CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2017	Mar. 31, 2017
Current assets:
Allowance for doubtful accounts	$ 30	$ 26
Intangible and other assets:
Accumulated amortization	2,390	2,293
Less: accumulated depreciation and amortization	$ 3,209	$ 2,816
CSC 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)	285,316,466	141,298,797
Common stock in treasury, at cost (in shares)	658,819	0