CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2022	Mar. 31, 2022
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 46	$ 55
Intangible assets, accumulated amortization	5,186	5,124
Property and equipment, accumulated depreciation	$ 3,917	$ 3,998
DXC 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)	232,994,878	240,508,348
Treasury shares (in shares)	3,160,188	2,878,079