Stock Incentive Plans - Schedule of RSUs (Details) - RSUs	6 Months Ended
Sep. 30, 2019 $ / shares shares
DXC Employee Equity Plan
Number of Shares
Equity instruments other than options nonvested - beginning balance (in shares) \| shares	2,809,775
Equity instruments other than options nonvested - granted (in shares) \| shares	2,656,777
Equity instruments other than options nonvested - settled (in shares) \| shares	(668,412)
Equity instruments other than options nonvested - canceled/forfeited (in shares) \| shares	(486,330)
Equity instruments other than options nonvested - ending balance (in shares) \| shares	4,311,810
Weighted Average Grant Date Fair Value
Weighted average fair value other than options - beginning balance (in dollars per share) \| $ / shares	$ 67.27
Weighted average fair value other than options - granted (in dollars per share) \| $ / shares	48.56
Weighted average fair value other than options - settled (in dollars per share) \| $ / shares	49.70
Weighted average fair value other than options - canceled/forfeited (in dollars per share) \| $ / shares	61.43
Weighted average fair value other than options - ending balance (in dollars per share) \| $ / shares	$ 59.13
DXC Director Equity Plan
Number of Shares
Equity instruments other than options nonvested - beginning balance (in shares) \| shares	75,750
Equity instruments other than options nonvested - granted (in shares) \| shares	68,200
Equity instruments other than options nonvested - settled (in shares) \| shares	(21,971)
Equity instruments other than options nonvested - canceled/forfeited (in shares) \| shares	0
Equity instruments other than options nonvested - ending balance (in shares) \| shares	121,979
Weighted Average Grant Date Fair Value
Weighted average fair value other than options - beginning balance (in dollars per share) \| $ / shares	$ 46.31
Weighted average fair value other than options - granted (in dollars per share) \| $ / shares	35.70
Weighted average fair value other than options - settled (in dollars per share) \| $ / shares	63.82
Weighted average fair value other than options - canceled/forfeited (in dollars per share) \| $ / shares	0
Weighted average fair value other than options - ending balance (in dollars per share) \| $ / shares	$ 37.23

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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