Defined Benefit Pension Plan Accounting Policy Change Impact on Consolidatd Statement of Operations (Details) (USD $)	3 Months Ended
	Jul. 04, 2014	Jun. 28, 2013
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Costs of services (excludes depreciation and amortization and restructuring costs)	$ 2,364,000,000	$ 2,437,000,000
Selling, general and administrative	344,000,000	288,000,000
Income from continuing operations before taxes	214,000,000	234,000,000
Taxes on income	55,000,000	73,000,000
Income from continuing operations	159,000,000	161,000,000
(Loss) income from discontinued operations, net of taxes	(8,000,000)	16,000,000
Net income	151,000,000	177,000,000
Net income attributable to CSC common stockholders	146,000,000	174,000,000
Diluted EPS - Continuing operations (in dollars per share)	$ 1.06	$ 1.05
Basic EPS - Discontinued Operations (in dollars per share)	$ (0.06)	$ 0.11
Diluted EPS - Continuing operations (in dollars per share)	$ 1.03	$ 1.03
Diluted EPS - Discontinued operations (in dollars per share)	$ (0.05)	$ 0.11
Previous accounting methods
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Costs of services (excludes depreciation and amortization and restructuring costs)	2,382,000,000
Selling, general and administrative	347,000,000
Income from continuing operations before taxes	193,000,000
Taxes on income	50,000,000
Income from continuing operations	143,000,000
Net income	135,000,000
Net income attributable to CSC common stockholders	130,000,000
Diluted EPS - Continuing operations (in dollars per share)	$ 0.95
Diluted EPS - Continuing operations (in dollars per share)	$ 0.93
Previous accounting methods | As previously reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Costs of services (excludes depreciation and amortization and restructuring costs)		2,456,000,000
Selling, general and administrative		292,000,000
Income from continuing operations before taxes		211,000,000
Taxes on income		66,000,000
Income from continuing operations		145,000,000
(Loss) income from discontinued operations, net of taxes		14,000,000
Net income		159,000,000
Net income attributable to CSC common stockholders		156,000,000
Diluted EPS - Continuing operations (in dollars per share)		$ 0.95
Basic EPS - Discontinued Operations (in dollars per share)		$ 0.09
Diluted EPS - Continuing operations (in dollars per share)		$ 0.93
Diluted EPS - Discontinued operations (in dollars per share)		$ 0.09
Impact of change in accounting methods
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of change on equity from application of new accounting policy	1,500,000,000
Costs of services	(18,000,000)	(19,000,000)
Selling, general and administrative expenses	(3,000,000)	(4,000,000)
Income from continuing operations, before taxes	21,000,000	23,000,000
Taxes on income	5,000,000	7,000,000
Income from continuing operations	16,000,000	16,000,000
Income from discontinued operations, net of taxes		2,000,000
Net income	16,000,000	18,000,000
Net income attributable to CSC common stockholders	$ 16,000,000	$ 18,000,000
Diluted EPS - Continuing operations (in dollars per share)	$ 0.11	$ 0.10
Basic EPS - Discontinued Operations (in dollars per share)		$ 0.02
Diluted EPS - Continuing operations (in dollars per share)	$ 0.10	$ 0.10
Diluted EPS - Discontinued operations (in dollars per share)		$ 0.02