Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Effective tax rate	21.00%	(131.00%)	27.00%	(8.00%)
Income taxes receivable to be paid to DXC upon receipt	$ 33		$ 33
Income tax receivable adjusted for IRS refund			$ 72

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Carrying amount as of the balance sheet date of income taxes previously overpaid to tax authorities (such as U.S. Federal, state and local tax authorities) representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Also called income tax refund receivable.

+ References

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The amount of cash received during the period as refunds for the overpayment of taxes.

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