscal years ended March 31, 2021, March 31, 2020, March 31, 2019, respectively.
[2]	Tax expense (benefit) related to cash flow hedge adjustments was $6, $(5), and $(3) for the fiscal years ended March 31, 2021, March 31, 2020, March 31, 2019, respectively.
[3]	Tax benefit related to available-for-sale securities was $1, $0, and $0 for the fiscal years ended March 31, 2021, March 31, 2020, March 31, 2019, respectively.
[4]	Tax expense (benefit) related to prior service costs was $2, $0, and $(5) for the fiscal years ended March 31, 2021, March 31, 2020, March 31, 2019, respectively.
[5]	Tax benefit related to amortization of prior service costs was $4, $1, and $2 for the fiscal years ended March 31, 2021, March 31, 2020, March 31, 2019, respectively.

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Foreign currency translation adjustments, tax benefit	$ 27	$ 2	$ 1
Cash flow hedges adjustment, tax expense (benefit)	6	(5)	(3)
Available-for-sale securities, tax benefit	1	0	0
Prior service cost, tax expense (benefit)	2	0	(5)
Amortization of prior service cost, tax benefit	$ 4	$ 1	$ 2

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net (loss) income	$ (146)	$ (5,358)	$ 1,262
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	1,988	1,960	2,023
Goodwill impairment losses	0	6,794	0
Operating right-of-use expense	616	698	0
Pension & other post-employment benefits, actuarial & settlement losses (gains)	519	(244)	143
Share-based compensation	56	68	74
Deferred taxes	(403)	(56)	97
(Gain) loss on dispositions	(1,983)	1	(163)
Provision for losses on accounts receivable	53	3	(10)
Unrealized foreign currency exchange (gains) losses	(36)	24	30
Impairment losses and contract write-offs	275	30	0
Debt extinguishment costs	41	0	0
Amortization of debt issuance costs and discount (premium)	3	(4)	(10)
Cash surrender value in excess of premiums paid	(3)	(12)	(11)
Other non-cash charges, net	1	0	11
Changes in assets and liabilities, net of effects of acquisitions and dispositions:
Decrease (increase) in receivables	257	269	(947)
Increase in prepaid expenses and other current assets	(299)	(229)	(632)
Decrease in accounts payable and accruals	(527)	(565)	(52)
Increase (decrease) in income taxes payable and income tax liability	434	(197)	(107)
Decrease in operating lease liability	(616)	(698)	0
Decrease in advance contract payments and deferred revenue	(66)	(146)	(74)
Other operating activities, net	(40)	12	149
Net cash provided by operating activities	124	2,350	1,783
Cash flows from investing activities:
Purchases of property and equipment	(261)	(350)	(297)
Payments for transition and transformation contract costs	(261)	(281)	(394)
Software purchased and developed	(254)	(235)	(261)
Proceeds (payments) for acquisitions, net of cash acquired	184	(1,997)	(365)
Business dispositions	4,947	0	(65)
Cash collections related to deferred purchase price receivable	159	671	1,084
Proceeds from sale of assets	164	73	357
Short-term investing	0	(75)	0
Proceeds from short-term investing	0	38	0
Other investing activities, net	(13)	19	10
Net cash provided by (used in) investing activities	4,665	(2,137)	69
Cash flows from financing activities:
Borrowings of commercial paper	1,486	4,939	2,747
Repayments of commercial paper	(1,852)	(5,076)	(2,840)
Borrowings under lines of credit	2,500	1,500	0
Repayment of borrowings under lines of credit	(4,000)	0	0
Borrowings on long-term debt	0	2,198	1,646
Principal payments on long-term debt	(3,552)	(1,039)	(2,625)
Payments on finance leases and borrowings for asset financing	(930)	(865)	(944)
Borrowings for USPS spin transaction	0	0	1,114
Proceeds from bond issuance	993	0	753
Proceeds from stock options and other common stock transactions	1	11	47
Taxes paid related to net share settlements of share-based compensation awards	(7)	(16)	(54)
Repurchase of common stock and advance payment for accelerated share repurchase	0	(736)	(1,344)
Dividend payments	(53)	(214)	(210)
Payments for debt extinguishment costs	(41)	0	0
Other financing activities, net	(21)	(45)	47
Net cash (used in) provided by financing activities	(5,476)	657	(1,663)
Effect of exchange rate changes on cash and cash equivalents	39	(90)	(19)
Net (decrease) increase in cash and cash equivalents including cash classified within current assets held for sale	(648)	780	170
Less: cash classified within current assets held for sale	(63)	0	0
Net (decrease) increase in cash and cash equivalents	(711)	780	170
Cash and cash equivalents at beginning of year	3,679	2,899	2,729
Cash and cash equivalents at end of year	$ 2,968	$ 3,679	$ 2,899

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) shares in Thousands, $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit)	Retained Earnings (Accumulated Deficit)Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Income (Loss)	Treasury Stock		Total DXC Equity	Total DXC EquityCumulative Effect, Period of Adoption, Adjustment	Non-Controlling Interest
Beginning balance (in shares) at Mar. 31, 2018			286,393
Beginning balance at Mar. 31, 2018	$ 13,837	$ 114	$ 3	$ 12,210	$ 1,301	$ 114	$ 58	$ (85)	[1]	$ 13,487	$ 114	$ 350
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	1,262				1,257					1,257		5
Other comprehensive income (loss)	(305)						(302)			(302)		(3)
Share-based compensation expense	74			74						74
Acquisition of treasury stock	(51)							(51)	[1]	(51)
Share repurchase program (in shares)			(19,343)
Share repurchase program	(1,339)			(845)	(494)					(1,339)
Stock option exercises and other common stock transactions (in shares)			3,164
Stock option exercises and other common stock transactions	37			37						37
Dividends declared	(209)				(209)					(209)
Non-controlling interest distributions and other	(29)									0		(29)
Divestiture of USPS	(1,666)			(175)	(1,491)					(1,666)
Ending balance (in shares) at Mar. 31, 2019			270,214
Ending balance at Mar. 31, 2019	$ 11,725		$ 3	11,301	478		(244)	(136)	[1],[2]	11,402		323
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201613Member
Net (loss) income	$ (5,358)				(5,369)					(5,369)		11
Other comprehensive income (loss)	(348)						(359)			(359)		11
Share-based compensation expense	70			70						70
Acquisition of treasury stock	(16)							(16)	[2]	(16)
Share repurchase program (in shares)			(15,934)
Share repurchase program	(736)			(669)	(67)					(736)
Stock option exercises and other common stock transactions (in shares)			1,394
Stock option exercises and other common stock transactions	12			12						12
Dividends declared	(219)				(219)					(219)
Non-controlling interest distributions and other	(1)									0		(1)
Ending balance (in shares) at Mar. 31, 2020			255,674
Ending balance at Mar. 31, 2020	5,129	$ (4)	$ 3	10,714	(5,177)	$ (4)	(603)	(152)	[2],[3]	4,785	$ (4)	344
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(146)				(149)					(149)		3
Other comprehensive income (loss)	304						301			301		3
Share-based compensation expense	46			46						46
Acquisition of treasury stock	(6)							(6)	[3]	(6)
Stock option exercises and other common stock transactions (in shares)			1,379
Stock option exercises and other common stock transactions	1			1						1
Non-controlling interest distributions and other	(16)				(1)					(1)		(15)
Ending balance (in shares) at Mar. 31, 2021			257,053
Ending balance at Mar. 31, 2021	$ 5,308		$ 3	$ 10,761	$ (5,331)		$ (302)	$ (158)	[3]	$ 4,973		$ 335
[1]	1,788,658 treasury shares as of March 31, 2019
[2]	(1) 2,148,708 treasury shares as of March 31, 2020
[3]	(1) 2,458,027 treasury shares as of March 31, 2021

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2021
Statement of Stockholders' Equity [Abstract]
Dividends declared (in dollars per share)	$ 0.84	$ 0.76
Common stock in treasury, at cost (in shares)	2,148,708	1,788,658	2,458,027

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Business DXC Technology Company ("DXC" or the "Company") helps global companies run their mission critical systems and operations while modernizing IT, optimizing data architectures, and ensuring security and scalability across public, private and hybrid clouds. With decades of driving innovation, the world’s largest companies trust DXC to deploy its Enterprise Technology Stack to deliver new levels of performance, competitiveness and customer experiences. HPS Sale On April 1, 2021, DXC completed the sale of its healthcare provider software business ("HPS" or the "HPS Business") to Dedalus Holding S.p.A. ("Dedalus"). The sale was accomplished by the cash purchase of all equity interests and assets attributable to the HPS Business for €462 million (approximately $543 million), subject to certain adjustments. See Note 4 - "Assets Held for Sale" and Note 24 - "Subsequent Events" for further information. HHS Sale On October 1, 2020, DXC completed the sale of its U.S. State and Local Health and Human Services business ("HHS" or the "HHS Business") to Veritas Capital Fund Management, L.L.C. ("Veritas Capital") to form Gainwell Technologies. The sale was accomplished by the cash purchase of all equity interests and assets attributable to the HHS Business together with future services to be provided by the Company for a total enterprise value of $5.0 billion, subject to net working capital adjustments and assumed liabilities. See Note 3 - "Divestitures" for further information. Luxoft Acquisition On June 14, 2019, DXC completed its acquisition of Luxoft Holding, Inc. ("Luxoft"), a global digital strategy and software engineering firm (the "Luxoft Acquisition"). The acquisition builds on DXC’s unique value proposition as an end-to-end, mainstream IT and digital services market leader and strengthens the Company’s ability to design and deploy transformative digital solutions for customers at scale. See Note 2 - "Acquisitions" for further information. Basis of Presentation In order to make this report easier to read, DXC refers throughout to (i) the Consolidated Financial Statements as the “financial statements,” (ii) the Consolidated Statements of Operations as the “statements of operations,” (iii) the Consolidated Statement of Comprehensive Income (Loss) as the "statements of comprehensive income," (iv) the Consolidated Balance Sheets as the “balance sheets,” and (v) the Consolidated Statements of Cash Flows as the “statements of cash flows.” In addition, references throughout to numbered “Notes” refer to the numbered Notes in these Notes to Consolidated Financial Statements unless otherwise noted. The accompanying financial statements have been prepared in accordance with the rules and regulations of the U.S. Securities and Exchange Commission for annual reports and accounting principles generally accepted in the United States ("GAAP"). The financial statements include the accounts of DXC, its consolidated subsidiaries, and those business entities in which DXC maintains a controlling interest. Investments in business entities in which the Company does not have control, but has the ability to exercise significant influence over operating and financial policies, are accounted for by the equity method. Other investments are accounted for by the cost method. Non-controlling interests are presented as a separate component within equity in the balance sheets. Net earnings attributable to the non-controlling interests are presented separately in the statements of operations, and comprehensive income attributable to non-controlling interests are presented separately in the statements of comprehensive income. All intercompany transactions and balances have been eliminated. Certain amounts reported in the previous year have been reclassified to conform to the current year presentation. Use of Estimates 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 crisis, are uncertain, rapidly changing and difficult to predict. Therefore, accounting estimates and assumptions may change over time in response to the COVID-19 crisis 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. Leases Effective April 1, 2019, the Company adopted ASU 2016-02, "Leases (ASC 842)" using the modified retrospective method. Refer to Note 7 - "Leases" for required disclosures. The Company determines if an arrangement is a lease at inception by evaluating whether the arrangement conveys the right to use an identified asset and whether DXC obtains substantially all economic benefits from and has the ability to direct the use of the asset. Operating leases are included in operating right-of-use ("ROU") assets, net, current operating lease liabilities and non-current operating lease liabilities in DXC's balance sheets. Finance leases are included in property and equipment, net, short-term debt and current maturities of long-term debt and long-term debt, net of current maturities in DXC's balance sheets. ROU assets represent the Company's right to use an underlying asset for the lease term and lease liabilities represent its obligation to make lease payments arising from the lease. Operating ROU assets and operating lease liabilities are recognized at commencement based on the present value of lease payments over the lease term. As most of the Company's leases do not provide an implicit rate, DXC uses its incremental borrowing rate based on the information available at commencement to determine the present value of lease payments. The incremental borrowing rate is the rate of interest that DXC would have to pay to borrow, on a collateralized basis, an amount equal to the lease payments, in a similar economic environment and over a similar term. The rate is dependent on several factors, including the lease term, currency of the lease payments and the Company's credit ratings. Operating ROU assets also include any lease payments made and exclude lease incentives. The Company's lease terms may include options to extend or terminate the lease. Operating ROU assets and lease liabilities include these options when it is reasonably certain that they will be exercised. Lease arrangements generally do not contain any residual value guarantees or material restrictive covenants. Revenue Recognition Effective April 1, 2018, the Company adopted ASU 2014-09, “Revenue from Contracts with Customers (ASC 606),” using the modified retrospective method. Refer to Note 21 - “Revenue” for required disclosures. The Company’s accounting policy related to the new revenue standard is summarized below. The Company's primary service offerings are information technology outsourcing, other professional services, or a combination thereof. Revenues are recognized when control of the promised goods or services is transferred to DXC's customers, in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services. DXC determines revenue recognition through the five-step model as follows: • Identification of the contract, or contracts, with a customer • Identification of the performance obligations in the contract • Determination of the transaction price • Allocation of the transaction price to the performance obligations in the contract • Recognition of revenue when, or as, the Company satisfies a performance obligation DXC's IT outsourcing ("ITO") arrangements typically reflect a single performance obligation that comprises a series of distinct services which are substantially the same and provided over a period of time using the same measure of progress. Revenue derived from these arrangements is recognized over time based upon the level of services delivered in the distinct periods in which they are provided based on time increments. When other parties are involved in providing goods or services as part of our customer arrangements, DXC recognizes revenue on a gross basis as a principal when it controls goods or services before they are transferred to the customer. DXC's contracts often include upfront fees billed for activities to familiarize DXC with the customers operations, take control over their administration and operation, and adapt them to DXC's solutions. Upfront fees are generally recognized ratably over the contract period, which approximates the manner in which the services are provided. These activities typically do not qualify as performance obligations, and the related revenues are allocated to the relevant performance obligations and recognized ratably over time as the performance obligation is satisfied during the period in which DXC provides the related service, which is typically the life of the contract. Software transactions that include multiple performance obligations are described below. For contracts with multiple performance obligations, DXC allocates the contract’s transaction price to each performance obligation based on the relative standalone selling price of each distinct good or service in the contract. Other than software sales involving multiple performance obligations, the primary method used to estimate standalone selling price is the expected cost plus a margin approach, under which the Company forecasts its expected costs of satisfying a performance obligation and then adds an appropriate margin for that distinct good or service. DXC's ITO arrangements may also contain embedded leases for equipment used to fulfill services. A contract with a customer includes an embedded lease when DXC grants the customer a right to control the use of an identified asset for a period of time in exchange for consideration. Embedded leases with customers are typically recognized either as a sales type lease in which revenue and co st of sales is recognized upon lease commencement; or they may be recognized as operating leases in which revenue is recognized over the usage period. Where a contract contains an embedded lease, the contract’s transaction price is allocated to the contract performance obligations and the lease component based upon the relative standalone selling price. The transaction price of a contract is determined based on fixed and variable consideration. Variable consideration related to the Company’s ITO offerings often include volume-based pricing that are allocated to the distinct days of the services to which the variable consideration pertains. However, in certain cases, estimates of variable consideration, including penalties, contingent milestone payments and rebates are necessary. The Company only includes estimates of variable consideration in the transaction price to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur. These judgments involve consideration of historical and expected experience with the customer and other similar customers, and the facts and circumstances specific to the arrangement. The Company generally provides its services under time and materials contracts, unit price contracts, fixed-price contracts, and software contracts for which revenue is recognized in the following manner: Time and materials contracts . Revenue is recognized over time at agreed-upon billing rates when services are provided. Unit-price contracts. Revenue is recognized over time based on unit metrics multiplied by the agreed upon contract unit price or when services are delivered. Fixed-price contracts. For certain fixed-price contracts, revenue is recognized over time using a method that measures the extent of progress towards completion of a performance obligation, generally using a cost-input method (referred to as the percentage-of-completion cost-to-cost method). Under the percentage-of-completion cost-to-cost method, revenue is recognized based on the proportion of total cost incurred to estimated total costs at completion. A performance obligation's estimate at completion includes all direct costs such as materials, labor, subcontractor costs, overhead, and a ratable portion of general and administrative costs. If output or input measures are not available or cannot be reasonably estimated, revenue is deferred until progress can be measured and costs are not deferred unless they meet the criteria for capitalization. Under the percentage-of-completion cost-to-cost method, progress towards completion is measured based on either achievement of specified contract milestones, costs incurred as a proportion of estimated total costs, or other measures of progress when appropriate. Profit in a given period is reported at the estimated profit margin to be achieved on the overall contract. Software contracts. Certain of DXC's arrangements involve the sale of DXC proprietary software, post contract customer support, and other software-related services. The standalone selling price generally is determined for each performance obligation using an adjusted market assessment approach based on the price charged where each deliverable is sold separately. In certain limited cases (typically for software licenses) when the historical selling price is highly variable, the residual approach is used. This approach allocates revenue to the performance obligation equal to the difference between the total transaction price and the observable standalone selling prices for the other performance obligations. Revenue from distinct software licenses is recognized at a point in time when the customer can first use the software license. If significant customization is required, software revenue is recognized as the related software customization services are performed in accordance with the percentage-of-completion method described above. Revenue for post contract customer support and other software services is recognized over time as those services are provided . Modifications. Co ntracts with our customers may be modified over the course of the contract term and may change the scope, price or both of the existing contract. Contract modifications are reviewed to determine whether they should be accounted for as part of the original contract, the termination of an existing contract and the creation of a new contract, or as a separate contract. Contract modifications are a separate contract when the modification provides additional goods and services that are distinct and the transaction price is at the standalone selling price. If the contract modification is part of the existing contract, a cumulative adjustment to revenue is recorded. If the contract modification represents the termination of the existing contract and the creation of a new contract, the modified transaction price is allocated to the prospective performance obligations and any embedded lease components. If a contract modification modifies an embedded lease component and the modification is not accounted for as a separate contract, the classification of the lease is reassessed. Practical Expedients and Exemptions DXC does not adjust the promised amount of consideration for the effects of a significant financing component when the period between when DXC transfers a promised good or service to a customer and when the customer pays for that good or service will be one year or less. In addition, the Company reports revenue net of any revenue-based taxes assessed by a governmental authority that are imposed on and concurrent with specific revenue-producing transactions, such as sales taxes and value-added taxes. Contract Balances The timing of revenue recognition, billings and cash collections results in accounts receivable (billed receivables, unbilled receivables and contract assets) and deferred revenue and advance contract payments (contract liabilities) on the Company's balance sheets. In arrangements that contain an element of customized software solutions, amounts are generally billed as work progresses in accordance with agreed-upon contractual terms, either at periodic intervals (e.g. monthly) or upon achievement of certain contractual milestones. Generally, billing occurs subsequent to revenue recognition, sometimes resulting in contract assets if the related billing is conditional upon more than just the passage of time. However, the Company sometimes receives advances or deposits from customers, before revenue is recognized, which results in the generation of contract liabilities. Payment terms vary by type of product or service being provided as well as by customer, although the term between invoicing and when payment is due is generally an insignificant period of time. Costs to Obtain a Contract Certain sales commissions earned by the Company's sales force are considered incremental and recoverable costs of obtaining a contract with a customer. The majority of sales commissions are paid based on the achievement of quota-based targets. These costs are deferred and amortized on a straight-line basis over an average period of benefit determined to be five years. The Company determined the period of benefit considering the length of its customer contracts, its technology, and other factors. The period of benefit approximates the average stated contract terms, excluding expected future renewals because sales commissions are paid upon contract renewal in a manner commensurate with the initial commissions. Some commission payments are not capitalized because they are expensed during the fiscal year as the related revenue is recognized. Capitalized sales commissions costs are classified within other assets and amortized in selling, general and administrative expenses. Costs to Fulfill a Contract Certain contract setup costs incurred upon initiation or renewal of an outsourcing contract that generate or enhance resources to be used in satisfying future performance obligations are capitalized when they are deemed recoverable. Judgment is applied to assess whether contract setup costs are capitalizable. Costs that generate or enhance resources often pertain to activities that enhance the capabilities of the services, improve customer experience, and establish a more effective and efficient IT environment. The Company recognizes these transition and transformation contract costs as other assets, which are amortized over the respective contract life. Pension and Other Benefit Plans The Company accounts for its pension, other post-retirement benefit ("OPEB"), defined contribution and deferred compensation plans using the guidance of ASC 710 "Compensation – General" and ASC 715 "Compensation – Retirement Benefits." The Company recognizes actuarial gains and losses and changes in fair value of plan assets in earnings at the time of plan remeasurement as a component of net periodic benefit expense. Typically plan remeasurement occurs annually during the fourth quarter of each fiscal year. The remaining components of pension and OPEB expense, primarily current period service and interest costs and expected return on plan assets, are recorded on a quarterly basis. Inherent in the application of the actuarial methods are key assumptions, including, but not limited to, discount rates, expected long-term rates of return on plan assets, mortality rates, rates of compensation increases, and medical cost trend rates. Company management evaluates these assumptions annually and updates assumptions as necessary. The fair value of assets is determined based on the prevailing market prices or estimated fair value of investments when quoted prices are not available. Software Development Costs After establishing technological feasibility, and until such time as the software products are available for general release to customers, the Company capitalizes costs incurred to develop commercial software products to be sold, leased or otherwise marketed. Costs incurred to establish technological feasibility are charged to expense as incurred. Enhancements to software products are capitalized where such enhancements extend the life or significantly expand the marketability of the products. Amortization of capitalized software development costs is determined separately for each software product. Annual amortization expense is calculated based on the greater of the ratio of current gross revenues for each product to the total of current and anticipated future gross revenues for the product or the straight-line amortization method over the estimated useful life of the product. Unamortized capitalized software costs associated with commercial software products are periodically evaluated for impairment on a product-by-product basis by comparing the unamortized balance to the product’s net realizable value. The net realizable value is the estimated future gross revenues from that product reduced by the related estimated future costs. When the unamortized balance exceeds the net realizable value, the unamortized balance is written down to the net realizable value and an impairment charge is recorded. Share-Based Compensation Share-based awards are accounted for under the fair value method. The Company provides different forms of share-based compensation to its employees and non-employee directors. This includes stock options and restricted stock units ("RSUs"), including performance-based restricted stock units ("PSUs"). The fair value of the awards is determined on the grant date, based on the Company's closing stock price. For awards settled in shares, the Company recognizes compensation expense based on the grant-date fair value net of estimated forfeitures over the vesting period. For awards settled in ca sh, the Company recognizes compensation expense based on the fair value at each reporting date net of estimated forfeitures. The Company uses a Monte Carlo simulation model to compute the estimated fair value of PSUs with a market condition. This model includes assumptions regarding term, risk-free interest rates, expected volatility and dividend yields, which are evaluated each time the Company issues an award. The risk-free rate equals the yield, as of the Valuation Date on semi-annual zero-coupon U.S. Treasury rates. The dividend yield assumption is based on the respective fiscal year dividend payouts. Expected volatility is based on a historical approach, therefore the expected volatility assumption is based on the performance period of the award. The Company u ses the Black-Scholes-Merton model to compute the estimated fair value of options granted. This model includes assumptions regarding expected term, risk-free interest rates, expected volatility and dividend yields, which are periodically evaluated. The expected term is calculated based on the Company’s historical experience with respect to its stock plan activity and an estimate of when vested and unexercised option shares will be exercised. The expected term of options is based on job tier classifications, which have different historical exercise behavior. The risk-free interest rate is based on the zero-coupon interest rate of U.S. government issued treasury STRIPS with a period commensurate with the expected term of the options. Expected volatility is based on a blended approach, which uses a two-thirds weighting for historical volatility and one-third weighting for implied volatility. The Company’s historical volatility calculation is based on employee class and historical closing prices of the Company's peer group, in order to better align this factor with the expected terms of the stock options. DXC’s implied stock price volatility is derived from the price of exchange traded options on DXC’s stock with the longest remaining contractual term. Implied volatility is a prospective, forward looking measure representing market participants’ expectations of DXC's future stock price volatility. The dividend yield assumption is based on the respective fiscal year dividend payouts. Forfeitures are estimated based on historical experience. Business Combinations Companies acquired during each reporting period are reflected in the results of the Company effective from their respective dates of acquisition through the end of the reporting period. The Company allocates the fair value of purchase consideration to the assets acquired and liabilities assumed based on their fair values at the acquisition date. The excess of the fair value of purchase consideration over the fair value of the assets acquired and liabilities assumed in the acquired entity is recorded as goodwill. If the Company obtains new information about facts and circumstances that existed as of the acquisition date during the measurement period, which may be up to one year from the acquisition date, the Company may record adjustments to the assets acquired and liabilities assumed with the corresponding offset to goodwill. Upon the conclusion of the measurement period or final determination of the values of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded to the Company's statements of operations. For contingent consideration recorded as a liability, the Company initially measures the amount at fair value as of the acquisition date and adjusts the liability, if needed, to fair value each reporting period. Changes in the fair value of contingent consideration, other than measurement period adjustments, are recognized as income or expense. Acquisition-related expenses and post-acquisition integration costs are recognized separately from the business combination and are expensed as incurred. Goodwill Impairment Analysis Effective July 1, 2019, the Company adopted ASU 2017-04, "Intangibles-Goodwill and Other (Topic 350), Simplifying the Test for Goodwill Impairment" using the prospective method. Refer to Note 12 - "Goodwill" for required disclosures. The Company tests goodwill for impairment on an annual basis as of the first day of the second fiscal quarter and between annual tests if circumstances change, or if an event occurs that would more likely than not reduce the fair value of a reporting unit below its carrying amount. The Company has defined its reporting units as its reportable segments. A significant amount of judgment is involved in determining whether an event indicating impairment has occurred between annual testing dates. Such indicators include: a significant decline in the Company's stock price, a significant decline in expected future cash flows, a significant adverse change in legal factors or in the business climate, unanticipated competition, the disposal of a significant component of a reporting unit and the testing for recoverability of a significant asset group within a reporting unit. The Company initially assesses qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. This qualitative assessment considers all relevant factors specific to the reporting units, including macroeconomic conditions, industry and market considerations, overall financial performance, and relevant entity-specific events. If the Company determines that it is not more likely that the carrying amount for a reporting unit is less than its fair value, then subsequent quantitative goodwill impairment testing is not required. If the Company determines that it is more likely than not that the carrying amount for a reporting unit is greater than its fair value, then it proceeds with a subsequent quantitative goodwill impairment test. The Company has the option to bypass the initial qualitative assessment stage and proceed directly to the quantitative goodwill impairment test. The quantitative goodwill impairment test compares each reporting unit’s fair value to its carrying value. If the reporting unit’s fair value exceeds its carrying value, no further procedures are required. However, if a reporting unit’s fair value is less than its carrying value, then an impairment charge is recorded in the amount of the excess . When the Company performs the quantitative goodwill impairment test for a reporting unit, it estimates the fair value of the reporting unit using both the income approach and the market approach. The income approach uses a discounted cash flow method in which the estimated future cash flows and terminal values for each reporting unit are discounted to present value using a discount rate. Cash flow projections are based on management's estimates of economic and market conditions, which drive key assumptions of revenue growth rates, operating margins, capital expenditures and working capital requirements. The discount rate is based on the specific risk characteristics of each reporting unit, the weighted-average cost of capital and its underlying forecasts. The market approach estimates fair value by applying performance-metric multiples to the reporting unit's prior and expected operating performance. The multiples are derived from comparable publicly traded companies that have operating and investment characteristics similar to those of the reporting unit. If the fair value of the reporting unit derived using one approach is significantly different from the fair value estimate using the other approach, the Company reevaluates its assumptions used in the two models. Assumptions are modified as considered appropriate under the circumstances until the two models yield similar and reasonable results. The fair values determined by the market approach and income approach, as described above, are weighted to determine the fair value for each reporting unit. The weighting ascribed to the market approach fair value assigned to each reporting unit is influenced by two primary factors: 1) the number of comparable publicly traded companies used in the market approach, and 2) the similarity of the operating and investment characteristics of the reporting units to the comparable publicly traded companies used in the market approach. If DXC performs a quantitative goodwill impairment test for all of its reporting units in conjunction with its annual goodwill testing, it also compares the sum of all of its reporting units’ fair values to the Company's market capitalization (per-share stock price multiplied by the number of shares outstanding) and calculates an implied control premium representing the excess of the sum of the reporting units’ fair values over the market capitalization. The Company evaluates the reasonableness of the control premium by comparing it to control premiums derived from recent comparable business combinations. If the implied control premium is not supported by market data, the Company reconciles its fair value estimates of the reporting units to a market capitalization supported by relevant market data. As a result, when DXC’s stock price and thus market capitalization is low relative to the sum of the estimated fair value of its reporting units, this reconciliation can result in reductions to the estimated fair values for the reporting units. Fair Value The Company applies fair value accounting for its financial assets and liabilities and non-financial assets and liabilities that are recognized or disclosed at fair value in the financial statements on a recurring basis. The objective of a fair value measurement is to estimate the price to sell an asset or transfer a liability in an orderly transaction between market participants at the measurement date under current market conditions. Such transactions to sell an asset or transfer a liability are assumed to occur in the principal market for that asset or liability, or in the absence of the pri

Acquisitions

Acquisitions	12 Months Ended
	Mar. 31, 2021
Business Combinations [Abstract]
Acquisitions	Acquisitions Fiscal 2021 Acquisitions AXA Bank Germany Acquisition On January 1, 2021, DXC completed its acquisition of AXA Bank Germany ("AXA Bank"), a German retail bank, from AXA Group for the total consideration of $101 million. In connection with its acquisition of AXA Bank, DXC received cash of $294 million which includes customer deposit liabilities totaling $197 million. DXC recorded goodwill associated with the acquisition of AXA Bank totaling $2 million. Fiscal 2020 Acquisitions Luxoft Acquisition On June 14, 2019, DXC completed the acquisition of Luxoft, a digital service provider whose offerings encompass strategic consulting, custom software development services, and digital solution engineering for total consideration of $2.0 billion. The acquisition will combine Luxoft’s digital engineering capabilities with DXC’s expertise in IT modernization and integration. The purchase agreement (“Merger Agreement”) was entered into by DXC and Luxoft on January 6, 2019 and the transaction was closed on June 14, 2019. The transaction between DXC and Luxoft is an acquisition, with DXC as the acquirer and Luxoft as the acquiree, based on the fact that DXC acquired 100% of the equity interests and voting rights in Luxoft, and that DXC is the entity that transferred the cash consideration. The Company's allocation of the purchase price to the assets acquired and liabilities assumed as of the Luxoft acquisition date is as follows: (in millions) Fair Value Cash and cash equivalents $ 113 Accounts receivable 233 Other current assets 15 Total current assets 361 Property and equipment 31 Intangible assets 577 Other assets 99 Total assets acquired 1,068 Accounts payable, accrued payroll, accrued expenses, and other current liabilities (121) Deferred revenue (8) Long-term deferred tax liabilities and income tax payable (106) Other liabilities (72) Total liabilities assumed (307) Net identifiable assets acquired 761 Goodwill 1,262 Total consideration transferred $ 2,023 Goodwill represents the excess of the purchase price over the fair value of identifiable assets acquired and liabilities assumed at the acquisition date. The goodwill recognized with the acquisition was attributable to the synergies expected to be achieved by combining the businesses of DXC and Luxoft, expected future contracts and the acquired workforce. The cost-saving opportunities are expected to include improved operating efficiencies and asset optimization. The total goodwill arising from the acquisition was allocated to GBS and is not deductible for tax purposes. The Company valued current assets and liabilities using existing carrying values as an estimate of the approximate fair value of those items at the acquisition date except for certain contract receivables for which the Company determined fair value based on a cost plus margin approach. The Company valued acquired property and equipment using predominately the direct capitalization method of the income approach and in certain specific cases, the Company determined that the net book value represents the fair value. The Company valued customer relationships using the multi-period excess earnings method under the income approach and valued trade names and developed technology using a relief from royalty method under the income approach. The Company determined that the net book value of the purchased software represents the fair value. Below are the estimated useful lives of the acquired intangibles: Estimated Useful Lives (Years) Customer related intangibles 10 Trade names 20 Developed technology 3 Third-party purchased software 3 The Company valued deferred tax liabilities based on statutory tax rates in the jurisdictions of the legal entities where the acquired non-current assets and liabilities are taxed. Results of Operations The Company's statement of operations includes the following revenues and net income attributable to Luxoft since the acquisition date: (in millions) Twelve Months Ended March 31, 2020 (1) Revenues $ 695 Net income (loss) $ (25) (1) Results for the fiscal year ended March 31, 2020 reflect operations subsequent to the acquisition date of June 14, 2019, not the full twelve months of fiscal 2020. Fiscal 2019 Acquisitions Molina Medicaid Solutions Acquisition (1) On October 1, 2018, DXC completed its acquisition of Molina Medicaid Solutions ("MMS"), a Medicaid Management Information Systems business, from Molina Healthcare, Inc. for the total consideration of $233 million. The combination of MMS with DXC expands DXC’s ability to provide services to state agencies in the administration of Medicaid programs, including business processing, information technology development, and administrative services. The purchase price for the MMS was allocated to assets acquired and liabilities assumed based upon the current determination of fair values at the date of acquisition as follows: $87 million to current assets, $112 million to intangible assets other than goodwill, $11 million to other assets, $51 million to current liabilities, $18 million to other liabilities and $92 million to goodwill. The goodwill is associated with the Company's GBS segment and is tax deductible. The intangible assets acquired include customer relationships and developed technology which have a 13-year weighted average estimated useful life. (1) MMS was sold as part of the HHS Sale discussed in Note 3 - "Divestitures." Other Acquisitions In addition to the MMS acquisition, DXC completed seven acquisitions to complement the Company's Microsoft Dynamics and ServiceNow offerings and to provide opportunities for future growth. The acquired businesses are included in the results for the GBS segment. The purchase consideration of $228 million included cash of $187 million and contingent consideration with an estimated fair value of $41 million. The purchase price was allocated to assets acquired and liabilities assumed based upon determination of fair values at the dates of acquisition as follows: $73 million to current assets, $71 million to intangible assets other than goodwill, $10 million to other non-current assets, $63 million to current liabilities and $137 million to goodwill. The goodwill is associated with the Company's GBS segment some of which is tax deductible.

Divestitures

Divestitures	12 Months Ended
	Mar. 31, 2021
Discontinued Operations and Disposal Groups [Abstract]
Divestitures	Divestitures Fiscal 2021 Divestitures HHS Sale On October 1, 2020, DXC completed the sale of its HHS Business to Veritas Capital. The sale was accomplished by the cash purchase of all equity interests and assets attributable to the HHS Business for a total enterprise value of $5.0 billion (including $85 million related to future services to be provided by the Company). As part of the sale of the HHS business, $272 million of repurchased receivables, previously sold under the Milano Receivables Facility ("Milano Facility') (see Note 6 - "Receivables" to the financial statements), $12 million of prepaid maintenance, and $48 million of software licenses were transferred to the HHS Business. DXC made payment for these assets during the third quarter of fiscal 2021. The repurchase of receivables and payment on prepaid maintenance are reported as operating cash outflows, and the payment for software license is considered an investing cash outflow. The HHS Sale resulted in a pre-tax gain on sale of $2,014 million, net of closing costs. The sale price is subject to adjustment based on changes in actual closing net working capital. Final potential working capital adjustments are pending. Approximately $3.5 billion of the sale proceeds were used to prepay $1,250 million of Revolver Credit Facility, £600 million of GBP commercial paper (approximately $772 million), and the following term loan facilities: €350 million of Euro Term Loan due fiscal 2024 (approximately $410 million), $381 million of USD Term loan due fiscal 2025, A$500 million of AUD Term Loan due fiscal 2022 (approximately $358 million), and €250 million of Euro Term Loan due fiscal 2022 and 2023 (approximately $292 million). See Note 14 - "Debt" to the financial statements. DXC's post-divestiture relationship with the HHS Business is governed by the Purchase Agreement, which provides for the allocation of assets, employees, liabilities and obligations (including property, employee benefits, litigation, and tax-related assets and liabilities) between DXC and the HHS Business attributable to periods prior to, at and after the divestment. In addition, DXC and the HHS Business have service and commercial contracts that generally extend through fiscal 2023. The divestment of the HHS Business, reported as part of the GBS segment, did not meet the requirements for presentation as discontinued operations as it did not represent a strategic shift that would have a major effect on DXC's operations and financial results and was included in income from continuing operations prior to its divestment. The following is a summary of the assets and liabilities distributed as part of the HHS Sale on October 1, 2020: (in millions) As of October 1, 2020 Assets: Cash and cash equivalents $ 8 Accounts receivable, net 295 Prepaid expenses 39 Other current assets 2 Total current assets 344 Intangible assets, net 1,308 Operating right-of-use assets, net 74 Goodwill 1,354 Property and equipment, net 46 Other assets 54 Total non-current assets 2,836 Total assets $ 3,180 Liabilities: Accounts payable $ 79 Accrued payroll and related costs 13 Current operating lease liabilities 27 Accrued expenses and other current liabilities 36 Deferred revenue and advance contract payments 20 Total current liabilities 175 Non-current deferred revenue 32 Long-term operating lease liabilities 48 Other long term liabilities 2 Total long-term liabilities 82 Total liabilities $ 257 During fiscal 2021, the Company sold some insignificant businesses that resulted in a loss of $10 million. Fiscal 2019 Divestitures Separation of USPS During fiscal 2019, the Company completed the separation of its U.S. Public Sector business ("USPS") (the "Separation"), and combination of USPS with Vencore Holding Corp. ("Vencore") and KeyPoint Government Solutions ("Keypoint") (the "Mergers") to form Perspecta, an independent public company. Implementation of the Separation and DXC's post-Separation relationship with Perspecta is governed by several agreements, including the following: • a Separation and Distribution Agreement; • an Employee Matters Agreement; • a Tax Matters Agreement; • an Intellectual Property Matters Agreement; • a Transition Services Agreement; • a Real Estate Matters Agreement; • an IT Services Agreement and, • a Non-US Agency Agreement. These agreements provide for the allocation of assets, employees, liabilities and obligations (including property, employee benefits, litigation, and tax-related assets and liabilities) between DXC and Perspecta attributable to periods prior to, at and after the Separation. In addition, DXC and Perspecta have service and commercial contracts that generally extend through fiscal 2023. Results for the twelve months ended March 31, 2021 and March 31, 2020 include $31 million and $39 million of revenue and income from continuing operations before taxes associated with the IT services agreement. Pursuant to the Separation and Distribution Agreement, immediately prior to the Separation, Perspecta made a net cash payment of $984 million to DXC, which reflects transaction consideration of $1,050 million less $66 million in principal amount of debt that was outstanding at a subsidiary of Perspecta. Perspecta financed the payment through borrowings under a new senior secured term loan facility. The following is a summary of the assets and liabilities distributed as part of the Separation of USPS on May 31, 2018: (in millions) As of May 31, 2018 Assets: Cash and cash equivalents $ 95 Receivables, net 458 Prepaid expenses 82 Other current assets 35 Total current assets of discontinued operations 670 Intangible assets, net (1) 870 Goodwill 2,029 Property and equipment, net 294 Other assets (1) 169 Total non-current assets of discontinued operations 3,362 Total assets $ 4,032 Liabilities: Short-term debt and current maturities of long-term debt $ 161 Accounts payable 165 Accrued payroll and related costs 17 Accrued expenses and other current liabilities 358 Deferred revenue and advance contract payments 53 Income tax payable 18 Total current liabilities of discontinued operations 772 Long-term debt, net of current maturities 1,320 Non-current deferred revenue 5 Non-current income tax liabilities and deferred tax liabilities 196 Other long-term liabilities 71 Total long-term liabilities of discontinued operations 1,592 Total liabilities $ 2,364 (1) Previously reported amounts were adjusted to reflect the reclassification of transition and transformation contract costs from intangible assets to other assets to conform to the current year presentation. The following is a summary of the operating results of USPS which have been reflected within income from discontinued operations, net of tax: (in millions) Fiscal Year Ended March 31, 2019 (1) Revenue $ 431 Costs of services 311 Selling, general and administrative 50 Depreciation and amortization 33 Restructuring costs 1 Interest expense 8 Other (income) expense, net (25) Total costs and expenses 378 Total income from discontinued operations, before income taxes 53 Income tax expense 18 Total income from discontinued operations $ 35 (1) Results for the fiscal year ended March 31, 2019 reflect operations through the Separation date of May 31, 2018, not the full twelve-month period as shown for the prior period. There was no gain or loss on disposition recognized as a result of the Separation. The following selected financial information of USPS is included in the statements of cash flows: (in millions) Fiscal Year Ended March 31, 2019 (1) Depreciation $ 16 Amortization $ 17 Capital expenditures $ — Significant operating non-cash items: Gain on dispositions $ 24 (1) Results for the fiscal year ended March 31, 2019 reflect operations through the Separation date of May 31, 2018, not the full twelve-month period as shown for the prior period. On July 17, 2020, DXC entered into a purchase agreement to sell (the "HPS Sale") its healthcare software business ("HPS" or the "HPS Business") to Dedalus Holding S.p.A. ("Dedalus") for €462 million (approximately $543 million), which includes €10 million (approximately $12 million) related to future services to be provided by the Company. Final consideration for the HPS Sale is subject to certain adjustments. The transaction closed on April 1, 2021. See Note 24 - "Subsequent Events." As of March 31, 2021, the disposition of the HPS Business, reported as part of the GBS segment, met the requirements for presentation as assets held for sale under GAAP. In addition, as of March 31, 2021, the Company entered into a definitive agreements to sell insignificant businesses, which were also classified as held for sale. Assets held for sale are reported at carrying value, which is less than fair value. Assets held for sale and related liabilities as of March 31, 2021 were as follows: (in millions) HPS Business Other Total Assets: Cash and cash equivalents $ 28 $ 35 $ 63 Accounts receivable, net 64 17 81 Prepaid expenses 6 5 11 Other current assets — 5 5 Total current assets held for sale 98 62 160 Intangible assets, net 101 16 117 Operating right-of-use assets, net 5 18 23 Goodwill 80 9 89 Deferred income taxes, net 43 — 43 Property and equipment, net 4 52 56 Other assets 16 9 25 Total non-current assets held for sale 249 104 353 Total assets held for sale $ 347 $ 166 $ 513 Liabilities: Accounts payable $ 4 $ 8 $ 12 Accrued payroll and related costs 7 2 9 Current operating lease liabilities 2 17 19 Accrued expenses and other current liabilities 13 13 26 Deferred revenue and advance contract payments 46 6 52 Total current liabilities related to assets held for sale 72 46 118 Non-current deferred revenue 10 — 10 Long-term operating lease liabilities 3 1 4 Income tax liabilities and deferred tax liabilities 1 — 1 Other long term liabilities 3 2 5 Total long-term liabilities related to assets held for sale 17 3 20 Total liabilities related to assets held for sale $ 89 $ 49 $ 138

Assets Held for Sale

Assets Held for Sale	12 Months Ended
	Mar. 31, 2021
Discontinued Operations and Disposal Groups [Abstract]
Assets Held for Sale	Divestitures Fiscal 2021 Divestitures HHS Sale On October 1, 2020, DXC completed the sale of its HHS Business to Veritas Capital. The sale was accomplished by the cash purchase of all equity interests and assets attributable to the HHS Business for a total enterprise value of $5.0 billion (including $85 million related to future services to be provided by the Company). As part of the sale of the HHS business, $272 million of repurchased receivables, previously sold under the Milano Receivables Facility ("Milano Facility') (see Note 6 - "Receivables" to the financial statements), $12 million of prepaid maintenance, and $48 million of software licenses were transferred to the HHS Business. DXC made payment for these assets during the third quarter of fiscal 2021. The repurchase of receivables and payment on prepaid maintenance are reported as operating cash outflows, and the payment for software license is considered an investing cash outflow. The HHS Sale resulted in a pre-tax gain on sale of $2,014 million, net of closing costs. The sale price is subject to adjustment based on changes in actual closing net working capital. Final potential working capital adjustments are pending. Approximately $3.5 billion of the sale proceeds were used to prepay $1,250 million of Revolver Credit Facility, £600 million of GBP commercial paper (approximately $772 million), and the following term loan facilities: €350 million of Euro Term Loan due fiscal 2024 (approximately $410 million), $381 million of USD Term loan due fiscal 2025, A$500 million of AUD Term Loan due fiscal 2022 (approximately $358 million), and €250 million of Euro Term Loan due fiscal 2022 and 2023 (approximately $292 million). See Note 14 - "Debt" to the financial statements. DXC's post-divestiture relationship with the HHS Business is governed by the Purchase Agreement, which provides for the allocation of assets, employees, liabilities and obligations (including property, employee benefits, litigation, and tax-related assets and liabilities) between DXC and the HHS Business attributable to periods prior to, at and after the divestment. In addition, DXC and the HHS Business have service and commercial contracts that generally extend through fiscal 2023. The divestment of the HHS Business, reported as part of the GBS segment, did not meet the requirements for presentation as discontinued operations as it did not represent a strategic shift that would have a major effect on DXC's operations and financial results and was included in income from continuing operations prior to its divestment. The following is a summary of the assets and liabilities distributed as part of the HHS Sale on October 1, 2020: (in millions) As of October 1, 2020 Assets: Cash and cash equivalents $ 8 Accounts receivable, net 295 Prepaid expenses 39 Other current assets 2 Total current assets 344 Intangible assets, net 1,308 Operating right-of-use assets, net 74 Goodwill 1,354 Property and equipment, net 46 Other assets 54 Total non-current assets 2,836 Total assets $ 3,180 Liabilities: Accounts payable $ 79 Accrued payroll and related costs 13 Current operating lease liabilities 27 Accrued expenses and other current liabilities 36 Deferred revenue and advance contract payments 20 Total current liabilities 175 Non-current deferred revenue 32 Long-term operating lease liabilities 48 Other long term liabilities 2 Total long-term liabilities 82 Total liabilities $ 257 During fiscal 2021, the Company sold some insignificant businesses that resulted in a loss of $10 million. Fiscal 2019 Divestitures Separation of USPS During fiscal 2019, the Company completed the separation of its U.S. Public Sector business ("USPS") (the "Separation"), and combination of USPS with Vencore Holding Corp. ("Vencore") and KeyPoint Government Solutions ("Keypoint") (the "Mergers") to form Perspecta, an independent public company. Implementation of the Separation and DXC's post-Separation relationship with Perspecta is governed by several agreements, including the following: • a Separation and Distribution Agreement; • an Employee Matters Agreement; • a Tax Matters Agreement; • an Intellectual Property Matters Agreement; • a Transition Services Agreement; • a Real Estate Matters Agreement; • an IT Services Agreement and, • a Non-US Agency Agreement. These agreements provide for the allocation of assets, employees, liabilities and obligations (including property, employee benefits, litigation, and tax-related assets and liabilities) between DXC and Perspecta attributable to periods prior to, at and after the Separation. In addition, DXC and Perspecta have service and commercial contracts that generally extend through fiscal 2023. Results for the twelve months ended March 31, 2021 and March 31, 2020 include $31 million and $39 million of revenue and income from continuing operations before taxes associated with the IT services agreement. Pursuant to the Separation and Distribution Agreement, immediately prior to the Separation, Perspecta made a net cash payment of $984 million to DXC, which reflects transaction consideration of $1,050 million less $66 million in principal amount of debt that was outstanding at a subsidiary of Perspecta. Perspecta financed the payment through borrowings under a new senior secured term loan facility. The following is a summary of the assets and liabilities distributed as part of the Separation of USPS on May 31, 2018: (in millions) As of May 31, 2018 Assets: Cash and cash equivalents $ 95 Receivables, net 458 Prepaid expenses 82 Other current assets 35 Total current assets of discontinued operations 670 Intangible assets, net (1) 870 Goodwill 2,029 Property and equipment, net 294 Other assets (1) 169 Total non-current assets of discontinued operations 3,362 Total assets $ 4,032 Liabilities: Short-term debt and current maturities of long-term debt $ 161 Accounts payable 165 Accrued payroll and related costs 17 Accrued expenses and other current liabilities 358 Deferred revenue and advance contract payments 53 Income tax payable 18 Total current liabilities of discontinued operations 772 Long-term debt, net of current maturities 1,320 Non-current deferred revenue 5 Non-current income tax liabilities and deferred tax liabilities 196 Other long-term liabilities 71 Total long-term liabilities of discontinued operations 1,592 Total liabilities $ 2,364 (1) Previously reported amounts were adjusted to reflect the reclassification of transition and transformation contract costs from intangible assets to other assets to conform to the current year presentation. The following is a summary of the operating results of USPS which have been reflected within income from discontinued operations, net of tax: (in millions) Fiscal Year Ended March 31, 2019 (1) Revenue $ 431 Costs of services 311 Selling, general and administrative 50 Depreciation and amortization 33 Restructuring costs 1 Interest expense 8 Other (income) expense, net (25) Total costs and expenses 378 Total income from discontinued operations, before income taxes 53 Income tax expense 18 Total income from discontinued operations $ 35 (1) Results for the fiscal year ended March 31, 2019 reflect operations through the Separation date of May 31, 2018, not the full twelve-month period as shown for the prior period. There was no gain or loss on disposition recognized as a result of the Separation. The following selected financial information of USPS is included in the statements of cash flows: (in millions) Fiscal Year Ended March 31, 2019 (1) Depreciation $ 16 Amortization $ 17 Capital expenditures $ — Significant operating non-cash items: Gain on dispositions $ 24 (1) Results for the fiscal year ended March 31, 2019 reflect operations through the Separation date of May 31, 2018, not the full twelve-month period as shown for the prior period. On July 17, 2020, DXC entered into a purchase agreement to sell (the "HPS Sale") its healthcare software business ("HPS" or the "HPS Business") to Dedalus Holding S.p.A. ("Dedalus") for €462 million (approximately $543 million), which includes €10 million (approximately $12 million) related to future services to be provided by the Company. Final consideration for the HPS Sale is subject to certain adjustments. The transaction closed on April 1, 2021. See Note 24 - "Subsequent Events." As of March 31, 2021, the disposition of the HPS Business, reported as part of the GBS segment, met the requirements for presentation as assets held for sale under GAAP. In addition, as of March 31, 2021, the Company entered into a definitive agreements to sell insignificant businesses, which were also classified as held for sale. Assets held for sale are reported at carrying value, which is less than fair value. Assets held for sale and related liabilities as of March 31, 2021 were as follows: (in millions) HPS Business Other Total Assets: Cash and cash equivalents $ 28 $ 35 $ 63 Accounts receivable, net 64 17 81 Prepaid expenses 6 5 11 Other current assets — 5 5 Total current assets held for sale 98 62 160 Intangible assets, net 101 16 117 Operating right-of-use assets, net 5 18 23 Goodwill 80 9 89 Deferred income taxes, net 43 — 43 Property and equipment, net 4 52 56 Other assets 16 9 25 Total non-current assets held for sale 249 104 353 Total assets held for sale $ 347 $ 166 $ 513 Liabilities: Accounts payable $ 4 $ 8 $ 12 Accrued payroll and related costs 7 2 9 Current operating lease liabilities 2 17 19 Accrued expenses and other current liabilities 13 13 26 Deferred revenue and advance contract payments 46 6 52 Total current liabilities related to assets held for sale 72 46 118 Non-current deferred revenue 10 — 10 Long-term operating lease liabilities 3 1 4 Income tax liabilities and deferred tax liabilities 1 — 1 Other long term liabilities 3 2 5 Total long-term liabilities related to assets held for sale 17 3 20 Total liabilities related to assets held for sale $ 89 $ 49 $ 138

Earnings (Loss) Per Share

Earnings (Loss) Per Share	12 Months Ended
	Mar. 31, 2021
Earnings Per Share [Abstract]
Earnings (Loss) Per Share	Earnings (Loss) Per Share Basic EPS are computed using the weighted average number of common shares outstanding during the period. Diluted EPS reflect the incremental shares issuable upon the assumed exercise of stock options and equity awards. The following table reflects the calculation of basic and diluted EPS: Fiscal Years Ended (in millions, except per-share amounts) March 31, 2021 March 31, 2020 March 31, 2019 Net (loss) income attributable to DXC common shareholders: From continuing operations $ (149) $ (5,369) $ 1,222 From discontinued operations — — 35 $ (149) $ (5,369) $ 1,257 Common share information: Weighted average common shares outstanding for basic EPS 254.14 258.57 277.54 Dilutive effect of stock options and equity awards — — 3.89 Weighted average common shares outstanding for diluted EPS 254.14 258.57 281.43 EPS: Basic Continuing operations $ (0.59) $ (20.76) $ 4.40 Discontinued operations — — 0.13 Total $ (0.59) $ (20.76) $ 4.53 Diluted Continuing operations $ (0.59) $ (20.76) $ 4.35 Discontinued operations — — 0.12 Total $ (0.59) $ (20.76) $ 4.47 Certain share based equity awards were excluded from the computation of dilutive EPS because inclusion of these awards would have had an anti-dilutive effect. The following table reflects awards excluded: Fiscal Years Ended March 31, 2021 (1) March 31, 2020 (1) March 31, 2019 Stock Options 1,596,985 1,075,901 — RSUs 2,768,022 2,029,567 46,051 PSUs 1,463,872 289,972 25,086 (1) Due to the Company's net loss during fiscal 2021 and fiscal 2020, stock options, RSUs and PSUs were excluded from the computation of dilutive EPS because they would have had an anti-dilutive effect.

Receivables

Receivables	12 Months Ended
	Mar. 31, 2021
Receivables [Abstract]
Receivables	Receivables Receivables, net of allowance for doubtful accounts consist of the following: As of (in millions) March 31, 2021 March 31, 2020 Billed trade receivables $ 2,009 $ 2,094 Unbilled receivables 1,214 1,419 Other receivables 933 879 Total $ 4,156 $ 4,392 The Company calculates expected credit losses for trade accounts receivable based on historical credit loss rates for each aging category as adjusted for the current market conditions and forecasts about future economic conditions. The following table presents the activity in allowances against trade accounts receivables: As of and for Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 Beginning balance $ 74 $ 60 Impact of adoption of the Credit Loss Standard 4 — Provisions for losses on accounts receivable 53 3 Other adjustments to allowance and write-off's (40) 11 Ending balance $ 91 $ 74 Receivables Facility The Company has an accounts receivable sales facility (as amended, restated, supplemented or otherwise modified as of March 31, 2021, the "Receivables Facility") with certain unaffiliated financial institutions (the "Purchasers") for the sale of commercial accounts receivable in the United States. Under the Receivables Facility, certain of the Company subsidiaries (the "Sellers") sell accounts receivable to DXC Receivables LLC ("Receivables SPV"), a wholly owned bankruptcy-remote entity, in a true sale. Receivables SPV subsequently sells certain of the receivables in their entirety to the Purchasers pursuant to a receivables purchase agreement. The financial obligations of Receivables SPV to the Purchasers under the Receivables Facility are limited to the assets it owns and non-recourse to the Company. Sales of receivables by Receivables SPV occur continuously and are settled on a monthly basis. During the second quarter of fiscal 2021, Receivables SPV amended the Receivables Facility (the "Amendment") to decrease the investment limit from $600 million to $500 million and extend the termination date to August 5, 2021. For the fiscal year ended March 31, 2021, there is no deferred purchase price ("DPP") for receivables as the entire purchase price is paid in cash when the receivables are sold to the Purchasers. DPPs were previously realized by Receivables SPV upon the ultimate collection of the underlying receivables sold to the Purchasers. Cash receipts on the DPP were classified as cash flows from investing activities. The amount available under the Receivables Facility fluctuates over time based on the total amount of eligible receivables generated during the normal course of business after deducting excess concentrations. As of March 31, 2021, the total availability under the Receivables Facility was $350 million and the amount sold to the Purchasers was $390 million, which was derecognized from the Company's balance sheet. As of March 31, 2021, the Company recorded a $40 million liability within accounts payable because the amount of cash proceeds received by the Company under the Receivables Facility was more than the total availability. The Receivables Facility is scheduled to terminate on August 5, 2021, but provides for one or more optional one-year extensions, if agreed to by the Purchasers. The Company uses the proceeds from Receivables SPV's sale of receivables under the Receivables Facility for general corporate purposes. The fair value of the sold receivables approximated book value due to the short-term nature, and as a result, no gain or loss on sale of receivables was recorded. While the Company guarantees certain non-financial performance obligations of the Sellers, the Purchasers bear customer credit risk associated with the receivables sold under the Receivables Facility and have recourse in the event of credit-related customer non-payment solely to the assets of the Receivables SPV. The following table is a reconciliation of the beginning and ending balances of the DPP: As of and for the Fiscal Year Ended (in millions) March 31, 2020 Beginning balance $ 574 Transfers of receivables 1,214 Collections (1,265) Change in funding availability 2 Facility amendments (525) Ending balance $ — Milano Receivables Facility On October 1, 2020, and in connection with the consummation of the sale of the HHS Business, and at the direction of the purchaser of the HHS Business, the Milano Facility was terminated. For more information, refer to Note 3 - "Divestitures." German Receivables Facility On October 1, 2019, DXC executed an accounts receivable securitization facility (as amended, restated, supplemented or otherwise modified as of March 31, 2021, the "DE Receivables Facility") with certain unaffiliated financial institutions (the "DE Purchasers") for the sale of commercial accounts receivable in Germany. The DE Receivables Facility has an investment limit of €150 million (approximately $175 million as of March 31, 2021). Under the DE Receivables Facility, certain of the Company's subsidiaries organized in Germany (the "DE Sellers") sell accounts receivable to DXC ARFacility Designated Activity Company ("DE Receivables SPV"), a trust owned bankruptcy-remote entity, in a true sale. DE Receivables SPV subsequently sells certain of the receivables in their entirety to the DE Purchasers pursuant to a receivables purchase agreement. Sales of receivables by DE Receivables SPV occur continuously and are settled on a monthly basis. During the first quarter of fiscal 2021, DE Receivables SPV amended the DE Receivables Facility ("DE Amendment"). Under the terms of the amended DE Receivables Facility, there is no longer any DPP for receivables as the entire purchase price is paid in cash when the receivables are sold to the DE Purchasers. Prior to the DE Amendment, DPPs were realized by DE Receivables SPV upon the ultimate collection of the underlying receivables sold to the DE Purchasers. Cash receipts on the DPPs were classified as cash flows from investing activities. The DPP balance was $102 million before the DE Amendment was executed. Upon execution of the DE Amendment, the DE Purchasers extinguished the DPP balance and returned title to the applicable underlying receivables to DE Receivables SPV. The DPP extinguishment was classified as a non-cash investing activity, please refer to Note 18 - "Cash Flows." The amount available under the DE Receivables Facility fluctuates over time based on the total amount of eligible receivables generated during the normal course of business after deducting excess concentrations. As of March 31, 2021, the total availability under the DE Receivables Facility was approximately $117 million, and the amount sold to DE Purchasers was $114 million, which was derecognized from the Company's balance sheet. As of March 31, 2021, the Company recorded a $3 million receivable within accounts receivable because the amount of cash proceeds received by the Company under the DE Receivables Facility was less than the total availability. The DE Receivables Facility is scheduled to terminate on September 30, 2021, but provides for one or more optional one-year extensions, if agreed to by the DE Purchasers. The Company uses the proceeds from DE Receivables SPV's sale of receivables under the DE Receivables Facility for general corporate purposes. The fair value of the sold receivables approximated book value due to the short-term nature, and as a result, no gain or loss on sale of receivables was recorded. Certain obligations of DE Sellers under the DE Receivables Facility and certain DXC subsidiaries located in Germany, as initial servicers, are guaranteed by the Company under a performance guaranty, made in favor of an administrative agent on behalf of the DE Purchasers. However, the performance guaranty does not cover DE Receivables SPV’s obligations to pay yield, fees or invested amounts to the administrative agent or any of the DE Purchasers. The following table is a reconciliation of the beginning and ending balances of the DPP: (in millions) As of March 31, 2021 As of March 31, 2020 Beginning balance $ 103 $ — Transfers of receivables 417 996 Collections (420) (879) Change in funding availability 2 (14) Facility amendments (102) — Ending balance $ — $ 103

Leases

Leases	12 Months Ended
	Mar. 31, 2021
Leases [Abstract]
Leases	Leases The Company has operating and finance leases for data centers, corporate offices and certain equipment. Our leases have remaining lease terms of one one The components of lease expense were as follows: For the Fiscal Year Ended (in millions) March 31, 2021 March 31, 2020 Operating lease cost $ 616 $ 698 Short-term lease cost 53 49 Variable lease cost 56 46 Sublease income (40) (45) Total operating costs $ 685 $ 748 Finance lease cost: Amortization of right-of-use assets $ 433 $ 405 Interest on lease liabilities 45 65 Total finance lease cost $ 478 $ 470 Cash payments made from variable lease costs and short-term leases are not included in the measurement of operating and finance lease liabilities, and as such, are excluded from the supplemental cash flow information stated below. In addition, for the supplemental non-cash information on operating and finance leases, please refer to Note 18 - "Cash Flows." For the Fiscal Year Ended (in millions) March 31, 2021 March 31, 2020 Cash paid for amounts included in the measurement of: Operating cash flows from operating leases $ 616 $ 698 Operating cash flows from finance leases $ 45 $ 65 Financing cash flows from finance leases $ 584 $ 576 Supplemental Balance Sheet information related to leases was as follows: As of (in millions) Balance Sheet Line Item March 31, 2021 March 31, 2020 Assets: ROU operating lease assets Operating right-of-use assets, net $ 1,366 $ 1,428 ROU finance lease assets Property and Equipment, net 834 $ 1,220 Total $ 2,200 $ 2,648 Liabilities: Current Operating lease Current operating lease liabilities $ 418 $ 482 Finance lease Short-term debt and current maturities of long-term debt 398 444 Total $ 816 $ 926 Non-current Operating lease Non-current operating lease liabilities $ 1,038 $ 1,063 Finance lease Long-term debt, net of current maturities 496 602 Total $ 1,534 $ 1,665 The following table provides information on the weighted average remaining lease term and weighted average discount rate for operating and finance leases: As of March 31, 2021 March 31, 2020 Weighted average remaining lease term: Years Operating leases 4.9 4.8 Finance leases 2.6 2.7 Weighted average remaining discount rate: Rate Operating leases 3.8 % 4.0 % Finance leases 3.6 % 6.4 % The following maturity analysis presents expected undiscounted cash payments for operating and finance leases on an annual basis as of March 31, 2021: Fiscal year Operating Leases (in millions) Real Estate Equipment Finance Leases 2022 $ 411 $ 41 $ 418 2023 335 23 290 2024 260 11 152 2025 190 5 59 2026 108 2 14 Thereafter 207 1 — Total lease payments 1,511 83 933 Less: imputed interest 135 3 39 Total payments $ 1,376 $ 80 $ 894
Leases	Leases The Company has operating and finance leases for data centers, corporate offices and certain equipment. Our leases have remaining lease terms of one one The components of lease expense were as follows: For the Fiscal Year Ended (in millions) March 31, 2021 March 31, 2020 Operating lease cost $ 616 $ 698 Short-term lease cost 53 49 Variable lease cost 56 46 Sublease income (40) (45) Total operating costs $ 685 $ 748 Finance lease cost: Amortization of right-of-use assets $ 433 $ 405 Interest on lease liabilities 45 65 Total finance lease cost $ 478 $ 470 Cash payments made from variable lease costs and short-term leases are not included in the measurement of operating and finance lease liabilities, and as such, are excluded from the supplemental cash flow information stated below. In addition, for the supplemental non-cash information on operating and finance leases, please refer to Note 18 - "Cash Flows." For the Fiscal Year Ended (in millions) March 31, 2021 March 31, 2020 Cash paid for amounts included in the measurement of: Operating cash flows from operating leases $ 616 $ 698 Operating cash flows from finance leases $ 45 $ 65 Financing cash flows from finance leases $ 584 $ 576 Supplemental Balance Sheet information related to leases was as follows: As of (in millions) Balance Sheet Line Item March 31, 2021 March 31, 2020 Assets: ROU operating lease assets Operating right-of-use assets, net $ 1,366 $ 1,428 ROU finance lease assets Property and Equipment, net 834 $ 1,220 Total $ 2,200 $ 2,648 Liabilities: Current Operating lease Current operating lease liabilities $ 418 $ 482 Finance lease Short-term debt and current maturities of long-term debt 398 444 Total $ 816 $ 926 Non-current Operating lease Non-current operating lease liabilities $ 1,038 $ 1,063 Finance lease Long-term debt, net of current maturities 496 602 Total $ 1,534 $ 1,665 The following table provides information on the weighted average remaining lease term and weighted average discount rate for operating and finance leases: As of March 31, 2021 March 31, 2020 Weighted average remaining lease term: Years Operating leases 4.9 4.8 Finance leases 2.6 2.7 Weighted average remaining discount rate: Rate Operating leases 3.8 % 4.0 % Finance leases 3.6 % 6.4 % The following maturity analysis presents expected undiscounted cash payments for operating and finance leases on an annual basis as of March 31, 2021: Fiscal year Operating Leases (in millions) Real Estate Equipment Finance Leases 2022 $ 411 $ 41 $ 418 2023 335 23 290 2024 260 11 152 2025 190 5 59 2026 108 2 14 Thereafter 207 1 — Total lease payments 1,511 83 933 Less: imputed interest 135 3 39 Total payments $ 1,376 $ 80 $ 894

Fair Value

Fair Value	12 Months Ended
	Mar. 31, 2021
Fair Value Disclosures [Abstract]
Fair Value	Fair Value Fair Value Measurements on a Recurring Basis The following table presents the Company’s assets and liabilities that are measured at fair value on a recurring basis excluding pension assets and derivative assets and liabilities. See Note 15 - "Pension and Other Benefit Plans" and Note 9 - "Derivative Instruments" for information about these excluded assets and liabilities. There were no transfers between any of the levels during the periods presented. Fair Value Hierarchy (in millions) As of March 31, 2021 Assets: Fair Value Level 1 Level 2 Level 3 Money market funds and money market deposit accounts $ 12 $ 12 $ — $ — Time deposits (1) 78 78 — — Other securities (2) 57 — 55 2 Total assets $ 147 $ 90 $ 55 $ 2 Liabilities: Contingent consideration $ 27 $ — $ — $ 27 Total liabilities $ 27 $ — $ — $ 27 (in millions) As of March 31, 2020 Assets: Fair Value Level 1 Level 2 Level 3 Money market funds and money market deposit accounts $ 156 $ 156 $ — $ — Time deposits (1) 595 595 — — Other debt securities (2) 51 — 48 3 Deferred purchase price receivable 103 — — 103 Total assets $ 905 $ 751 $ 48 $ 106 Liabilities: Contingent consideration $ 46 $ — $ — $ 46 Total Liabilities $ 46 $ — $ — $ 46 (1) Cost basis approximated fair value due to the short period of time to maturity. (2) Other securities include available-for-sale equity security investments with Level 2 inputs that have a cost basis of $57 million and $37 million, and (losses)/gains of $(2) million and $11 million, as of March 31, 2021 and March 31, 2020, respectively, included in other expense (income), net in the Company’s statements of operations. During the third quarter of fiscal 2021, previously held investments were sold and the proceeds were used to purchase new investments. The gain of $17 million from the sale was included in other expense (income), net. The fair value of money market funds, money market deposit accounts with less than three months maturity, and time deposits included in cash and cash equivalents are based on quoted market prices. The fair value of other securities included in other long-term assets is based on actual market prices. The fair value of the DPPs included in receivables, net is determined by calculating the expected amount of cash to be received and is principally based on unobservable inputs consisting primarily of the face amount of the receivables adjusted for anticipated credit losses. The fair value of contingent consideration included in other liabilities is based on contractually defined targets of financial performance in connection with earn-outs and other considerations. Other Fair Value Disclosures The carrying amounts of the Company’s financial instruments with short-term maturities, primarily accounts receivable, accounts payable, short-term debt, and financial liabilities included in other accrued liabilities approximate their market values due to their short-term nature. If measured at fair value, these financial instruments would be classified as Level 2 or Level 3 within the fair value hierarchy. The Company estimates the fair value of its long-term debt primarily by using quoted prices obtained from third-party providers such as Bloomberg and by using an expected present value technique based on observable market inputs for instruments with similar terms currently available to the Company. The estimated fair value of the Company's long-term debt excluding finance lease liabilities was $4.7 billion and $8.2 billion as of March 31, 2021 and March 31, 2020, respectively as compared with the carrying value of $4.4 billion and $8.4 billion as of March 31, 2021 and March 31, 2020, respectively. If measured at fair value, long-term debt excluding finance lease liabilities would be classified as Level 1 or Level 2 within the fair value hierarchy. Non-financial assets such as goodwill, tangible assets, intangible assets, and other contract related long-lived assets are recorded at fair value in the period they are initially recognized; and such fair value may be adjusted in subsequent periods if an event occurs or circumstances change that indicate that the asset may be impaired. The fair value measurements in such instances would be classified as Level 3 within the fair value hierarchy. Other than the goodwill impairment losses discussed in Note 12 - "Goodwill," there were no significant impairments recorded during the fiscal periods covered by this report.

Derivative Instruments

Derivative Instruments	12 Months Ended
	Mar. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	Derivative Instruments In the normal course of business, the Company is exposed to interest rate and foreign exchange rate fluctuations. As part of its risk management strategy, the Company uses derivative instruments, primarily foreign currency forward contracts and interest rate swaps, to hedge certain foreign currency and interest rate exposures. The Company’s objective is to reduce earnings volatility by offsetting gains and losses resulting from these exposures with losses and gains on the derivative contracts used to hedge them. The Company does not use derivative instruments for trading or any speculative purpose. Derivatives Designated for Hedge Accounting Cash flow hedges The Company has designated certain foreign currency forward contracts as cash flow hedges to reduce foreign currency risk related to certain Indian Rupee, Euro and British Pound-denominated intercompany obligations and forecasted transactions. The notional amounts of foreign currency forward contracts designated as cash flow hedges as of March 31, 2021 and March 31, 2020 was $546 million and $455 million, respectively. As of March 31, 2021, the related forecasted transactions extend through March 2023. For the fiscal years ended March 31, 2021 and March 31, 2020, the Company performed an assessment at the inception of the cash flow hedge transactions and determined all critical terms of the hedging instruments and hedged items matched. The Company performs an assessment of critical terms on an on-going basis throughout the hedging period. During the fiscal years ended March 31, 2021 and March 31, 2020, the Company had no cash flow hedges for which it was probable that the hedged transaction would not occur. As of March 31, 2021, $3 million of the existing amount of gain related to the cash flow hedge reported in AOCI is expected to be reclassified into earnings within the next 12 months. Amounts recognized in other comprehensive income (loss) and income (loss) from continuing operations The pre-tax gain (loss) on derivatives designated for hedge accounting recognized in other comprehensive income (loss) was $19 million and in income (loss) from continuing operations was $(5) million during the fiscal year ended March 31, 2021. Derivatives Not Designated For Hedge Accounting The derivative instruments not designated as hedges for purposes of hedge accounting include certain short-term foreign currency forward contracts. Derivatives that are not designated as hedging instruments are adjusted to fair value through earnings in the financial statement line item to which the derivative relates. Foreign currency forward contracts The Company manages the exposure to fluctuations in foreign currencies by using foreign currency forward contracts to hedge certain foreign currency denominated assets and liabilities, including intercompany accounts and forecasted transactions. The notional amount of the foreign currency forward contracts outstanding as of March 31, 2021 and March 31, 2020 was $2.1 billion and $2.2 billion, respectively. The following table presents the pretax amounts impacting income related to designated and non-designated foreign currency forward contracts: Fiscal Years Ended (in millions) Statement of Operations Line Item March 31, 2021 March 31, 2020 March 31, 2019 Foreign currency forward contracts Other expense (income), net $ 51 $ (37) $ 16 Fair Value of Derivative Instruments All derivative instruments are recorded at fair value. The Company’s accounting treatment for these derivative instruments is based on its hedge designation. The following tables present the fair values of derivative instruments included in the balance sheets: Derivative Assets As of (in millions) Balance Sheet Line Item March 31, 2021 March 31, 2020 Derivatives designated for hedge accounting: Foreign currency forward contracts Other current assets 9 — Total fair value of derivatives designated for hedge accounting $ 9 $ — Derivatives not designated for hedge accounting: Foreign currency forward contracts Other current assets $ 3 $ 16 Total fair value of derivatives not designated for hedge accounting $ 3 $ 16 Derivative Liabilities As of (in millions) Balance Sheet Line Item March 31, 2021 March 31, 2020 Derivatives designated for hedge accounting: Foreign currency forward contracts Accrued expenses and other current liabilities $ 5 $ 20 Total fair value of derivatives designated for hedge accounting: $ 5 $ 20 Derivatives not designated for hedge accounting: Foreign currency forward contracts Accrued expenses and other current liabilities $ 3 $ 12 Total fair value of derivatives not designated for hedge accounting $ 3 $ 12 The fair value of foreign currency forward contracts represents the estimated amount required to settle the contracts using current market exchange rates and is based on the period-end foreign currency exchange rates and forward points which are classified as Level 2 inputs. Other Risks for Derivative Instruments The Company is exposed to the risk of losses in the event of non-performance by the counterparties to its derivative contracts. The amount subject to credit risk related to derivative instruments is generally limited to the amount, if any, by which a counterparty's obligations exceed the obligations of the Company with that counterparty. To mitigate counterparty credit risk, the Company regularly reviews its credit exposure and the creditworthiness of the counterparties. With respect to its foreign currency derivatives, as of March 31, 2021, there were five counterparties with concentration of credit risk, and based on gross fair value, the maximum amount of loss that the Company could incur is not material. The Company also enters into enforceable master netting arrangements with some of its counterparties. However, for financial reporting purposes, it is the Company's policy not to offset derivative assets and liabilities despite the existence of enforceable master netting arrangements. The potential effect of such netting arrangements on the Company's balance sheets is not material for the periods presented. Non-Derivative Financial Instruments Designated for Hedge Accounting The Company applies hedge accounting for foreign currency-denominated debt used to manage foreign currency exposures on its net investments in certain non-U.S. operations. To qualify for hedge accounting, the hedging instrument must be highly effective at reducing the risk from the exposure being hedged. Net Investment Hedges DXC seeks to reduce the impact of fluctuations in foreign exchange rates on its net investments in certain non-U.S. operations with foreign currency-denominated debt. For foreign currency denominated debt designated as a hedge, the effectiveness of the hedge is assessed based on changes in spot rates. For qualifying net investment hedges, all gains or losses on the hedging instruments are included in currency translation. Gains or losses on individual net investments in non-U.S. operations are reclassified to earnings from accumulated other comprehensive income (loss) when such net investments are sold or substantially liquidated. As of March 31, 2021, DXC had $0.8 billion of foreign currency-denominated debt designated as hedges of net investments in non-U.S. subsidiaries. For the fiscal year ended March 31, 2021, the pre-tax impact of gain (loss) on foreign currency-denominated debt designated for hedge accounting recognized in other comprehensive income (loss) was $(93) million. As of March 31, 2020, DXC had $1.9 billion of foreign currency-denominated debt designated as hedges of net investments in non-U.S. subsidiaries.

Property and Equipment

Property and Equipment	12 Months Ended
	Mar. 31, 2021
Property, Plant and Equipment [Abstract]
Property and Equipment	Property and Equipment Property and equipment consisted of the following: As of (in millions) March 31, 2021 March 31, 2020 Property and equipment — gross: Land, buildings and leasehold improvements $ 2,228 $ 2,233 Computers and related equipment 4,596 4,876 Furniture and other equipment 227 226 Construction in progress 16 30 7,067 7,365 Less: accumulated depreciation 4,121 3,818 Property and equipment, net $ 2,946 $ 3,547 Depreciation expense for fiscal 2021, 2020 and 2019 was $754 million, $643 million and $820 million, respectively.

Intangible Assets

Intangible Assets	12 Months Ended
	Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	Intangible Assets Intangible assets consisted of the following: As of March 31, 2021 (in millions) Gross Carrying Value Accumulated Amortization Net Carrying Value Software $ 4,014 $ 2,733 $ 1,281 Customer related intangible assets 4,212 1,641 2,571 Other intangible assets 239 48 191 Total intangible assets $ 8,465 $ 4,422 $ 4,043 As of March 31, 2020 (in millions) Gross Carrying Value Accumulated Amortization Net Carrying Value Software $ 4,048 $ 2,614 $ 1,434 Customer related intangible assets 5,795 1,697 4,098 Other intangible assets 235 36 199 Total intangible assets $ 10,078 $ 4,347 $ 5,731 The components of amortization expense were as follows: Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 March 31, 2019 Intangible asset amortization $ 952 $ 1,019 $ 890 Transition and transformation contract cost amortization (1) 264 280 258 Total amortization expense $ 1,216 $ 1,299 $ 1,148 (1) Transition and transformation contract costs are included within other assets on the balance sheet. Estimated future amortization as of March 31, 2021 is as follows: Fiscal Year (in millions) 2022 $ 837 2023 $ 755 2024 $ 669 2025 $ 554 2026 $ 505

Goodwill

Goodwill	12 Months Ended
	Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	Goodwill The following tables summarize the changes in the carrying amounts of goodwill, by segment, for the fiscal years ended March 31, 2021 and March 31, 2020, respectively: (in millions) GBS GIS Total Balance as of March 31, 2020, net $ 2,017 $ — $ 2,017 Acquisition related adjustments 15 — 15 Divestitures (1,355) — (1,355) Assets held for sale (90) — (90) Foreign currency translation 54 — 54 Goodwill, gross 5,131 5,066 10,197 Accumulated impairment losses (4,490) (5,066) (9,556) Balance as of March 31, 2021, net $ 641 $ — $ 641 (in millions) GBS GIS Total Balance as of March 31, 2019, net 4,599 3,007 7,606 Acquisitions 1,288 70 1,358 Impairment Losses (3,789) (3,005) (6,794) Foreign currency translation (81) (72) (153) Goodwill, gross 6,507 5,066 11,573 Accumulated impairment losses (4,490) (5,066) (9,556) Balance as of March 31, 2020, net $ 2,017 $ — $ 2,017 The fiscal 2021 and 2020 additions to goodwill were due to the acquisitions described in Note 2 - "Acquisitions," including goodwill of some insignificant acquisitions. The foreign currency translation amount reflects the impact of currency movements on non-U.S. dollar-denominated goodwill balances. Goodwill Impairment Analyses Fiscal 2021 The Company’s annual goodwill impairment analysis, which was performed qualitatively as of July 1, 2020, did not result in an impairment charge. At the end of the fiscal 2021, the Company assessed whether there were events or changes in circumstances that would more likely than not reduce the fair value of any of its reporting units below its carrying amount and require goodwill to be tested for impairment. The Company determined that there have been no such indicators, and, therefore, it was unnecessary to perform an interim goodwill impairment test as of March 31, 2021. Fiscal 2020 The Company performed its annual goodwill impairment assessment as of July 1, 2019. Subsequent to the measurement date, the Company experienced a decline in its stock price and market capitalization that represented an indicator of impairment as the observed declines were substantial and sustained. As a result, the Company performed quantitative goodwill impairment tests during the second and fourth quarters of fiscal 2020. Both quantitative goodwill impairment tests were performed for all of DXC's reporting units, consistent with its policy described in Note 1 - "Summary of Significant Accounting Policies.” As part of the reconciliation to the Company’s market capitalization, the Company concluded on both instances that the carrying values of its reporting units exceeded their estimated fair values and recognized total non-cash impairment charges of $6,794 million, consisting of $3,789 million and $3,005 million in its GBS and GIS segments, respectively. The goodwill impairment charges do not have an impact on the calculation of the Company's financial covenants under the Company's debt arrangements. Fiscal 2019 The Company’s annual goodwill impairment analysis, which was performed as of July 1, 2018, did not result in an impairment charge. At the end of fiscal 2019, the Company assessed whether there were events or changes in circumstances that would more likely than not reduce the fair value of any of its reporting units below its carrying amount and require goodwill to be tested for impairment. The Company determined that there have been no such indicators and therefore, it was unnecessary to perform an interim goodwill impairment test as of March 31, 2019.

Income Taxes

Income Taxes	12 Months Ended
	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The sources of income (loss) from continuing operations, before income taxes, classified between domestic entities and those entities domiciled outside of the United States, are as follows: Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 March 31, 2019 Domestic entities $ 975 $ (2,928) $ 511 Entities outside the United States (321) (2,300) 1,004 Total $ 654 $ (5,228) $ 1,515 The income tax expense (benefit) on income (loss) from continuing operations is comprised of: Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 March 31, 2019 Current: Federal $ 730 $ 3 $ (50) State 257 16 42 Foreign 216 167 218 1,203 186 210 Deferred: Federal (221) (125) 95 State (51) 17 23 Foreign (131) 52 (40) (403) (56) 78 Total income tax expense $ 800 $ 130 $ 288 The current federal (benefit) and tax expense for fiscal years 2021, 2020, and 2019 includes a $(4) million transition tax benefit, $(31) million transition tax benefit and $(44) million transition tax benefit, respectively. The current expense for fiscal years 2021, 2020 and 2019, includes interest and penalties of $2 million, $2 million and $1 million, respectively, for uncertain tax positions. In connection with the HPES Merger, the Company entered into a tax matters agreement with HPE. HPE generally will be responsible for pre-HPES Merger tax liabilities including adjustments made by tax authorities to HPES U.S. and non-U.S. income tax returns. Likewise, DXC is liable to HPE for income tax receivables and refunds which it receives related to pre-HPES Merger periods. Pursuant to the tax matters agreement, the Company recorded a $34 million tax indemnification receivable related to uncertain tax positions, $70 million of tax indemnification receivable related to other tax payables and $118 million of tax indemnification payable related to other tax receivables. In connection with the USPS Separation, the Company entered into a tax matters agreement with Perspecta. Pursuant to the tax matters agreement, the Company generally will be responsible for tax liabilities arising prior to the USPS Separation. Income tax liabilities transferred to Perspecta primarily relate to pre-HPES Merger periods, for which the Company is indemnified by HPE pursuant to the tax matters agreement between the Company and HPE. The Company remains liable to HPE for tax receivables and refunds which it receives from Perspecta related to pre-HPES Merger periods that were transferred to Perspecta. Pursuant to the tax matters agreement, the Company has recorded a tax indemnification receivable from Perspecta of $72 million and a tax indemnification payable to Perspecta of $33 million related to income tax and other tax liabilities. The major elements contributing to the difference between the U.S. federal statutory tax rate and the effective tax rate ("ETR") for continuing operations is below. Fiscal Years Ended March 31, 2021 March 31, 2020 March 31, 2019 Statutory rate 21.0 % (21.0) % 21.0 % State income tax, net of federal tax 10.8 (1.4) 3.2 Foreign tax rate differential (198.4) (11.9) (18.4) Goodwill impairment — 28.3 — Change in valuation allowances 239.3 12.1 16.9 Income Tax and Foreign Tax Credits (48.7) (2.6) (0.6) Arbitration Award — (3.6) — Change in uncertain tax positions 17.2 1.1 (1.5) Withholding Taxes 10.3 0.9 3.5 U.S. Tax on Foreign Income 17.6 0.4 2.4 Excess tax benefits or expense for stock compensation 2.2 0.1 (1.1) Capitalized transaction costs 0.5 0.1 0.1 United States Tax Reform (0.7) (0.7) (3.4) Change in Indefinite Reinvestment Assertion — — (3.1) Impact of Business Divestitures 52.6 — — Granite Trust Capital Loss (5.7) — — Other items, net 4.3 0.7 — Effective tax rate 122.3 % 2.5 % 19.0 % In fiscal 2021, the ETR was primarily impacted by: • Impact of the HHS and other business divestitures, which increased tax expense and increased the ETR $344 million and 52.6%, respectively. The HHS tax gain increased tax expense and the ETR as the tax basis of assets sold, primarily goodwill, was lower than the book basis. • Continued losses in countries where we are recording a valuation allowance on certain deferred tax assets, primarily in Belgium, Denmark, Italy, France, Luxembourg, and U.S., and an impairment of the full German deferred tax asset, which increased income tax expense and increased the ETR by $1,565 million and 239.3%, respectively. • An increase in Income Tax and Foreign Tax Credits, which decreased income tax expense and decreased the ETR by $319 million and 48.7%, respectively. • Local losses on investments in Luxembourg that increased the foreign rate differential and decreased the ETR by $1,226 million and 187.5%, respectively, with an offsetting increase in the ETR due to an increase in the valuation allowance of the same amount. • The Company recognized adjustments to uncertain tax positions that increased the overall income tax expense and the ETR by $112 million and 17.2% respectively. In fiscal 2020, the ETR was primarily impacted by: • Non-deductible goodwill impairment charge, which increased tax expense and increased the ETR by $1,482 million and 28.3%, respectively. • Non-taxable gain on the arbitration award, which decreased income tax expense and decreased the ETR by $186 million and 3.6%, respectively. • A change in the net valuation allowance on certain deferred tax assets, primarily in Australia, Brazil, China, Luxembourg, and Singapore, which increased income tax expense and increased the ETR by $631 million and 12.1%, respectively. • An increase in Income Tax and Foreign Tax Credits, primarily relating to research and development credits recognized for prior years, which decreased income tax expense and decreased the ETR by $135 million and 2.6%, respectively. • Local losses on investments in Luxembourg that increased the foreign rate differential and decreased the ETR by $637 million and 12.2%, respectively, with an offsetting increase in the ETR due to an increase in the valuation allowance of the same amount. In fiscal 2019, the ETR was primarily impacted by: • Local tax losses on investments in Luxembourg that decreased the foreign tax rate differential and decreased the ETR by $360 million and 23.7%, respectively, with an offsetting increase in the ETR due to an increase in the valuation allowance of the same amount. • A change in the net valuation allowance on certain deferred tax assets, primarily in Luxembourg, Germany, Spain, U.K., and Switzerland, which increased income tax expense and increased the ETR by $256 million and 16.9%, respectively. • A decrease in the transition tax liability and a change in tax accounting method for deferred revenue, which decreased income tax expense and decreased the ETR by $66 million and 4.3%, respectively. The deferred tax assets (liabilities) were as follows: As of (in millions) March 31, 2021 March 31, 2020 Deferred tax assets Investment basis differences $ 32 $ — Tax loss/credit carryforwards 4,039 2,516 Accrued interest 20 12 Operating lease liabilities 359 370 Contract accounting 92 126 Other assets 351 144 Total deferred tax assets 4,893 3,168 Valuation allowance (3,860) (2,162) Net deferred tax assets 1,033 1,006 Deferred tax liabilities Depreciation and amortization (513) (850) Operating right-of-use asset (339) (343) Investment basis differences — (68) Employee benefits (6) (48) Other liabilities (246) (150) Total deferred tax liabilities (1,104) (1,459) Total net deferred tax assets (liabilities) $ (71) $ (453) Income tax related assets are included in the accompanying balance sheets as follows: As of (in millions) March 31, 2021 March 31, 2020 Current: Income tax receivables and prepaid taxes $ 67 $ 58 $ 67 $ 58 Non-current: Income taxes receivable and prepaid taxes $ 136 $ 180 Deferred tax assets 289 265 $ 425 $ 445 Total $ 492 $ 503 Income tax related liabilities are included in the accompanying balance sheet as follows: As of (in millions) March 31, 2021 March 31, 2020 Current: Liability for uncertain tax positions $ (30) $ (12) Income taxes payable (368) (75) $ (398) $ (87) Non-current: Deferred taxes (360) (718) Income taxes payable (130) (168) Liability for uncertain tax positions (364) (271) $ (854) $ (1,157) Total $ (1,252) $ (1,244) Significant management judgment is required in determining the Company's provision for income taxes, deferred tax assets and liabilities and any valuation allowance recorded against deferred tax assets. As of each reporting date, management weighs new evidence, both positive and negative, that could affect its view of the future realization of its net deferred tax assets. Objective verifiable evidence, which is historical in nature, carries more weight than subjective evidence, which is forward looking in nature. A valuation allowance has been recorded against deferred tax assets of approximately $3.9 billion as of March 31, 2021 due to uncertainties related to the ability to utilize these assets. In assessing whether its deferred tax assets are realizable, the Company considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized and adjusts the valuation allowance accordingly. The Company considers all available positive and negative evidence including future reversals of existing taxable temporary differences, taxable income in prior carryback years, projected future taxable income, tax planning strategies and recent financial operations. As of March 31, 2021, our net deferred tax assets in certain German entities were primarily the result of net operating loss carryforwards, pension deductions, assumed debt obligations and other miscellaneous accruals. In the current reporting period, the Company has determined that the negative evidence, including an unadjusted cumulative loss, on-going employee restructuring expenses for termination benefits and projected FY22 losses outweighed the positive evidence of potential steady state profitability when removing one-time non-recurring charges. Therefore, the Company has had a change in judgement and concluded that the deferred tax assets in certain DXC German entities are no longer realizable and has recorded a valuation allowance of $175 million. The net increase in the valuation allowance of $1,698 million in fiscal 2021, is primarily due to the local losses in Luxembourg, Belgium, Denmark, Italy, France, Germany and U.S. of $1,565 million, balance sheet movement of $4 million, and an adjustment for currency translation of $129 million. The following table provides information on the Company's various tax carryforwards: As of March 31, 2021 As of March 31, 2020 (in millions) Total With No Expiration With Expiration Expiration Dates Through Total With No Expiration With Expiration Expiration Dates Through Net operating loss carryforwards Federal $ 132 $ 128 $ 4 2033 $ 15 $ 3 $ 12 2033 State $ 369 $ 6 $ 363 2041 $ 673 $ 6 $ 667 2040 Foreign $ 16,700 $ 6,191 $ 10,509 2041 $ 10,512 $ 6,471 $ 4,041 2040 Tax credit carryforwards Federal $ 5 $ — $ 5 2040 $ 9 $ — $ 9 2040 State $ — $ — $ — N/A $ 16 $ 7 $ 9 2039 Foreign $ — $ — $ — N/A $ 16 $ — $ 16 2020 Capital loss carryforwards Federal $ — $ — $ — N/A $ — $ — $ — N/A State $ — $ — $ — N/A $ — $ — $ — N/A Foreign $ 45 $ 45 $ — N/A $ 59 $ 40 $ 19 2023 With the following exceptions, the majority of our global unremitted foreign earnings have been taxed or would be exempt from tax upon repatriation, except for the following earnings which are considered indefinitely reinvested: approximately $522 million that could be taxable when repatriated to the U.S. under section 1.245A-5(b) of the final Treasury regulations issued during fiscal 2021; and our accumulated earnings in India. A portion of these indefinitely reinvested earnings may be subject to foreign and U.S. state tax consequences when remitted. The Company will continue to evaluate its position in the future based on its future strategy and cash needs. As a result of the confluence of multiple events occurring during fiscal 2021, including but not limited to a corporate initiative to paydown debt and a recent change in India tax laws governing distributions, the Company distributed approximately $550 million from its accumulated earnings in India. Although the distribution was subject to India withholding taxes under the new India tax rules, the withholding taxes are creditable against U.S. federal income tax, resulting in minimal to no net income tax impact. The distribution was not 100% of the cumulative earnings of its Indian subsidiaries, and the Company considers the undistributed accumulated earnings in India indefinitely reinvested. The Company accounts for income tax uncertainties in accordance with ASC 740 Income Taxes, which prescribes a recognition threshold and measurement criteria for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. Benefits from tax positions should be recognized in the financial statements only when it is more likely than not that the tax position will be sustained upon examination by the appropriate taxing authority that would have full knowledge of all relevant information. A tax position that meets the more likely than not recognition threshold is measured at the largest amount of benefit that is greater than fifty percent likely of being realized upon ultimate settlement. Tax positions that previously failed to meet the more likely than not recognition threshold should be recognized in the first subsequent financial reporting period in which that threshold is met. Previously recognized tax positions that no longer meet the more likely than not recognition threshold should be derecognized in the first subsequent financial reporting period in which that threshold is no longer met. ASC 740 also provides guidance on the accounting for and disclosure of liabilities for uncertain tax positions, interest and penalties. In accordance with ASC 740, the Company’s liability for uncertain tax positions was as follows: Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 Tax $ 354 $ 253 Interest 46 45 Penalties 22 21 Offset to receivable (18) (24) Net of tax attributes (10) (12) Total $ 394 $ 283 The following table summarizes the activity related to the Company’s uncertain tax positions (excluding interest and penalties and related tax attributes): Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 March 31, 2019 Balance at beginning of fiscal year $ 253 $ 165 $ 219 Gross increases related to prior year tax positions 60 74 4 Gross decreases related to prior year tax positions (30) (9) (27) Gross increases related to current year tax positions 102 15 — Settlements and statute of limitation expirations (36) (7) (23) Acquisitions 6 18 — Foreign exchange and others (1) (3) (8) Balance at end of fiscal year $ 354 $ 253 $ 165 The Company’s liability for uncertain tax positions at March 31, 2021, March 31, 2020 and March 31, 2019, includes $316 million, $210 million and $138 million, respectively, related to amounts that, if recognized, would affect the effective tax rate (excluding related interest and penalties). The increase relating to the tax positions primarily relate to the Company's increase in foreign tax credits and transfer pricing. The Company recognizes interest accrued related to uncertain tax positions and penalties as a component of income tax expense. During the year ended March 31, 2021, the Company had a net increase in interest of $1 million ($(1) million net of tax) and a net increase in accrued expense for penalties of $1 million and as of March 31, 2021, recognized a liability for interest of $46 million ($39 million net of tax) and penalties of $22 million. During the year ended March 31, 2020, the Company had a net increase in interest expense of $5 million ($3 million net of tax) and a net decrease in accrued expense for penalties of $3 million and, as of March 31, 2020, recognized a liability for interest of $45 million ($40 million net of tax) and penalties of $21 million. During the year ended March 31, 2019, the Company had a net increase in interest expense of $2 million ($1 million net of tax) and a net decrease in accrued expense for penalties of $1 million and, as of March 31, 2019, recognized a liability for interest of $41 million ($36 million net of tax) and penalties of $25 million. The Company is currently under examination in several tax jurisdictions. A summary of the tax years that remain subject to examination in certain of the Company’s major tax jurisdictions are: Jurisdiction: Tax Years that Remain Subject to Examination (Fiscal Year Ending): United States – Federal 2008 and forward United States – Various States 2008 and forward Australia 2012 and forward Canada 2006 and forward France 2016 and forward Germany 2010 and forward India 2001 and forward U. K. 2018 and forward Tax Examinations The IRS is examining the Company's federal income tax returns for fiscal 2008 through the tax year ended October 31, 2018. With respect to CSC's fiscal 2008 through 2017 federal tax returns, the Company has entered into negotiations for a resolution through settlement with the IRS Office of Appeals. The IRS examined several issues for this audit that resulted in various audit adjustments. The Company and the IRS Office of Appeals have an agreement in principle as to some of these adjustments and we disagree with the IRS' disallowance of certain losses and deductions resulting from restructuring costs and tax planning strategies in previous years. As we believe we will ultimately prevail on the technical merits of the disagreed items and intend to challenge them in the IRS Office of Appeals or Tax Court, these matters are not fully reserved and would result in a federal and state tax expense of $405 million (including estimated interest and penalties) and related cash cost for the unreserved portion of the these items if we do not prevail in Tax Court. We do not expect these matters that proceed to tax court to be resolved in the next 12 months. We have received a notice of deficiency with respect to fiscal 2011 and 2013, and have filed a petition in Tax Court with respect to fiscal 2013 and expect to file in Tax Court with respect to fiscal 2011 in the first quarter of fiscal 2022. We also expect fiscal 2010 to proceed to Tax Court. The Company has agreed to extend the statute of limitations for fiscal years 2008 through 2012 through August 31, 2021 to provide for IRS completion of their review. The Company has agreed to extend the statute of limitations for fiscal years 2014 through fiscal 2017 through October 31,2021 to provide for IRS completion of their review. The Company expects to reach a resolution for all years no earlier than the first quarter of fiscal 2023 except for agreed issues related to fiscal 2008 through 2010 and fiscal 2011 through 2017 federal tax returns, which are expected to be resolved within twelve months.

Debt

Debt	12 Months Ended
	Mar. 31, 2021
Debt Disclosure [Abstract]
Debt	Debt The following is a summary of the Company's debt: As of (in millions) Interest Rates Fiscal Year Maturities March 31, 2021 March 31, 2020 Short-term debt and current maturities of long-term debt Commercial paper (1) (0.39)% - 0.44% 2022 $ 213 $ 542 Current maturities of long-term debt Various 2022 556 290 Current maturities of finance lease liabilities 0.59% - 19.79% 2022 398 444 Short-term debt and current maturities of long-term debt $ 1,167 $ 1,276 Long-term debt, net of current maturities AUD term loan 0.94% - 0.96% 2022 — 489 GBP term loan 0.88% - 1.46% 2022 — 556 EUR term loan 0.65% 2022 - 2023 — 822 EUR term loan 0.80% (2) 2023 - 2024 469 821 USD term loan 1.40% - 2.24% 2025 — 480 $274 million Senior notes 4.45% 2023 154 276 $171 million Senior notes 4.45% 2023 165 172 $500 million Senior notes 4.25% 2025 504 505 $500 million Senior notes 4.13% 2026 496 — £250 million Senior notes 2.75% 2025 343 307 €650 million Senior notes 1.75% 2026 760 709 $500 million Senior notes 4.75% 2028 506 507 $234 million Senior notes 7.45% 2030 268 271 Revolving credit facility 1.26% - 2.08% 2024 - 2025 — 1,500 Lease credit facility 1.15% - 1.99% 2022 - 2023 — 11 Finance lease liabilities 0.59% - 19.79% 2022 - 2027 894 1,046 Borrowings for assets acquired under long-term financing 0.00% - 6.39% 2022 - 2027 672 802 Mandatorily redeemable preferred stock outstanding 6.00% 2023 63 62 Other borrowings Various 2022 - 2023 5 70 Long-term debt 5,299 9,406 Less: current maturities 954 734 Long-term debt, net of current maturities $ 4,345 $ 8,672 . (1) At DXC's option, DXC can borrow up to a maximum of €1 billion or its equivalent in €, £, and $. (2) At DXC’s option, the EUR term loan bears interest at the Eurocurrency Rate for a one-, two-, three-, or six-month interest period, plus a margin between 0.55% and 1.05%, based on published credit ratings of DXC. Senior Notes and Term Loans During the first quarter of fiscal 2021, the Company issued two senior notes with an aggregate principal of $1.0 billion consisting of (i) $500 million of 4.00% Senior Notes due fiscal 2024 and (ii) $500 million of 4.13% Senior Notes due fiscal 2026. The proceeds from these notes were applied towards the early prepayment of DXC's term loan facilities including prepayment of €500 million of Euro Term Loan due fiscal 2023, £150 million of GBP Term Loan due fiscal 2022, A$300 million of AUD Term Loan due fiscal 2022, and $100 million of USD Term Loan due fiscal 2025. During the second quarter of fiscal 2021, the Company repaid the remaining £300 million GBP Term Loan due fiscal 2022. During the third quarter of fiscal 2021, the Company used the proceeds from the sale of HHS Business to prepay approximately $1,441 million of term loan facilities detailed below under the heading "HHS Sale Use of Proceeds." Interest on the Company's remaining term loan is payable monthly at DXC's election. The Company fully and unconditionally guarantees term loans issued by its 100% owned subsidiaries. The interest on the Company's senior notes is payable semi-annually in arrears except for interest on the £250 million Senior Notes due fiscal 2025 and the €650 million Senior Notes due fiscal 2026, which are payable annually in arrears. Generally, the Company's notes are redeemable at the Company's discretion at the then-applicable redemption premium plus accrued and unpaid interest. During the fourth quarter of fiscal 2021, the Company repaid the $500 million of 4.00% Senior Notes due fiscal 2024 that was issued during the first quarter of fiscal 2021. Tender Offers On March 16, 2021, the Company announced the commencement of an offer (the "tender offers") to purchase for cash any and all of the Company's outstanding 4.45% Senior Notes due fiscal 2023 (the "DXC Notes") and any and all of the outstanding 4.45% Senior Notes due fiscal 2023 (the "CSC Notes) issued by its wholly owned subsidiary, Computer Sciences Corporation ("CSC"). On March 25, 2021, the Company settled the principal amount tendered of $121 million of the DXC Notes and $6 million of the CSC Notes. Refer to Form 8-K dated March 16, 2021 and March 23, 2021 for more information. Revolving Credit Facility During the first quarter of fiscal 2021, the Company borrowed the remaining $2.5 billion under the $4.0 billion credit facility agreement ("Credit Agreement") as a precautionary measure to increase its cash position and increase financial flexibility in light of continuing uncertainty in the global economy and financial capital markets resulting from COVID-19. The Company repaid the full $4.0 billion during the first nine months of fiscal 2021, which became available under the revolving credit facility for redraw at the request of the Company. HHS Sale Use of Proceeds In October 2020, DXC sold the HHS business and used approximately $3.5 billion of the proceeds to prepay $1,250 million of Revolver Credit Facility, £600 million of GBP commercial paper (approximately $772 million), and the following term loan facilities: €350 million of Euro Term Loan due fiscal 2024 (approximately $410 million), $381 million of USD Term loan due fiscal 2025, A$500 million of AUD Term Loan due fiscal 2022 (approximately $358 million), and €250 million of Euro Term Loan due fiscal 2022 and 2023 (approximately $292 million). Future Maturities of Long-term Debt Expected maturities of long-term debt, including borrowings for asset financing but excluding minimum capital lease payments, for fiscal years subsequent to March 31, 2021, are as follows: Fiscal Year (in millions) 2022 $ 555 2023 304 2024 615 2025 898 2026 1,278 Thereafter 756 Total $ 4,406

Pension and Other Benefit Plans

Pension and Other Benefit Plans	12 Months Ended
	Mar. 31, 2021
Retirement Benefits [Abstract]
Pension and Other Benefit Plans	Pension and Other Benefit Plans The Company offers a number of pension and OPEB plans, life insurance benefits, deferred compensation and defined contribution plans. Most of the Company's pension plans are not admitting new participants; therefore, changes to pension liabilities are primarily due to market fluctuations of investments for existing participants and changes in interest rates. Defined Benefit Plans The Company sponsors a number of defined benefit and post-retirement medical benefit plans for the benefit of eligible employees. The benefit obligations of the Company's U.S. pension, U.S. OPEB, and non-U.S. OPEB plans represent an insignificant portion of the Company's pension and other post-retirement benefit plans. As a result, the disclosures below include the Company's U.S. and non-U.S. pension plans on a global consolidated basis. Eligible employees are enrolled in defined benefit pension plans in their country of domicile. The Contributory defined benefit pension plan in the U.K. represents the largest plan. In addition, healthcare, dental and life insurance benefits are also provided to certain non-U.S. employees. A significant number of employees outside the United States are covered by government sponsored programs at no direct cost to the Company other than related payroll taxes. The Company accrued $13 million, $10 million and $3 million, for fiscal 2021, 2020 and 2019, respectively, as additional contractual termination benefits for certain employees are part of the Company's restructuring plans. These amounts are reflected in the projected benefit obligation and in the net periodic pension cost. The change in projected benefit obligation for fiscal year 2021 is primarily related to actuarial losses and foreign currency exchange rate changes. Actuarial losses were primarily due to a decrease in discount rates and an increase in inflation rates across most plans, with partially offsetting impact of actuarial gains from a mortality update and lower than expected benefit indexation in the United Kingdom. Projected Benefit Obligations As of (in millions) March 31, 2021 March 31, 2020 Projected benefit obligation at beginning of year $ 10,150 $ 11,016 Service cost 91 92 Interest cost 245 237 Plan participants’ contributions 31 30 Amendments (9) — Business/contract acquisitions/divestitures 11 12 Contractual termination benefits 13 10 Settlement/curtailment (37) (60) Actuarial loss (gain) 1,262 (362) Benefits paid (393) (359) Foreign currency exchange rate changes 1,084 (457) Other (12) (9) Projected benefit obligation at end of year $ 12,436 $ 10,150 The following table summarizes the weighted average rates used in the determination of the Company’s benefit obligations: Fiscal Years Ended March 31, 2021 March 31, 2020 Discount rate 2.0 % 2.4 % Rates of increase in compensation levels 2.5 % 1.6 % Interest Crediting Rate 4.0 % N/A Fair Value of Plan Assets and Funded Status As of (in millions) March 31, 2021 March 31, 2020 Fair value of plan assets at beginning of year $ 11,090 $ 11,343 Actual return on plan assets 1,401 526 Employer contribution 117 108 Plan participants’ contributions 31 30 Benefits paid (393) (359) Business/contract acquisitions/divestitures — 7 Contractual termination benefits 7 15 Plan settlement (31) (63) Foreign currency exchange rate changes 1,224 (507) Other (21) (10) Fair value of plan assets at end of year $ 13,425 $ 11,090 Funded status at end of year $ 989 $ 940 Selected Information As of (in millions) March 31, 2021 March 31, 2020 Other assets $ 1,884 $ 1,735 Accrued expenses and other current liabilities (81) (16) Non-current pension obligations (796) (761) Other long-term liabilities - OPEB (18) (18) Net amount recorded $ 989 $ 940 Accumulated benefit obligation $ 12,346 $ 10,072 Benefit Plans with Projected Benefit Obligation in Excess of Plan Assets Benefit Plans with Accumulated Benefit Obligation in Excess of Plan Assets (in millions) March 31, 2021 March 31, 2020 March 31, 2021 March 31, 2020 Projected benefit obligation $ 2,490 $ 2,191 $ 2,453 $ 2,159 Accumulated benefit obligation $ 2,431 $ 2,131 $ 2,402 $ 2,108 Fair value of plan assets $ 1,596 $ 1,397 $ 1,562 $ 1,369 Net Periodic Pension Cost Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 March 31, 2019 Service cost $ 91 $ 92 $ 88 Interest cost 245 237 253 Expected return on assets (659) (651) (570) Amortization of transition obligation — — — Amortization of prior service costs (8) (9) (15) Contractual termination benefit 13 10 3 Settlement/curtailment (gain) loss (18) 7 (10) Recognition of actuarial loss (gain) 537 (252) 153 Net periodic pension expense (income) $ 201 $ (566) $ (98) The service cost component of net periodic pension (income) expense is presented in cost of services and selling, general and administrative and the other components of net periodic pension income are presented in other income, net in the Company’s statements of operations. Estimated prior service credit of $9 million will be amortized from AOCI into net periodic pension cost over the next fiscal year. The weighted-average rates used to determine net periodic pension cost were: Fiscal Years Ended March 31, 2021 March 31, 2020 March 31, 2019 Discount or settlement rates 2.4 % 2.4 % 2.5 % Expected long-term rates of return on assets 5.6 % 5.8 % 5.3 % Rates of increase in compensation levels 1.7 % 2.0 % 2.1 % The following is a summary of amounts in AOCI, before tax effects: Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 Prior service cost $ (239) $ (247) Estimated Future Contributions and Benefits Payments (in millions) Employer contributions: 2022 $ 155 Benefit Payments: 2022 $ 506 2023 443 2024 444 2025 452 2026 462 2026 and thereafter 2,454 Total $ 4,761 Fair Value of Plan Assets The tables below set forth the fair value of plan assets by asset category within the fair value hierarchy: As of March 31, 2021 (in millions) Level 1 Level 2 Level 3 Total Equity: US Domestic Stocks $ — $ — $ — $ — Global Stocks — — — — Global/International Equity commingled funds 246 2,260 — 2,506 Global equity mutual funds — — — — U.S./North American Equity commingled funds — 6 — 6 Fixed Income: Non-U.S. Government funds — — — — Fixed income commingled funds 1 42 15 58 Fixed income mutual funds — 4 — 4 Corporate bonds — 5,500 — 5,500 Alternatives: Other Alternatives (1) 1 2,706 1,930 4,637 Hedge Funds (2) — 10 1 11 Other Assets 70 65 85 220 Insurance contracts 4 380 — 384 Cash and cash equivalents 97 2 — 99 Totals $ 419 $ 10,975 $ 2,031 $ 13,425 As of March 31, 2020 (in millions) Level 1 Level 2 Level 3 Total Equity: US Domestic Stocks $ — $ 3 $ — $ 3 Global Stocks — 3 — 3 Global/International Equity commingled funds 315 1,763 — 2,078 Global equity mutual funds 8 — — 8 U.S./North American Equity commingled funds 1 4 — 5 Fixed Income: Non-U.S. Government funds 136 — — 136 Fixed income commingled funds 55 71 — 126 Fixed income mutual funds 3 — — 3 Corporate bonds 1 4,807 — 4,808 Alternatives: Other Alternatives (1) — 2,038 1,297 3,335 Hedge Funds (2) 2 7 2 11 Other Assets 87 229 59 375 Insurance contracts — 136 — 136 Cash and cash equivalents 61 2 — 63 Totals $ 669 $ 9,063 $ 1,358 $ 11,090 (1) Represents real estate and other commingled funds consisting mainly of equities, bonds, or commodities. (2) Represents investments in diversified fund of hedge funds. Changes in fair value measurements of level 3 investments for the defined benefit plans were as follows: (in millions) Balance as of March 31, 2019 $ 1,032 Actual return on plan assets held at the reporting date 83 Purchases, sales and settlements 282 Transfers in and / or out of Level 3 8 Changes due to exchange rates (47) Balance as of March 31, 2020 1,358 Actual return on plan assets held at the reporting date 233 Purchases, sales and settlements 279 Transfers in and / or out of Level 3 — Changes due to exchange rates 161 Balance as of March 31, 2021 $ 2,031 Domestic and global equity accounts are categorized as Level 1 if the securities trade on national or international exchanges and are valued at their last reported closing price. Equity assets in commingled funds reporting a net asset value are categorized as Level 2 and valued using broker dealer bids or quotes of securities with similar characteristics. Fixed income accounts are categorized as Level 1 if traded on a publicly quoted exchange or as level 2 if investments in corporate bonds are primarily investment grade bonds, generally priced using model-based pricing methods that use observable market data as inputs. Broker dealer bids or quotes of securities with similar characteristics may also be used. Alternative investment fund securities are categorized as Level 1 if held in a mutual fund or in a separate account structure and actively traded through a recognized exchange, or as Level 2 if they are held in commingled or collective account structures and are actively traded. Alternative investment fund securities are classified as Level 3 if they are held in Limited Company or Limited Partnership structures or cannot otherwise be classified as Level 1 or Level 2. Other assets represent property holdings by certain pension plans. As above, the property holdings represent a master lease arrangement entered into by DXC in the U.K. and certain U.K. pension plans as a financing transaction. Insurance contracts purchased to cover benefits payable to retirees are valued using the assumptions used to value the projected benefit obligation. Cash equivalents that have quoted prices in active markets are classified as Level 1. Short-term money market commingled funds are categorized as Level 2 and valued at cost plus accrued interest which approximates fair value. Plan Asset Allocations As of Asset Category March 31, 2021 March 31, 2020 Equity securities 19 % 19 % Debt securities 42 % 46 % Alternatives 37 % 31 % Cash and other 2 % 4 % Total 100 % 100 % Plan assets are held in a trust that includes commingled funds subject to country specific regulations and invested primarily in commingled funds. For the U.K. pension plans, the Company's largest pension plans by assets and projected liabilities, a target allocation by asset class was developed to achieve their long-term objectives. Asset allocations are monitored closely and investment reviews regarding asset strategy are conducted regularly with internal and external advisors. The Company’s investment goals and risk management strategy for plan assets evaluates a number of factors, including the time horizon of the plans’ obligations. Plan assets are invested in various asset classes that are expected to produce a sufficient level of diversification in order to reduce risk, yet produces a reasonable amount of return on investment over the long term. Sufficient liquidity is maintained to meet benefit obligations as they become due. Third party investment managers are employed to invest assets in both passively-indexed and actively-managed strategies. Equities are primarily invested broadly in domestic and foreign companies across market capitalizations and industries. Fixed income securities are invested broadly, primarily in government treasury, corporate credit, mortgage backed and asset backed investments. Alternative investment allocations are included in selected plans to achieve greater portfolio diversity intended to reduce the overall volatility risk of the plans. Plan asset risks include longevity, inflation, and other changes in market conditions that could reduce the value of plan assets. Also, a decline in the yield of high quality corporate bonds may adversely affect discount rates resulting in an increase in DXC's pension and other post-retirement obligations. These risks, among others, could cause the plans’ funded status to deteriorate, resulting in an increased reliance on Company contributions. Derivatives are permitted although their current use is limited within traditional funds and broadly allowed within alternative funds. Derivatives are used for inflation risk management and within the liability driven investing strategy. The Company also has investments in insurance contracts to pay plan benefits in certain countries. Return on Assets The Company consults with internal and external advisors regarding the expected long-term rate of return on assets. The Company uses various sources in its approach to compute the expected long-term rate of return of the major asset classes expected in each of the plans. DXC utilizes long-term, asset class return assumptions of typically 30 years, which are provided by external advisors. Consideration is also given to the extent active management is employed in each asset class and also to management expenses. A single expected long-term rate of return is calculated for each plan by assessing the plan's expected asset allocation strategy, the benefits of diversification therefrom, historical excess returns from actively managed traditional investments, expected long-term returns for alternative investments and expected investment expenses. The resulting composite rate of return is reviewed by internal and external parties for reasonableness. Retirement Plan Discount Rate The U.K. discount rate is based on the yield curve approach using the U.K. Aon Hewitt GBP Single Agency AA Corporates-Only Curve. U.K. Pension Equalization Ruling On October 26, 2018 the High Court of Justice in the U.K. (the "High Court") issued a ruling related to the equalization of benefits payable to men and women for the effect of guaranteed minimum pensions under U.K. defined benefit pension plans. As a result of this ruling, the Company estimated the impact of retroactively increasing benefits in its U.K. plans in accordance with the High Court ruling. The Company treated the additional benefits as a prior service cost which resulted in an increase to its projected benefit obligation and accumulated other comprehensive loss of $28 million. The Company will amortize this cost over the average remaining life expectancy of the U.K. participants. Given the immaterial effect on the U.K. plan's projected benefit, an interim remeasurement was not performed. Defined Contribution Plans The Company sponsors defined contribution plans for substantially all U.S. employees and certain foreign employees. The plans allow employees to contribute a portion of their earnings in accordance with specified guidelines. Matching contributions are made annually in January to participants employed on December 31 of the prior year and vest in one year. However, if a participant retires from the Company or dies prior to December 31, the participant will be eligible to receive matching contributions approximately 30 days following separation from service. During fiscal 2021, 2020 and 2019, the Company contributed $221 million, $192 million and $219 million, respectively, to its defined contribution plans. As of March 31, 2021, plan assets included 3,046,140 shares of the Company’s common stock. Deferred Compensation Plans Effective as of the HPES Merger, DXC assumed sponsorship of the Computer Sciences Corporation Deferred Compensation Plan, which was renamed the “DXC Technology Company Deferred Compensation Plan” (the “DXC DCP”), and adopted the Enterprise Services Executive Deferred Compensation Plan (the “ES DCP”). Both plans are non-qualified deferred compensation plans maintained for a select group of management, highly compensated employees and non-employee directors. The DXC DCP covers eligible employees who participated in CSC’s Deferred Compensation Plan prior to the HPES Merger. The ES DCP covers eligible employees who participated in the HPE Executive Deferred Compensation Plan prior to the HPES Merger. Both plans allow participating employees to defer the receipt of current compensation to a future distribution date or event above the amounts that may be deferred under DXC’s tax-qualified 401(k) plan, the DXC Technology Matched Asset Plan. Neither plan provides for employer contributions. As of April 3, 2017, the ES DCP does not admit new participants.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Mar. 31, 2021
Equity [Abstract]
Stockholders' Equity	Stockholders' Equity Description of Capital Stock The Company has authorized share capital consisting of 750,000,000 shares of common stock, par value $0.01 per share, and 1,000,000 shares of preferred stock, par value $0.01 per share. Each share of common stock is equal in all respects to every other share of common stock of the Company. Each share of common stock is entitled to one vote per share at each annual or special meeting of stockholders for the election of directors and upon any other matter coming before such meeting. Subject to all the rights of the preferred stock, dividends may be paid to holders of common stock as and when declared by the Board of Directors (the "Board"). The Company's charter requires that preferred stock must be all of one class but may be issued from time to time in one or more series, each of such series to have such full or limited voting powers, if any, and such designations, preferences and relative, participating, optional or other special rights or qualifications, limitations or restrictions as provided in a resolution adopted by the Board of Directors. Each share of preferred stock will rank on a parity with each other share of preferred stock, regardless of series, with respect to the payment of dividends at the respectively designated rates and with respect to the distribution of capital assets according to the amounts to which the shares of the respective series are entitled. Share Repurchase Program On April 3, 2017, DXC announced the establishment of a share repurchase program approved by the Board of Directors with an initial authorization of up to $2.0 billion for future repurchases of outstanding shares of DXC common stock. On November 8, 2018, DXC announced that its board of directors approved an incremental $2.0 billion share repurchase authorization. An expiration date has not been established for this repurchase plan. Share repurchases may be made from time to time through various means, including in open market purchases, 10b5-1 plans, privately-negotiated transactions, accelerated stock repurchases, block trades and other transactions, in compliance with Rule 10b-18 under the Exchange Act as well as, to the extent applicable, other federal and state securities laws and other legal requirements. The timing, volume, and nature of share repurchases pursuant to the share repurchase plan are at the discretion of management and may be suspended or discontinued at any time. The shares repurchased are retired immediately and included in the category of authorized but unissued shares. The excess of purchase price over par value of the common shares is allocated between additional paid-in capital and retained earnings. There was no share repurchase activity during fiscal 2021. The details of shares repurchased during fiscal 2020 and 2019 are shown below: Fiscal Year Number of shares repurchased Average Price Per Share Amount 2020 Open market purchases 12,279,107 $43.67 $ 536 ASR 3,654,544 $54.73 $ 200 2020 Total 15,933,651 $46.21 $ 736 2019 Open market purchases 19,342,586 $69.20 $ 1,339 2019 Total 19,342,586 $69.20 $ 1,339 Treasury Stock Transactions In fiscal 2021, 2020 and 2019 the Company accepted 4,050, 38,902 and 42,008 shares of its common stock, respectively, in lieu of cash in connection with the exercise of stock options. In fiscal 2021, 2020 and 2019, the Company accepted 305,269, 321,148 and 729,703 shares of its common stock, respectively, in lieu of cash in connection with the tax withholdings associated with the release of common stock upon vesting of restricted stock and RSUs. As a result, the Company holds 2,458,027 treasury shares as of March 31, 2021. Dividends The Board of Directors (the “Board”) has suspended the Company’s cash dividend payment beginning in the first quarter of fiscal 2021 to preserve cash and enhance financial flexibility in the current environment. We intend to continue to suspend quarterly cash dividends for fiscal 2022. The dividends declared during fiscal 2020 and 2019 are shown in the table below: Dividends Declared (in millions, except per share amounts) Per Common Share Total Unpaid at Fiscal Year End Fiscal 2020 $ 0.84 $ 219 $ 55 Fiscal 2019 $ 0.76 $ 209 $ 53 Accumulated Other Comprehensive Income (Loss) The following table shows the changes in accumulated other comprehensive income (loss), net of taxes: (in millions) Foreign Currency Translation Adjustments Cash Flow Hedges Available-for-sale Securities Pension and Other Post-retirement Benefit Plans Accumulated Other Comprehensive Income (Loss) Balance at March 31, 2018 $ (261) $ 9 $ 9 $ 301 $ 58 Current-period other comprehensive loss (256) (22) — (21) (299) Amounts reclassified from accumulated other comprehensive income (loss), net of taxes — 10 — (13) (3) Balance at March 31, 2019 $ (517) $ (3) $ 9 $ 267 $ (244) Current-period other comprehensive loss (334) (15) — — (349) Amounts reclassified from accumulated other comprehensive (loss) income, net of taxes — (2) — (8) (10) Balance at March 31, 2020 $ (851) $ (20) $ 9 $ 259 $ (603) Current-period other comprehensive income (loss) 297 14 (9) — 302 Amounts reclassified from accumulated other comprehensive income (loss), net of taxes — 5 — (6) (1) Balance at March 31, 2021 $ (554) $ (1) $ — $ 253 $ (302)

Stock Incentive Plans

Stock Incentive Plans	12 Months Ended
	Mar. 31, 2021
Share-based Payment Arrangement [Abstract]
Stock Incentive Plans	Stock Incentive Plans Equity Plans As a result of the Separation of USPS, shared-based awards issued by the Company were modified. The number of stock options and exercise price were adjusted to generally preserve the intrinsic value immediately prior to the Separation. There was no incremental share-based compensation expense recognized as a result of the modification of the awards. The Compensation Committee of the Board of Directors has broad authority to grant awards and otherwise administer the DXC Employee Equity Plan. The plan became effective March 30, 2017 and will continue in effect for a period of 10 years thereafter, unless terminated earlier by the Board. The Board has the authority to amend the plan in such respects as it deems desirable, subject to approval of DXC’s stockholders for material modifications. Restricted stock units ("RSUs") represent the right to receive one share of DXC common stock upon a future settlement date, subject to vesting and other terms and conditions of the award, plus any dividend equivalents accrued during the award period. In general, if the employee’s status as a full-time employee is terminated prior to the vesting of the RSU grant in full, then the RSU grant is automatically canceled on the termination date and any unvested shares and dividend equivalents are forfeited. Certain executives were awarded service-based "career share" RSUs for which the shares are settled over the 10 anniversaries following the executive's separation from service as a full-time employee, provided the executive complies with certain non-competition covenants during that period. The Company also grants PSUs, which generally vest over a period of three years. The number of PSUs that ultimately vest is dependent upon the Company’s achievement of certain specified financial performance criteria over a 3-year period. If the specified performance criteria are met, awards are settled for shares of DXC common stock and dividend equivalents upon the filing with the SEC of the Annual Report on Form 10-K for the last fiscal year of the performance period. PSU awards include the potential for up to 25% of the shares granted to be earned after the first and second fiscal years if certain of the Company's performance targets are met early, subject to vesting based on the participant's continued employment through the end of the three-year performance period. In fiscal 2021, DXC issued awards that are considered to have a market condition. A Monte Carlo simulation model was used for the valuation of the grants. Settlement of shares for the fiscal 2021 PSU awards will be made at the end of the third fiscal year subject to certain compounded annual growth rates of the stock price and continued employment through the last day of the third fiscal year. The terms of the DXC Director Equity Plan allow DXC to grant RSU awards to non-employee directors of DXC. Such RSU awards vest in full at the earlier of (i) the first anniversary of the grant date or (ii) the next annual meeting date, and are automatically redeemed for DXC common stock and dividend equivalents either at that time or, if an RSU deferral election form is submitted, upon the date or event elected by the director. Distributions made upon a director’s separation from the Board may occur in either a lump sum or in annual installments over periods of 5, 10, or 15 years, per the director’s election. In addition, RSUs vest in full upon a change in control of DXC. The DXC Share Purchase Plan allows DXC’s employees located in the U.K. to purchase shares of DXC’s common stock at the fair market value of such shares on the applicable purchase date. There were 51,302 shares purchased under this plan during fiscal 2021. The Board has reserved for issuance shares of DXC common stock, par value $0.01 per share, under each of the plans as detailed below: As of March 31, 2021 Reserved for issuance Available for future grants DXC Employee Equity Plan 51,200,000 32,858,137 DXC Director Equity Plan 745,000 435,951 DXC Share Purchase Plan 250,000 155,308 Total 52,195,000 33,449,396 The Company recognized share-based compensation expense for fiscal 2021, 2020 and 2019 as follows: Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 March 31, 2019 Total share-based compensation cost $ 56 $ 68 $ 74 Related income tax benefit $ 6 $ 12 $ 15 Total intrinsic value of options exercised $ 1 $ 8 $ 44 Tax benefits from exercised stock options and awards $ 6 $ 14 $ 39 As of March 31, 2021, total unrecognized compensation expense related to unvested DXC RSUs, net of expected forfeitures was $135 million, respectively. The unrecognized compensation expense for unvested RSUs is expected to be recognized over a weighted-average period of 1.96 years. Stock Options The Company’s stock options vest one-third annually on each of the first three anniversaries of the grant date. Stock options are generally granted for a term of ten years. Information concerning stock options granted under stock incentive plans was as follows: Number of Option Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (in millions) Outstanding as of March 31, 2018 (1) 2,933,501 $ 32.54 5.24 $ 185 Granted — $ — Issued due to Separation modification 400,170 $ 31.72 Exercised (969,103) $ 37.33 $ 44 Canceled/Forfeited (14,607) $ 48.33 Expired (31,193) $ 25.03 Outstanding as of March 31, 2019 2,318,768 $ 30.40 4.80 $ 79 Granted — $ — Exercised (331,172) $ 31.36 $ 8 Canceled/Forfeited (2,213) $ 55.95 Expired (115,568) $ 34.97 Outstanding as of March 31, 2020 1,869,815 $ 29.92 4.27 $ — Granted — $ — Exercised (89,335) $ 16.01 $ 1 Canceled/Forfeited — $ — Expired (104,900) $ 33.53 Outstanding as of March 31, 2021 1,675,580 $ 30.43 3.61 $ 8 Vested and expected to vest in the future as of March 31, 2021 1,675,580 $ 30.43 3.61 $ 8 Exercisable as of March 31, 2021 1,675,580 $ 30.43 3.61 $ 8 (1) The amount of the weighted average exercise price per share has been revised to reflect the impact of the Separation. As of March 31, 2021 Options Outstanding Options Exercisable Range of Option Exercise Price Number Outstanding Weighted Average Exercise Price Weighted Average Remaining Contractual Term Number Exercisable Weighted Average Exercise Price $8.96 - $24.47 413,808 $ 19.72 2.56 413,808 $ 19.71 $25.14 - $41.92 798,509 $ 27.71 3.68 798,509 $ 27.71 $42.05 - $58.80 463,263 $ 44.70 4.42 463,263 $ 44.70 1,675,580 1,675,580 The cash received from stock options exercised during fiscal 2021, 2020 and 2019 was $1 million, $9 million and $34 million, respectively. Restricted Stock Information concerning RSUs and PSUs granted under the stock incentive plans was as follows: Number of Weighted Average Grant Date Fair Value Outstanding as of March 31, 2018 (1) 3,985,616 $ 47.25 Granted 1,136,002 $ 77.10 Issued due to Separation modification 649,649 $ 51.98 Released/Issued (2,207,467) $ 33.05 Canceled/Forfeited (754,025) $ 62.01 Outstanding as of March 31, 2019 2,809,775 $ 67.27 Granted 3,166,405 $ 45.58 Released/Issued (1,039,346) $ 54.39 Canceled/Forfeited (762,358) $ 59.46 Outstanding as of March 31, 2020 4,174,476 $ 55.45 Granted 8,026,810 $ 20.92 Released/Issued (1,249,681) $ 52.82 Canceled/Forfeited (2,625,385) $ 35.16 Outstanding as of March 31, 2021 8,326,220 $ 28.98 (1) The amount of the weighted average fair value per share has been revised to reflect the impact of the USPS Separation. Non-employee Director Incentives Information concerning RSUs granted to non-employee directors was as follows: Number of Weighted Average Grant Date Fair Value Outstanding as of March 31, 2018 (1) 66,386 $ 37.26 Granted 19,200 $ 87.88 Issued due to Separation modification 10,488 $ 37.69 Released/Issued (20,324) $ 51.59 Canceled/Forfeited — $ — Outstanding as of March 31, 2019 75,750 $ 46.31 Granted 62,200 $ 35.90 Released/Issued (23,335) $ 60.90 Canceled/Forfeited — $ — Outstanding as of March 31, 2020 114,615 $ 37.69 Granted 118,500 $ 18.82 Released/Issued (48,455) $ 26.90 Canceled/Forfeited — $ — Outstanding as of March 31, 2021 184,660 $ 28.42 (1) The amount of the weighted average fair value per share has been revised to reflect the impact of the USPS Separation.

Cash Flows

Cash Flows	12 Months Ended
	Mar. 31, 2021
Supplemental Cash Flow Elements [Abstract]
Cash Flows	Cash Flows Cash payments for interest on indebtedness and income taxes and other select non-cash activities are as follows: Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 March 31, 2019 Cash paid for: Interest $ 334 $ 371 $ 308 Taxes on income, net of refunds (1) $ 798 $ 247 $ 197 Non-cash activities: Operating: ROU assets obtained in exchange for lease, net (2) $ 530 $ 411 $ — Prepaid assets acquired under long-term financing $ 46 $ 99 $ 48 Investing: Capital expenditures in accounts payable and accrued expenses $ 341 $ 66 $ 45 Capital expenditures through finance lease obligations $ 348 $ 605 $ 668 Assets acquired under long-term financing $ 35 $ 376 $ 200 (Decrease) increase in deferred purchase price receivable $ (52) $ (205) $ 1,489 Contingent consideration $ 3 $ 18 $ 41 Financing: Dividends declared but not yet paid $ — $ 55 $ 53 (1) Income tax refunds were $70 million, $42 million, and $174 million for fiscal 2021, 2020, and 2019, respectively. (2) $763 million and $216 million in modifications and terminations in fiscal 2021 and 2020, respectively, and net of $87 million change in lease classification from operating to finance lease in fiscal 2020,

Other Expense (Income)

Other Expense (Income)	12 Months Ended
	Mar. 31, 2021
Other Income and Expenses [Abstract]
Other Expense (Income)	Other Expense (Income) The following table summarizes components of other expense (income), net: Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 March 31, 2019 Non-service cost components of net periodic pension expense (income) $ 110 $ (658) $ (182) Foreign currency loss (gain) 14 (25) 31 Other gain (22) (37) (155) Totals $ 102 $ (720) $ (306) Non-service cost components of net periodic pension expense resulted primarily from the actuarial loss of $537 million compared to the gain of $252 million prior year. See Note 15 - Pension and Other Benefit Plans. Foreign currency loss (gain) resulted from the movement of foreign currency exchange rates on the Company’s foreign currency denominated assets and liabilities, related hedges including options to manage its exposure to economic risk and the cost of the Company’s hedging program. Other gain primarily relates to gain on sale of non-operating assets and investment income.

Segment and Geographic Informat

Segment and Geographic Information	12 Months Ended
	Mar. 31, 2021
Segment Reporting [Abstract]
Segment and Geographic Information	Segment and Geographic Information DXC has a matrix form of organization and is managed in several different and overlapping groupings including services, industries and geographic regions. As a result, and in accordance with accounting standards, operating segments are organized by the type of services provided. DXC's chief operating decision maker ("CODM"), the chief executive officer, obtains, reviews, and manages the Company’s financial performance based on these segments. The CODM uses these results, in part, to evaluate the performance of, and allocate resources to, each of the segments. As a result of the Separation, USPS is no longer included as a reportable segment and its results have been reclassified to discontinued operations, net of taxes, for all periods presented. See Note 3 - "Divestitures." DXC now operates in two reportable segments as described below: Global Business Services GBS provides innovative technology solutions that help our customers address key business challenges and accelerate transformations tailored to each customer’s industry and specific objectives. GBS offerings include: • Analytics and Engineering . Our portfolio of analytics services and extensive partner ecosystem help customers gain rapid insights, automate operations, and accelerate their transformation journeys. We provide software engineering and solutions that enable businesses to run and manage their mission-critical functions, transform their operations, and develop new ways of doing business. • Applications. We use advanced technologies and methods to accelerate the creation, modernization, delivery and maintenance of high-quality, secure applications allowing customers to innovate faster while reducing risk, time to market, and total cost of ownership, across industries. Our vertical-specific IP includes solutions for insurance, banking and capital markets, and automotive among others. • Business process services . Include integration and optimization of front and back office processes, and agile process automation. This helps companies to reduce cost and minimize business disruption, human error, and operational risk while improving customer experiences. Global Infrastructure Services GIS provides a portfolio of technology offerings that deliver predictable outcomes and measurable results while reducing business risk and operational costs for customers. GIS offerings include: • Cloud and Security. We help customers to rapidly modernize by adapting legacy apps to cloud, migrate the right workloads, and securely manage their multi-cloud environments. Our security solutions help predict attacks, proactively respond to threats, ensure compliance and protect data, applications and infrastructure. • IT Outsourcing. Our ITO services support infrastructure, applications, and workplace IT operations, including hardware, software, physical/virtual end-user devices, collaboration tools, and IT support services. We help customers securely optimize operations to ensure continuity of their systems and respond to new business and workplace demands while achieving cost takeout, all with limited resources, expertise, and budget. • Modern Workplace. Services to fit our customer’s employee, business and IT needs from intelligent collaboration, modern device management, digital support services, Internet of Things ("IoT") and mobility services, providing a consumer-like, digital experience. Segment Measures The following table summarizes operating results regularly provided to the CODM by reportable segment and a reconciliation to the financial statements: (in millions) GBS GIS Total Reportable Segments All Other Totals Fiscal Year Ended March 31, 2021 Revenues $ 8,336 $ 9,393 $ 17,729 $ — $ 17,729 Segment Profit $ 1,120 $ 245 $ 1,365 $ (263) $ 1,102 Depreciation and amortization (1) $ 212 $ 1,122 $ 1,334 $ 106 $ 1,440 Fiscal Year Ended March 31, 2020 Revenues $ 9,111 $ 10,466 $ 19,577 $ — $ 19,577 Segment Profit $ 1,301 $ 1,007 $ 2,308 $ (247) $ 2,061 Depreciation and amortization (1) $ 199 $ 1,051 $ 1,250 $ 109 $ 1,359 Fiscal Year Ended March 31, 2019 Revenues $ 8,684 $ 12,069 $ 20,753 $ — $ 20,753 Segment Profit $ 1,645 $ 1,911 $ 3,556 $ (287) $ 3,269 Depreciation and amortization (1) $ 90 $ 1,212 $ 1,302 $ 127 $ 1,429 (1) Depreciation and amortization as presented excludes amortization of acquired intangible assets of $530 million, $583 million, and $539 million for fiscal 2021, 2020, and 2019, respectively. Reconciliation of Reportable Segment Profit to Consolidation The Company's management uses segment profit as the measure for assessing performance of its segments. Segment profit is defined as segment revenues less cost of services, segment selling, general and administrative, depreciation and amortization, and other income (excluding the movement in foreign currency exchange rates on DXC's foreign currency denominated assets and liabilities and the related economic hedges). The Company does not allocate to its segments certain operating expenses managed at the corporate level. These unallocated costs include certain corporate function costs, stock-based compensation expense, pension and OPEB actuarial and settlement gains and losses, restructuring costs, transaction, separation, and integration-related costs and amortization of acquired intangible assets. Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 March 31, 2019 Profit Total profit for reportable segment $ 1,365 $ 2,308 $ 3,556 All other loss (263) (247) (287) Interest income 98 165 128 Interest expense (361) (383) (334) Restructuring costs (551) (252) (465) Transaction, separation and integration-related costs (358) (318) (401) Amortization of acquired intangibles (530) (583) (539) Gains on dispositions 2,004 — — Pension and OPEB actuarial and settlement (losses) gains (519) 244 (143) Debt extinguishment cost (41) — — Impairment losses (190) (6,794) — Gain on arbitration award — 632 — Income (loss) from continuing operations before taxes $ 654 $ (5,228) $ 1,515 Management does not use total assets by segment to evaluate segment performance or allocate resources. As a result, assets are not tracked by segment and therefore, total assets by segment is not disclosed. Geographic Information See Note 21 - "Revenue" for the Company's revenue by geography. Property and equipment, net, which is based on the physical location of the assets, was as follows: As of (in millions) March 31, 2021 March 31, 2020 United States $ 1,189 $ 1,621 U.K. 465 493 Australia 149 134 Other Europe 603 757 Other International 540 542 Total Property and Equipment, net $ 2,946 $ 3,547 No single customer exceeded 10% of the Company’s revenues during fiscal 2021, fiscal 2020 or fiscal 2019.

Revenue

Revenue	12 Months Ended
	Mar. 31, 2021
Revenue from Contract with Customer [Abstract]
Revenue	Revenue Revenue Recognition The following table presents DXC's revenues disaggregated by geography, based on the location of incorporation of the DXC entity providing the related goods or services: Twelve Months Ended (in millions) March 31, 2021 March 31, 2020 March 31, 2019 United States $ 5,983 $ 7,225 $ 7,677 U.K. 2,413 2,776 3,175 Other Europe 5,129 5,121 5,294 Australia 1,529 1,487 1,582 Other International 2,675 2,968 3,025 Total Revenues $ 17,729 $ 19,577 $ 20,753 The revenue by geography pertains to both of the Company’s reportable segments. Refer to Note 20 - "Segment and Geographic Information" for the Company’s segment disclosures. Remaining Performance Obligations Remaining performance obligations represent the aggregate amount of the transaction price in contracts allocated to performance obligations not delivered, or partially undelivered, as of the end of the reporting period. Remaining performance obligation estimates are subject to change and are affected by several factors, including terminations, changes in the scope of contracts, periodic revalidations, adjustments for revenue that has not materialized and adjustments for currency. As of March 31, 2021, approximately $23 billion of revenue is expected to be recognized from remaining performance obligations. The Company expects to recognize revenue on approximately 39% of these remaining performance obligations in fiscal 2022, with the remainder of the balance recognized thereafter. Contract Balances The following table provides information about the balances of the Company's trade receivables and contract assets and contract liabilities: As of (in millions) March 31, 2021 March 31, 2020 Trade receivables, net $ 2,871 $ 3,059 Contract assets $ 351 $ 454 Contract liabilities $ 1,701 $ 1,756 Change in contract liabilities were as follows: (in millions) Twelve Months Ended March 31, 2021 Twelve Months Ended March 31, 2020 Balance, beginning of period $ 1,756 $ 1,886 Deferred revenue 2,933 2,910 Recognition of deferred revenue (2,922) (2,925) Currency translation adjustment 128 (48) Other (1) (194) (67) Balance, end of period $ 1,701 $ 1,756 (1) Other included contract liabilities of $52 million related to the divested HHS business discussed in Note 3 - "Divestitures" and $62 million related to HPS business and other insignificant businesses reclassified to assets held for sale discussed in Note 4 - "Assets Held for Sale". The following tables provides information about the Company’s capitalized costs to obtain and fulfill a contract: As of (in millions) March 31, 2021 March 31, 2020 Capitalized sales commission costs (1) $ 256 $ 262 Transition and transformation contract costs, net (2) $ 888 $ 874 Amortization expense of capitalized sales commission and transition and transformation contract costs were as follows: Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 March 31, 2019 Capitalized sales commission costs amortization (1) $ 70 $ 72 $ 62 Transition and transformation contract cost amortization (2) $ 264 $ 280 $ 258 (1) Capitalized sales commission costs are included within other assets in the accompanying balance sheets and amortization expense related to the capitalized sales commission assets are included in selling, general, and administrative expenses in the accompanying statements of operations. (2) Transition and transformation contract costs, net reflect the Company’s setup costs incurred upon initiation of an outsourcing contract that are classified as other assets in the accompanying balance sheets and amortization expense are included within depreciation and amortization in the accompanying statements of operations.

Restructuring Costs

Restructuring Costs	12 Months Ended
	Mar. 31, 2021
Restructuring Costs [Abstract]
Restructuring Costs	Restructuring Costs The Company recorded restructuring costs, net of reversals, of $551 million, $252 million and $465 million for fiscal 2021, 2020 and 2019, respectively. The costs recorded during fiscal 2021 were largely the result of implementing the Fiscal 2021 Plan as described below. The composition of restructuring liabilities by financial statement line items is as follows: As of (in millions) March 31, 2021 March 31, 2020 Accrued expenses and other current liabilities $ 225 $ 145 Other long-term liabilities 45 35 Total $ 270 $ 180 Summary of Restructuring Plans Fiscal 2021 Plan During fiscal 2021, management approved global cost savings initiatives designed to better align the Company's workforce and facility structures (the "Fiscal 2021 Plan"). Fiscal 2020 Plan During fiscal 2020, management approved cost savings initiatives designed to reduce operating costs by re-balancing its workforce and facilities structures (the "Fiscal 2020 Plan"). The Fiscal 2020 Plan includes workforce optimization programs and facilities and data center rationalization. Costs incurred to date under the Fiscal 2020 Plan total $296 million, comprising $279 million in employee severance and $17 million of facilities costs. Fiscal 2019 Plan During fiscal 2019, management approved global cost savings initiatives designed to better align the Company's organizational structure with its strategic initiatives and continue the integration of HPES and other acquisitions (the "Fiscal 2019 Plan"). The Fiscal 2019 Plan includes workforce optimization and rationalization of facilities and data center assets. Costs incurred to date under the Fiscal 2019 Plan total $479 million, comprising $337 million in employee severance and $142 million of facilities costs. Other Prior Year Plans In June 2017, management approved a post-HPES Merger restructuring plan to optimize the Company's operations in response to a continuing business contraction (the "Fiscal 2018 Plan"). The Fiscal 2018 Plan focuses mainly on optimizing specific aspects of global workforce, increasing the proportion of work performed in low cost offshore locations and re-balancing the pyramid structure. Additionally, this plan included global facility restructuring, including a global data center restructuring program. Costs incurred to date under the Fiscal 2018 Plan total $998 million, comprising $802 million in employee severance and $196 million of facilities costs. Acquired Restructuring Liabilities As a result of the merger of Computer Sciences Corporation ("CSC") and HPES ("HPES Merger"), DXC acquired restructuring liabilities under restructuring plans that were initiated for HPES under plans approved by the HPE Board of Directors. Restructuring activities, summarized by plan year, were as follows: Restructuring Liability as of March 31, 2020 Costs Expensed, Net of Reversals (1) Costs Not Affecting Restructuring Liability (2) Cash Paid Other (3) Restructuring Liability as of March 31, 2021 Fiscal 2021 Plan Workforce Reductions $ — $ 501 $ (11) $ (313) $ 3 $ 180 Facilities Costs — 37 (17) (14) (3) 3 Total $ — $ 538 $ (28) $ (327) $ — $ 183 Fiscal 2020 Plan Workforce Reductions (4) $ 74 $ 8 $ 1 $ (60) $ 4 $ 27 Facilities Costs 2 (4) 4 (2) — — Total $ 76 $ 4 $ 5 $ (62) $ 4 $ 27 Fiscal 2019 Plan Workforce Reductions $ 25 $ (1) $ (2) $ (17) $ 2 $ 7 Facilities Costs 5 (2) 1 (1) 3 6 Total $ 30 $ (3) $ (1) $ (18) $ 5 $ 13 Other Prior Year Plans Workforce Reductions $ 24 $ 12 $ (7) $ (19) $ 2 $ 12 Facilities Costs — — — — — — Total $ 24 $ 12 $ (7) $ (19) $ 2 $ 12 Acquired Liabilities Workforce Reductions $ 39 $ 1 $ — $ (7) $ 1 $ 34 Facilities Costs 11 (1) 1 (9) (1) 1 Total $ 50 $ — $ 1 $ (16) $ — $ 35 (1) Costs expensed, net of reversals include $11 million, $9 million, and $3 million of costs reversed from the Fiscal 2020 Plan, Fiscal 2019 Plan and Other Prior Year Plans, respectively. (2) Pension benefit augmentations recorded as a pension liability and asset impairment. (3) Foreign currency translation adjustments. (4) Fiscal 2020 workforce reductions includes a $14 million adjustment to restructuring expense related to the prior year. Restructuring Liability as of March 31, 2019 Adoption of ASC 842 (1) Costs Expensed, Net of Reversals (2) Costs Not Affecting Restructuring Liability (3) Cash Paid Other (4) Restructuring Liability as of March 31, 2020 Fiscal 2020 Plan Workforce Reductions $ — $ — $ 271 $ (11) $ (177) $ (9) $ 74 Facilities Costs — — 21 (3) (16) — 2 Total $ — $ — $ 292 $ (14) $ (193) $ (9) $ 76 Fiscal 2019 Plan Workforce Reductions $ 138 $ — $ (25) $ — $ (83) $ (5) $ 25 Facilities Costs 68 (53) — (1) (7) (2) 5 Total $ 206 $ (53) $ (25) $ (1) $ (90) $ (7) $ 30 Fiscal 2018 Plan Workforce Reductions $ 59 $ — $ (10) $ — $ (29) $ — $ 20 Facilities Costs 35 (36) (1) — (2) 4 — Total $ 94 $ (36) $ (11) $ — $ (31) $ 4 $ 20 Other Prior Year Plans Workforce Reductions $ 9 $ — $ (1) $ — $ (3) $ (1) $ 4 Facilities Costs 1 (1) — — — — — Total $ 10 $ (1) $ (1) $ — $ (3) $ (1) $ 4 Acquired Liabilities Workforce Reductions $ 51 $ — $ 1 $ — $ (16) $ 3 $ 39 Facilities Costs 18 — (4) — (1) (2) 11 Total $ 69 $ — $ (3) $ — $ (17) $ 1 $ 50 (1) Represents restructuring liability recorded as an offset to right-of-use assets upon the adoption of ASC 842. (2) Costs expensed, net of reversals include $30 million, $11 million, and $3 million of costs reversed from the Fiscal 2019 Plan, Fiscal 2018 Plan and Other Prior Year Plans, respectively. (3) Pension benefit augmentations recorded as a pension liability and asset impairment. (4) Foreign currency translation adjustments.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Mar. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Commitments The Company signed long-term purchase agreements with certain software, hardware, telecommunication and other service providers to obtain favorable pricing and terms for services and products that are necessary for the operations of business activities. Under the terms of these agreements, the Company is contractually committed to purchase specified minimums over periods ranging from one Fiscal year Minimum Purchase Commitment (in millions) 2022 $ 1,487 2023 1,227 2024 423 2025 175 2026 177 Thereafter 15 Total $ 3,504 In the normal course of business, the Company may provide certain customers with financial performance guarantees, and at times performance letters of credit or surety bonds. In general, the Company would only be liable for the amounts of these guarantees in the event that non-performance by the Company permits termination of the related contract by the Company’s customer. The Company believes it is in compliance with its performance obligations under all service contracts for which there is a financial performance guarantee, and the ultimate liability, if any, incurred in connection with these guarantees will not have a material adverse effect on its consolidated results of operations or financial position. The Company also uses stand-by letters of credit, in lieu of cash, to support various risk management insurance policies. These letters of credit represent a contingent liability and the Company would only be liable if it defaults on its payment obligations on these policies. The following table summarizes the expiration of the Company’s financial guarantees and stand-by letters of credit outstanding as of March 31, 2021: (in millions) Fiscal 2022 Fiscal 2023 Fiscal 2024 and Thereafter Totals Surety bonds $ 98 $ 18 $ 69 $ 185 Letters of credit 172 30 510 712 Stand-by letters of credit 71 26 11 108 Totals $ 341 $ 74 $ 590 $ 1,005 The Company generally indemnifies licensees of its proprietary software products against claims brought by third parties alleging infringement of their intellectual property rights, including rights in patents (with or without geographic limitations), copyrights, trademarks and trade secrets. DXC’s indemnification of its licensees relates to costs arising from court awards, negotiated settlements, and the related legal and internal costs of those licensees. The Company maintains the right, at its own cost, to modify or replace software in order to eliminate any infringement. The Company has not incurred any significant costs related to licensee software indemnification. Contingencies Strauch Fair Labor Standards Act Collective Action: On July 1, 2014, several plaintiffs filed an action in the U.S. District Court for the District of Connecticut on behalf of themselves and a putative nationwide collective of CSC system administrators, alleging CSC’s failure to properly classify these employees as non-exempt under the federal Fair Labor Standards Act ("FLSA"). Plaintiffs alleged similar state-law Rule 23 class claims pursuant to Connecticut and California statutes. Plaintiffs claimed double overtime damages, liquidated damages, and other amounts and remedies. In 2015 the Court entered an order granting conditional certification under the FLSA of the collective of over 4,000 system administrators. Approximately 1,000 system administrators filed consents with the Court to participate in the FLSA collective. The class/collective action is currently made up of approximately 800 individuals who held the title of associate professional or professional system administrator . In June 2017, the Court granted Rule 23 certification of a Connecticut state-law class and a California state-law class consisting of professional system administrators and associate professional system administrators. Senior professional system administrators were found not to qualify for Rule 23 certification under the state-law claims. CSC sought permission to appeal the Rule 23 decision to the Second Circuit Court of Appeals, which was denied. In December 2017, a jury trial was held and a verdict was returned in favor of plaintiffs. On August 6, 2019, the Court issued an order awarding plaintiffs $18.75 million in damages. In September 2019, Plaintiffs filed a motion seeking $14.1 million in attorneys’ fees and costs. In July 2020, the Court issued an order awarding Plaintiffs $8.1 million in attorneys' fees and costs. The Company disagrees with the jury verdict, the damages award, and the fee award, and is appealing the judgment of the Court. In October 2020, the Company reached an agreement in principle with the plaintiffs to resolve the matter. In February 2021, the Company executed a settlement agreement with the plaintiffs, which is now pending court approval. Computer Sciences Corporation v. Eric Pulier, et al.: On May 12, 2015, CSC filed a civil complaint in the Court of Chancery of the State of Delaware against Eric Pulier, the former CEO of Service Mesh Inc. ("SMI"), which CSC had acquired in November 2013. The complaint asserted claims for fraud, breach of contract and breach of fiduciary duty, based on allegations that Mr. Pulier had engaged in fraudulent transactions with two employees of the Commonwealth Bank of Australia Ltd. (“CBA”). The Court dismissed CSC’s claim for breach of the implied covenant of good faith, but allowed substantially all of the remaining claims to proceed. Mr. Pulier asserted counter-claims for breach of contract, fraud, negligent representation, rescission, and violations of the California Blue Sky securities law, all of which the Court dismissed in whole or in part, except for claims for breach of Mr. Pulier’s retention agreement. In July 2017, the Court granted a motion by the United States for a 90-day stay of discovery pending the completion of a criminal investigation by the U.S. Attorney's Office for the Central District of California. In September 2017, a federal grand jury returned an indictment against Mr. Pulier, charging him with conspiracy, securities and wire fraud, obstruction of justice, and other violations of federal law (United States v. Eric Pulier, CR 17-599-AB). The Government sought an extension of the stay which the Delaware Chancery Court granted. In December 2018, the Government filed an application to dismiss the indictment against Mr. Pulier, which was granted, and the indictment was dismissed with prejudice. In March 2019, the Delaware Chancery Court lifted the stay and denied CSC's motion for a temporary restraining order and preliminary injunction with respect to certain of Mr. Pulier's assets. In August 2019, the Company entered into an agreement with Mr. Pulier, resolving all claims and counterclaims in the Delaware litigation through the division of amounts previously held in escrow for post-closing disputes. In September 2017, the Securities and Exchange Commission (“SEC”) filed a complaint against Mr. Pulier in the U.S. District Court for the Central District of California alleging various claims, including for fraud and falsifying books and records ( Securities and Exchange Commission v. Eric Pulier, Case No. 2:17-cv-07124). In May 2021, the SEC and Mr. Pulier filed a Consent of Defendant Eric Pulier and a Proposed Final Judgment as to Defendant Eric Pulier, which the Court subsequently accepted and entered. With the SEC’s claims against Mr. Pulier resolved, the Company’s obligation to advance amounts for Mr. Pulier’s legal fees and costs has concluded. Kemper Corporate Services, Inc. v. Computer Sciences Corporation: In October 2015, Kemper Corporate Services, Inc. (“Kemper”) filed a demand for arbitration against CSC with the American Arbitration Association (“AAA”), alleging that CSC breached the terms of a 2009 Master Software License and Services Agreement and related Work Orders (the “Agreement”) by failing to complete a software translation and implementation plan by certain contractual deadlines. Kemper claimed breach of contract, seeking approximately $100 million in damages. CSC answered the demand for arbitration denying Kemper’s claims and asserting a counterclaim for unpaid invoices for services rendered by CSC. A single arbitrator conducted an evidentiary hearing on the merits of the claims and counterclaims in April 2017. In October 2017, the arbitrator issued a partial final award, finding for Kemper on its breach of contract theory, awarding Kemper $84.2 million in compensatory damages plus prejudgment interest, denying Kemper’s claim for rescission as moot, and denying CSC’s counterclaim. Kemper moved to confirm the award in federal district court in Texas. CSC moved to vacate the award, and in August 2018, the Magistrate Judge issued its Report and Recommendation denying CSC's vacatur motion. In September 2018, the District Court summarily accepted the Report and Recommendation without further briefing and entered a Final Judgment in the case. The Company promptly filed a notice of appeal to the Fifth Circuit Court of Appeals. Following the submission of briefs, oral argument was held on September 5, 2019. On January 10, 2020, the Court of Appeals issued a decision denying the Company’s appeal. On January 24, 2020, the Company filed a Petition for Rehearing, seeking review by the entire en banc Court of Appeals. On February 14, 2020, the Court of Appeals denied the Company’s Petition. The Company has been pursuing coverage for the full scope of the award, interest, and legal fees and expenses, under the Company's applicable insurance policies. Certain carriers have accepted coverage while others have denied coverage. On February 21, 2020, the Company paid the balance of the judgment, which net of insurance recovery, totalled $60 million. The Company has since recovered an additional $12.5 million from its insurance carriers. The Company continues to pursue recovery with its insurance carriers. Forsyth, et al. v. HP Inc. and Hewlett Packard Enterprise: On August 18, 2016, this purported class and collective action was filed in the U.S. District Court for the Northern District of California, against HP and HPE alleging violations of the Federal Age Discrimination in Employment Act (“ADEA”), the California Fair Employment and Housing Act, California public policy and the California Business and Professions Code. Former business units of HPE now owned by the Company may be proportionately liable for any recovery by plaintiffs in this matter. Plaintiffs seek to certify a nationwide class action under the ADEA comprised of all U.S. residents employed by defendants who had their employment terminated pursuant to a work force reduction (“WFR”) plan and who were 40 years of age or older at the time of termination. The class seeks to cover those impacted by WFRs on or after December 2014. Plaintiffs also seek to represent a Rule 23 class under California law comprised of all persons 40 years of age or older employed by defendants in the state of California and terminated pursuant to a WFR plan on or after August 18, 2012. In January 2017, defendants filed a partial motion to dismiss and a motion to compel arbitration of claims by certain named and opt-in plaintiffs who had signed release agreements as part of their WFR packages. In September 2017, the Court denied the partial motion to dismiss without prejudice, but granted defendants’ motions to compel arbitration for those named and opt-in plaintiffs. The Court stayed the entire action pending arbitration for these individuals, and administratively closed the case. A mediation was held in October 2018 with the 16 named and opt-in plaintiffs who were involved in the case at that time. A settlement was reached, which included seven plaintiffs who were employed by former business units of HPE that are now owned by the Company. In June 2019, a second mediation was held with 145 additional opt-in plaintiffs who were compelled to arbitration pursuant to their release agreements. In December 2019, a settlement was reached with 142 of the opt-in plaintiffs, 35 of whom were employed by former business units of HPE that are now owned by the Company, and for which the Company was liable. In December 2020, Plaintiffs filed a motion for preliminary certification of the collective action, which Defendants opposed. In April 2021, the court granted Plaintiffs’ motion for preliminary certification and lifted the previously imposed stay of the action. Former business units of the Company now owned by Perspecta may be proportionately liable for any recovery by plaintiffs in this matter. Oracle America, Inc., et al. v. Hewlett Packard Enterprise Company: On March 22, 2016, Oracle filed a complaint against HPE in the Northern District of California, alleging copyright infringement, interference with contract, intentional interference with prospective economic relations, and unfair competition. The litigation relates in part to former business units of HPE that are now owned by the Company. The Company may be required to indemnify HPE for a portion of any recovery by Oracle in the litigation related to these business units. Oracle’s claims arise primarily out of HPE’s prior relationship with a third-party maintenance provider named Terix Computer Company, Inc. (“Terix”). Oracle claims that Terix infringed its copyrights while acting as HPE’s subcontractor for certain customers of HPE’s multivendor support business. Oracle claims that HPE is liable for vicarious and contributory infringement arising from the alleged actions of Terix and for direct infringement arising from its own alleged conduct. On January 29, 2019, the court granted HPE’s motion for summary judgment and denied Oracle’s motion for summary judgment, resolving the matter in HPE’s favor. Oracle appealed the judgment to the U.S. Court of Appeals for the Ninth Circuit. In August 2020, the court granted Oracle's appeal in part. The case was then remanded to the District Court for further proceedings . In January 2021, the District Court entered a scheduling order that provided for summary judgment briefing to be completed by May 2021 and a trial date in November 2021. In re DXC Technology Company Securities Litigation: On December 27, 2018, a purported class action lawsuit was filed in the United States District Court for the Eastern District of Virginia against the Company and two of its current officers. The lawsuit asserts claims under Sections 10(b) and 20(a) of the Securities Exchange Act of 1934, as amended, and is premised on allegedly false and/or misleading statements, and alleged non-disclosure of material facts, regarding the Company’s business, operations, prospects and performance during the proposed class period of February 8, 2018 to November 6, 2018. The Company moved to dismiss the claims in their entirety, and on June 2, 2020, the court granted the Company’s motion, dismissing all claims and entering judgment in the Company's favor. On July 1, 2020, the plaintiffs filed a notice of appeal to the U.S. Court of Appeals for the Fourth Circuit. The appeal has been fully briefed and a decision on the appeal remains pending. In March 2019, three related shareholder derivative lawsuits were filed in the Eighth Judicial District Court of the State of Nevada, in and for Clark County, against one of the Company’s current officers and a former officer as well as members of the Company’s board of directors, asserting claims for breach of fiduciary duty, waste of corporate assets , and unjust enrichment. By agreement of the parties and order of the court, those lawsuits were consolidated on July 18, 2019, and are presently stayed pending the outcome of the appeal of the Eastern District of Virginia matter. On August 20, 2019, a purported class action lawsuit was filed in the Superior Court of the State of California, County of Santa Clara, against the Company, directors of the Company, and a former officer of the Company, among other defendants. On September 16, 2019, a substantially similar purported class action lawsuit was filed in the United States District Court for the Northern District of California against the Company, directors of the Company, and a former officer of the Company, among other defendants. On November 8, 2019, a third purported class action lawsuit was filed in the Superior Court of the State of California, County of San Mateo, against the Company, directors of the Company, and a former officer of the Company, among other defendants. The third lawsuit was voluntarily dismissed by the plaintiff and re-filed in the Superior Court of the State of California, County of Santa Clara on November 26, 2019, and thereafter was consolidated with the earlier-filed action in the same court on December 10, 2019. The California lawsuits assert claims under Sections 11, 12 and 15 of the Securities Act of 1933, as amended, and are premised on allegedly false and/or misleading statements, and alleged non-disclosure of material facts, regarding the Company’s prospects and expected performance. Plaintiff in the federal action filed an amended complaint on January 8, 2020. The putative class of plaintiffs in these cases includes all persons who acquired shares of the Company’s common stock pursuant to the offering documents filed with the Securities and Exchange Commission in connection with the April 2017 transaction that formed DXC. On July 15, 2020, the Superior Court of California, County of Santa Clara, denied the Company’s motion to stay the state court case but extended the Company’s deadline to seek dismissal of the state action, until after a decision on the Company’s motion to dismiss the federal action. The Company has since moved to dismiss the state action, and the court has continued the motion until after the outcome of the federal action. On July 27, 2020, the United States District Court for the Northern District of California granted the Company’s motion to dismiss the federal action. The Court’s order permitted plaintiffs to amend and refile their complaint within 60 days, and on September 25, 2020, the plaintiffs filed an amended complaint. On November 12, 2020, the Company filed a motion to dismiss the amended complaint. On April 30, 2021, the Court granted the Company’s motion to dismiss the amended complaint, while granting Plaintiffs leave to amend and refile their complaint within 30 days. On October 2, 2019, a shareholder derivative lawsuit was filed in the Eighth Judicial District Court of the State of Nevada, in and for Clark County, asserting various claims, including for breach of fiduciary duty and unjust enrichment, and challenging certain sales of securities by officers under Rule 10b5-1 plans. The shareholder filed this action after making a demand on the board of directors, alleging breaches of fiduciary duty, corporate waste and disclosure violations, and demanding that the board take certain actions to evaluate the allegations and respond. The Company’s board of directors analyzed the demand, and has determined to defer its decision on the demand pending developments in the securities and derivative lawsuits described above. The Company moved to dismiss the complaint on the basis that the Board’s decision to defer action was not a refusal of the demand and was within its discretion. The Company’s motion to dismiss was denied on January 22, 2020. By agreement of the parties and order of the court, the case is presently stayed, pending the outcome of the appeal in the Eastern District of Virginia matter. On March 31, 2020, a group of individual shareholders filed a complaint in the United States District Court for the Northern District of California, asserting non-class claims based on allegations substantially similar to those at issue in the earlier-filed putative class action complaints pending in the Northern District of California and Eastern District of Virginia. The plaintiffs assert claims under Sections 10(b) and 20(a) of the Securities Exchange Act of 1934, as amended, and under Sections 11 and 15 of the Securities Act of 1933, as amended. On April 29, 2020, the court granted an administrative motion to relate the case with the earlier-filed putative class action pending in the Northern District of California. And on May 13, 2020, the parties filed a stipulation requesting to stay the case subject to resolution of the motions to dismiss in the Northern District of California and Eastern District of Virginia class actions. The Company believes that the lawsuits described above are without merit, and it intends to vigorously defend them. Voluntary Disclosure of Certain Possible Sanctions Law Violations: On February 2, 2017, CSC submitted an initial notification of voluntary disclosure to the U.S. Department of Treasury, Office of Foreign Assets Control ("OFAC") regarding certain possible violations of U.S. sanctions laws pertaining to insurance premium data and claims data processed by two partially-owned joint ventures of Xchanging, which CSC acquired during the first quarter of fiscal 2017. A copy of the disclosure was also provided to Her Majesty’s Treasury Office of Financial Sanctions Implementation in the United Kingdom. The Company has substantially completed its internal investigation. The Company provided supplemental information to OFAC on January 31, 2020 and continues to work with OFAC on these issues. Perspecta Arbitration: In October 2019, Perspecta Inc. ("Perspecta") submitted a demand for arbitration claiming that in June 2018 DXC breached certain obligations under the Separation and Distribution Agreement ("SDA") between Perspecta and DXC and seeking at least $120 million in alleged damages. During the course of discovery, Perspecta increased the amount of its alleged damages, first to $500 million and then to over $800 million. Perspecta then increased its damages calculations to include interest, bringing its total claim to $990 million. In its arbitration demand, Perspecta also challenged $39 million in invoices issued by DXC in June 2019 under its IT Services Agreement with Perspecta ("ITSA"). Perspecta subsequently challenged an additional $31 million sought by DXC in August 2020 under the ITSA. In October 2020, a hearing was held before an arbitration panel, during which the Company and Perspecta each presented evidence on the claims at issue. In December 2020, the parties presented closing arguments and the case was submitted. In February 2021, the arbitration panel issued an interim award, finding in DXC’s favor on all matters at issue in the arbitration. Perspecta’s claims under the SDA were denied in full. Perspecta’s challenges under the ITSA were also denied in full, and DXC was awarded the full amount of its invoices, totaling $69 million. The panel further held that DXC could seek reimbursement of its costs and fees in litigating the matter, as well as pre- and post-judgment interest on the $69 million DXC was awarded. The parties submitted briefing on these issues in March 2021. In May 2021, the parties reached an agreement to settle DXC’s pending request for fees and interest. The agreement also provided for payment to DXC of the $69 million awarded to it in the arbitration. This matter is now closed. Tax Examinations: The Company is under IRS examination in the U.S. on its federal income tax returns for certain fiscal years and is in disagreement with the IRS on certain of our tax positions. For more detail, see Note 13 - "Income Taxes—Tax Examinations." In addition to the matters noted above, the Company is currently subject in the normal course of business to various claims and contingencies arising from, among other things, disputes with customers, vendors, employees, contract counterparties and other parties, as well as securities matters, environmental matters, matters concerning the licensing and use of intellectual property, and inquiries and investigations by regulatory authorities and government agencies. Some of these disputes involve or may involve litigation. The financial statements reflect the treatment of claims and contingencies based on management's view of the expected outcome. DXC consults with outside legal counsel on issues related to litigation and regulatory compliance and seeks input from other experts and advisors with respect to matters in the ordinary course of business. Although the outcome of these and other matters cannot be predicted with certainty, and the impact of the final resolution of these and other matters on the Company’s results of operations in a particular subsequent reporting period could be material and adverse, management does not believe based on information currently available to the Company, that the resolution of any of the matters currently pending against the Company will have a material adverse effect on the financial position of the Company or the ability of the Company to meet its financial obligations as they become due. Unless otherwise noted, the Company is unable to determine at this time a reasonable estimate of a possible loss or range of losses associated with the foregoing disclosed contingent matters.

Subsequent Events

Subsequent Events	12 Months Ended
	Mar. 31, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events HPS Sale On April 1, 2021, DXC completed the sale of its HPS Business to Dedalus Holding S.p.A. ("Dedalus") for €462 million (approximately $543 million), subject to certain adjustments. The sale of HPS to Dedalus is consistent with DXC’s strategy and focus on the Enterprise Technology Stack. The sale proceeds were used to repay the remainder of two series of 4.45% Senior Notes due fiscal 2023 for $154 million and $165 million.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation In order to make this report easier to read, DXC refers throughout to (i) the Consolidated Financial Statements as the “financial statements,” (ii) the Consolidated Statements of Operations as the “statements of operations,” (iii) the Consolidated Statement of Comprehensive Income (Loss) as the "statements of comprehensive income," (iv) the Consolidated Balance Sheets as the “balance sheets,” and (v) the Consolidated Statements of Cash Flows as the “statements of cash flows.” In addition, references throughout to numbered “Notes” refer to the numbered Notes in these Notes to Consolidated Financial Statements unless otherwise noted.
Use of Estimates	Use of Estimates 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 crisis, are uncertain, rapidly changing and difficult to predict. Therefore, accounting estimates and assumptions may change over time in response to the COVID-19 crisis 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.
Leases	Leases Effective April 1, 2019, the Company adopted ASU 2016-02, "Leases (ASC 842)" using the modified retrospective method. Refer to Note 7 - "Leases" for required disclosures. The Company determines if an arrangement is a lease at inception by evaluating whether the arrangement conveys the right to use an identified asset and whether DXC obtains substantially all economic benefits from and has the ability to direct the use of the asset. Operating leases are included in operating right-of-use ("ROU") assets, net, current operating lease liabilities and non-current operating lease liabilities in DXC's balance sheets. Finance leases are included in property and equipment, net, short-term debt and current maturities of long-term debt and long-term debt, net of current maturities in DXC's balance sheets. ROU assets represent the Company's right to use an underlying asset for the lease term and lease liabilities represent its obligation to make lease payments arising from the lease. Operating ROU assets and operating lease liabilities are recognized at commencement based on the present value of lease payments over the lease term. As most of the Company's leases do not provide an implicit rate, DXC uses its incremental borrowing rate based on the information available at commencement to determine the present value of lease payments. The incremental borrowing rate is the rate of interest that DXC would have to pay to borrow, on a collateralized basis, an amount equal to the lease payments, in a similar economic environment and over a similar term. The rate is dependent on several factors, including the lease term, currency of the lease payments and the Company's credit ratings. Operating ROU assets also include any lease payments made and exclude lease incentives. The Company's lease terms may include options to extend or terminate the lease. Operating ROU assets and lease liabilities include these options when it is reasonably certain that they will be exercised. Lease arrangements generally do not contain any residual value guarantees or material restrictive covenants.
Revenue Recognition	Revenue Recognition Effective April 1, 2018, the Company adopted ASU 2014-09, “Revenue from Contracts with Customers (ASC 606),” using the modified retrospective method. Refer to Note 21 - “Revenue” for required disclosures. The Company’s accounting policy related to the new revenue standard is summarized below. The Company's primary service offerings are information technology outsourcing, other professional services, or a combination thereof. Revenues are recognized when control of the promised goods or services is transferred to DXC's customers, in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services. DXC determines revenue recognition through the five-step model as follows: • Identification of the contract, or contracts, with a customer • Identification of the performance obligations in the contract • Determination of the transaction price • Allocation of the transaction price to the performance obligations in the contract • Recognition of revenue when, or as, the Company satisfies a performance obligation DXC's IT outsourcing ("ITO") arrangements typically reflect a single performance obligation that comprises a series of distinct services which are substantially the same and provided over a period of time using the same measure of progress. Revenue derived from these arrangements is recognized over time based upon the level of services delivered in the distinct periods in which they are provided based on time increments. When other parties are involved in providing goods or services as part of our customer arrangements, DXC recognizes revenue on a gross basis as a principal when it controls goods or services before they are transferred to the customer. DXC's contracts often include upfront fees billed for activities to familiarize DXC with the customers operations, take control over their administration and operation, and adapt them to DXC's solutions. Upfront fees are generally recognized ratably over the contract period, which approximates the manner in which the services are provided. These activities typically do not qualify as performance obligations, and the related revenues are allocated to the relevant performance obligations and recognized ratably over time as the performance obligation is satisfied during the period in which DXC provides the related service, which is typically the life of the contract. Software transactions that include multiple performance obligations are described below. For contracts with multiple performance obligations, DXC allocates the contract’s transaction price to each performance obligation based on the relative standalone selling price of each distinct good or service in the contract. Other than software sales involving multiple performance obligations, the primary method used to estimate standalone selling price is the expected cost plus a margin approach, under which the Company forecasts its expected costs of satisfying a performance obligation and then adds an appropriate margin for that distinct good or service. DXC's ITO arrangements may also contain embedded leases for equipment used to fulfill services. A contract with a customer includes an embedded lease when DXC grants the customer a right to control the use of an identified asset for a period of time in exchange for consideration. Embedded leases with customers are typically recognized either as a sales type lease in which revenue and co st of sales is recognized upon lease commencement; or they may be recognized as operating leases in which revenue is recognized over the usage period. Where a contract contains an embedded lease, the contract’s transaction price is allocated to the contract performance obligations and the lease component based upon the relative standalone selling price. The transaction price of a contract is determined based on fixed and variable consideration. Variable consideration related to the Company’s ITO offerings often include volume-based pricing that are allocated to the distinct days of the services to which the variable consideration pertains. However, in certain cases, estimates of variable consideration, including penalties, contingent milestone payments and rebates are necessary. The Company only includes estimates of variable consideration in the transaction price to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur. These judgments involve consideration of historical and expected experience with the customer and other similar customers, and the facts and circumstances specific to the arrangement. The Company generally provides its services under time and materials contracts, unit price contracts, fixed-price contracts, and software contracts for which revenue is recognized in the following manner: Time and materials contracts . Revenue is recognized over time at agreed-upon billing rates when services are provided. Unit-price contracts. Revenue is recognized over time based on unit metrics multiplied by the agreed upon contract unit price or when services are delivered. Fixed-price contracts. For certain fixed-price contracts, revenue is recognized over time using a method that measures the extent of progress towards completion of a performance obligation, generally using a cost-input method (referred to as the percentage-of-completion cost-to-cost method). Under the percentage-of-completion cost-to-cost method, revenue is recognized based on the proportion of total cost incurred to estimated total costs at completion. A performance obligation's estimate at completion includes all direct costs such as materials, labor, subcontractor costs, overhead, and a ratable portion of general and administrative costs. If output or input measures are not available or cannot be reasonably estimated, revenue is deferred until progress can be measured and costs are not deferred unless they meet the criteria for capitalization. Under the percentage-of-completion cost-to-cost method, progress towards completion is measured based on either achievement of specified contract milestones, costs incurred as a proportion of estimated total costs, or other measures of progress when appropriate. Profit in a given period is reported at the estimated profit margin to be achieved on the overall contract. Software contracts. Certain of DXC's arrangements involve the sale of DXC proprietary software, post contract customer support, and other software-related services. The standalone selling price generally is determined for each performance obligation using an adjusted market assessment approach based on the price charged where each deliverable is sold separately. In certain limited cases (typically for software licenses) when the historical selling price is highly variable, the residual approach is used. This approach allocates revenue to the performance obligation equal to the difference between the total transaction price and the observable standalone selling prices for the other performance obligations. Revenue from distinct software licenses is recognized at a point in time when the customer can first use the software license. If significant customization is required, software revenue is recognized as the related software customization services are performed in accordance with the percentage-of-completion method described above. Revenue for post contract customer support and other software services is recognized over time as those services are provided . Modifications. Co ntracts with our customers may be modified over the course of the contract term and may change the scope, price or both of the existing contract. Contract modifications are reviewed to determine whether they should be accounted for as part of the original contract, the termination of an existing contract and the creation of a new contract, or as a separate contract. Contract modifications are a separate contract when the modification provides additional goods and services that are distinct and the transaction price is at the standalone selling price. If the contract modification is part of the existing contract, a cumulative adjustment to revenue is recorded. If the contract modification represents the termination of the existing contract and the creation of a new contract, the modified transaction price is allocated to the prospective performance obligations and any embedded lease components. If a contract modification modifies an embedded lease component and the modification is not accounted for as a separate contract, the classification of the lease is reassessed. Practical Expedients and Exemptions DXC does not adjust the promised amount of consideration for the effects of a significant financing component when the period between when DXC transfers a promised good or service to a customer and when the customer pays for that good or service will be one year or less. In addition, the Company reports revenue net of any revenue-based taxes assessed by a governmental authority that are imposed on and concurrent with specific revenue-producing transactions, such as sales taxes and value-added taxes. Contract Balances The timing of revenue recognition, billings and cash collections results in accounts receivable (billed receivables, unbilled receivables and contract assets) and deferred revenue and advance contract payments (contract liabilities) on the Company's balance sheets. In arrangements that contain an element of customized software solutions, amounts are generally billed as work progresses in accordance with agreed-upon contractual terms, either at periodic intervals (e.g. monthly) or upon achievement of certain contractual milestones. Generally, billing occurs subsequent to revenue recognition, sometimes resulting in contract assets if the related billing is conditional upon more than just the passage of time. However, the Company sometimes receives advances or deposits from customers, before revenue is recognized, which results in the generation of contract liabilities. Payment terms vary by type of product or service being provided as well as by customer, although the term between invoicing and when payment is due is generally an insignificant period of time. Costs to Obtain a Contract Certain sales commissions earned by the Company's sales force are considered incremental and recoverable costs of obtaining a contract with a customer. The majority of sales commissions are paid based on the achievement of quota-based targets. These costs are deferred and amortized on a straight-line basis over an average period of benefit determined to be five years. The Company determined the period of benefit considering the length of its customer contracts, its technology, and other factors. The period of benefit approximates the average stated contract terms, excluding expected future renewals because sales commissions are paid upon contract renewal in a manner commensurate with the initial commissions. Some commission payments are not capitalized because they are expensed during the fiscal year as the related revenue is recognized. Capitalized sales commissions costs are classified within other assets and amortized in selling, general and administrative expenses. Costs to Fulfill a Contract Certain contract setup costs incurred upon initiation or renewal of an outsourcing contract that generate or enhance resources to be used in satisfying future performance obligations are capitalized when they are deemed recoverable. Judgment is applied to assess whether contract setup costs are capitalizable. Costs that generate or enhance resources often pertain to activities that enhance the capabilities of the services, improve customer experience, and establish a more effective and efficient IT environment. The Company recognizes these transition and transformation contract costs as other assets, which are amortized over the respective contract life.
Pension and Other Benefit Plans	Pension and Other Benefit Plans The Company accounts for its pension, other post-retirement benefit ("OPEB"), defined contribution and deferred compensation plans using the guidance of ASC 710 "Compensation – General" and ASC 715 "Compensation – Retirement Benefits." The Company recognizes actuarial gains and losses and changes in fair value of plan assets in earnings at the time of plan remeasurement as a component of net periodic benefit expense. Typically plan remeasurement occurs annually during the fourth quarter of each fiscal year. The remaining components of pension and OPEB expense, primarily current period service and interest costs and expected return on plan assets, are recorded on a quarterly basis. Inherent in the application of the actuarial methods are key assumptions, including, but not limited to, discount rates, expected long-term rates of return on plan assets, mortality rates, rates of compensation increases, and medical cost trend rates. Company management evaluates these assumptions annually and updates assumptions as necessary. The fair value of assets is determined based on the prevailing market prices or estimated fair value of investments when quoted prices are not available.
Software Development Costs	Software Development Costs After establishing technological feasibility, and until such time as the software products are available for general release to customers, the Company capitalizes costs incurred to develop commercial software products to be sold, leased or otherwise marketed. Costs incurred to establish technological feasibility are charged to expense as incurred. Enhancements to software products are capitalized where such enhancements extend the life or significantly expand the marketability of the products. Amortization of capitalized software development costs is determined separately for each software product. Annual amortization expense is calculated based on the greater of the ratio of current gross revenues for each product to the total of current and anticipated future gross revenues for the product or the straight-line amortization method over the estimated useful life of the product. Unamortized capitalized software costs associated with commercial software products are periodically evaluated for impairment on a product-by-product basis by comparing the unamortized balance to the product’s net realizable value. The net realizable value is the estimated future gross revenues from that product reduced by the related estimated future costs. When the unamortized balance exceeds the net realizable value, the unamortized balance is written down to the net realizable value and an impairment charge is recorded.
Share-Based Compensation	Share-Based Compensation Share-based awards are accounted for under the fair value method. The Company provides different forms of share-based compensation to its employees and non-employee directors. This includes stock options and restricted stock units ("RSUs"), including performance-based restricted stock units ("PSUs"). The fair value of the awards is determined on the grant date, based on the Company's closing stock price. For awards settled in shares, the Company recognizes compensation expense based on the grant-date fair value net of estimated forfeitures over the vesting period. For awards settled in ca sh, the Company recognizes compensation expense based on the fair value at each reporting date net of estimated forfeitures. The Company uses a Monte Carlo simulation model to compute the estimated fair value of PSUs with a market condition. This model includes assumptions regarding term, risk-free interest rates, expected volatility and dividend yields, which are evaluated each time the Company issues an award. The risk-free rate equals the yield, as of the Valuation Date on semi-annual zero-coupon U.S. Treasury rates. The dividend yield assumption is based on the respective fiscal year dividend payouts. Expected volatility is based on a historical approach, therefore the expected volatility assumption is based on the performance period of the award. The Company u ses the Black-Scholes-Merton model to compute the estimated fair value of options granted. This model includes assumptions regarding expected term, risk-free interest rates, expected volatility and dividend yields, which are periodically evaluated. The expected term is calculated based on the Company’s historical experience with respect to its stock plan activity and an estimate of when vested and unexercised option shares will be exercised. The expected term of options is based on job tier classifications, which have different historical exercise behavior. The risk-free interest rate is based on the zero-coupon interest rate of U.S. government issued treasury STRIPS with a period commensurate with the expected term of the options. Expected volatility is based on a blended approach, which uses a two-thirds weighting for historical volatility and one-third weighting for implied volatility. The Company’s historical volatility calculation is based on employee class and historical closing prices of the Company's peer group, in order to better align this factor with the expected terms of the stock options. DXC’s implied stock price volatility is derived from the price of exchange traded options on DXC’s stock with the longest remaining contractual term. Implied volatility is a prospective, forward looking measure representing market participants’ expectations of DXC's future stock price volatility. The dividend yield assumption is based on the respective fiscal year dividend payouts. Forfeitures are estimated based on historical experience.
Business Combinations	Business Combinations Companies acquired during each reporting period are reflected in the results of the Company effective from their respective dates of acquisition through the end of the reporting period. The Company allocates the fair value of purchase consideration to the assets acquired and liabilities assumed based on their fair values at the acquisition date. The excess of the fair value of purchase consideration over the fair value of the assets acquired and liabilities assumed in the acquired entity is recorded as goodwill. If the Company obtains new information about facts and circumstances that existed as of the acquisition date during the measurement period, which may be up to one year from the acquisition date, the Company may record adjustments to the assets acquired and liabilities assumed with the corresponding offset to goodwill. Upon the conclusion of the measurement period or final determination of the values of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded to the Company's statements of operations. For contingent consideration recorded as a liability, the Company initially measures the amount at fair value as of the acquisition date and adjusts the liability, if needed, to fair value each reporting period. Changes in the fair value of contingent consideration, other than measurement period adjustments, are recognized as income or expense. Acquisition-related expenses and post-acquisition integration costs are recognized separately from the business combination and are expensed as incurred.
Goodwill Impairment Analysis	Goodwill Impairment Analysis Effective July 1, 2019, the Company adopted ASU 2017-04, "Intangibles-Goodwill and Other (Topic 350), Simplifying the Test for Goodwill Impairment" using the prospective method. Refer to Note 12 - "Goodwill" for required disclosures. The Company tests goodwill for impairment on an annual basis as of the first day of the second fiscal quarter and between annual tests if circumstances change, or if an event occurs that would more likely than not reduce the fair value of a reporting unit below its carrying amount. The Company has defined its reporting units as its reportable segments. A significant amount of judgment is involved in determining whether an event indicating impairment has occurred between annual testing dates. Such indicators include: a significant decline in the Company's stock price, a significant decline in expected future cash flows, a significant adverse change in legal factors or in the business climate, unanticipated competition, the disposal of a significant component of a reporting unit and the testing for recoverability of a significant asset group within a reporting unit. The Company initially assesses qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. This qualitative assessment considers all relevant factors specific to the reporting units, including macroeconomic conditions, industry and market considerations, overall financial performance, and relevant entity-specific events. If the Company determines that it is not more likely that the carrying amount for a reporting unit is less than its fair value, then subsequent quantitative goodwill impairment testing is not required. If the Company determines that it is more likely than not that the carrying amount for a reporting unit is greater than its fair value, then it proceeds with a subsequent quantitative goodwill impairment test. The Company has the option to bypass the initial qualitative assessment stage and proceed directly to the quantitative goodwill impairment test. The quantitative goodwill impairment test compares each reporting unit’s fair value to its carrying value. If the reporting unit’s fair value exceeds its carrying value, no further procedures are required. However, if a reporting unit’s fair value is less than its carrying value, then an impairment charge is recorded in the amount of the excess . When the Company performs the quantitative goodwill impairment test for a reporting unit, it estimates the fair value of the reporting unit using both the income approach and the market approach. The income approach uses a discounted cash flow method in which the estimated future cash flows and terminal values for each reporting unit are discounted to present value using a discount rate. Cash flow projections are based on management's estimates of economic and market conditions, which drive key assumptions of revenue growth rates, operating margins, capital expenditures and working capital requirements. The discount rate is based on the specific risk characteristics of each reporting unit, the weighted-average cost of capital and its underlying forecasts. The market approach estimates fair value by applying performance-metric multiples to the reporting unit's prior and expected operating performance. The multiples are derived from comparable publicly traded companies that have operating and investment characteristics similar to those of the reporting unit. If the fair value of the reporting unit derived using one approach is significantly different from the fair value estimate using the other approach, the Company reevaluates its assumptions used in the two models. Assumptions are modified as considered appropriate under the circumstances until the two models yield similar and reasonable results. The fair values determined by the market approach and income approach, as described above, are weighted to determine the fair value for each reporting unit. The weighting ascribed to the market approach fair value assigned to each reporting unit is influenced by two primary factors: 1) the number of comparable publicly traded companies used in the market approach, and 2) the similarity of the operating and investment characteristics of the reporting units to the comparable publicly traded companies used in the market approach. If DXC performs a quantitative goodwill impairment test for all of its reporting units in conjunction with its annual goodwill testing, it also compares the sum of all of its reporting units’ fair values to the Company's market capitalization (per-share stock price multiplied by the number of shares outstanding) and calculates an implied control premium representing the excess of the sum of the reporting units’ fair values over the market capitalization. The Company evaluates the reasonableness of the control premium by comparing it to control premiums derived from recent comparable business combinations. If the implied control premium is not supported by market data, the Company reconciles its fair value estimates of the reporting units to a market capitalization supported by relevant market data. As a result, when DXC’s stock price and thus market capitalization is low relative to the sum of the estimated fair value of its reporting units, this reconciliation can result in reductions to the estimated fair values for the reporting units.
Fair Value	Fair Value The Company applies fair value accounting for its financial assets and liabilities and non-financial assets and liabilities that are recognized or disclosed at fair value in the financial statements on a recurring basis. The objective of a fair value measurement is to estimate the price to sell an asset or transfer a liability in an orderly transaction between market participants at the measurement date under current market conditions. Such transactions to sell an asset or transfer a liability are assumed to occur in the principal market for that asset or liability, or in the absence of the principal market, the most advantageous market. Assets and liabilities subject to fair value measurement disclosures are required to be classified according to a three-level fair value hierarchy with respect to the inputs used to determine fair value. The level in which an asset or liability is disclosed within the fair value hierarchy is based on the lowest level input that is significant to the related fair value measurement in its entirety. The levels of input are defined as follows: Level 1: Quoted prices unadjusted for identical assets or liabilities in an active market. Level 2: Quoted prices for similar assets or liabilities in an active market, quoted prices for identical similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable and market-corroborated inputs which are derived principally from or corroborated by observable market data. Level 3: Unobservable inputs that reflect the entity's own assumptions which market participants would use in pricing the asset or liability.
Receivables	Receivables The Company records receivables at their face amounts less an allowance for doubtful accounts. Receivables consist of amounts billed and currently due from customers, amounts earned but unbilled (including contracts measured under the percentage-of-completion cost-to-cost method of accounting), amounts retained by the customer until the completion of a specified contract, negotiation of contract modification and claims. Unbilled recoverable amounts under contracts in progress generally become billable upon the passage of time, the achievement of project milestones, or upon acceptance by the customer. Allowances for uncollectible billed trade receivables are estimated based on a combination of write-off history, aging analysis, any known collectability issues, and certain forward-looking information. DXC uses receivables securitization facilities or receivables sales facilities in the normal course of business as part of managing its cash flows. The Company accounts for receivables sold under these facilities as a sale of financial assets pursuant to ASC 860 “Transfers and Servicing” and derecognizes these receivables, as well as the related allowances, from its balance sheets. Generally, the fair value of the sold receivables approximates the book value due to the short-term nature and, as a result, no gain or loss on sale of receivables is recorded. Under the receivables securitization facility, the deferred purchase price (the "DPP") receivable is recorded at fair value, which is determined by calculating the expected amount of cash to be received based on unobservable inputs consisting of the face amount of the receivables adjusted for anticipated credit losses. The Company reflects cash flows related to its beneficial interests in securitization transactions, which is the DPP recorded in connection with the Company's Receivables Securitization Facility within investing activities in its statements of cash flows.
Property and Equipment	Property and Equipment Property and equipment, which includes assets under capital leases, are stated at cost less accumulated depreciation. Depreciation is computed predominantly on a straight-line basis over the estimated useful lives of the assets or the remaining lease term. The estimated useful lives of DXC's property and equipment are as follows: Buildings Up to 40 years Computers and related equipment 4 to 7 years Furniture and other equipment 3 to 15 years Leasehold improvements Shorter of lease term or useful life up to 20 years In accordance with its policy, the Company reviews the estimated useful lives of its property and equipment on an ongoing basis. As a result, effective fiscal year 2020, the Company changed its estimate of the useful lives of its computers and related equipment from an average of four four
Intangible Assets	Intangible Assets The Company's estimated useful lives for finite-lived intangibles are shown in the table below: Software 2 to 10 years Customer related intangibles Expected customer service life Acquired contract related intangibles Contract life and first contract renewal, where applicable Software is amortized using predominately the straight-line method. Acquired contract related and customer related intangible assets are amortized in proportion to the estimated undiscounted cash flows projected over the estimated life of the asset or on a straight-line basis if such cash flows cannot be reliably estimated.
Impairment of Long-Lived Assets and Finite-Lived Intangible Assets	Impairment of Long-Lived Assets and Finite-Lived Intangible Assets Long-lived assets such as property and equipment and finite-lived intangible assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset or group of assets may not be recoverable. Recoverability of long-lived assets or groups of assets is assessed based on a comparison of the carrying amount of such assets to the estimated future net cash flows. If estimated future net cash flows are less than the carrying amount of such assets, an expense is recorded in the amount required to reduce the carrying amount of such assets to fair value. Fair value is determined based on a discounted cash flow approach or, when available and appropriate, comparable market values. Long-lived assets to be disposed of are reported at the lower of their carrying amount or their fair value less costs to sell.
Income Taxes	Income Taxes The Company uses the liability method in accounting for income taxes. Deferred tax assets and liabilities are recorded for the expected future tax consequences of temporary differences between financial statement carrying amounts of assets and liabilities and their respective tax bases, using statutory tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in the results of operations in the period that includes the related enactment date. A valuation allowance is established when it is more likely than not that all or a portion of a deferred tax asset will not be realized. Changes in valuation allowances from period to period are included in the Company’s tax provision during the period in which the change occurred. In determining whether a valuation allowance is warranted, the Company considers all available positive and negative evidence, including future reversals of existing taxable temporary differences, taxable income in prior carryback years, projected future taxable income, tax planning strategies and recent financial operations. The Company recognizes uncertain tax positions when it is more likely than not that the tax position will be sustained upon examination. Uncertain tax positions are measured based on the probabilities that the uncertain tax position will be realized upon final settlement. All tax-related cash flows resulting from excess tax benefits related to the settlement of share-based awards are classified as cash flows from operating activities and cash paid by directly withholding shares for tax withholding purposes is classified as a financing activity in the statements of cash flows.
Cash and Cash Equivalents	Cash and Cash Equivalents The Company considers investments with an original maturity of three months or less to be cash equivalents. The Company’s cash equivalents consist of time deposits, money market funds and money market deposit accounts with a number of institutions that have high credit ratings.
Foreign Currency	Foreign Currency The local currency of the Company's foreign affiliates is generally their functional currency. Accordingly, the assets and liabilities of the foreign affiliates are translated from their respective functional currency to U.S. dollars using fiscal year-end exchange rates, income and expense accounts are translated at the average rates in effect during the fiscal year and equity accounts are translated at historical rates. The resulting translation adjustment is reported in the statements of comprehensive income and recorded as part of accumulated other comprehensive income ("AOCI").
Derivative Instruments	Derivative Instruments The Company designates certain derivative instruments as hedges for purposes of hedge accounting, as defined under ASC 815 “Derivatives and Hedging.” For such derivative instruments, the Company documents its risk management objectives and strategy for undertaking hedging transactions, as well as all relationships between hedging and hedged risks. The Company's derivative instruments designated for hedge accounting include interest rate swaps and foreign currency forward and option contracts. Changes in the fair value measurements of these derivative instruments are reflected as adjustments to other comprehensive income and subsequently reclassified into earnings in the period during which the hedged transactions occurred. Any ineffectiveness or excluded portion of a designated hedge is recognized in earnings. The Company also has entered into certain net investment hedges. Changes in the fair value of net investment hedges are recorded in the currency translation adjustment section of other comprehensive income and subsequently reclassified into earnings in the period the hedged item affects earnings. The Company excludes forward points from the effectiveness assessment of its net investment hedges. Changes in fair value of the excluded component are recognized in earnings. The derivative instruments not designated as hedges for purposes of hedge accounting include total return swaps and certain short-term foreign currency forward contracts. These instruments are recorded at their respective fair values and the change in their value is reported in current period earnings. The Company does not use derivative instruments for trading or speculative purpose. The Company reports the effective portion of its cash flow hedges in the same financial statement line item as changes in the fair value of the hedged item. All cash flows associated with the Company's derivative instruments are classified as operating activities in the statements of cash flows.
Recently Adopted Accounting Pronouncements and New Accounting Pronouncements	Recently Adopted Accounting Pronouncements During fiscal 2021, DXC adopted the following Accounting Standards Updates ("ASU") issued by the Financial Accounting Standards Board: Date Issued and ASU Date Adopted and Method Description Impact June 2016 ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” April 1, 2020 This update requires the measurement and recognition of expected credit losses using the current expected credit loss model for financial assets held at amortized cost, which includes the Company’s trade accounts receivable, certain financial instruments and contract assets. It replaces the existing incurred loss impairment model with an expected loss methodology. The recorded credit losses are adjusted each period for changes in expected lifetime credit losses. The standard requires a cumulative effect adjustment to the statement of financial position as of the beginning of the first reporting period in which the guidance is effective. The Company adopted this standard using the modified retrospective approach and recorded an immaterial cumulative effect adjustment in retained earnings as of April 1, 2020. August 2018 ASU 2018-15, "Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract" April 1, 2020 Prospective This update helps entities evaluate the accounting for fees paid by a customer in a cloud computing arrangement (hosting arrangement) by providing guidance for determining when the arrangement includes a software license. Entities have the option to apply this standard prospectively to all implementation costs incurred after the date of adoption or retrospectively. The Company adopted this standard using the prospective method and determined that the adoption of ASU 2018-15 had no material impact to its condensed consolidated financial statements. New Accounting Pronouncements: The following ASUs were recently issued but have not yet been adopted by DXC: Date Issued and ASU DXC Effective Date Description Impact December 2019 ASU 2019-12, "Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes" Fiscal 2022 This update is intended to simplify the accounting for income taxes by removing certain exceptions to the general principles in Topic 740. The amendments also improve consistent application of and simplify GAAP for other areas of Topic 740 by clarifying and amending existing guidance. Early adoption of this update is permitted. DXC has evaluated the impact of adopting ASU 2019-12 and determined that the adoption will be immaterial to the consolidated financial statements. Other recently issued ASUs effective after March 31, 2021 are not expected to have a material effect on DXC's consolidated financial statements.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Schedule of Estimated Useful Lives By Asset	The estimated useful lives of DXC's property and equipment are as follows: Buildings Up to 40 years Computers and related equipment 4 to 7 years Furniture and other equipment 3 to 15 years Leasehold improvements Shorter of lease term or useful life up to 20 years
Schedule of Finite-Lived Intangible Assets	The Company's estimated useful lives for finite-lived intangibles are shown in the table below: Software 2 to 10 years Customer related intangibles Expected customer service life Acquired contract related intangibles Contract life and first contract renewal, where applicable Intangible assets consisted of the following: As of March 31, 2021 (in millions) Gross Carrying Value Accumulated Amortization Net Carrying Value Software $ 4,014 $ 2,733 $ 1,281 Customer related intangible assets 4,212 1,641 2,571 Other intangible assets 239 48 191 Total intangible assets $ 8,465 $ 4,422 $ 4,043 As of March 31, 2020 (in millions) Gross Carrying Value Accumulated Amortization Net Carrying Value Software $ 4,048 $ 2,614 $ 1,434 Customer related intangible assets 5,795 1,697 4,098 Other intangible assets 235 36 199 Total intangible assets $ 10,078 $ 4,347 $ 5,731
Schedule of Recently Adopted Accounting Pronouncements and New Accounting Pronouncements	During fiscal 2021, DXC adopted the following Accounting Standards Updates ("ASU") issued by the Financial Accounting Standards Board: Date Issued and ASU Date Adopted and Method Description Impact June 2016 ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” April 1, 2020 This update requires the measurement and recognition of expected credit losses using the current expected credit loss model for financial assets held at amortized cost, which includes the Company’s trade accounts receivable, certain financial instruments and contract assets. It replaces the existing incurred loss impairment model with an expected loss methodology. The recorded credit losses are adjusted each period for changes in expected lifetime credit losses. The standard requires a cumulative effect adjustment to the statement of financial position as of the beginning of the first reporting period in which the guidance is effective. The Company adopted this standard using the modified retrospective approach and recorded an immaterial cumulative effect adjustment in retained earnings as of April 1, 2020. August 2018 ASU 2018-15, "Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract" April 1, 2020 Prospective This update helps entities evaluate the accounting for fees paid by a customer in a cloud computing arrangement (hosting arrangement) by providing guidance for determining when the arrangement includes a software license. Entities have the option to apply this standard prospectively to all implementation costs incurred after the date of adoption or retrospectively. The Company adopted this standard using the prospective method and determined that the adoption of ASU 2018-15 had no material impact to its condensed consolidated financial statements. The following ASUs were recently issued but have not yet been adopted by DXC: Date Issued and ASU DXC Effective Date Description Impact December 2019 ASU 2019-12, "Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes" Fiscal 2022 This update is intended to simplify the accounting for income taxes by removing certain exceptions to the general principles in Topic 740. The amendments also improve consistent application of and simplify GAAP for other areas of Topic 740 by clarifying and amending existing guidance. Early adoption of this update is permitted. DXC has evaluated the impact of adopting ASU 2019-12 and determined that the adoption will be immaterial to the consolidated financial statements.

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Mar. 31, 2021
Business Combinations [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The Company's allocation of the purchase price to the assets acquired and liabilities assumed as of the Luxoft acquisition date is as follows: (in millions) Fair Value Cash and cash equivalents $ 113 Accounts receivable 233 Other current assets 15 Total current assets 361 Property and equipment 31 Intangible assets 577 Other assets 99 Total assets acquired 1,068 Accounts payable, accrued payroll, accrued expenses, and other current liabilities (121) Deferred revenue (8) Long-term deferred tax liabilities and income tax payable (106) Other liabilities (72) Total liabilities assumed (307) Net identifiable assets acquired 761 Goodwill 1,262 Total consideration transferred $ 2,023
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination	Below are the estimated useful lives of the acquired intangibles: Estimated Useful Lives (Years) Customer related intangibles 10 Trade names 20 Developed technology 3 Third-party purchased software 3
Summary of Pro Forma Information	The Company's statement of operations includes the following revenues and net income attributable to Luxoft since the acquisition date: (in millions) Twelve Months Ended March 31, 2020 (1) Revenues $ 695 Net income (loss) $ (25) (1) Results for the fiscal year ended March 31, 2020 reflect operations subsequent to the acquisition date of June 14, 2019, not the full twelve months of fiscal 2020.

Divestitures (Tables)

Divestitures (Tables)	12 Months Ended
	Mar. 31, 2021
Discontinued Operations and Disposal Groups [Abstract]
Summary of Discontinued Operations	The following is a summary of the assets and liabilities distributed as part of the HHS Sale on October 1, 2020: (in millions) As of October 1, 2020 Assets: Cash and cash equivalents $ 8 Accounts receivable, net 295 Prepaid expenses 39 Other current assets 2 Total current assets 344 Intangible assets, net 1,308 Operating right-of-use assets, net 74 Goodwill 1,354 Property and equipment, net 46 Other assets 54 Total non-current assets 2,836 Total assets $ 3,180 Liabilities: Accounts payable $ 79 Accrued payroll and related costs 13 Current operating lease liabilities 27 Accrued expenses and other current liabilities 36 Deferred revenue and advance contract payments 20 Total current liabilities 175 Non-current deferred revenue 32 Long-term operating lease liabilities 48 Other long term liabilities 2 Total long-term liabilities 82 Total liabilities $ 257 The following is a summary of the assets and liabilities distributed as part of the Separation of USPS on May 31, 2018: (in millions) As of May 31, 2018 Assets: Cash and cash equivalents $ 95 Receivables, net 458 Prepaid expenses 82 Other current assets 35 Total current assets of discontinued operations 670 Intangible assets, net (1) 870 Goodwill 2,029 Property and equipment, net 294 Other assets (1) 169 Total non-current assets of discontinued operations 3,362 Total assets $ 4,032 Liabilities: Short-term debt and current maturities of long-term debt $ 161 Accounts payable 165 Accrued payroll and related costs 17 Accrued expenses and other current liabilities 358 Deferred revenue and advance contract payments 53 Income tax payable 18 Total current liabilities of discontinued operations 772 Long-term debt, net of current maturities 1,320 Non-current deferred revenue 5 Non-current income tax liabilities and deferred tax liabilities 196 Other long-term liabilities 71 Total long-term liabilities of discontinued operations 1,592 Total liabilities $ 2,364 (1) Previously reported amounts were adjusted to reflect the reclassification of transition and transformation contract costs from intangible assets to other assets to conform to the current year presentation. The following is a summary of the operating results of USPS which have been reflected within income from discontinued operations, net of tax: (in millions) Fiscal Year Ended March 31, 2019 (1) Revenue $ 431 Costs of services 311 Selling, general and administrative 50 Depreciation and amortization 33 Restructuring costs 1 Interest expense 8 Other (income) expense, net (25) Total costs and expenses 378 Total income from discontinued operations, before income taxes 53 Income tax expense 18 Total income from discontinued operations $ 35 (1) Results for the fiscal year ended March 31, 2019 reflect operations through the Separation date of May 31, 2018, not the full twelve-month period as shown for the prior period. The following selected financial information of USPS is included in the statements of cash flows: (in millions) Fiscal Year Ended March 31, 2019 (1) Depreciation $ 16 Amortization $ 17 Capital expenditures $ — Significant operating non-cash items: Gain on dispositions $ 24 (1) Results for the fiscal year ended March 31, 2019 reflect operations through the Separation date of May 31, 2018, not the full twelve-month period as shown for the prior period.

Assets Held for Sale (Tables)

Assets Held for Sale (Tables)	12 Months Ended
	Mar. 31, 2021
Discontinued Operations and Disposal Groups [Abstract]
Summary of Assets Held-for-sale	Assets held for sale are reported at carrying value, which is less than fair value. Assets held for sale and related liabilities as of March 31, 2021 were as follows: (in millions) HPS Business Other Total Assets: Cash and cash equivalents $ 28 $ 35 $ 63 Accounts receivable, net 64 17 81 Prepaid expenses 6 5 11 Other current assets — 5 5 Total current assets held for sale 98 62 160 Intangible assets, net 101 16 117 Operating right-of-use assets, net 5 18 23 Goodwill 80 9 89 Deferred income taxes, net 43 — 43 Property and equipment, net 4 52 56 Other assets 16 9 25 Total non-current assets held for sale 249 104 353 Total assets held for sale $ 347 $ 166 $ 513 Liabilities: Accounts payable $ 4 $ 8 $ 12 Accrued payroll and related costs 7 2 9 Current operating lease liabilities 2 17 19 Accrued expenses and other current liabilities 13 13 26 Deferred revenue and advance contract payments 46 6 52 Total current liabilities related to assets held for sale 72 46 118 Non-current deferred revenue 10 — 10 Long-term operating lease liabilities 3 1 4 Income tax liabilities and deferred tax liabilities 1 — 1 Other long term liabilities 3 2 5 Total long-term liabilities related to assets held for sale 17 3 20 Total liabilities related to assets held for sale $ 89 $ 49 $ 138

Earnings (Loss) Per Share (Tabl

Earnings (Loss) Per Share (Tables)	12 Months Ended
	Mar. 31, 2021
Earnings Per Share [Abstract]
Schedule of Earnings per Share	The following table reflects the calculation of basic and diluted EPS: Fiscal Years Ended (in millions, except per-share amounts) March 31, 2021 March 31, 2020 March 31, 2019 Net (loss) income attributable to DXC common shareholders: From continuing operations $ (149) $ (5,369) $ 1,222 From discontinued operations — — 35 $ (149) $ (5,369) $ 1,257 Common share information: Weighted average common shares outstanding for basic EPS 254.14 258.57 277.54 Dilutive effect of stock options and equity awards — — 3.89 Weighted average common shares outstanding for diluted EPS 254.14 258.57 281.43 EPS: Basic Continuing operations $ (0.59) $ (20.76) $ 4.40 Discontinued operations — — 0.13 Total $ (0.59) $ (20.76) $ 4.53 Diluted Continuing operations $ (0.59) $ (20.76) $ 4.35 Discontinued operations — — 0.12 Total $ (0.59) $ (20.76) $ 4.47
Schedule of Antidilutive Securities	The following table reflects awards excluded: Fiscal Years Ended March 31, 2021 (1) March 31, 2020 (1) March 31, 2019 Stock Options 1,596,985 1,075,901 — RSUs 2,768,022 2,029,567 46,051 PSUs 1,463,872 289,972 25,086 (1) Due to the Company's net loss during fiscal 2021 and fiscal 2020, stock options, RSUs and PSUs were excluded from the computation of dilutive EPS because they would have had an anti-dilutive effect.

Receivables (Tables)

Receivables (Tables)	12 Months Ended
	Mar. 31, 2021
Receivables [Abstract]
Summary of Transfer of Assets Accounted for as Sales, Deferred Purchase Price	Receivables, net of allowance for doubtful accounts consist of the following: As of (in millions) March 31, 2021 March 31, 2020 Billed trade receivables $ 2,009 $ 2,094 Unbilled receivables 1,214 1,419 Other receivables 933 879 Total $ 4,156 $ 4,392 The following table is a reconciliation of the beginning and ending balances of the DPP: As of and for the Fiscal Year Ended (in millions) March 31, 2020 Beginning balance $ 574 Transfers of receivables 1,214 Collections (1,265) Change in funding availability 2 Facility amendments (525) Ending balance $ — The following table is a reconciliation of the beginning and ending balances of the DPP: (in millions) As of March 31, 2021 As of March 31, 2020 Beginning balance $ 103 $ — Transfers of receivables 417 996 Collections (420) (879) Change in funding availability 2 (14) Facility amendments (102) — Ending balance $ — $ 103
Summary of Allowance for Doubtful Accounts for Trade Accounts Receivable	The following table presents the activity in allowances against trade accounts receivables: As of and for Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 Beginning balance $ 74 $ 60 Impact of adoption of the Credit Loss Standard 4 — Provisions for losses on accounts receivable 53 3 Other adjustments to allowance and write-off's (40) 11 Ending balance $ 91 $ 74

Leases (Tables)

Leases (Tables)	12 Months Ended
	Mar. 31, 2021
Leases [Abstract]
Components of Lease Expense and Supplemental Cash Flow Information Related to Leases	The components of lease expense were as follows: For the Fiscal Year Ended (in millions) March 31, 2021 March 31, 2020 Operating lease cost $ 616 $ 698 Short-term lease cost 53 49 Variable lease cost 56 46 Sublease income (40) (45) Total operating costs $ 685 $ 748 Finance lease cost: Amortization of right-of-use assets $ 433 $ 405 Interest on lease liabilities 45 65 Total finance lease cost $ 478 $ 470
Supplemental Balance Sheet Information Related to Leases	Cash payments made from variable lease costs and short-term leases are not included in the measurement of operating and finance lease liabilities, and as such, are excluded from the supplemental cash flow information stated below. In addition, for the supplemental non-cash information on operating and finance leases, please refer to Note 18 - "Cash Flows." For the Fiscal Year Ended (in millions) March 31, 2021 March 31, 2020 Cash paid for amounts included in the measurement of: Operating cash flows from operating leases $ 616 $ 698 Operating cash flows from finance leases $ 45 $ 65 Financing cash flows from finance leases $ 584 $ 576 Supplemental Balance Sheet information related to leases was as follows: As of (in millions) Balance Sheet Line Item March 31, 2021 March 31, 2020 Assets: ROU operating lease assets Operating right-of-use assets, net $ 1,366 $ 1,428 ROU finance lease assets Property and Equipment, net 834 $ 1,220 Total $ 2,200 $ 2,648 Liabilities: Current Operating lease Current operating lease liabilities $ 418 $ 482 Finance lease Short-term debt and current maturities of long-term debt 398 444 Total $ 816 $ 926 Non-current Operating lease Non-current operating lease liabilities $ 1,038 $ 1,063 Finance lease Long-term debt, net of current maturities 496 602 Total $ 1,534 $ 1,665 The following table provides information on the weighted average remaining lease term and weighted average discount rate for operating and finance leases: As of March 31, 2021 March 31, 2020 Weighted average remaining lease term: Years Operating leases 4.9 4.8 Finance leases 2.6 2.7 Weighted average remaining discount rate: Rate Operating leases 3.8 % 4.0 % Finance leases 3.6 % 6.4 %
Maturities of Lease Liabilities	The following maturity analysis presents expected undiscounted cash payments for operating and finance leases on an annual basis as of March 31, 2021: Fiscal year Operating Leases (in millions) Real Estate Equipment Finance Leases 2022 $ 411 $ 41 $ 418 2023 335 23 290 2024 260 11 152 2025 190 5 59 2026 108 2 14 Thereafter 207 1 — Total lease payments 1,511 83 933 Less: imputed interest 135 3 39 Total payments $ 1,376 $ 80 $ 894
Maturities of Lease Liabilities	The following maturity analysis presents expected undiscounted cash payments for operating and finance leases on an annual basis as of March 31, 2021: Fiscal year Operating Leases (in millions) Real Estate Equipment Finance Leases 2022 $ 411 $ 41 $ 418 2023 335 23 290 2024 260 11 152 2025 190 5 59 2026 108 2 14 Thereafter 207 1 — Total lease payments 1,511 83 933 Less: imputed interest 135 3 39 Total payments $ 1,376 $ 80 $ 894

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
	Mar. 31, 2021
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on a Recurring Basis	The following table presents the Company’s assets and liabilities that are measured at fair value on a recurring basis excluding pension assets and derivative assets and liabilities. See Note 15 - "Pension and Other Benefit Plans" and Note 9 - "Derivative Instruments" for information about these excluded assets and liabilities. There were no transfers between any of the levels during the periods presented. Fair Value Hierarchy (in millions) As of March 31, 2021 Assets: Fair Value Level 1 Level 2 Level 3 Money market funds and money market deposit accounts $ 12 $ 12 $ — $ — Time deposits (1) 78 78 — — Other securities (2) 57 — 55 2 Total assets $ 147 $ 90 $ 55 $ 2 Liabilities: Contingent consideration $ 27 $ — $ — $ 27 Total liabilities $ 27 $ — $ — $ 27 (in millions) As of March 31, 2020 Assets: Fair Value Level 1 Level 2 Level 3 Money market funds and money market deposit accounts $ 156 $ 156 $ — $ — Time deposits (1) 595 595 — — Other debt securities (2) 51 — 48 3 Deferred purchase price receivable 103 — — 103 Total assets $ 905 $ 751 $ 48 $ 106 Liabilities: Contingent consideration $ 46 $ — $ — $ 46 Total Liabilities $ 46 $ — $ — $ 46 (1) Cost basis approximated fair value due to the short period of time to maturity. (2) Other securities include available-for-sale equity security investments with Level 2 inputs that have a cost basis of $57 million and $37 million, and (losses)/gains of $(2) million and $11 million, as of March 31, 2021 and March 31, 2020, respectively, included in other expense (income), net in the Company’s statements of operations. During the third quarter of fiscal 2021, previously held investments were sold and the proceeds were used to purchase new investments. The gain of $17 million from the sale was included in other expense (income), net.

Derivative Instruments (Tables)

Derivative Instruments (Tables)	12 Months Ended
	Mar. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Foreign Currency Forward Contracts	The following table presents the pretax amounts impacting income related to designated and non-designated foreign currency forward contracts: Fiscal Years Ended (in millions) Statement of Operations Line Item March 31, 2021 March 31, 2020 March 31, 2019 Foreign currency forward contracts Other expense (income), net $ 51 $ (37) $ 16
Schedule of Derivative Instruments	The following tables present the fair values of derivative instruments included in the balance sheets: Derivative Assets As of (in millions) Balance Sheet Line Item March 31, 2021 March 31, 2020 Derivatives designated for hedge accounting: Foreign currency forward contracts Other current assets 9 — Total fair value of derivatives designated for hedge accounting $ 9 $ — Derivatives not designated for hedge accounting: Foreign currency forward contracts Other current assets $ 3 $ 16 Total fair value of derivatives not designated for hedge accounting $ 3 $ 16 Derivative Liabilities As of (in millions) Balance Sheet Line Item March 31, 2021 March 31, 2020 Derivatives designated for hedge accounting: Foreign currency forward contracts Accrued expenses and other current liabilities $ 5 $ 20 Total fair value of derivatives designated for hedge accounting: $ 5 $ 20 Derivatives not designated for hedge accounting: Foreign currency forward contracts Accrued expenses and other current liabilities $ 3 $ 12 Total fair value of derivatives not designated for hedge accounting $ 3 $ 12

Property and Equipment (Tables)

Property and Equipment (Tables)	12 Months Ended
	Mar. 31, 2021
Property, Plant and Equipment [Abstract]
Property and Equipment	Property and equipment consisted of the following: As of (in millions) March 31, 2021 March 31, 2020 Property and equipment — gross: Land, buildings and leasehold improvements $ 2,228 $ 2,233 Computers and related equipment 4,596 4,876 Furniture and other equipment 227 226 Construction in progress 16 30 7,067 7,365 Less: accumulated depreciation 4,121 3,818 Property and equipment, net $ 2,946 $ 3,547

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Amortizable Intangible Assets	The Company's estimated useful lives for finite-lived intangibles are shown in the table below: Software 2 to 10 years Customer related intangibles Expected customer service life Acquired contract related intangibles Contract life and first contract renewal, where applicable Intangible assets consisted of the following: As of March 31, 2021 (in millions) Gross Carrying Value Accumulated Amortization Net Carrying Value Software $ 4,014 $ 2,733 $ 1,281 Customer related intangible assets 4,212 1,641 2,571 Other intangible assets 239 48 191 Total intangible assets $ 8,465 $ 4,422 $ 4,043 As of March 31, 2020 (in millions) Gross Carrying Value Accumulated Amortization Net Carrying Value Software $ 4,048 $ 2,614 $ 1,434 Customer related intangible assets 5,795 1,697 4,098 Other intangible assets 235 36 199 Total intangible assets $ 10,078 $ 4,347 $ 5,731
Schedule of Components of Amortization Expense	The components of amortization expense were as follows: Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 March 31, 2019 Intangible asset amortization $ 952 $ 1,019 $ 890 Transition and transformation contract cost amortization (1) 264 280 258 Total amortization expense $ 1,216 $ 1,299 $ 1,148 (1) Transition and transformation contract costs are included within other assets on the balance sheet.
Estimated Future Amortization of Intangible Assets	Estimated future amortization as of March 31, 2021 is as follows: Fiscal Year (in millions) 2022 $ 837 2023 $ 755 2024 $ 669 2025 $ 554 2026 $ 505

Goodwill (Tables)

Goodwill (Tables)	12 Months Ended
	Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Changes in the Carrying Amount of Goodwill by Segment	The following tables summarize the changes in the carrying amounts of goodwill, by segment, for the fiscal years ended March 31, 2021 and March 31, 2020, respectively: (in millions) GBS GIS Total Balance as of March 31, 2020, net $ 2,017 $ — $ 2,017 Acquisition related adjustments 15 — 15 Divestitures (1,355) — (1,355) Assets held for sale (90) — (90) Foreign currency translation 54 — 54 Goodwill, gross 5,131 5,066 10,197 Accumulated impairment losses (4,490) (5,066) (9,556) Balance as of March 31, 2021, net $ 641 $ — $ 641 (in millions) GBS GIS Total Balance as of March 31, 2019, net 4,599 3,007 7,606 Acquisitions 1,288 70 1,358 Impairment Losses (3,789) (3,005) (6,794) Foreign currency translation (81) (72) (153) Goodwill, gross 6,507 5,066 11,573 Accumulated impairment losses (4,490) (5,066) (9,556) Balance as of March 31, 2020, net $ 2,017 $ — $ 2,017

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Sources Of Income Before Income Taxes Classified Between Domestic And Foreign Entities	The sources of income (loss) from continuing operations, before income taxes, classified between domestic entities and those entities domiciled outside of the United States, are as follows: Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 March 31, 2019 Domestic entities $ 975 $ (2,928) $ 511 Entities outside the United States (321) (2,300) 1,004 Total $ 654 $ (5,228) $ 1,515
Components Of Income Tax Provision	The income tax expense (benefit) on income (loss) from continuing operations is comprised of: Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 March 31, 2019 Current: Federal $ 730 $ 3 $ (50) State 257 16 42 Foreign 216 167 218 1,203 186 210 Deferred: Federal (221) (125) 95 State (51) 17 23 Foreign (131) 52 (40) (403) (56) 78 Total income tax expense $ 800 $ 130 $ 288
Federal Statutory Tax Rate To Effective Tax Rate Reconciliation	The major elements contributing to the difference between the U.S. federal statutory tax rate and the effective tax rate ("ETR") for continuing operations is below. Fiscal Years Ended March 31, 2021 March 31, 2020 March 31, 2019 Statutory rate 21.0 % (21.0) % 21.0 % State income tax, net of federal tax 10.8 (1.4) 3.2 Foreign tax rate differential (198.4) (11.9) (18.4) Goodwill impairment — 28.3 — Change in valuation allowances 239.3 12.1 16.9 Income Tax and Foreign Tax Credits (48.7) (2.6) (0.6) Arbitration Award — (3.6) — Change in uncertain tax positions 17.2 1.1 (1.5) Withholding Taxes 10.3 0.9 3.5 U.S. Tax on Foreign Income 17.6 0.4 2.4 Excess tax benefits or expense for stock compensation 2.2 0.1 (1.1) Capitalized transaction costs 0.5 0.1 0.1 United States Tax Reform (0.7) (0.7) (3.4) Change in Indefinite Reinvestment Assertion — — (3.1) Impact of Business Divestitures 52.6 — — Granite Trust Capital Loss (5.7) — — Other items, net 4.3 0.7 — Effective tax rate 122.3 % 2.5 % 19.0 %
Components Of Deferred Tax Assets and Liabilities	The deferred tax assets (liabilities) were as follows: As of (in millions) March 31, 2021 March 31, 2020 Deferred tax assets Investment basis differences $ 32 $ — Tax loss/credit carryforwards 4,039 2,516 Accrued interest 20 12 Operating lease liabilities 359 370 Contract accounting 92 126 Other assets 351 144 Total deferred tax assets 4,893 3,168 Valuation allowance (3,860) (2,162) Net deferred tax assets 1,033 1,006 Deferred tax liabilities Depreciation and amortization (513) (850) Operating right-of-use asset (339) (343) Investment basis differences — (68) Employee benefits (6) (48) Other liabilities (246) (150) Total deferred tax liabilities (1,104) (1,459) Total net deferred tax assets (liabilities) $ (71) $ (453)
Schedule of Deferred Tax Assets and Liabilities	Income tax related assets are included in the accompanying balance sheets as follows: As of (in millions) March 31, 2021 March 31, 2020 Current: Income tax receivables and prepaid taxes $ 67 $ 58 $ 67 $ 58 Non-current: Income taxes receivable and prepaid taxes $ 136 $ 180 Deferred tax assets 289 265 $ 425 $ 445 Total $ 492 $ 503 Income tax related liabilities are included in the accompanying balance sheet as follows: As of (in millions) March 31, 2021 March 31, 2020 Current: Liability for uncertain tax positions $ (30) $ (12) Income taxes payable (368) (75) $ (398) $ (87) Non-current: Deferred taxes (360) (718) Income taxes payable (130) (168) Liability for uncertain tax positions (364) (271) $ (854) $ (1,157) Total $ (1,252) $ (1,244)
Summary of Operating Loss Carryforwards	The following table provides information on the Company's various tax carryforwards: As of March 31, 2021 As of March 31, 2020 (in millions) Total With No Expiration With Expiration Expiration Dates Through Total With No Expiration With Expiration Expiration Dates Through Net operating loss carryforwards Federal $ 132 $ 128 $ 4 2033 $ 15 $ 3 $ 12 2033 State $ 369 $ 6 $ 363 2041 $ 673 $ 6 $ 667 2040 Foreign $ 16,700 $ 6,191 $ 10,509 2041 $ 10,512 $ 6,471 $ 4,041 2040 Tax credit carryforwards Federal $ 5 $ — $ 5 2040 $ 9 $ — $ 9 2040 State $ — $ — $ — N/A $ 16 $ 7 $ 9 2039 Foreign $ — $ — $ — N/A $ 16 $ — $ 16 2020 Capital loss carryforwards Federal $ — $ — $ — N/A $ — $ — $ — N/A State $ — $ — $ — N/A $ — $ — $ — N/A Foreign $ 45 $ 45 $ — N/A $ 59 $ 40 $ 19 2023
Summary of Tax Credit Carryforwards	The following table provides information on the Company's various tax carryforwards: As of March 31, 2021 As of March 31, 2020 (in millions) Total With No Expiration With Expiration Expiration Dates Through Total With No Expiration With Expiration Expiration Dates Through Net operating loss carryforwards Federal $ 132 $ 128 $ 4 2033 $ 15 $ 3 $ 12 2033 State $ 369 $ 6 $ 363 2041 $ 673 $ 6 $ 667 2040 Foreign $ 16,700 $ 6,191 $ 10,509 2041 $ 10,512 $ 6,471 $ 4,041 2040 Tax credit carryforwards Federal $ 5 $ — $ 5 2040 $ 9 $ — $ 9 2040 State $ — $ — $ — N/A $ 16 $ 7 $ 9 2039 Foreign $ — $ — $ — N/A $ 16 $ — $ 16 2020 Capital loss carryforwards Federal $ — $ — $ — N/A $ — $ — $ — N/A State $ — $ — $ — N/A $ — $ — $ — N/A Foreign $ 45 $ 45 $ — N/A $ 59 $ 40 $ 19 2023
Liabilities For Uncertain Tax Positions	In accordance with ASC 740, the Company’s liability for uncertain tax positions was as follows: Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 Tax $ 354 $ 253 Interest 46 45 Penalties 22 21 Offset to receivable (18) (24) Net of tax attributes (10) (12) Total $ 394 $ 283
Summary of Income Tax Contingencies	The following table summarizes the activity related to the Company’s uncertain tax positions (excluding interest and penalties and related tax attributes): Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 March 31, 2019 Balance at beginning of fiscal year $ 253 $ 165 $ 219 Gross increases related to prior year tax positions 60 74 4 Gross decreases related to prior year tax positions (30) (9) (27) Gross increases related to current year tax positions 102 15 — Settlements and statute of limitation expirations (36) (7) (23) Acquisitions 6 18 — Foreign exchange and others (1) (3) (8) Balance at end of fiscal year $ 354 $ 253 $ 165
Tax Examination Status	A summary of the tax years that remain subject to examination in certain of the Company’s major tax jurisdictions are: Jurisdiction: Tax Years that Remain Subject to Examination (Fiscal Year Ending): United States – Federal 2008 and forward United States – Various States 2008 and forward Australia 2012 and forward Canada 2006 and forward France 2016 and forward Germany 2010 and forward India 2001 and forward U. K. 2018 and forward

Debt (Tables)

Debt (Tables)	12 Months Ended
	Mar. 31, 2021
Debt Disclosure [Abstract]
Schedule of Debt	The following is a summary of the Company's debt: As of (in millions) Interest Rates Fiscal Year Maturities March 31, 2021 March 31, 2020 Short-term debt and current maturities of long-term debt Commercial paper (1) (0.39)% - 0.44% 2022 $ 213 $ 542 Current maturities of long-term debt Various 2022 556 290 Current maturities of finance lease liabilities 0.59% - 19.79% 2022 398 444 Short-term debt and current maturities of long-term debt $ 1,167 $ 1,276 Long-term debt, net of current maturities AUD term loan 0.94% - 0.96% 2022 — 489 GBP term loan 0.88% - 1.46% 2022 — 556 EUR term loan 0.65% 2022 - 2023 — 822 EUR term loan 0.80% (2) 2023 - 2024 469 821 USD term loan 1.40% - 2.24% 2025 — 480 $274 million Senior notes 4.45% 2023 154 276 $171 million Senior notes 4.45% 2023 165 172 $500 million Senior notes 4.25% 2025 504 505 $500 million Senior notes 4.13% 2026 496 — £250 million Senior notes 2.75% 2025 343 307 €650 million Senior notes 1.75% 2026 760 709 $500 million Senior notes 4.75% 2028 506 507 $234 million Senior notes 7.45% 2030 268 271 Revolving credit facility 1.26% - 2.08% 2024 - 2025 — 1,500 Lease credit facility 1.15% - 1.99% 2022 - 2023 — 11 Finance lease liabilities 0.59% - 19.79% 2022 - 2027 894 1,046 Borrowings for assets acquired under long-term financing 0.00% - 6.39% 2022 - 2027 672 802 Mandatorily redeemable preferred stock outstanding 6.00% 2023 63 62 Other borrowings Various 2022 - 2023 5 70 Long-term debt 5,299 9,406 Less: current maturities 954 734 Long-term debt, net of current maturities $ 4,345 $ 8,672 . (1) At DXC's option, DXC can borrow up to a maximum of €1 billion or its equivalent in €, £, and $. (2) At DXC’s option, the EUR term loan bears interest at the Eurocurrency Rate for a one-, two-, three-, or six-month interest period, plus a margin between 0.55% and 1.05%, based on published credit ratings of DXC.
Schedule of Long Term Debt Expected Maturities	Expected maturities of long-term debt, including borrowings for asset financing but excluding minimum capital lease payments, for fiscal years subsequent to March 31, 2021, are as follows: Fiscal Year (in millions) 2022 $ 555 2023 304 2024 615 2025 898 2026 1,278 Thereafter 756 Total $ 4,406

Pension and Other Benefit Pla_2

Pension and Other Benefit Plans (Tables)	12 Months Ended
	Mar. 31, 2021
Retirement Benefits [Abstract]
Schedule of Defined Benefit Plans Disclosures	Projected Benefit Obligations As of (in millions) March 31, 2021 March 31, 2020 Projected benefit obligation at beginning of year $ 10,150 $ 11,016 Service cost 91 92 Interest cost 245 237 Plan participants’ contributions 31 30 Amendments (9) — Business/contract acquisitions/divestitures 11 12 Contractual termination benefits 13 10 Settlement/curtailment (37) (60) Actuarial loss (gain) 1,262 (362) Benefits paid (393) (359) Foreign currency exchange rate changes 1,084 (457) Other (12) (9) Projected benefit obligation at end of year $ 12,436 $ 10,150 The following table summarizes the weighted average rates used in the determination of the Company’s benefit obligations: Fiscal Years Ended March 31, 2021 March 31, 2020 Discount rate 2.0 % 2.4 % Rates of increase in compensation levels 2.5 % 1.6 % Interest Crediting Rate 4.0 % N/A Fair Value of Plan Assets and Funded Status As of (in millions) March 31, 2021 March 31, 2020 Fair value of plan assets at beginning of year $ 11,090 $ 11,343 Actual return on plan assets 1,401 526 Employer contribution 117 108 Plan participants’ contributions 31 30 Benefits paid (393) (359) Business/contract acquisitions/divestitures — 7 Contractual termination benefits 7 15 Plan settlement (31) (63) Foreign currency exchange rate changes 1,224 (507) Other (21) (10) Fair value of plan assets at end of year $ 13,425 $ 11,090 Funded status at end of year $ 989 $ 940 Selected Information As of (in millions) March 31, 2021 March 31, 2020 Other assets $ 1,884 $ 1,735 Accrued expenses and other current liabilities (81) (16) Non-current pension obligations (796) (761) Other long-term liabilities - OPEB (18) (18) Net amount recorded $ 989 $ 940 Accumulated benefit obligation $ 12,346 $ 10,072 Benefit Plans with Projected Benefit Obligation in Excess of Plan Assets Benefit Plans with Accumulated Benefit Obligation in Excess of Plan Assets (in millions) March 31, 2021 March 31, 2020 March 31, 2021 March 31, 2020 Projected benefit obligation $ 2,490 $ 2,191 $ 2,453 $ 2,159 Accumulated benefit obligation $ 2,431 $ 2,131 $ 2,402 $ 2,108 Fair value of plan assets $ 1,596 $ 1,397 $ 1,562 $ 1,369 Net Periodic Pension Cost Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 March 31, 2019 Service cost $ 91 $ 92 $ 88 Interest cost 245 237 253 Expected return on assets (659) (651) (570) Amortization of transition obligation — — — Amortization of prior service costs (8) (9) (15) Contractual termination benefit 13 10 3 Settlement/curtailment (gain) loss (18) 7 (10) Recognition of actuarial loss (gain) 537 (252) 153 Net periodic pension expense (income) $ 201 $ (566) $ (98) Fiscal Years Ended March 31, 2021 March 31, 2020 March 31, 2019 Discount or settlement rates 2.4 % 2.4 % 2.5 % Expected long-term rates of return on assets 5.6 % 5.8 % 5.3 % Rates of increase in compensation levels 1.7 % 2.0 % 2.1 % Estimated Future Contributions and Benefits Payments (in millions) Employer contributions: 2022 $ 155 Benefit Payments: 2022 $ 506 2023 443 2024 444 2025 452 2026 462 2026 and thereafter 2,454 Total $ 4,761
Schedule of Amounts Recognized in Accumulated Other Comprehensive Loss	The following is a summary of amounts in AOCI, before tax effects: Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 Prior service cost $ (239) $ (247)
Schedule of Fair Value of Financial Assets for Pension and Postretirement Benefits	Fair Value of Plan Assets The tables below set forth the fair value of plan assets by asset category within the fair value hierarchy: As of March 31, 2021 (in millions) Level 1 Level 2 Level 3 Total Equity: US Domestic Stocks $ — $ — $ — $ — Global Stocks — — — — Global/International Equity commingled funds 246 2,260 — 2,506 Global equity mutual funds — — — — U.S./North American Equity commingled funds — 6 — 6 Fixed Income: Non-U.S. Government funds — — — — Fixed income commingled funds 1 42 15 58 Fixed income mutual funds — 4 — 4 Corporate bonds — 5,500 — 5,500 Alternatives: Other Alternatives (1) 1 2,706 1,930 4,637 Hedge Funds (2) — 10 1 11 Other Assets 70 65 85 220 Insurance contracts 4 380 — 384 Cash and cash equivalents 97 2 — 99 Totals $ 419 $ 10,975 $ 2,031 $ 13,425 As of March 31, 2020 (in millions) Level 1 Level 2 Level 3 Total Equity: US Domestic Stocks $ — $ 3 $ — $ 3 Global Stocks — 3 — 3 Global/International Equity commingled funds 315 1,763 — 2,078 Global equity mutual funds 8 — — 8 U.S./North American Equity commingled funds 1 4 — 5 Fixed Income: Non-U.S. Government funds 136 — — 136 Fixed income commingled funds 55 71 — 126 Fixed income mutual funds 3 — — 3 Corporate bonds 1 4,807 — 4,808 Alternatives: Other Alternatives (1) — 2,038 1,297 3,335 Hedge Funds (2) 2 7 2 11 Other Assets 87 229 59 375 Insurance contracts — 136 — 136 Cash and cash equivalents 61 2 — 63 Totals $ 669 $ 9,063 $ 1,358 $ 11,090 (1) Represents real estate and other commingled funds consisting mainly of equities, bonds, or commodities. (2) Represents investments in diversified fund of hedge funds. Changes in fair value measurements of level 3 investments for the defined benefit plans were as follows: (in millions) Balance as of March 31, 2019 $ 1,032 Actual return on plan assets held at the reporting date 83 Purchases, sales and settlements 282 Transfers in and / or out of Level 3 8 Changes due to exchange rates (47) Balance as of March 31, 2020 1,358 Actual return on plan assets held at the reporting date 233 Purchases, sales and settlements 279 Transfers in and / or out of Level 3 — Changes due to exchange rates 161 Balance as of March 31, 2021 $ 2,031 Plan Asset Allocations As of Asset Category March 31, 2021 March 31, 2020 Equity securities 19 % 19 % Debt securities 42 % 46 % Alternatives 37 % 31 % Cash and other 2 % 4 % Total 100 % 100 %

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Mar. 31, 2021
Equity [Abstract]
Summary of Class of Treasury Stock	The details of shares repurchased during fiscal 2020 and 2019 are shown below: Fiscal Year Number of shares repurchased Average Price Per Share Amount 2020 Open market purchases 12,279,107 $43.67 $ 536 ASR 3,654,544 $54.73 $ 200 2020 Total 15,933,651 $46.21 $ 736 2019 Open market purchases 19,342,586 $69.20 $ 1,339 2019 Total 19,342,586 $69.20 $ 1,339
Schedule of Dividends	Dividends The Board of Directors (the “Board”) has suspended the Company’s cash dividend payment beginning in the first quarter of fiscal 2021 to preserve cash and enhance financial flexibility in the current environment. We intend to continue to suspend quarterly cash dividends for fiscal 2022. The dividends declared during fiscal 2020 and 2019 are shown in the table below: Dividends Declared (in millions, except per share amounts) Per Common Share Total Unpaid at Fiscal Year End Fiscal 2020 $ 0.84 $ 219 $ 55 Fiscal 2019 $ 0.76 $ 209 $ 53
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table shows the changes in accumulated other comprehensive income (loss), net of taxes: (in millions) Foreign Currency Translation Adjustments Cash Flow Hedges Available-for-sale Securities Pension and Other Post-retirement Benefit Plans Accumulated Other Comprehensive Income (Loss) Balance at March 31, 2018 $ (261) $ 9 $ 9 $ 301 $ 58 Current-period other comprehensive loss (256) (22) — (21) (299) Amounts reclassified from accumulated other comprehensive income (loss), net of taxes — 10 — (13) (3) Balance at March 31, 2019 $ (517) $ (3) $ 9 $ 267 $ (244) Current-period other comprehensive loss (334) (15) — — (349) Amounts reclassified from accumulated other comprehensive (loss) income, net of taxes — (2) — (8) (10) Balance at March 31, 2020 $ (851) $ (20) $ 9 $ 259 $ (603) Current-period other comprehensive income (loss) 297 14 (9) — 302 Amounts reclassified from accumulated other comprehensive income (loss), net of taxes — 5 — (6) (1) Balance at March 31, 2021 $ (554) $ (1) $ — $ 253 $ (302)

Stock Incentive Plans (Tables)

Stock Incentive Plans (Tables)	12 Months Ended
	Mar. 31, 2021
Share-based Payment Arrangement [Abstract]
Schedule of Shares Authorized Under Stock Option Plan	The Board has reserved for issuance shares of DXC common stock, par value $0.01 per share, under each of the plans as detailed below: As of March 31, 2021 Reserved for issuance Available for future grants DXC Employee Equity Plan 51,200,000 32,858,137 DXC Director Equity Plan 745,000 435,951 DXC Share Purchase Plan 250,000 155,308 Total 52,195,000 33,449,396 As of March 31, 2021 Options Outstanding Options Exercisable Range of Option Exercise Price Number Outstanding Weighted Average Exercise Price Weighted Average Remaining Contractual Term Number Exercisable Weighted Average Exercise Price $8.96 - $24.47 413,808 $ 19.72 2.56 413,808 $ 19.71 $25.14 - $41.92 798,509 $ 27.71 3.68 798,509 $ 27.71 $42.05 - $58.80 463,263 $ 44.70 4.42 463,263 $ 44.70 1,675,580 1,675,580
Schedule of Employee Service Share-based Compensation	The Company recognized share-based compensation expense for fiscal 2021, 2020 and 2019 as follows: Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 March 31, 2019 Total share-based compensation cost $ 56 $ 68 $ 74 Related income tax benefit $ 6 $ 12 $ 15 Total intrinsic value of options exercised $ 1 $ 8 $ 44 Tax benefits from exercised stock options and awards $ 6 $ 14 $ 39
Schedule of Shares Outstanding	Information concerning stock options granted under stock incentive plans was as follows: Number of Option Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (in millions) Outstanding as of March 31, 2018 (1) 2,933,501 $ 32.54 5.24 $ 185 Granted — $ — Issued due to Separation modification 400,170 $ 31.72 Exercised (969,103) $ 37.33 $ 44 Canceled/Forfeited (14,607) $ 48.33 Expired (31,193) $ 25.03 Outstanding as of March 31, 2019 2,318,768 $ 30.40 4.80 $ 79 Granted — $ — Exercised (331,172) $ 31.36 $ 8 Canceled/Forfeited (2,213) $ 55.95 Expired (115,568) $ 34.97 Outstanding as of March 31, 2020 1,869,815 $ 29.92 4.27 $ — Granted — $ — Exercised (89,335) $ 16.01 $ 1 Canceled/Forfeited — $ — Expired (104,900) $ 33.53 Outstanding as of March 31, 2021 1,675,580 $ 30.43 3.61 $ 8 Vested and expected to vest in the future as of March 31, 2021 1,675,580 $ 30.43 3.61 $ 8 Exercisable as of March 31, 2021 1,675,580 $ 30.43 3.61 $ 8 (1) The amount of the weighted average exercise price per share has been revised to reflect the impact of the Separation. Number of Weighted Average Grant Date Fair Value Outstanding as of March 31, 2018 (1) 3,985,616 $ 47.25 Granted 1,136,002 $ 77.10 Issued due to Separation modification 649,649 $ 51.98 Released/Issued (2,207,467) $ 33.05 Canceled/Forfeited (754,025) $ 62.01 Outstanding as of March 31, 2019 2,809,775 $ 67.27 Granted 3,166,405 $ 45.58 Released/Issued (1,039,346) $ 54.39 Canceled/Forfeited (762,358) $ 59.46 Outstanding as of March 31, 2020 4,174,476 $ 55.45 Granted 8,026,810 $ 20.92 Released/Issued (1,249,681) $ 52.82 Canceled/Forfeited (2,625,385) $ 35.16 Outstanding as of March 31, 2021 8,326,220 $ 28.98 (1) The amount of the weighted average fair value per share has been revised to reflect the impact of the USPS Separation. Information concerning RSUs granted to non-employee directors was as follows: Number of Weighted Average Grant Date Fair Value Outstanding as of March 31, 2018 (1) 66,386 $ 37.26 Granted 19,200 $ 87.88 Issued due to Separation modification 10,488 $ 37.69 Released/Issued (20,324) $ 51.59 Canceled/Forfeited — $ — Outstanding as of March 31, 2019 75,750 $ 46.31 Granted 62,200 $ 35.90 Released/Issued (23,335) $ 60.90 Canceled/Forfeited — $ — Outstanding as of March 31, 2020 114,615 $ 37.69 Granted 118,500 $ 18.82 Released/Issued (48,455) $ 26.90 Canceled/Forfeited — $ — Outstanding as of March 31, 2021 184,660 $ 28.42 (1) The amount of the weighted average fair value per share has been revised to reflect the impact of the USPS Separation.

Cash Flows (Tables)

Cash Flows (Tables)	12 Months Ended
	Mar. 31, 2021
Supplemental Cash Flow Elements [Abstract]
Schedule of Cash Payments for Interest on Indebtedness and for Income Taxes	Cash payments for interest on indebtedness and income taxes and other select non-cash activities are as follows: Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 March 31, 2019 Cash paid for: Interest $ 334 $ 371 $ 308 Taxes on income, net of refunds (1) $ 798 $ 247 $ 197 Non-cash activities: Operating: ROU assets obtained in exchange for lease, net (2) $ 530 $ 411 $ — Prepaid assets acquired under long-term financing $ 46 $ 99 $ 48 Investing: Capital expenditures in accounts payable and accrued expenses $ 341 $ 66 $ 45 Capital expenditures through finance lease obligations $ 348 $ 605 $ 668 Assets acquired under long-term financing $ 35 $ 376 $ 200 (Decrease) increase in deferred purchase price receivable $ (52) $ (205) $ 1,489 Contingent consideration $ 3 $ 18 $ 41 Financing: Dividends declared but not yet paid $ — $ 55 $ 53 (1) Income tax refunds were $70 million, $42 million, and $174 million for fiscal 2021, 2020, and 2019, respectively. (2) $763 million and $216 million in modifications and terminations in fiscal 2021 and 2020, respectively, and net of $87 million change in lease classification from operating to finance lease in fiscal 2020,

Other Expense (Income) (Tables)

Other Expense (Income) (Tables)	12 Months Ended
	Mar. 31, 2021
Other Income and Expenses [Abstract]
Schedule of Other Expense (Income)	The following table summarizes components of other expense (income), net: Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 March 31, 2019 Non-service cost components of net periodic pension expense (income) $ 110 $ (658) $ (182) Foreign currency loss (gain) 14 (25) 31 Other gain (22) (37) (155) Totals $ 102 $ (720) $ (306)

Segment and Geographic Inform_2

Segment and Geographic Information (Tables)	12 Months Ended
	Mar. 31, 2021
Segment Reporting [Abstract]
Schedule of Operating Results by Reportable Segment	The following table summarizes operating results regularly provided to the CODM by reportable segment and a reconciliation to the financial statements: (in millions) GBS GIS Total Reportable Segments All Other Totals Fiscal Year Ended March 31, 2021 Revenues $ 8,336 $ 9,393 $ 17,729 $ — $ 17,729 Segment Profit $ 1,120 $ 245 $ 1,365 $ (263) $ 1,102 Depreciation and amortization (1) $ 212 $ 1,122 $ 1,334 $ 106 $ 1,440 Fiscal Year Ended March 31, 2020 Revenues $ 9,111 $ 10,466 $ 19,577 $ — $ 19,577 Segment Profit $ 1,301 $ 1,007 $ 2,308 $ (247) $ 2,061 Depreciation and amortization (1) $ 199 $ 1,051 $ 1,250 $ 109 $ 1,359 Fiscal Year Ended March 31, 2019 Revenues $ 8,684 $ 12,069 $ 20,753 $ — $ 20,753 Segment Profit $ 1,645 $ 1,911 $ 3,556 $ (287) $ 3,269 Depreciation and amortization (1) $ 90 $ 1,212 $ 1,302 $ 127 $ 1,429 (1) Depreciation and amortization as presented excludes amortization of acquired intangible assets of $530 million, $583 million, and $539 million for fiscal 2021, 2020, and 2019, respectively.
Reconciliation of Consolidated Operating Income to Income Before Taxes	Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 March 31, 2019 Profit Total profit for reportable segment $ 1,365 $ 2,308 $ 3,556 All other loss (263) (247) (287) Interest income 98 165 128 Interest expense (361) (383) (334) Restructuring costs (551) (252) (465) Transaction, separation and integration-related costs (358) (318) (401) Amortization of acquired intangibles (530) (583) (539) Gains on dispositions 2,004 — — Pension and OPEB actuarial and settlement (losses) gains (519) 244 (143) Debt extinguishment cost (41) — — Impairment losses (190) (6,794) — Gain on arbitration award — 632 — Income (loss) from continuing operations before taxes $ 654 $ (5,228) $ 1,515
Revenue and Property and Equipment, and Total Assets by Geographic Segment	Property and equipment, net, which is based on the physical location of the assets, was as follows: As of (in millions) March 31, 2021 March 31, 2020 United States $ 1,189 $ 1,621 U.K. 465 493 Australia 149 134 Other Europe 603 757 Other International 540 542 Total Property and Equipment, net $ 2,946 $ 3,547

Revenue (Tables)

Revenue (Tables)	12 Months Ended
	Mar. 31, 2021
Revenue from Contract with Customer [Abstract]
Summary of Revenue Disaggregated by Geography	The following table presents DXC's revenues disaggregated by geography, based on the location of incorporation of the DXC entity providing the related goods or services: Twelve Months Ended (in millions) March 31, 2021 March 31, 2020 March 31, 2019 United States $ 5,983 $ 7,225 $ 7,677 U.K. 2,413 2,776 3,175 Other Europe 5,129 5,121 5,294 Australia 1,529 1,487 1,582 Other International 2,675 2,968 3,025 Total Revenues $ 17,729 $ 19,577 $ 20,753
Summary of Contract Assets and Liabilities	The following table provides information about the balances of the Company's trade receivables and contract assets and contract liabilities: As of (in millions) March 31, 2021 March 31, 2020 Trade receivables, net $ 2,871 $ 3,059 Contract assets $ 351 $ 454 Contract liabilities $ 1,701 $ 1,756 Change in contract liabilities were as follows: (in millions) Twelve Months Ended March 31, 2021 Twelve Months Ended March 31, 2020 Balance, beginning of period $ 1,756 $ 1,886 Deferred revenue 2,933 2,910 Recognition of deferred revenue (2,922) (2,925) Currency translation adjustment 128 (48) Other (1) (194) (67) Balance, end of period $ 1,701 $ 1,756 (1) Other included contract liabilities of $52 million related to the divested HHS business discussed in Note 3 - "Divestitures" and $62 million related to HPS business and other insignificant businesses reclassified to assets held for sale discussed in Note 4 - "Assets Held for Sale".
Summary of Capitalized Contract Costs	The following tables provides information about the Company’s capitalized costs to obtain and fulfill a contract: As of (in millions) March 31, 2021 March 31, 2020 Capitalized sales commission costs (1) $ 256 $ 262 Transition and transformation contract costs, net (2) $ 888 $ 874 Amortization expense of capitalized sales commission and transition and transformation contract costs were as follows: Fiscal Years Ended (in millions) March 31, 2021 March 31, 2020 March 31, 2019 Capitalized sales commission costs amortization (1) $ 70 $ 72 $ 62 Transition and transformation contract cost amortization (2) $ 264 $ 280 $ 258 (1) Capitalized sales commission costs are included within other assets in the accompanying balance sheets and amortization expense related to the capitalized sales commission assets are included in selling, general, and administrative expenses in the accompanying statements of operations. (2) Transition and transformation contract costs, net reflect the Company’s setup costs incurred upon initiation of an outsourcing contract that are classified as other assets in the accompanying balance sheets and amortization expense are included within depreciation and amortization in the accompanying statements of operations.

Restructuring Costs (Tables)

Restructuring Costs (Tables)	12 Months Ended
	Mar. 31, 2021
Restructuring Costs [Abstract]
Schedule of Restructuring Expense	The composition of restructuring liabilities by financial statement line items is as follows: As of (in millions) March 31, 2021 March 31, 2020 Accrued expenses and other current liabilities $ 225 $ 145 Other long-term liabilities 45 35 Total $ 270 $ 180
Schedule of Restructuring Activities	Restructuring activities, summarized by plan year, were as follows: Restructuring Liability as of March 31, 2020 Costs Expensed, Net of Reversals (1) Costs Not Affecting Restructuring Liability (2) Cash Paid Other (3) Restructuring Liability as of March 31, 2021 Fiscal 2021 Plan Workforce Reductions $ — $ 501 $ (11) $ (313) $ 3 $ 180 Facilities Costs — 37 (17) (14) (3) 3 Total $ — $ 538 $ (28) $ (327) $ — $ 183 Fiscal 2020 Plan Workforce Reductions (4) $ 74 $ 8 $ 1 $ (60) $ 4 $ 27 Facilities Costs 2 (4) 4 (2) — — Total $ 76 $ 4 $ 5 $ (62) $ 4 $ 27 Fiscal 2019 Plan Workforce Reductions $ 25 $ (1) $ (2) $ (17) $ 2 $ 7 Facilities Costs 5 (2) 1 (1) 3 6 Total $ 30 $ (3) $ (1) $ (18) $ 5 $ 13 Other Prior Year Plans Workforce Reductions $ 24 $ 12 $ (7) $ (19) $ 2 $ 12 Facilities Costs — — — — — — Total $ 24 $ 12 $ (7) $ (19) $ 2 $ 12 Acquired Liabilities Workforce Reductions $ 39 $ 1 $ — $ (7) $ 1 $ 34 Facilities Costs 11 (1) 1 (9) (1) 1 Total $ 50 $ — $ 1 $ (16) $ — $ 35 (1) Costs expensed, net of reversals include $11 million, $9 million, and $3 million of costs reversed from the Fiscal 2020 Plan, Fiscal 2019 Plan and Other Prior Year Plans, respectively. (2) Pension benefit augmentations recorded as a pension liability and asset impairment. (3) Foreign currency translation adjustments. (4) Fiscal 2020 workforce reductions includes a $14 million adjustment to restructuring expense related to the prior year. Restructuring Liability as of March 31, 2019 Adoption of ASC 842 (1) Costs Expensed, Net of Reversals (2) Costs Not Affecting Restructuring Liability (3) Cash Paid Other (4) Restructuring Liability as of March 31, 2020 Fiscal 2020 Plan Workforce Reductions $ — $ — $ 271 $ (11) $ (177) $ (9) $ 74 Facilities Costs — — 21 (3) (16) — 2 Total $ — $ — $ 292 $ (14) $ (193) $ (9) $ 76 Fiscal 2019 Plan Workforce Reductions $ 138 $ — $ (25) $ — $ (83) $ (5) $ 25 Facilities Costs 68 (53) — (1) (7) (2) 5 Total $ 206 $ (53) $ (25) $ (1) $ (90) $ (7) $ 30 Fiscal 2018 Plan Workforce Reductions $ 59 $ — $ (10) $ — $ (29) $ — $ 20 Facilities Costs 35 (36) (1) — (2) 4 — Total $ 94 $ (36) $ (11) $ — $ (31) $ 4 $ 20 Other Prior Year Plans Workforce Reductions $ 9 $ — $ (1) $ — $ (3) $ (1) $ 4 Facilities Costs 1 (1) — — — — — Total $ 10 $ (1) $ (1) $ — $ (3) $ (1) $ 4 Acquired Liabilities Workforce Reductions $ 51 $ — $ 1 $ — $ (16) $ 3 $ 39 Facilities Costs 18 — (4) — (1) (2) 11 Total $ 69 $ — $ (3) $ — $ (17) $ 1 $ 50 (1) Represents restructuring liability recorded as an offset to right-of-use assets upon the adoption of ASC 842. (2) Costs expensed, net of reversals include $30 million, $11 million, and $3 million of costs reversed from the Fiscal 2019 Plan, Fiscal 2018 Plan and Other Prior Year Plans, respectively. (3) Pension benefit augmentations recorded as a pension liability and asset impairment. (4) Foreign currency translation adjustments.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Mar. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Schedule of Long-term Purchase Agreements	Minimum purchase commitments as of March 31, 2021 were as follows: Fiscal year Minimum Purchase Commitment (in millions) 2022 $ 1,487 2023 1,227 2024 423 2025 175 2026 177 Thereafter 15 Total $ 3,504
Expiration of Financial Guarantees And Stand-by Letters Of Credit Outstanding	The following table summarizes the expiration of the Company’s financial guarantees and stand-by letters of credit outstanding as of March 31, 2021: (in millions) Fiscal 2022 Fiscal 2023 Fiscal 2024 and Thereafter Totals Surety bonds $ 98 $ 18 $ 69 $ 185 Letters of credit 172 30 510 712 Stand-by letters of credit 71 26 11 108 Totals $ 341 $ 74 $ 590 $ 1,005

Summary of Significant Accoun_4

Summary of Significant Accounting Policies (Details) € in Millions, $ in Millions	Apr. 01, 2021EUR (€)	Apr. 01, 2021USD ($)	Mar. 31, 2021	Oct. 01, 2020USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Amortization period			5 years
HPS Business | Subsequent Event
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Transaction consideration	€ 462	$ 543
HHS Business | Discontinued Operations, Disposed of by Sale
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Transaction consideration				$ 5,000

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Property and Equipment (Details) - USD ($) $ in Millions	Mar. 31, 2019	Mar. 31, 2021	Mar. 31, 2020
Property, Plant, and Equipment - Useful Life [Abstract]
Decrease in depreciation			$ 225
Building
Property, Plant, and Equipment - Useful Life [Abstract]
Property, plant and equipment useful life		40 years
Computers and related equipment | Minimum
Property, Plant, and Equipment - Useful Life [Abstract]
Property, plant and equipment useful life	4 years	4 years
Computers and related equipment | Maximum
Property, Plant, and Equipment - Useful Life [Abstract]
Property, plant and equipment useful life	5 years	7 years
Furniture and other equipment | Minimum
Property, Plant, and Equipment - Useful Life [Abstract]
Property, plant and equipment useful life		3 years
Furniture and other equipment | Maximum
Property, Plant, and Equipment - Useful Life [Abstract]
Property, plant and equipment useful life		15 years
Leasehold improvements | Maximum
Property, Plant, and Equipment - Useful Life [Abstract]
Property, plant and equipment useful life		20 years

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Intangible Assets (Details) - Software	12 Months Ended
	Mar. 31, 2021
Minimum
Finite-Lived Intangible Assets [Line Items]
Useful life	2 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Useful life	10 years

Acquisitions - Narrative (Detai

Acquisitions - Narrative (Details) $ in Millions	Jan. 01, 2021USD ($)	Jun. 14, 2019USD ($)	Oct. 01, 2018USD ($)	Mar. 31, 2020USD ($)acquisition	Mar. 31, 2021USD ($)	Mar. 31, 2019USD ($)
Business Acquisition [Line Items]
Goodwill acquired				$ 2,017	$ 641	$ 7,606
Goodwill				2,017	$ 641	$ 7,606
AXA Bank Germany
Business Acquisition [Line Items]
Total consideration	$ 101
Cash received in acquisition	294
Customer deposit liabilities acquired	197
Goodwill acquired	2
Goodwill	$ 2
Luxoft
Business Acquisition [Line Items]
Total consideration		$ 2,000
Cash received in acquisition		113
Goodwill acquired		$ 1,262
Percentage of business acquired		100.00%
Current assets acquired		$ 361
Other assets		99
Other liabilities		72
Goodwill		$ 1,262
Molina Medicaid Solutions
Business Acquisition [Line Items]
Total consideration			$ 233
Goodwill acquired			92
Current assets acquired			87
Intangible assets, other than goodwill			112
Other assets			11
Current liabilities			51
Other liabilities			18
Goodwill			$ 92
Useful lives (years)			13 years
Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Total consideration				228
Goodwill acquired				137
Current assets acquired				73
Intangible assets, other than goodwill				71
Other assets				10
Current liabilities				63
Goodwill				$ 137
Number of businesses acquired | acquisition				7
Payments to acquire businesses				$ 187
Contingent consideration				$ 41

Acquisitions - Luxoft, Purchase

Acquisitions - Luxoft, Purchase Price Allocation (Details) - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020	Jun. 14, 2019	Mar. 31, 2019
Business Acquisition [Line Items]
Goodwill	$ 641	$ 2,017		$ 7,606
Luxoft
Business Acquisition [Line Items]
Cash and cash equivalents			$ 113
Accounts receivable			233
Other current assets			15
Total current assets			361
Property and equipment			31
Intangible assets			577
Other assets			99
Total assets acquired			1,068
Accounts payable, accrued payroll, accrued expenses, and other current liabilities			(121)
Deferred revenue			(8)
Long-term deferred tax liabilities and income tax payable			(106)
Other liabilities			(72)
Total liabilities assumed			(307)
Net identifiable assets acquired			761
Goodwill			1,262
Total consideration transferred			$ 2,023

Acquisitions - Luxoft, Identifi

Acquisitions - Luxoft, Identified Intangibles (Details) - Luxoft	Jun. 14, 2019
Customer related intangible assets
Business Acquisition [Line Items]
Estimated Useful Lives (Years)	10 years
Trade names
Business Acquisition [Line Items]
Estimated Useful Lives (Years)	20 years
Developed technology
Business Acquisition [Line Items]
Estimated Useful Lives (Years)	3 years
Third-party purchased software
Business Acquisition [Line Items]
Estimated Useful Lives (Years)	3 years

Acquisitions - Luxoft, Results

Acquisitions - Luxoft, Results of Operations (Details) - Luxoft $ in Millions	12 Months Ended
	Mar. 31, 2021USD ($)
Business Acquisition [Line Items]
Revenues	$ 695
Net income (loss)	$ (25)

Divestitures - Narrative (Detai

Divestitures - Narrative (Details) € in Millions, £ in Millions, $ in Millions, $ in Millions

Oct. 01, 2020USD ($)

May 31, 2018USD ($)

Oct. 31, 2020USD ($)

Oct. 31, 2020EUR (€)

Oct. 31, 2020GBP (£)

Oct. 31, 2020AUD ($)

Dec. 31, 2020USD ($)

Jun. 30, 2020USD ($)

Jun. 30, 2020AUD ($)

Dec. 31, 2020USD ($)

Mar. 31, 2021USD ($)

Mar. 31, 2020USD ($)

Mar. 31, 2019USD ($)

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Repayments of debt

$ 3,500

$ 3,552

$ 1,039

$ 2,625

Gain (loss) on sale

2,004

0

0

Commercial paper

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Repayments of debt

772

£ 600

Loans payable

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Repayments of debt

$ 1,441

Loans payable | Term Loan Payable, EUR, Due 2024

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Repayments of debt

410

€ 350

Loans payable | Term Loan Payable, USD, Due 2025

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Repayments of debt

381

$ 100

Loans payable | Term Loan Payable, AUD, Due 2022

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Repayments of debt

358

$ 500

$ 300

Loans payable | Term Loan Payable, EUR, Due 2022-2023

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Repayments of debt

292

€ 250

Revolving credit facility | Line of credit

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Repayments of debt

$ 1,250

$ 4,000

Series Of Insignificant Disposal Groups

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Gain (loss) on sale

(10)

Discontinued Operations, Disposed of by Sale | HHS Business

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Transaction consideration

$ 5,000

Portion of consideration related to future services to be provided

85

Gain (loss) on sale

2,014

Discontinued Operations, Disposed of by Sale | HHS Business | Milano Purchasers

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Repurchase receivables transferred

272

Prepaid maintenance transferred

12

Software licenses transferred

$ 48

Discontinued Operations, Disposed of by Means Other than Sale, Spinoff | USPS Separation, IT Services Agreement

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Revenue

$ 31

$ 39

Discontinued Operations, Disposed of by Means Other than Sale, Spinoff | USPS Separation

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Transaction consideration

$ 1,050

Revenue

431

Gain (loss) on sale

0

$ 24

Amount of cash consideration received

984

Debt assumed

$ 66

Divestitures - Assets and Liabi

Divestitures - Assets and Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2021	Oct. 01, 2020	Mar. 31, 2020	May 31, 2018
Assets:
Total current assets	$ 160		$ 0
Total non-current assets	353		0
Liabilities:
Total current liabilities	118		0
Total long-term liabilities	$ 20		$ 0
HHS Business | Discontinued Operations, Disposed of by Sale
Assets:
Cash and cash equivalents		$ 8
Accounts receivable, net		295
Prepaid expenses		39
Other current assets		2
Total current assets		344
Intangible assets, net		1,308
Operating right-of-use assets, net		74
Goodwill		1,354
Property and equipment, net		46
Other assets		54
Total non-current assets		2,836
Total assets		3,180
Liabilities:
Accounts payable		79
Accrued payroll and related costs		13
Current operating lease liabilities		27
Accrued expenses and other current liabilities		36
Deferred revenue and advance contract payments		20
Total current liabilities		175
Non-current deferred revenue		32
Long-term operating lease liabilities		48
Other long-term liabilities		2
Total long-term liabilities		82
Total liabilities		$ 257
USPS Separation | Discontinued Operations, Disposed of by Means Other than Sale, Spinoff
Assets:
Cash and cash equivalents				$ 95
Accounts receivable, net				458
Prepaid expenses				82
Other current assets				35
Total current assets				670
Intangible assets, net				870
Goodwill				2,029
Property and equipment, net				294
Other assets				169
Total non-current assets				3,362
Total assets				4,032
Liabilities:
Short-term debt and current maturities of long-term debt				161
Accounts payable				165
Accrued payroll and related costs				17
Accrued expenses and other current liabilities				358
Deferred revenue and advance contract payments				53
Income tax payable				18
Total current liabilities				772
Long-term debt, net of current maturities				1,320
Non-current deferred revenue				5
Non-current income tax liabilities and deferred tax liabilities				196
Other long-term liabilities				71
Total long-term liabilities				1,592
Total liabilities				$ 2,364

Divestitures - Income Statement

Divestitures - Income Statement (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total income from discontinued operations	$ 0	$ 0	$ 35
USPS Separation | Discontinued Operations, Disposed of by Means Other than Sale, Spinoff
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue			431
Costs of services			311
Selling, general and administrative			50
Depreciation and amortization			33
Restructuring costs			1
Interest expense			8
Other (income) expense, net			(25)
Total costs and expenses			378
Total income from discontinued operations, before income taxes			53
Income tax expense			18
Total income from discontinued operations			$ 35

Divestitures - Cash Flow (Detai

Divestitures - Cash Flow (Details) - USD ($) $ in Millions	May 31, 2018	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Depreciation		$ 754	$ 643	$ 820
Capital expenditures		(261)	(350)	(297)
Gain on dispositions		$ 2,004	$ 0	0
USPS Separation | Discontinued Operations, Disposed of by Means Other than Sale, Spinoff
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Depreciation				16
Amortization				17
Capital expenditures				0
Gain on dispositions	$ 0			$ 24

Assets Held for Sale - Narrativ

Assets Held for Sale - Narrative (Details) - Apr. 01, 2021 - HPS Business - Subsequent Event € in Millions, $ in Millions	EUR (€)	USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Transaction consideration	€ 462	$ 543
Consideration for future services to be provided	€ 10	$ 12

Assets Held for Sale - Schedule

Assets Held for Sale - Schedule of Assets and Liabilities Held for Sale (Details) - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Assets:
Total current assets	$ 160	$ 0
Total non-current assets	353	0
Liabilities:
Total current liabilities	118	0
Total long-term liabilities	20	$ 0
Discontinued Operations - Held for sale
Assets:
Cash and cash equivalents	63
Accounts receivable, net	81
Prepaid expenses	11
Other current assets	5
Total current assets	160
Intangible assets, net	117
Operating right-of-use assets, net	23
Goodwill	89
Deferred income taxes, net	43
Property and equipment, net	56
Other assets	25
Total non-current assets	353
Total assets	513
Liabilities:
Accounts payable	12
Accrued payroll and related costs	9
Current operating lease liabilities	19
Accrued expenses and other current liabilities	26
Deferred revenue and advance contract payments	52
Total current liabilities	118
Non-current deferred revenue	10
Long-term operating lease liabilities	4
Income tax liabilities and deferred tax liabilities	1
Other long term liabilities	5
Total long-term liabilities	20
Total liabilities	138
HPS Business | Discontinued Operations - Held for sale
Assets:
Cash and cash equivalents	28
Accounts receivable, net	64
Prepaid expenses	6
Other current assets	0
Total current assets	98
Intangible assets, net	101
Operating right-of-use assets, net	5
Goodwill	80
Deferred income taxes, net	43
Property and equipment, net	4
Other assets	16
Total non-current assets	249
Total assets	347
Liabilities:
Accounts payable	4
Accrued payroll and related costs	7
Current operating lease liabilities	2
Accrued expenses and other current liabilities	13
Deferred revenue and advance contract payments	46
Total current liabilities	72
Non-current deferred revenue	10
Long-term operating lease liabilities	3
Income tax liabilities and deferred tax liabilities	1
Other long term liabilities	3
Total long-term liabilities	17
Total liabilities	89
Other | Discontinued Operations - Held for sale
Assets:
Cash and cash equivalents	35
Accounts receivable, net	17
Prepaid expenses	5
Other current assets	5
Total current assets	62
Intangible assets, net	16
Operating right-of-use assets, net	18
Goodwill	9
Deferred income taxes, net	0
Property and equipment, net	52
Other assets	9
Total non-current assets	104
Total assets	166
Liabilities:
Accounts payable	8
Accrued payroll and related costs	2
Current operating lease liabilities	17
Accrued expenses and other current liabilities	13
Deferred revenue and advance contract payments	6
Total current liabilities	46
Non-current deferred revenue	0
Long-term operating lease liabilities	1
Income tax liabilities and deferred tax liabilities	0
Other long term liabilities	2
Total long-term liabilities	3
Total liabilities	$ 49

Earnings (Loss) Per Share - Sch

Earnings (Loss) Per Share - Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Net (loss) income attributable to DXC common shareholders:
From continuing operations	$ (149)	$ (5,369)	$ 1,222
From discontinued operations	0	0	35
Net (loss) income attributable to DXC common stockholders	$ (149)	$ (5,369)	$ 1,257
Common share information:
Weighted average common shares outstanding for basic EPS (in shares)	254,140	258,570	277,540
Dilutive effect of stock options and equity awards (in shares)	0	0	3,890
Weighted average common shares outstanding for diluted EPS (in shares)	254,140	258,570	281,430
Basic EPS:
Continuing operations (in dollars per share)	$ (0.59)	$ (20.76)	$ 4.40
Discontinued operations (in dollars per share)	0	0	0.13
Basic EPS (in dollars per share)	(0.59)	(20.76)	4.53
Diluted EPS:
Continuing operations (in dollars per share)	(0.59)	(20.76)	4.35
Discontinued operations (in dollars per share)	0	0	0.12
Diluted EPS (in dollars per share)	$ (0.59)	$ (20.76)	$ 4.47

Earnings (Loss) Per Share - Ant

Earnings (Loss) Per Share - Antidilutive Shares (Details) - shares	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	1,596,985	1,075,901	0
RSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	2,768,022	2,029,567	46,051
PSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	1,463,872	289,972	25,086

Receivables - Receivables, Net

Receivables - Receivables, Net of Allowance for Doubtful Accounts (Details) - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, net of allowance for doubtful accounts	$ 4,156	$ 4,392
Billed trade receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, net of allowance for doubtful accounts	2,009	2,094
Unbilled receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, net of allowance for doubtful accounts	1,214	1,419
Other receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, net of allowance for doubtful accounts	$ 933	$ 879

Receivables - Allowance for Dou

Receivables - Allowance for Doubtful Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 74	$ 60
Provisions for losses on accounts receivable	53	3
Other adjustments to allowance and write-off's	(40)	11
Ending balance	91	74
Impact of adoption of the Credit Loss Standard
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 4	0
Ending balance		$ 4

Receivables - Narrative (Detail

Receivables - Narrative (Details)	12 Months Ended
	Mar. 31, 2021USD ($)extension	Mar. 31, 2021EUR (€)extension	Sep. 30, 2020USD ($)	Jun. 30, 2020USD ($)	Mar. 31, 2020USD ($)	Mar. 31, 2019USD ($)
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Extension term	1 year
Purchasers
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Receivables facility, amount			$ 500,000,000	$ 600,000,000
Deferred purchase price for receivables	$ 0				$ 0	$ 574,000,000
Availability under receivable facility	350,000,000
Drawn amount	390,000,000
Liability for excess cash proceeds	$ 40,000,000
Number of extensions | extension	1	1
Gain (loss) on sale of receivables	$ 0
DE Purchasers
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Receivables facility, amount	175,000,000	€ 150,000,000			102,000,000
Deferred purchase price for receivables	0				$ 103,000,000	$ 0
Availability under receivable facility	117,000,000
Drawn amount	$ 114,000,000
Number of extensions | extension	1	1
Extension term	1 year
Gain (loss) on sale of receivables	$ 0
Receivable	$ 3,000,000

Receivables - Schedule of DPP (

Receivables - Schedule of DPP (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Purchasers
Transfer of Financial Assets Accounted for as Sales, Deferred Purchase Price [Roll Forward]
Beginning balance	$ 0	$ 574
Transfers of receivables		1,214
Collections		(1,265)
Change in funding availability		2
Facility amendments		(525)
Ending balance	0	0
DE Purchasers
Transfer of Financial Assets Accounted for as Sales, Deferred Purchase Price [Roll Forward]
Beginning balance	103	0
Transfers of receivables	417	996
Collections	(420)	(879)
Change in funding availability	2	(14)
Facility amendments	(102)	0
Ending balance	$ 0	$ 103

Leases - Narrative (Details)

Leases - Narrative (Details)	12 Months Ended
	Mar. 31, 2021
Lessee, Lease, Description [Line Items]
Extension term	10 years
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term	1 year
Termination term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term	12 years
Termination term	3 years

Leases - Components of Lease Ex

Leases - Components of Lease Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Leases [Abstract]
Operating lease cost	$ 616	$ 698
Short-term lease cost	53	49
Variable lease cost	56	46
Sublease income	(40)	(45)
Total operating costs	685	748
Finance lease cost:
Amortization of right-of-use assets	433	405
Interest on lease liabilities	45	65
Total finance lease cost	$ 478	$ 470

Leases - Supplemental Cash Flow

Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash paid for amounts included in the measurement of:
Operating cash flows from operating leases	$ 616	$ 698
Operating cash flows from finance leases	45	65
Financing cash flows from finance leases	$ 584	$ 576

Leases - Supplemental Balance S

Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Assets:
ROU operating lease assets	$ 1,366	$ 1,428
ROU finance lease assets, balance sheet location	Property and equipment, net of accumulated depreciation of $4,121 and $3,818	Property and equipment, net of accumulated depreciation of $4,121 and $3,818
ROU finance lease assets	$ 834	$ 1,220
Total	2,200	2,648
Current
Operating lease	$ 418	$ 482
Finance lease, balance sheet location	Short-term debt and current maturities of long-term debt	Short-term debt and current maturities of long-term debt
Finance lease	$ 398	$ 444
Total	816	926
Non-current
Operating lease	$ 1,038	$ 1,063
Finance lease, balance sheet location	us-gaap:LongTermDebtNoncurrent	us-gaap:LongTermDebtNoncurrent
Finance lease	$ 496	$ 602
Total	$ 1,534	$ 1,665
Weighted average remaining lease term:
Operating leases	4 years 10 months 24 days	4 years 9 months 18 days
Finance leases	2 years 7 months 6 days	2 years 8 months 12 days
Weighted average remaining discount rate:
Operating leases	3.80%	4.00%
Finance leases	3.60%	6.40%

Leases - Maturities of Lease Li

Leases - Maturities of Lease Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Finance Leases
2022	$ 418
2023	290
2024	152
2025	59
2026	14
Thereafter	0
Total lease payments	933
Less: imputed interest	39
Finance lease liabilities	894	$ 1,046
Real Estate
Operating Leases
2022	411
2023	335
2024	260
2025	190
2026	108
Thereafter	207
Total lease payments	1,511
Less: imputed interest	135
Total payments	1,376
Equipment
Operating Leases
2022	41
2023	23
2024	11
2025	5
2026	2
Thereafter	1
Total lease payments	83
Less: imputed interest	3
Total payments	$ 80

Fair Value - Fair Value Measure

Fair Value - Fair Value Measurements on a Recurring Basis (Details) - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Other Debt Securities
Liabilities:
Available-for-sale, cost basis	$ 57	$ 37
Available-for-sale, unrealized loss	(2)
Available-for-sale, unrealized gain		11
Recurring
Assets:
Money market funds and money market deposit accounts	12	156
Time deposits	78	595
Other debt securities	57	51
Deferred purchase price receivable		103
Total assets	147	905
Liabilities:
Contingent consideration	27	46
Total liabilities	27	46
Recurring | Level 1
Assets:
Money market funds and money market deposit accounts	12	156
Time deposits	78	595
Other debt securities	0	0
Deferred purchase price receivable		0
Total assets	90	751
Liabilities:
Contingent consideration	0	0
Total liabilities	0	0
Recurring | Level 2
Assets:
Money market funds and money market deposit accounts	0	0
Time deposits	0	0
Other debt securities	55	48
Deferred purchase price receivable		0
Total assets	55	48
Liabilities:
Contingent consideration	0	0
Total liabilities	0	0
Recurring | Level 2 | Other Income, Net
Liabilities:
Available-for-sale, unrealized gain	17
Recurring | Level 3
Assets:
Money market funds and money market deposit accounts	0	0
Time deposits	0	0
Other debt securities	2	3
Deferred purchase price receivable		103
Total assets	2	106
Liabilities:
Contingent consideration	27	46
Total liabilities	$ 27	$ 46

Fair Value - Financial Instrume

Fair Value - Financial Instruments (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, net of current maturities	$ 4,345	$ 8,672
Impairment of tangible assets	0	0
Impairment of intangible assets	0	0
Impairment of long-lived assets	0	0
Fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, net of current maturities	4,700	8,200
Carrying value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, net of current maturities	$ 4,400	$ 8,400

Derivative Instruments - Narrat

Derivative Instruments - Narrative (Details) $ in Millions	12 Months Ended
	Mar. 31, 2021USD ($)counterparty	Mar. 31, 2020USD ($)
Derivative [Line Items]
Number of counterparties | counterparty	5
Designated as Hedging Instrument
Derivative [Line Items]
Foreign currency cash flow hedge gain to be reclassified into earnings during next 12 months	$ 3
Pretax gain (loss) on derivatives designated for hedge accounting included other comprehensive income (loss)	19
Pretax gain (loss) on derivative instruments	(5)
Not Designated as Hedging Instrument | Foreign currency forward contracts
Derivative [Line Items]
Notional amount of derivative	2,100	$ 2,200
Cash Flow Hedges | Designated as Hedging Instrument | Foreign currency forward contracts
Derivative [Line Items]
Notional amount of derivative	546	455
Net Investment Hedging | Designated as Hedging Instrument | Foreign currency-denominated debt
Derivative [Line Items]
Notional amount of derivative	800	$ 1,900
Pretax gain (loss) on derivatives designated for hedge accounting included other comprehensive income (loss)	$ (93)

Derivative Instruments - Nondes

Derivative Instruments - Nondesignated Hedging (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Foreign currency forward contracts | Other expense (income), net
Derivative [Line Items]
Pretax gain (loss) on derivative instruments	$ 51	$ (37)	$ 16

Derivative Instruments - Fair V

Derivative Instruments - Fair Value (Details) - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivative asset, fair value	$ 9	$ 0
Derivative liability, fair value	5	20
Designated as Hedging Instrument | Other current assets | Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Derivative asset, fair value	9	0
Designated as Hedging Instrument | Accrued expenses and other current liabilities | Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Derivative liability, fair value	5	20
Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivative asset, fair value	3	16
Derivative liability, fair value	3	12
Not Designated as Hedging Instrument | Other current assets | Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Derivative asset, fair value	3	16
Not Designated as Hedging Instrument | Accrued expenses and other current liabilities | Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Derivative liability, fair value	$ 3	$ 12

Property and Equipment (Details

Property and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment — gross	$ 7,067	$ 7,365
Less: accumulated depreciation	4,121	3,818
Property and equipment, net	2,946	3,547
Depreciation	754	643	$ 820
Land, buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment — gross	2,228	2,233
Computers and related equipment
Property, Plant and Equipment [Line Items]
Property and equipment — gross	4,596	4,876
Furniture and other equipment
Property, Plant and Equipment [Line Items]
Property and equipment — gross	227	226
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment — gross	$ 16	$ 30

Intangible Assets - Summary of

Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 8,465	$ 10,078
Accumulated Amortization	4,422	4,347
Net Carrying Value	4,043	5,731
Software
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	4,014	4,048
Accumulated Amortization	2,733	2,614
Net Carrying Value	1,281	1,434
Customer related intangible assets
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	4,212	5,795
Accumulated Amortization	1,641	1,697
Net Carrying Value	2,571	4,098
Other intangible assets
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	239	235
Accumulated Amortization	48	36
Net Carrying Value	$ 191	$ 199

Intangible Assets - Components

Intangible Assets - Components of Amortization (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 1,216	$ 1,299	$ 1,148
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
2022	837
2023	755
2024	669
2025	554
2026	505
Other intangible assets
Finite-Lived Intangible Assets [Line Items]
Amortization expense	952	1,019	890
Transition and transformation contract costs
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 264	$ 280	$ 258

Goodwill - Schedule of Goodwill

Goodwill - Schedule of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Changes in the carrying amount of goodwill by segment [Roll Forward]
Goodwill, beginning balance	$ 2,017	$ 7,606
Acquisition related adjustments	15	1,358
Divestitures	(1,355)
Assets held for sale	(90)
Impairment Losses	0	(6,794)	$ 0
Foreign currency translation	54	(153)
Goodwill, gross	10,197	11,573
Accumulated impairment losses	(9,556)	(9,556)
Goodwill, ending balance	641	2,017	7,606
GBS
Changes in the carrying amount of goodwill by segment [Roll Forward]
Goodwill, beginning balance	2,017	4,599
Acquisition related adjustments	15	1,288
Divestitures	(1,355)
Assets held for sale	(90)
Impairment Losses		(3,789)
Foreign currency translation	54	(81)
Goodwill, gross	5,131	6,507
Accumulated impairment losses	(4,490)	(4,490)
Goodwill, ending balance	641	2,017	4,599
GIS
Changes in the carrying amount of goodwill by segment [Roll Forward]
Goodwill, beginning balance	0	3,007
Acquisition related adjustments	0	70
Divestitures	0
Assets held for sale	0
Impairment Losses		(3,005)
Foreign currency translation	0	(72)
Goodwill, gross	5,066	5,066
Accumulated impairment losses	(5,066)	(5,066)
Goodwill, ending balance	$ 0	$ 0	$ 3,007

Goodwill - Narrative (Details)

Goodwill - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Goodwill [Line Items]
Goodwill impairment losses	$ 0	$ 6,794	$ 0
GBS
Goodwill [Line Items]
Goodwill impairment losses		3,789
GIS
Goodwill [Line Items]
Goodwill impairment losses		$ 3,005

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019	Apr. 01, 2017
Income Tax Disclosure [Abstract]
Domestic entities	$ 975	$ (2,928)	$ 511
Entities outside the United States	(321)	(2,300)	1,004
Income (loss) from continuing operations, before taxes	654	(5,228)	1,515
Income Tax Contingency [Line Items]
Transition tax included in current provision (benefit)	(4)	(31)	(44)
Interest and penalties for uncertain tax positions included in current expenses	$ 2	$ 2	1
Hewlett Packard Enterprise Services
Income Tax Contingency [Line Items]
Tax indemnification receivable related to net uncertain tax positions				$ 34
Tax indemnification receivable related to other tax payables				70
Tax indemnification payable related to other tax receivables				$ 118
Discontinued Operations | USPS Separation
Income Tax Contingency [Line Items]
Tax indemnification receivable related to disposal			72
Tax indemnification payable related to disposal			$ 33

Income Taxes - Tax Expense (Ben

Income Taxes - Tax Expense (Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Current:
Federal	$ 730	$ 3	$ (50)
State	257	16	42
Foreign	216	167	218
Total Current	1,203	186	210
Deferred:
Federal	(221)	(125)	95
State	(51)	17	23
Foreign	(131)	52	(40)
Total Deferred	(403)	(56)	78
Total income tax expense	$ 800	$ 130	$ 288

Income Taxes - Effective Tax Ra

Income Taxes - Effective Tax Rate Reconciliation (Details)	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Statutory rate	21.00%	21.00%	21.00%
State income tax, net of federal tax	10.80%	1.40%	3.20%
Foreign tax rate differential	(198.40%)	11.90%	(18.40%)
Goodwill impairment	0.00%	(28.30%)	0.00%
Change in valuation allowances	239.30%	(12.10%)	16.90%
Income Tax and Foreign Tax Credits	(48.70%)	2.60%	(0.60%)
Arbitration Award	0.00%	3.60%	0.00%
Change in uncertain tax positions	17.20%	(1.10%)	(1.50%)
Withholding Taxes	10.30%	(0.90%)	3.50%
U.S. Tax on Foreign Income	17.60%	(0.40%)	2.40%
Excess tax benefits or expense for stock compensation	2.20%	(0.10%)	(1.10%)
Capitalized transaction costs	0.50%	(0.10%)	0.10%
United States Tax Reform	(0.007)	0.007	(0.034)
Change in Indefinite Reinvestment Assertion	0.00%	0.00%	(3.10%)
Impact of Business Divestitures	52.60%	0.00%	0.00%
Granite Trust Capital Loss	(5.70%)	0.00%	0.00%
Other items, net	4.30%	(0.70%)	0.00%
Effective tax rate	122.30%	(2.50%)	19.00%

Income Taxes - Effective Tax _2

Income Taxes - Effective Tax Rate Reconciliation, Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Income Tax Rate Reconciliation [Line Items]
Effective income tax rate reconciliation, divestiture of business, amount	$ 344
Effective income tax rate reconciliation, divestiture of business, percent	52.60%	0.00%	0.00%
Effective income tax rate reconciliation, change in deferred tax assets valuation allowance, amount	$ 1,565	$ 631	$ 256
Effective income tax rate reconciliation, change in deferred tax assets valuation allowance, percent	239.30%	(12.10%)	16.90%
Effective income tax rate reconciliation, change in tax credits, amount	$ 319	$ 135
Effective income tax rate reconciliation, decrease from tax credits, percent	48.70%	(2.60%)	0.60%
Effective income tax rate reconciliation, uncertain tax positions, amount	$ 112
Effective income tax rate reconciliation, uncertain tax positions, percent	17.20%	(1.10%)	(1.50%)
Effective income tax rate reconciliation, goodwill impairment charge, amount		$ 1,482
Effective income tax rate reconciliation, goodwill impairment charge, percent	0.00%	(28.30%)	0.00%
Effective income tax rate reconciliation, non-taxable gain on arbitration award, amount		$ 186
Effective income tax rate reconciliation, non-taxable gain on arbitration award, percent	0.00%	(3.60%)	0.00%
Effective income tax rate reconciliation, change in deferred revenue accounting method, amount			$ 66
Effective income tax rate reconciliation, change in deferred revenue accounting method, percent			4.30%
Luxembourg
Income Tax Rate Reconciliation [Line Items]
Effective income tax rate reconciliation, gain (loss) on investments, amount	$ (1,226)	$ (637)	$ 360
Effective income tax rate reconciliation, gain (loss) on investments, percent	(187.50%)	(12.20%)	23.70%

Income Taxes - Deferred Tax Ass

Income Taxes - Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Deferred tax assets
Investment basis differences	$ 32	$ 0
Tax loss/credit carryforwards	4,039	2,516
Accrued interest	20	12
Operating lease liabilities	359	370
Contract accounting	92	126
Other assets	351	144
Total deferred tax assets	4,893	3,168
Valuation allowance	(3,860)	(2,162)
Net deferred tax assets	1,033	1,006
Deferred tax liabilities
Depreciation and amortization	(513)	(850)
Operating right-of-use asset	(339)	(343)
Investment basis differences	0	(68)
Employee benefits	(6)	(48)
Other liabilities	(246)	(150)
Total deferred tax liabilities	(1,104)	(1,459)
Total net deferred tax assets (liabilities)	$ (71)	$ (453)

Income Taxes - Income Tax Relat

Income Taxes - Income Tax Related Assets And Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Current assets:
Income tax receivables and prepaid taxes	$ 67	$ 58
Non-current:
Income taxes receivable and prepaid taxes	136	180
Deferred tax assets	289	265
Deferred tax assets, noncurrent	425	445
Deferred tax assets, total	492	503
Current liabilities:
Liability for uncertain tax positions	(30)	(12)
Income taxes payable	(368)	(75)
Deferred tax liabilities, current	(398)	(87)
Non-current:
Deferred taxes	(360)	(718)
Income taxes payable	(130)	(168)
Liability for uncertain tax positions	(364)	(271)
Deferred tax liabilities, noncurrent	(854)	(1,157)
Deferred tax liabilities, total	(1,252)	(1,244)
Income Tax Rate Reconciliation [Line Items]
Valuation allowance	3,860	$ 2,162
Net increase (decrease) in deferred tax asset valuation allowance	1,698
Net increase in deferred tax asset valuation allowance for goodwill impairment	1,565
Net decrease in deferred tax asset valuation allowance for releases	4
Net change in deferred tax asset valuation allowance for currency translation	129
Foreign
Income Tax Rate Reconciliation [Line Items]
Valuation allowance	$ 175

Income Taxes - Operating Loss a

Income Taxes - Operating Loss and Tax Credit Carryforwards (Details) - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Federal
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 132	$ 15
Net operating loss carryforward with no expiration	128	3
Net operating loss carryforward with expiration	4	12
Tax credit carryforwards	5	9
Tax credit carryforwards with no expiration	0	0
Tax credit carryforwards with expiration	5	9
Capital loss carryforwards	0	0
Capital loss carryforwards with no expiration	0	0
Capital loss carryforwards with expiration	0	0
State
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	369	673
Net operating loss carryforward with no expiration	6	6
Net operating loss carryforward with expiration	363	667
Tax credit carryforwards	0	16
Tax credit carryforwards with no expiration	0	7
Tax credit carryforwards with expiration	0	9
Capital loss carryforwards	0	0
Capital loss carryforwards with no expiration	0	0
Capital loss carryforwards with expiration	0	0
Foreign
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	16,700	10,512
Net operating loss carryforward with no expiration	6,191	6,471
Net operating loss carryforward with expiration	10,509	4,041
Tax credit carryforwards	0	16
Tax credit carryforwards with no expiration	0	0
Tax credit carryforwards with expiration	0	16
Capital loss carryforwards	45	59
Capital loss carryforwards with no expiration	45	40
Capital loss carryforwards with expiration	$ 0	$ 19

Income Taxes - Income Tax Conti

Income Taxes - Income Tax Contingency (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Income Tax Contingency [Line Items]
Other foreign earnings not indefinitely reinvested				$ 522
Distribution of accumulated foreign earnings	$ 550
Liability For Uncertain Tax Positions [Abstract]
Tax	253	$ 165	$ 219	354	$ 253	$ 165
Interest				46	45	41
Penalties				22	21	25
Offset to receivable				(18)	(24)
Net of tax attributes				(10)	(12)
Total				394	283
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of fiscal year	253	165	219
Gross increases related to prior year tax positions	60	74	4
Gross decreases related to prior year tax positions	(30)	(9)	(27)
Gross increases related to current year tax positions	102	15	0
Settlements and statute of limitation expirations	(36)	(7)	(23)
Acquisitions	6	18	0
Foreign exchange and others	(1)	(3)	(8)
Balance at end of fiscal year	354	253	165
Liability for uncertain tax positions that if recognized would affect the effective tax rate				316	210	138
Interest Accrued Related to Uncertain Tax Positions and Penalties [Abstract]
Unrecognized Tax Benefits, Interest on Income Taxes Expense	1	5	2
Unrecognized Tax Benefits Interest On Income Taxes Expense Net Of Tax	(1)	3	1
Unrecognized Tax Benefits, Income Tax Penalties Expense	1	$ (3)	$ (1)
Unrecognized Tax Benefits, Interest on Income Taxes Accrued				46	45	41
Unrecognized Tax Benefits Interest On Income Taxes Accrued Net Of Tax				39	40	36
Unrecognized Tax Benefits, Income Tax Penalties Accrued				22	$ 21	$ 25
Potential federal and state cost from tax examinations	$ 405
Settlement with Taxing Authority
Interest Accrued Related to Uncertain Tax Positions and Penalties [Abstract]
Reasonably possible reduction in liability for uncertain tax positions in next twelve months				$ 52

Debt - Schedule of Debt (Detail

Debt - Schedule of Debt (Details)	12 Months Ended
	Mar. 31, 2021USD ($)	Mar. 31, 2021EUR (€)	Mar. 31, 2021GBP (£)	Mar. 16, 2021	Jun. 30, 2020USD ($)	Mar. 31, 2020USD ($)
Short-term debt and current maturities of long-term debt
Commercial paper	$ 213,000,000					$ 542,000,000
Current maturities of long-term debt	556,000,000					290,000,000
Current maturities of finance lease liabilities	398,000,000					444,000,000
Short-term debt and current maturities of long-term debt	1,167,000,000					1,276,000,000
Long-term debt, net of current maturities
Finance lease liabilities	894,000,000					1,046,000,000
Long-term debt	5,299,000,000					9,406,000,000
Less: current maturities	954,000,000					734,000,000
Long-term debt, net of current maturities	4,345,000,000					8,672,000,000
Borrowings for assets acquired under long-term financing
Long-term debt, net of current maturities
Long-term debt, net of current maturities	672,000,000					802,000,000
Mandatorily redeemable preferred stock outstanding
Long-term debt, net of current maturities
Long-term debt, net of current maturities	$ 63,000,000					62,000,000
Debt Information [Abstract]
Effective interest rate	6.00%	6.00%	6.00%
Other borrowings
Long-term debt, net of current maturities
Long-term debt, net of current maturities	$ 5,000,000					70,000,000
Minimum | Finance lease liabilities
Debt Information [Abstract]
Effective interest rate	0.59%	0.59%	0.59%
Minimum | Borrowings for assets acquired under long-term financing
Debt Information [Abstract]
Effective interest rate	0.00%	0.00%	0.00%
Maximum | Finance lease liabilities
Debt Information [Abstract]
Effective interest rate	19.79%	19.79%	19.79%
Maximum | Borrowings for assets acquired under long-term financing
Debt Information [Abstract]
Effective interest rate	6.39%	6.39%	6.39%
Revolving credit facility | Line of credit
Long-term debt, net of current maturities
Long-term debt, net of current maturities	$ 0					1,500,000,000
Debt Information [Abstract]
Amount of multi-year committed revolving credit facility					$ 4,000,000,000
Revolving credit facility | Minimum | Line of credit
Debt Information [Abstract]
Effective interest rate	1.26%	1.26%	1.26%
Revolving credit facility | Maximum | Line of credit
Debt Information [Abstract]
Effective interest rate	2.08%	2.08%	2.08%
Term Loan Payable, AUD, Due 2022 | Loans payable
Long-term debt, net of current maturities
Long-term debt, net of current maturities	$ 0					489,000,000
Term Loan Payable, AUD, Due 2022 | Minimum | Loans payable
Debt Information [Abstract]
Effective interest rate	0.94%	0.94%	0.94%
Term Loan Payable, AUD, Due 2022 | Maximum | Loans payable
Debt Information [Abstract]
Effective interest rate	0.96%	0.96%	0.96%
Term Loan Payable, GBP, Due 2022 | Loans payable
Long-term debt, net of current maturities
Long-term debt, net of current maturities	$ 0					556,000,000
Term Loan Payable, GBP, Due 2022 | Minimum | Loans payable
Debt Information [Abstract]
Effective interest rate	0.88%	0.88%	0.88%
Term Loan Payable, GBP, Due 2022 | Maximum | Loans payable
Debt Information [Abstract]
Effective interest rate	1.46%	1.46%	1.46%
Term Loan Payable, EUR, Due 2022-2023 | Loans payable
Long-term debt, net of current maturities
Long-term debt, net of current maturities	$ 0					822,000,000
Debt Information [Abstract]
Effective interest rate	0.65%	0.65%	0.65%
Term Loan Payable, EUR, Due 2023-2024 | Loans payable
Long-term debt, net of current maturities
Long-term debt, net of current maturities	$ 469,000,000					821,000,000
Debt Information [Abstract]
Effective interest rate	0.80%	0.80%	0.80%
Term Loan Payable, EUR, Due 2023-2024 | EURIBOR | Minimum | Loans payable
Debt Information [Abstract]
Basis spread on variable rate	0.55%
Term Loan Payable, EUR, Due 2023-2024 | EURIBOR | Maximum | Loans payable
Debt Information [Abstract]
Basis spread on variable rate	1.05%
Term Loan Payable, USD, Due 2025 | Loans payable
Long-term debt, net of current maturities
Long-term debt, net of current maturities	$ 0					480,000,000
Term Loan Payable, USD, Due 2025 | Minimum | Loans payable
Debt Information [Abstract]
Effective interest rate	1.40%	1.40%	1.40%
Term Loan Payable, USD, Due 2025 | Maximum | Loans payable
Debt Information [Abstract]
Effective interest rate	2.24%	2.24%	2.24%
Senior Notes Due 2023 | Senior notes
Long-term debt, net of current maturities
Long-term debt, net of current maturities	$ 154,000,000					276,000,000
Debt Information [Abstract]
Effective interest rate	4.45%	4.45%	4.45%	4.45%
Face amount	$ 274,000,000
Senior Notes, Due 2023 | Senior notes
Long-term debt, net of current maturities
Long-term debt, net of current maturities	$ 165,000,000					172,000,000
Debt Information [Abstract]
Effective interest rate	4.45%	4.45%	4.45%	4.45%
Face amount	$ 171,000,000
Senior Notes Due 2025 | Senior notes
Long-term debt, net of current maturities
Long-term debt, net of current maturities	$ 504,000,000					505,000,000
Debt Information [Abstract]
Effective interest rate	4.25%	4.25%	4.25%
Face amount	$ 500,000,000
Senior Notes, Due 2026 | Senior notes
Long-term debt, net of current maturities
Long-term debt, net of current maturities	$ 496,000,000					0
Debt Information [Abstract]
Effective interest rate	4.13%	4.13%	4.13%		4.13%
Face amount	$ 500,000,000				$ 500,000,000
Senior Notes Due 2025 | Senior notes
Long-term debt, net of current maturities
Long-term debt, net of current maturities	$ 343,000,000					307,000,000
Debt Information [Abstract]
Effective interest rate	2.75%	2.75%	2.75%
Face amount | £			£ 250,000,000
Senior Notes Due 2026 | Senior notes
Long-term debt, net of current maturities
Long-term debt, net of current maturities	$ 760,000,000					709,000,000
Debt Information [Abstract]
Effective interest rate	1.75%	1.75%	1.75%
Face amount | €		€ 650,000,000
Senior Notes Due 2028 | Senior notes
Long-term debt, net of current maturities
Long-term debt, net of current maturities	$ 506,000,000					507,000,000
Debt Information [Abstract]
Effective interest rate	4.75%	4.75%	4.75%
Face amount	$ 500,000,000
Senior Notes Due 2030 | Senior notes
Long-term debt, net of current maturities
Long-term debt, net of current maturities	$ 268,000,000					271,000,000
Debt Information [Abstract]
Effective interest rate	7.45%	7.45%	7.45%
Face amount	$ 234,000,000
Lease Credit Facility Due 2022-2023 | Secured debt
Long-term debt, net of current maturities
Long-term debt, net of current maturities	$ 0					$ 11,000,000
Lease Credit Facility Due 2022-2023 | Minimum | Secured debt
Debt Information [Abstract]
Effective interest rate	1.15%	1.15%	1.15%
Lease Credit Facility Due 2022-2023 | Maximum | Secured debt
Debt Information [Abstract]
Effective interest rate	1.99%	1.99%	1.99%
Commercial paper
Debt Information [Abstract]
Amount of multi-year committed revolving credit facility | €		€ 1,000,000,000
Commercial paper | Minimum
Debt Information [Abstract]
Weighted average interest rate	(0.39%)	(0.39%)	(0.39%)
Commercial paper | Maximum
Debt Information [Abstract]
Weighted average interest rate	0.44%	0.44%	0.44%
Current maturities of finance lease liabilities | Minimum
Debt Information [Abstract]
Effective interest rate	0.59%	0.59%	0.59%
Current maturities of finance lease liabilities | Maximum
Debt Information [Abstract]
Effective interest rate	19.79%	19.79%	19.79%

Debt - Narrative (Details)

Debt - Narrative (Details) $ in Millions	Mar. 16, 2021USD ($)	Oct. 31, 2020USD ($)	Oct. 31, 2020GBP (£)	Oct. 31, 2020EUR (€)	Oct. 31, 2020AUD ($)	Mar. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Sep. 30, 2020GBP (£)	Jun. 30, 2020USD ($)	Jun. 30, 2020GBP (£)	Jun. 30, 2020EUR (€)	Jun. 30, 2020AUD ($)	Dec. 31, 2020USD ($)	Mar. 31, 2021USD ($)	Mar. 31, 2020USD ($)	Mar. 31, 2019USD ($)	Mar. 31, 2021GBP (£)	Mar. 31, 2021EUR (€)
Debt Instrument [Line Items]
Repayments of debt		$ 3,500,000,000												$ 3,552,000,000	$ 1,039,000,000	$ 2,625,000,000
Commercial paper
Debt Instrument [Line Items]
Repayments of debt		772,000,000	£ 600,000,000
Maximum borrowing capacity | €																		€ 1,000,000,000
Loans payable
Debt Instrument [Line Items]
Repayments of debt							$ 1,441,000,000
Revolving credit facility | Line of credit
Debt Instrument [Line Items]
Repayments of debt		1,250,000,000											$ 4,000,000,000
Proceeds from debt issuance									$ 2,500,000,000
Maximum borrowing capacity									4,000,000,000
Senior Notes Due 2024 and 2026 | Senior notes
Debt Instrument [Line Items]
Face amount									1,000,000,000
Senior Notes Due 2025 | Senior notes
Debt Instrument [Line Items]
Face amount | £																	£ 250,000,000
Effective interest rate						2.75%								2.75%			2.75%	2.75%
Senior Notes, Due 2024 | Senior notes
Debt Instrument [Line Items]
Face amount									$ 500,000,000
Effective interest rate									4.00%
Repayments of debt						$ 500,000,000
Senior Notes, Due 2026 | Senior notes
Debt Instrument [Line Items]
Face amount						$ 500,000,000			$ 500,000,000					$ 500,000,000
Effective interest rate						4.13%			4.13%					4.13%			4.13%	4.13%
Term Loan Payable, EUR, Due 2023 | Loans payable
Debt Instrument [Line Items]
Repayments of debt | €											€ 500,000,000
Term Loan Payable, GBP, Due 2022 | Loans payable
Debt Instrument [Line Items]
Repayments of debt | £								£ 300,000,000		£ 150,000,000
Term Loan Payable, AUD, Due 2022 | Loans payable
Debt Instrument [Line Items]
Repayments of debt		358,000,000			$ 500							$ 300
Term Loan Payable, USD, Due 2025 | Loans payable
Debt Instrument [Line Items]
Repayments of debt		381,000,000							$ 100,000,000
Senior Notes, Due 2026 | Senior notes
Debt Instrument [Line Items]
Face amount | €																		€ 650,000,000
Senior Notes Due 2023 | Senior notes
Debt Instrument [Line Items]
Face amount						$ 274,000,000								$ 274,000,000
Effective interest rate	4.45%					4.45%								4.45%			4.45%	4.45%
Repayments of debt	$ 121,000,000
Senior Notes, Due 2023 | Senior notes
Debt Instrument [Line Items]
Face amount						$ 171,000,000								$ 171,000,000
Effective interest rate	4.45%					4.45%								4.45%			4.45%	4.45%
Repayments of debt	$ 6,000,000
Term Loan Payable, EUR, Due 2024 | Loans payable
Debt Instrument [Line Items]
Repayments of debt		410,000,000		€ 350,000,000
Term Loan Payable, EUR, Due 2022-2023 | Loans payable
Debt Instrument [Line Items]
Effective interest rate						0.65%								0.65%			0.65%	0.65%
Repayments of debt		$ 292,000,000		€ 250,000,000

Debt - Maturities of Long-Term

Debt - Maturities of Long-Term Debt (Details) $ in Millions	Mar. 31, 2021USD ($)
Long-term Debt, Fiscal Year Maturity [Abstract]
2022	$ 555
2023	304
2024	615
2025	898
2026	1,278
Thereafter	756
Total	$ 4,406

Pension and Other Benefit Pla_3

Pension and Other Benefit Plans - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019	Oct. 26, 2018
Defined Benefit Plan Disclosure [Line Items]
Measurement period used to calculate long-term rate of return on assets	30 years
Prior service cost				$ 28
Vesting period	1 year
Defined contribution plan contribution	$ 221	$ 192	$ 219
Shares of company common stock held in defined contribution plan assets (in shares)	3,046,140
Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Contractual termination benefits	$ 13	10	3
Estimated future amortization of prior service credit	$ 9
Non-employee directors
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation plan, maximum deferral percentage	100.00%
Deferred compensation plan, liability	$ 42	48
Deferred compensation plan, expense	$ 8	$ 0	$ 2

Pension and Other Benefit Pla_4

Pension and Other Benefit Plans - Pension Plan, Reconciliation of Changes in PBO and Fair Value of Plan Assets (Details) - Pension Plans, Defined Benefit - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation at beginning of year	$ 10,150	$ 11,016
Service cost	91	92	$ 88
Interest cost	245	237	253
Plan participants’ contributions	31	30
Amendments	(9)	0
Business/contract acquisitions/divestitures	11	12
Contractual termination benefits	13	10
Settlement/curtailment	(37)	(60)
Actuarial loss (gain)	1,262	(362)
Benefits paid	(393)	(359)
Foreign currency exchange rate changes	1,084	(457)
Other	(12)	(9)
Projected benefit obligation at end of year	$ 12,436	$ 10,150	11,016
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate	2.00%	2.40%
Rates of increase in compensation levels	2.50%	1.60%
Interest Crediting Rate	4.00%
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	$ 11,090	$ 11,343
Actual return on plan assets	1,401	526
Employer contribution	117	108
Plan participants’ contributions	31	30
Benefits paid	(393)	(359)
Business/contract acquisitions/divestitures	0	7
Contractual termination benefits	7	15
Plan settlement	(31)	(63)
Foreign currency exchange rate changes	1,224	(507)
Other	(21)	(10)
Fair value of plan assets at end of year	13,425	11,090	$ 11,343
Funded status at end of year	$ 989	$ 940

Pension and Other Benefit Pla_5

Pension and Other Benefit Plans - Pension Plan, Amounts Recognized in Balance Sheet (Details) - Pension Plans, Defined Benefit - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Other assets	$ 1,884	$ 1,735
Accrued expenses and other current liabilities	(81)	(16)
Non-current pension obligations	(796)	(761)
Other long-term liabilities - OPEB	(18)	(18)
Net amount recorded	989	940
Accumulated benefit obligation	$ 12,346	$ 10,072

Pension and Other Benefit Pla_6

Pension and Other Benefit Plans - Pension Plan, Assumptions and Other Selected Information (Details) - Pension Plans, Defined Benefit - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Benefit Plans with Projected Benefit Obligation in Excess of Plan Assets
Projected benefit obligation	$ 2,490	$ 2,191
Accumulated benefit obligation	2,431	2,131
Fair value of plan assets	1,596	1,397
Benefit Plans with Accumulated Benefit Obligation in Excess of Plan Assets
Projected benefit obligation	2,453	2,159
Accumulated benefit obligation	2,402	2,108
Fair value of plan assets	$ 1,562	$ 1,369

Pension and Other Benefit Pla_7

Pension and Other Benefit Plans - Pension Plan, Net Periodic Costs and Other Changes (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Settlement/curtailment (gain) loss	$ 519	$ (244)	$ 143
Pension Plans, Defined Benefit
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	91	92	88
Interest cost	245	237	253
Expected return on assets	(659)	(651)	(570)
Amortization of transition obligation	0	0	0
Amortization of prior service costs	(8)	(9)	(15)
Contractual termination benefits	13	10	3
Settlement/curtailment (gain) loss	(18)	7	(10)
Recognition of actuarial loss (gain)	537	(252)	153
Net periodic pension expense (income)	$ 201	$ (566)	$ (98)
Defined Benefit Plan, Assumptions Used in Calculations [Abstract]
Discount or settlement rates	2.40%	2.40%	2.50%
Expected long-term rates of return on assets	5.60%	5.80%	5.30%
Rates of increase in compensation levels	1.70%	2.00%	2.10%
Employer contributions:
2022	$ 155
Benefit Payments:
2022	506
2023	443
2024	444
2025	452
2026	462
2026 and thereafter	2,454
Total	$ 4,761

Pension and Other Benefit Pla_8

Pension and Other Benefit Plans - Amounts Recognized in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Prior service cost	$ (239)	$ (247)

Pension and Other Benefit Pla_9

Pension and Other Benefit Plans - Fair Value by Investment Category and Level Within Fair Value Hierarchy (Details) - Pension Plans, Defined Benefit - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 13,425	$ 11,090	$ 11,343
Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	419	669
Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	10,975	9,063
Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,031	1,358	$ 1,032
US Domestic Stocks
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	3
US Domestic Stocks | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
US Domestic Stocks | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	3
US Domestic Stocks | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Global Stocks
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	3
Global Stocks | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Global Stocks | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	3
Global Stocks | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Global/International Equity commingled funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,506	2,078
Global/International Equity commingled funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	246	315
Global/International Equity commingled funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,260	1,763
Global/International Equity commingled funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Global equity mutual funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	8
Global equity mutual funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	8
Global equity mutual funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Global equity mutual funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
U.S./North American Equity commingled funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6	5
U.S./North American Equity commingled funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	1
U.S./North American Equity commingled funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6	4
U.S./North American Equity commingled funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Non-U.S. Government funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	136
Non-U.S. Government funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	136
Non-U.S. Government funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Non-U.S. Government funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fixed income commingled funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	58	126
Fixed income commingled funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1	55
Fixed income commingled funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	42	71
Fixed income commingled funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	15	0
Fixed income mutual funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4	3
Fixed income mutual funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	3
Fixed income mutual funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4	0
Fixed income mutual funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5,500	4,808
Corporate bonds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	1
Corporate bonds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5,500	4,807
Corporate bonds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Alternatives
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4,637	3,335
Other Alternatives | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1	0
Other Alternatives | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,706	2,038
Other Alternatives | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,930	1,297
Hedge Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	11	11
Hedge Funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	2
Hedge Funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	10	7
Hedge Funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1	2
Other Assets
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	220	375
Other Assets | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	70	87
Other Assets | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	65	229
Other Assets | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	85	59
Insurance contracts
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	384	136
Insurance contracts | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4	0
Insurance contracts | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	380	136
Insurance contracts | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	99	63
Cash and cash equivalents | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	97	61
Cash and cash equivalents | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2	2
Cash and cash equivalents | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 0	$ 0

Pension and Other Benefit Pl_10

Pension and Other Benefit Plans - Reconciliation of Assets Valued Using Significant Unobservable Inputs (Details) - Pension Plans, Defined Benefit - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of plan assets at beginning of year	$ 11,090	$ 11,343
Changes due to exchange rates	(1,084)	457
Fair value of plan assets at end of year	13,425	11,090
Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of plan assets at beginning of year	1,358	1,032
Actual return on plan assets held at the reporting date	233	83
Purchases, sales and settlements	279	282
Transfers in and / or out of Level 3	0	8
Changes due to exchange rates	161	(47)
Fair value of plan assets at end of year	$ 2,031	$ 1,358

Pension and Other Benefit Pl_11

Pension and Other Benefit Plans - Asset Allocations (Details) - Pension Plans, Defined Benefit	Mar. 31, 2021	Mar. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Percent of plan assets	100.00%	100.00%
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Percent of plan assets	19.00%	19.00%
Debt securities
Defined Benefit Plan Disclosure [Line Items]
Percent of plan assets	42.00%	46.00%
Alternatives
Defined Benefit Plan Disclosure [Line Items]
Percent of plan assets	37.00%	31.00%
Cash and other
Defined Benefit Plan Disclosure [Line Items]
Percent of plan assets	2.00%	4.00%

Stockholders' Equity - Narrativ

Stockholders' Equity - Narrative (Details)	12 Months Ended
	Mar. 31, 2021vote$ / sharesshares	Mar. 31, 2020$ / sharesshares	Mar. 31, 2019shares	Nov. 08, 2018USD ($)	Apr. 03, 2017shares
Equity, Class of Treasury Stock [Line Items]
Common stock, authorized (in shares)	750,000,000	750,000,000
Common stock, par value (in dollars per share) | $ / shares	$ 0.01	$ 0.01
Preferred stock, authorized (in shares)	1,000,000	1,000,000
Preferred stock, par value (in dollars per share) | $ / shares	$ 0.01	$ 0.01
Number of votes per common share | vote	1
Stock repurchase program, shares authorized					2,000,000,000
Stock repurchase program, increase (decrease) in authorized shares | $				$ 2,000,000,000
Treasury Stock Transactions [Abstract]
Common stock in treasury, at cost (in shares)	2,458,027	2,148,708	1,788,658
Common Stock | Shares Repurchased From Employees Related To Stock Option Plans
Treasury Stock Transactions [Abstract]
Accepted common stock in lieu of cash in connection with exercise of stock options (in shares)	4,050	38,902	42,008
Accepted common stock in lieu of cash in connection with the tax withholdings associated with the vesting and release of common stock (in shares)	305,269	321,148	729,703

Stockholders' Equity - Share Re

Stockholders' Equity - Share Repurchases (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Equity, Class of Treasury Stock [Line Items]
Number of shares repurchased (in shares)	15,933,651	19,342,586
Average price per share (in dollars per share)	$ 46.21	$ 69.20
Share repurchase amount	$ 736	$ 1,339
Open market purchases
Equity, Class of Treasury Stock [Line Items]
Number of shares repurchased (in shares)	12,279,107	19,342,586
Average price per share (in dollars per share)	$ 43.67	$ 69.20
Share repurchase amount	$ 536	$ 1,339
ASR
Equity, Class of Treasury Stock [Line Items]
Number of shares repurchased (in shares)	3,654,544
Average price per share (in dollars per share)	$ 54.73
Share repurchase amount	$ 200

Stockholders' Equity - Dividend

Stockholders' Equity - Dividends (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2021
Equity [Abstract]
Dividends Declared Per Common Share (in dollars per share)	$ 0.84	$ 0.76
Dividends Declared, Total	$ 219	$ 209
Dividends Declared, Unpaid at Fiscal Year End	$ 55	$ 53	$ 0

Stockholders' Equity - Accumula

Stockholders' Equity - Accumulated Other Comprehensive Income (Loss) - Rollforward (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
AOCI Including Portion Attributable to Noncontrolling Interest [Abstract]
Beginning balance	$ 5,129	$ 11,725	$ 13,837
Current-period other comprehensive income (loss)	302	(349)	(299)
Amounts reclassified from accumulated other comprehensive income (loss), net of taxes	(1)	(10)	(3)
Ending balance	5,308	5,129	11,725
Foreign Currency Translation Adjustments
AOCI Including Portion Attributable to Noncontrolling Interest [Abstract]
Beginning balance	(851)	(517)	(261)
Current-period other comprehensive income (loss)	297	(334)	(256)
Amounts reclassified from accumulated other comprehensive income (loss), net of taxes	0	0	0
Ending balance	(554)	(851)	(517)
Cash Flow Hedges
AOCI Including Portion Attributable to Noncontrolling Interest [Abstract]
Beginning balance	(20)	(3)	9
Current-period other comprehensive income (loss)	14	(15)	(22)
Amounts reclassified from accumulated other comprehensive income (loss), net of taxes	5	(2)	10
Ending balance	(1)	(20)	(3)
Available-for-sale Securities
AOCI Including Portion Attributable to Noncontrolling Interest [Abstract]
Beginning balance	9	9	9
Current-period other comprehensive income (loss)	(9)	0	0
Amounts reclassified from accumulated other comprehensive income (loss), net of taxes	0	0	0
Ending balance	0	9	9
Pension and Other Post-retirement Benefit Plans
AOCI Including Portion Attributable to Noncontrolling Interest [Abstract]
Beginning balance	259	267	301
Current-period other comprehensive income (loss)	0	0	(21)
Amounts reclassified from accumulated other comprehensive income (loss), net of taxes	(6)	(8)	(13)
Ending balance	253	259	267
Accumulated Other Comprehensive Income (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest [Abstract]
Beginning balance	(603)	(244)	58
Ending balance	$ (302)	$ (603)	$ (244)

Stock Incentive Plans - Narrati

Stock Incentive Plans - Narrative (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Mar. 31, 2021USD ($)anniversary$ / sharesshares	Mar. 31, 2020USD ($)$ / shares	Mar. 31, 2019USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Plan term (in years)	10 years
Common stock, par value (in dollars per share) | $ / shares	$ 0.01	$ 0.01
Cash received from stock awards exercised during the period | $	$ 1	$ 9	$ 34
Number of common shares available for grant at period end (in shares)	33,449,396
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of options (in years)	10 years
Stock Options | 33.33% vested in year 1
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage	33.33%
Stock Options | 33.33% vested in year 2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage	33.33%
Stock Options | 33.33% vested in year 3
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage	33.33%
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares received per RSU (in shares)	1
Number of anniversaries following the executive's termination that the shares are redeemable | anniversary	10
Total unrecognized compensation expense related to unvested awards, net of expected forfeitures | $	$ 135
Weighted average period over which cost is expected to be recognized (in years)	1 year 11 months 15 days
RSUs | Five Year Anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual installments (in years)	5 years
RSUs | Ten Year Anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual installments (in years)	10 years
RSUs | Fifteen Year Anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual installments (in years)	15 years
Performance-based Restricted Stock Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	3 years
Award vesting rights, percentage	25.00%
Performance period (in years)	3 years
DXC Share Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common shares available for grant at period end (in shares)	155,308
DXC Share Purchase Plan | Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares purchased under plan (in shares)	51,302

Stock Incentive Plans - Schedul

Stock Incentive Plans - Schedule of Share Based Compensation Shares Authorized (Details)	Mar. 31, 2021shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reserved for issuance (in shares)	52,195,000
Available for future grant (in shares)	33,449,396
DXC Employee Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reserved for issuance (in shares)	51,200,000
Available for future grant (in shares)	32,858,137
DXC Director Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reserved for issuance (in shares)	745,000
Available for future grant (in shares)	435,951
DXC Share Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reserved for issuance (in shares)	250,000
Available for future grant (in shares)	155,308

Stock Incentive Plans - Sched_2

Stock Incentive Plans - Schedule of Stock-Based Compensation (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Share-based Payment Arrangement [Abstract]
Total share-based compensation cost	$ 56	$ 68	$ 74
Related income tax benefit	6	12	15
Total intrinsic value of options exercised	1	8	44
Tax benefits from exercised stock options and awards	$ 6	$ 14	$ 39

Stock Incentive Plans - Sched_3

Stock Incentive Plans - Schedule of Options (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Additional Disclosures
Aggregate intrinsic value of options exercised	$ 1	$ 8	$ 44
Stock Options
Number of Option Shares
Outstanding beginning of period (in shares)	1,869,815	2,318,768	2,933,501
Granted (in shares)	0	0	0
Issued due to Separation modification (in shares)			400,170
Exercised (in shares)	(89,335)	(331,172)	(969,103)
Canceled/Forfeited (in shares)	0	(2,213)	(14,607)
Expired (in shares)	(104,900)	(115,568)	(31,193)
Outstanding end of period (in shares)	1,675,580	1,869,815	2,318,768	2,933,501
Weighted Average Exercise Price
Weighted average exercise price - beginning of period (in dollars per share)	$ 29.92	$ 30.40	$ 32.54
Weighted average exercise price - granted (in dollars per share)	0	0	0
Weighted average exercise price - Issued due to Separation modification (in dollars per share)			31.72
Weighted average exercise price - exercised (in dollars per share)	16.01	31.36	37.33
Weighted average exercise price - canceled/forfeited (in dollars per share)	0	55.95	48.33
Weighted average exercise price - expired (in dollars per share)	33.53	34.97	25.03
Weighted average exercise price - end of period (in dollars per share)	$ 30.43	$ 29.92	$ 30.40	$ 32.54
Additional Disclosures
Weighted average remaining contractual term (in years)	3 years 7 months 9 days	4 years 3 months 7 days	4 years 9 months 18 days	5 years 2 months 26 days
Aggregate intrinsic value	$ 8	$ 0	$ 79	$ 185
Aggregate intrinsic value of options exercised	$ 1	$ 8	$ 44
Vested and Expected to Vest and Exercisable
Vested and expected to vest in the future as of period end (in shares)	1,675,580
Exercisable as of period end (in shares)	1,675,580
Weighted average exercise price vested and expected to vest as of period end (in dollars per share)	$ 30.43
Weighted average exercise price exercisable as of period end (in dollars per share)	$ 30.43
Weighted average remaining contractual life vested and expected to vest in the future as of period end (in years)	3 years 7 months 9 days
Weighted average remaining contractual life exercisable as of period end (in years)	3 years 7 months 9 days
Aggregate intrinsic value vested and expected to vest in the future as of period end	$ 8
Aggregate intrinsic value exercisable as of period end	$ 8

Stock Incentive Plans - Sched_4

Stock Incentive Plans - Schedule of Share Based Compensation Shares Authorized under Stock Option Plans by Exercise Price Range Table (Details)	12 Months Ended
	Mar. 31, 2021$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares) | shares	1,675,580
Number of exercisable options (in shares) | shares	1,675,580
$8.96 - $24.47
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of option exercise price, minimum (in dollars per share)	$ 8.96
Range of option exercise price, maximum (in dollars per share)	$ 24.47
Number of options outstanding (in shares) | shares	413,808
Weighted average exercise price (in dollars per share)	$ 19.72
Weighted average remaining contractual term (in years)	2 years 6 months 21 days
Number of exercisable options (in shares) | shares	413,808
Weighted average exercise price of exercisable options (in dollars per share)	$ 19.71
$25.14 - $41.92
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of option exercise price, minimum (in dollars per share)	25.14
Range of option exercise price, maximum (in dollars per share)	$ 41.92
Number of options outstanding (in shares) | shares	798,509
Weighted average exercise price (in dollars per share)	$ 27.71
Weighted average remaining contractual term (in years)	3 years 8 months 4 days
Number of exercisable options (in shares) | shares	798,509
Weighted average exercise price of exercisable options (in dollars per share)	$ 27.71
$42.05 - $58.80
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of option exercise price, minimum (in dollars per share)	42.05
Range of option exercise price, maximum (in dollars per share)	$ 58.80
Number of options outstanding (in shares) | shares	463,263
Weighted average exercise price (in dollars per share)	$ 44.70
Weighted average remaining contractual term (in years)	4 years 5 months 1 day
Number of exercisable options (in shares) | shares	463,263
Weighted average exercise price of exercisable options (in dollars per share)	$ 44.70

Stock Incentive Plans - Sched_5

Stock Incentive Plans - Schedule of RSUs (Details) - RSUs - $ / shares	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Number of Shares
Equity instruments other than options nonvested - beginning balance (in shares)	4,174,476	2,809,775	3,985,616
Equity instruments other than options nonvested - granted (in shares)	8,026,810	3,166,405	1,136,002
Equity instruments other than options nonvested - issued due to separation modification (in shares)			649,649
Equity instruments other than options nonvested - released/issued (in shares)	(1,249,681)	(1,039,346)	(2,207,467)
Equity instruments other than options nonvested - canceled/forfeited (in shares)	(2,625,385)	(762,358)	(754,025)
Equity instruments other than options nonvested - ending balance (in shares)	8,326,220	4,174,476	2,809,775
Weighted Average Grant Date Fair Value
Weighted average fair value other than options - beginning balance (in dollars per share)	$ 55.45	$ 67.27	$ 47.25
Weighted average fair value other than options - granted (in dollars per share)	20.92	45.58	77.10
Weighted average fair value other than options - issued due to separation modification (in dollars per share)			51.98
Weighted average fair value other than options - released/issued (in dollars per share)	52.82	54.39	33.05
Weighted average fair value other than options - canceled/forfeited (in dollars per share)	35.16	59.46	62.01
Weighted average fair value other than options - ending balance (in dollars per share)	$ 28.98	$ 55.45	$ 67.27
Nonemployee director incentives
Number of Shares
Equity instruments other than options nonvested - beginning balance (in shares)	114,615	75,750	66,386
Equity instruments other than options nonvested - granted (in shares)	118,500	62,200	19,200
Equity instruments other than options nonvested - issued due to separation modification (in shares)			10,488
Equity instruments other than options nonvested - released/issued (in shares)	(48,455)	(23,335)	(20,324)
Equity instruments other than options nonvested - canceled/forfeited (in shares)	0	0	0
Equity instruments other than options nonvested - ending balance (in shares)	184,660	114,615	75,750
Weighted Average Grant Date Fair Value
Weighted average fair value other than options - beginning balance (in dollars per share)	$ 37.69	$ 46.31	$ 37.26
Weighted average fair value other than options - granted (in dollars per share)	18.82	35.90	87.88
Weighted average fair value other than options - issued due to separation modification (in dollars per share)			37.69
Weighted average fair value other than options - released/issued (in dollars per share)	26.90	60.90	51.59
Weighted average fair value other than options - canceled/forfeited (in dollars per share)	0	0	0
Weighted average fair value other than options - ending balance (in dollars per share)	$ 28.42	$ 37.69	$ 46.31

Cash Flows (Details)

Cash Flows (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Cash paid for:
Interest	$ 334	$ 371	$ 308
Taxes on income, net of refunds	798	247	197
Non-cash activities, operating
ROU assets obtained in exchange for lease, net	530	411	0
Prepaid assets acquired under long-term financing	46	99	48
Non-cash activities, investing
Capital expenditures in accounts payable and accrued expenses	341	66	45
Capital expenditures through finance lease obligations	348	605	668
Assets acquired under long-term financing	35	376	200
(Decrease) increase in deferred purchase price receivable	(52)	(205)	1,489
Contingent consideration	3	18	41
Non-cash activities, financing
Dividends declared but not yet paid	0	55	53
Income tax refunds	70	42	$ 174
Lease modifications and terminations	$ 763	216
Change in lease classification from operating to finance lease		$ 87

Other Expense (Income) (Details

Other Expense (Income) (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Other Income and Expenses [Abstract]
Non-service cost components of net periodic pension expense (income)	$ 110	$ (658)	$ (182)
Foreign currency loss (gain)	14	(25)	31
Other gain	(22)	(37)	(155)
Totals	102	(720)	(306)
Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Actuarial gain (loss)	$ (537)	$ 252	$ (153)

Segment and Geographic Inform_3

Segment and Geographic Information - Segment Information (Details) $ in Millions	12 Months Ended
	Mar. 31, 2021USD ($)segment	Mar. 31, 2020USD ($)	Mar. 31, 2019USD ($)
Segment Reporting Information [Line Items]
Number of reporting segments | segment	2
Revenues	$ 17,729	$ 19,577	$ 20,753
Segment Profit	1,102	2,061	3,269
Depreciation and amortization	1,440	1,359	1,429
Amortization of acquired intangible assets	530	583	539
Reconciliation of Consolidated Operating Income to Income Before Taxes [Abstract]
Segment Profit	1,102	2,061	3,269
Interest income	98	165	128
Interest expense	(361)	(383)	(334)
Restructuring costs	(551)	(252)	(465)
Transaction, separation and integration-related costs	(358)	(318)	(401)
Amortization of acquired intangibles	(530)	(583)	(539)
Gains on dispositions	2,004	0	0
Pension and OPEB actuarial and settlement (losses) gains	(519)	244	(143)
Debt extinguishment cost	(41)	0	0
Impairment losses	(190)	(6,794)	0
Gain on arbitration award	0	632	0
Income (loss) from continuing operations, before taxes	654	(5,228)	1,515
Operating segments
Segment Reporting Information [Line Items]
Revenues	17,729	19,577	20,753
Segment Profit	1,365	2,308	3,556
Depreciation and amortization	1,334	1,250	1,302
Reconciliation of Consolidated Operating Income to Income Before Taxes [Abstract]
Segment Profit	1,365	2,308	3,556
Operating segments | GBS
Segment Reporting Information [Line Items]
Revenues	8,336	9,111	8,684
Segment Profit	1,120	1,301	1,645
Depreciation and amortization	212	199	90
Reconciliation of Consolidated Operating Income to Income Before Taxes [Abstract]
Segment Profit	1,120	1,301	1,645
Operating segments | GIS
Segment Reporting Information [Line Items]
Revenues	9,393	10,466	12,069
Segment Profit	245	1,007	1,911
Depreciation and amortization	1,122	1,051	1,212
Reconciliation of Consolidated Operating Income to Income Before Taxes [Abstract]
Segment Profit	245	1,007	1,911
All Other
Segment Reporting Information [Line Items]
Revenues	0	0	0
Segment Profit	(263)	(247)	(287)
Depreciation and amortization	106	109	127
Reconciliation of Consolidated Operating Income to Income Before Taxes [Abstract]
Segment Profit	$ (263)	$ (247)	$ (287)

Segment and Geographic Inform_4

Segment and Geographic Information - Geographic PPE (Details) - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
Total Property and Equipment, net	$ 2,946	$ 3,547
United States
Segment Reporting Information [Line Items]
Total Property and Equipment, net	1,189	1,621
U.K.
Segment Reporting Information [Line Items]
Total Property and Equipment, net	465	493
Australia
Segment Reporting Information [Line Items]
Total Property and Equipment, net	149	134
Other Europe
Segment Reporting Information [Line Items]
Total Property and Equipment, net	603	757
Other International
Segment Reporting Information [Line Items]
Total Property and Equipment, net	$ 540	$ 542

Revenue - Disaggregation of Rev

Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 17,729	$ 19,577	$ 20,753
United States
Disaggregation of Revenue [Line Items]
Revenues	5,983	7,225	7,677
U.K.
Disaggregation of Revenue [Line Items]
Revenues	2,413	2,776	3,175
Other Europe
Disaggregation of Revenue [Line Items]
Revenues	5,129	5,121	5,294
Australia
Disaggregation of Revenue [Line Items]
Revenues	1,529	1,487	1,582
Other International
Disaggregation of Revenue [Line Items]
Revenues	$ 2,675	$ 2,968	$ 3,025

Revenue - Narrative (Details)

Revenue - Narrative (Details) $ in Billions	Mar. 31, 2021USD ($)
Revenue from Contract with Customer [Abstract]
Remaining performance obligation	$ 23
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation percentage	39.00%
Remaining performance obligation period	12 months

Revenue - Contract Balances (De

Revenue - Contract Balances (Details) - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Revenue from Contract with Customer [Abstract]
Trade receivables, net	$ 2,871	$ 3,059
Contract assets	351	454
Contract liabilities	$ 1,701	$ 1,756	$ 1,886

Revenue - Change in Contract Li

Revenue - Change in Contract Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Change In Contract With Customer, Liability [Roll Forward]
Balance, beginning of period	$ 1,756	$ 1,886
Deferred revenue	2,933	2,910
Recognition of deferred revenue	(2,922)	(2,925)
Currency translation adjustment	128	(48)
Other	(194)	(67)
Balance, end of period	1,701	$ 1,756
HHS Business
Change In Contract With Customer, Liability [Roll Forward]
Other	52
HPS Business
Change In Contract With Customer, Liability [Roll Forward]
Other	$ 62

Revenue - Capitalized Contract

Revenue - Capitalized Contract Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Capitalized sales commission cost
Capitalized Contract Cost [Line Items]
Capitalized contract cost, net	$ 256	$ 262
Capitalized contract cost, amortization	70	72	$ 62
Transition and transformation contract costs, net
Capitalized Contract Cost [Line Items]
Capitalized contract cost, net	888	874
Capitalized contract cost, amortization	$ 264	$ 280	$ 258

Restructuring Costs (Details)

Restructuring Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 551	$ 252	$ 465
Restructuring Reserve [Abstract]
Accrued expenses and other current liabilities	225	145
Other long-term liabilities	45	35
Total	270	180
Fiscal 2019 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring costs	(3)	(25)
Restructuring Reserve [Abstract]
Total	13	30	206
Restructuring cost incurred to date	296
Fiscal 2018 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring costs		(11)
Restructuring Reserve [Abstract]
Total		20	94
Restructuring cost incurred to date	479
Fiscal 2018 Plan
Restructuring Reserve [Abstract]
Restructuring cost incurred to date	998
Workforce Reductions | Fiscal 2019 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring costs	(1)	(25)
Restructuring Reserve [Abstract]
Total	7	25	138
Restructuring cost incurred to date	279
Workforce Reductions | Fiscal 2018 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring costs		(10)
Restructuring Reserve [Abstract]
Total		20	59
Restructuring cost incurred to date	337
Workforce Reductions | Fiscal 2018 Plan
Restructuring Reserve [Abstract]
Restructuring cost incurred to date	802
Facilities Costs | Fiscal 2019 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring costs	(2)	0
Restructuring Reserve [Abstract]
Total	6	5	68
Restructuring cost incurred to date	17
Facilities Costs | Fiscal 2018 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring costs		(1)
Restructuring Reserve [Abstract]
Total		$ 0	$ 35
Restructuring cost incurred to date	142
Facilities Costs | Fiscal 2018 Plan
Restructuring Reserve [Abstract]
Restructuring cost incurred to date	$ 196

Restructuring Costs - Restructu

Restructuring Costs - Restructuring Liability (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance	$ 180
Costs Expensed, Net of Reversals	551	$ 252	$ 465
Restructuring Liability, ending balance	270	180
Fiscal 2021 Plan
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance	0
Costs Expensed, Net of Reversals	538
Costs Not Affecting Restructuring Liability	(28)
Cash Paid	(327)
Other	0
Restructuring Liability, ending balance	183	0
Fiscal 2020 Plan
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance	76	0
Costs Expensed, Net of Reversals	4	292
Costs Not Affecting Restructuring Liability	5	(14)
Cash Paid	(62)	(193)
Other	4	(9)
Restructuring Liability, ending balance	27	76	0
Costs reversed and adjustments	11
Fiscal 2020 Plan | Adoption of ASC 842
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance		0
Restructuring Liability, ending balance			0
Fiscal 2019 Plan
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance	30	206
Costs Expensed, Net of Reversals	(3)	(25)
Costs Not Affecting Restructuring Liability	(1)	(1)
Cash Paid	(18)	(90)
Other	5	(7)
Restructuring Liability, ending balance	13	30	206
Costs reversed and adjustments	9	30
Fiscal 2019 Plan | Adoption of ASC 842
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance		(53)
Restructuring Liability, ending balance			(53)
Fiscal 2018 Plan
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance	20	94
Costs Expensed, Net of Reversals		(11)
Costs Not Affecting Restructuring Liability		0
Cash Paid		(31)
Other		4
Restructuring Liability, ending balance		20	94
Costs reversed and adjustments		11
Fiscal 2018 Plan | Adoption of ASC 842
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance		(36)
Restructuring Liability, ending balance			(36)
Other Prior Year Plans
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance	24
Costs Expensed, Net of Reversals	12
Costs Not Affecting Restructuring Liability	(7)
Cash Paid	(19)
Other	2
Restructuring Liability, ending balance	12	24
Costs reversed and adjustments	3
Other Prior Year Plans
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance	4	10
Costs Expensed, Net of Reversals		(1)
Costs Not Affecting Restructuring Liability		0
Cash Paid		(3)
Other		(1)
Restructuring Liability, ending balance		4	10
Costs reversed and adjustments		3
Other Prior Year Plans | Adoption of ASC 842
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance		(1)
Restructuring Liability, ending balance			(1)
Acquired Liabilities
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance	50	69
Costs Expensed, Net of Reversals	0	(3)
Costs Not Affecting Restructuring Liability	1	0
Cash Paid	(16)	(17)
Other	0	1
Restructuring Liability, ending balance	35	50	69
Acquired Liabilities | Adoption of ASC 842
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance		0
Restructuring Liability, ending balance			0
Workforce Reductions | Fiscal 2021 Plan
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance	0
Costs Expensed, Net of Reversals	501
Costs Not Affecting Restructuring Liability	(11)
Cash Paid	(313)
Other	3
Restructuring Liability, ending balance	180	0
Workforce Reductions | Fiscal 2020 Plan
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance	74	0
Costs Expensed, Net of Reversals	8	271
Costs Not Affecting Restructuring Liability	1	(11)
Cash Paid	(60)	(177)
Other	4	(9)
Restructuring Liability, ending balance	27	74	0
Costs reversed and adjustments	14
Workforce Reductions | Fiscal 2020 Plan | Adoption of ASC 842
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance		0
Restructuring Liability, ending balance			0
Workforce Reductions | Fiscal 2019 Plan
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance	25	138
Costs Expensed, Net of Reversals	(1)	(25)
Costs Not Affecting Restructuring Liability	(2)	0
Cash Paid	(17)	(83)
Other	2	(5)
Restructuring Liability, ending balance	7	25	138
Workforce Reductions | Fiscal 2019 Plan | Adoption of ASC 842
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance		0
Restructuring Liability, ending balance			0
Workforce Reductions | Fiscal 2018 Plan
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance	20	59
Costs Expensed, Net of Reversals		(10)
Costs Not Affecting Restructuring Liability		0
Cash Paid		(29)
Other		0
Restructuring Liability, ending balance		20	59
Workforce Reductions | Fiscal 2018 Plan | Adoption of ASC 842
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance		0
Restructuring Liability, ending balance			0
Workforce Reductions | Other Prior Year Plans
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance	24
Costs Expensed, Net of Reversals	12
Costs Not Affecting Restructuring Liability	(7)
Cash Paid	(19)
Other	2
Restructuring Liability, ending balance	12	24
Workforce Reductions | Other Prior Year Plans
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance	4	9
Costs Expensed, Net of Reversals		(1)
Costs Not Affecting Restructuring Liability		0
Cash Paid		(3)
Other		(1)
Restructuring Liability, ending balance		4	9
Workforce Reductions | Other Prior Year Plans | Adoption of ASC 842
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance		0
Restructuring Liability, ending balance			0
Workforce Reductions | Acquired Liabilities
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance	39	51
Costs Expensed, Net of Reversals	1	1
Costs Not Affecting Restructuring Liability	0	0
Cash Paid	(7)	(16)
Other	1	3
Restructuring Liability, ending balance	34	39	51
Workforce Reductions | Acquired Liabilities | Adoption of ASC 842
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance		0
Restructuring Liability, ending balance			0
Facilities Costs | Fiscal 2021 Plan
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance	0
Costs Expensed, Net of Reversals	37
Costs Not Affecting Restructuring Liability	(17)
Cash Paid	(14)
Other	(3)
Restructuring Liability, ending balance	3	0
Facilities Costs | Fiscal 2020 Plan
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance	2	0
Costs Expensed, Net of Reversals	(4)	21
Costs Not Affecting Restructuring Liability	4	(3)
Cash Paid	(2)	(16)
Other	0	0
Restructuring Liability, ending balance	0	2	0
Facilities Costs | Fiscal 2020 Plan | Adoption of ASC 842
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance		0
Restructuring Liability, ending balance			0
Facilities Costs | Fiscal 2019 Plan
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance	5	68
Costs Expensed, Net of Reversals	(2)	0
Costs Not Affecting Restructuring Liability	1	(1)
Cash Paid	(1)	(7)
Other	3	(2)
Restructuring Liability, ending balance	6	5	68
Facilities Costs | Fiscal 2019 Plan | Adoption of ASC 842
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance		(53)
Restructuring Liability, ending balance			(53)
Facilities Costs | Fiscal 2018 Plan
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance	0	35
Costs Expensed, Net of Reversals		(1)
Costs Not Affecting Restructuring Liability		0
Cash Paid		(2)
Other		4
Restructuring Liability, ending balance		0	35
Facilities Costs | Fiscal 2018 Plan | Adoption of ASC 842
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance		(36)
Restructuring Liability, ending balance			(36)
Facilities Costs | Other Prior Year Plans
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance	0
Costs Expensed, Net of Reversals	0
Costs Not Affecting Restructuring Liability	0
Cash Paid	0
Other	0
Restructuring Liability, ending balance	0	0
Facilities Costs | Other Prior Year Plans
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance	0	1
Costs Expensed, Net of Reversals		0
Costs Not Affecting Restructuring Liability		0
Cash Paid		0
Other		0
Restructuring Liability, ending balance		0	1
Facilities Costs | Other Prior Year Plans | Adoption of ASC 842
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance		(1)
Restructuring Liability, ending balance			(1)
Facilities Costs | Acquired Liabilities
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance	11	18
Costs Expensed, Net of Reversals	(1)	(4)
Costs Not Affecting Restructuring Liability	1	0
Cash Paid	(9)	(1)
Other	(1)	(2)
Restructuring Liability, ending balance	$ 1	11	18
Facilities Costs | Acquired Liabilities | Adoption of ASC 842
Restructuring Reserve [Roll Forward]
Restructuring Liability, beginning balance		$ 0
Restructuring Liability, ending balance			$ 0

Commitments and Contingencies_2

Commitments and Contingencies (Details) $ in Millions	12 Months Ended
	Mar. 31, 2021USD ($)
Minimum Purchase Commitment
2022	$ 1,487
2023	1,227
2024	423
2025	175
2026	177
Thereafter	15
Total	$ 3,504
Minimum
Long-term Purchase Commitment [Line Items]
Long-term purchase commitment, period	1 year
Maximum
Long-term Purchase Commitment [Line Items]
Long-term purchase commitment, period	5 years

Commitments and Contingencies -

Commitments and Contingencies - Guarantor Obligations (Details) $ in Millions	Mar. 31, 2021USD ($)
Guarantor Obligations [Line Items]
Fiscal 2022	$ 341
Fiscal 2023	74
Fiscal 2024 and Thereafter	590
Total	1,005
Surety bonds
Guarantor Obligations [Line Items]
Fiscal 2022	98
Fiscal 2023	18
Fiscal 2024 and Thereafter	69
Total	185
Letters of credit
Guarantor Obligations [Line Items]
Fiscal 2022	172
Fiscal 2023	30
Fiscal 2024 and Thereafter	510
Total	712
Stand-by letters of credit
Guarantor Obligations [Line Items]
Fiscal 2022	71
Fiscal 2023	26
Fiscal 2024 and Thereafter	11
Total	$ 108

Commitments and Contingencies_3

Commitments and Contingencies - Contingencies (Details) administrator in Thousands, $ in Thousands

Feb. 21, 2020USD ($)

Aug. 06, 2019USD ($)

May 12, 2015employee

Oct. 31, 2020USD ($)

Aug. 31, 2020USD ($)

Jul. 31, 2020USD ($)

Dec. 31, 2019USD ($)plaintiff

Oct. 31, 2019USD ($)

Sep. 30, 2019USD ($)

Jun. 30, 2019USD ($)plaintiff

Mar. 31, 2019lawsuitofficer

Oct. 31, 2018plaintiff

Oct. 31, 2017USD ($)

Oct. 31, 2015USD ($)

Mar. 31, 2021USD ($)

Mar. 31, 2021USD ($)individual

Apr. 03, 2015administrator

Mar. 31, 2021USD ($)

Dec. 27, 2018officer

Feb. 02, 2017joint_venture

Loss Contingencies [Line Items]

Number of partially-owned joint ventures involved in possible sanctions law violations | joint_venture

2

Strauch Fair Labor Standards Act Collective Action

Loss Contingencies [Line Items]

Number of plaintiffs | administrator

4

Number of system administrators filed Consent to Join forms | administrator

1

Number of individuals involved in collective action | individual

800

Damages awarded

$ 18,750

$ 8,100

Damages sought

$ 14,100

Kemper Corporate Services, Inc. v. Computer Sciences Corporation

Loss Contingencies [Line Items]

Payments for litigation settlement

$ 60,000

Insurance recoveries

$ 12,500

In re DXC Technology Company Securities Litigation

Loss Contingencies [Line Items]

Number of officers named in case | officer

2

Number of lawsuits filed | lawsuit

3

Perspecta-related Disputes, Separation and Distribution Agreement

Loss Contingencies [Line Items]

Damages sought

$ 500,000

$ 120,000

$ 800,000

$ 990,000

Perspecta-related Disputes, IT Services Agreement

Loss Contingencies [Line Items]

Damages awarded

$ 69,000

Damages sought

$ 31,000

$ 39,000

Officer | In re DXC Technology Company Securities Litigation

Loss Contingencies [Line Items]

Number of defendants | officer

1

Pending Litigation | Kemper Corporate Services, Inc. v. Computer Sciences Corporation

Loss Contingencies [Line Items]

Damages sought

$ 100,000

Pending Litigation | Forsyth et al. v. HP Inc. and Hewlett Packard Enterprise

Loss Contingencies [Line Items]

Number of plaintiffs | plaintiff

145

16

Settled Litigation | Computer Sciences Corporation v. Eric Pulier et al

Loss Contingencies [Line Items]

Former employees under investigation | employee

2

Settled Litigation | Kemper Corporate Services, Inc. v. Computer Sciences Corporation

Loss Contingencies [Line Items]

Litigation settlement to other party

$ 84,200

Settled Litigation | Forsyth et al. v. HP Inc. and Hewlett Packard Enterprise

Loss Contingencies [Line Items]

Number of plaintiffs | plaintiff

142

Employees of Former Business Units of HPE | Settled Litigation | Forsyth et al. v. HP Inc. and Hewlett Packard Enterprise

Loss Contingencies [Line Items]

Number of plaintiffs | plaintiff

35

7

Subsequent Events (Details)

Subsequent Events (Details) € in Millions, $ in Millions	Apr. 01, 2021USD ($)	Mar. 16, 2021USD ($)	Oct. 31, 2020USD ($)	Mar. 31, 2021USD ($)	Mar. 31, 2020USD ($)	Mar. 31, 2019USD ($)	Apr. 01, 2021EUR (€)
Subsequent Event [Line Items]
Repayments of debt			$ 3,500	$ 3,552	$ 1,039	$ 2,625
Subsequent Event | HPS Business
Subsequent Event [Line Items]
Transaction consideration	$ 543						€ 462
Senior Notes, Due 2023 | Senior notes | Subsequent Event
Subsequent Event [Line Items]
Effective interest rate	4.45%						4.45%
Repayments of debt	$ 154
Senior Notes, Due 2023 | Senior notes
Subsequent Event [Line Items]
Effective interest rate		4.45%		4.45%
Repayments of debt		$ 6
Senior Notes, Due 2023 | Senior notes | Subsequent Event
Subsequent Event [Line Items]
Effective interest rate	4.45%						4.45%
Repayments of debt	$ 165

Uncategorized Items - dxc-20210

Label	Element	Value
Accounting Standards Update [Extensible List]	us-gaap_AccountingStandardsUpdateExtensibleList	us-gaap:AccountingStandardsUpdate201409Member