Stock Incentive Plans (Tables)

9 Months Ended

Dec. 31, 2020

Share-based Payment Arrangement [Abstract]

Schedule of Share Based Compensation Shares Authorized Under Stock Option Plans

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 December 31, 2020
	Reserved for Issuance	Available for Future Grants
DXC Employee Equity Plan	51,200,000	32,794,274
DXC Director Equity Plan	745,000	435,951
DXC Share Purchase Plan	250,000	165,185
Total	52,195,000	33,395,410

Disclosure of Share Based Compensation Arrangements by Share Based Payment Award

Stock Options

	Number of Option Shares	Weighted Average Exercise Price		Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value (in millions)
Outstanding as of March 31, 2020	1,869,815	$	29.92	4.27	$	—
Granted	—	$	—
Exercised	(39,601)	$	17.43		$	—
Canceled/Forfeited	—	$	—
Expired	(82,614)	$	31.24
Outstanding as of December 31, 2020	1,747,600	$	30.11	3.73	$	3
Vested and exercisable as of December 31, 2020	1,747,600	$	30.11	3.73	$	3

Restricted Stocks

	Employee Equity Plan			Director Equity Plan
	Number of Shares	Weighted Average Grant Date Fair Value		Number of Shares	Weighted Average Grant Date Fair Value
Outstanding as of March 31, 2020	4,174,476	$	55.45	114,615	$	37.69
Granted	7,576,602	$	18.67	118,500	$	18.82
Settled	(1,045,190)	$	50.65	(48,455)	$	26.90
Canceled/Forfeited	(2,042,804)	$	36.14	—	$	—
Outstanding as of December 31, 2020	8,663,084	$	28.43	184,660	$	28.42

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

Share-Based Compensation

	Three Months Ended				Nine Months Ended
(in millions)	December 31, 2020		December 31, 2019		December 31, 2020		December 31, 2019
Total share-based compensation cost	$	6	$	9	$	42	$	57
Related income tax benefit	$	2	$	(3)	$	7	$	8
Total intrinsic value of options exercised	$	—	$	1	$	—	$	8
Tax benefits from exercised stock options and awards	$	1	$	3	$	5	$	13