Number Of Shares Received Per Equity Award

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Period

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Redeemable, Number of Anniversaries

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- Definition

Share-based Compensation Arrangement By Share-Based Payment Award, Award Settlement Period

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- Definition

Share-based Compensation Arrangement By Share-based Payment Award, Options, Converted Follow Acquisition, Percentage

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Term

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- Definition

Share-based Payment Plan Term

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No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

The number of shares purchased on the open market during the period for issuance to employees under the plan.

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- Definition

Percentage of vesting of share-based compensation awards.

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- Definition

Number of options vested.

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No definition available.

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Stock Incentive Plans - Narrative (Details) $ in Millions		3 Months Ended		9 Months Ended
Stock Incentive Plans - Narrative (Details) $ in Millions	Apr. 01, 2017 USD ($) shares	Dec. 31, 2018 USD ($) shares	Dec. 31, 2017 USD ($)	Dec. 31, 2018 USD ($) anniversary shares	Dec. 31, 2017 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incremental stock compensation expense		$ 16	$ 19	$ 57	$ 76
Plan term				10 years
Total unrecognized compensation expense related to unvested awards, net of expected forfeitures		$ 1		$ 1
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)				3 years
Term of options				10 years
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares received per RSU \| shares		1		1
Total unrecognized compensation expense related to unvested awards, net of expected forfeitures		$ 122		$ 122
Weighted average period over which cost is expected to be recognized (in years)				1 year 11 months 9 days
RSUs \| Five Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual installments				5 years
RSUs \| Ten Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual installments				10 years
RSUs \| Fifteen Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual installments				15 years
RSUs \| Service-based RSU's
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of anniversaries following the executive's termination that the shares are redeemable \| anniversary				10
PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage				25.00%
Vesting period (in years)				3 years
Performance period				3 years
HPES
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested awards became vested, triggered by Merger (in shares) \| shares	3,600,000
Incremental stock compensation expense	$ 26
HPES \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of options converted into RSU's upon merger	67.00%
Upon Merger \| HPES \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage	33.00%
DXC Share Purchase Plan \| Stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares purchased under plan (in shares) \| shares		3,574		9,069