Earnings (Loss) Per Share (Details) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	12 Months Ended
Mar. 28, 2014	Mar. 29, 2013	Mar. 30, 2012
Net income attributable to CSC common shareholders [Abstract]
Income from continuing operations, net of tax	$ 859	$ 278	$ (778)
From discontinued operations	88	482	162
Net income (loss) attributable to CSC common stockholders	$ 947us-gaap_NetIncomeLoss	$ 760us-gaap_NetIncomeLoss	$ (616)us-gaap_NetIncomeLoss
Common share information [Abstract]
Weighted average common shares outstanding for basic EPS (in shares)	147,647	154,590	155,012
Dilutive effect of stock options and equity awards (in shares)	3,114	967	0
Shares for diluted earngns (loss) per share (in shares)	150,761	155,557	155,012
Basic EPS:
Continuing operations (in dollars per share)	$ 5.81	$ 1.80	$ (5.02)
Discontinued operations (in dollars per share)	$ 0.60	$ 3.12	$ 1.05
Total	$ 6.41us-gaap_EarningsPerShareBasic	$ 4.92us-gaap_EarningsPerShareBasic	$ (3.97)us-gaap_EarningsPerShareBasic
Diluted EPS:
Continuing operations (in dollars per share)	$ 5.70	$ 1.79	$ (5.02)
Discontinued operations (in dollars per share)	$ 0.58	$ 3.10	$ 1.05
Total	$ 6.28us-gaap_EarningsPerShareDiluted	$ 4.89us-gaap_EarningsPerShareDiluted	$ (3.97)us-gaap_EarningsPerShareDiluted

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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