Investigations and Out of Period Adjustments (Impact on Consolidated Statement of Operations) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Jun. 28, 2013	Jun. 29, 2012
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Revenues	$ 3,260	$ 3,633
Costs of services (excludes depreciation and amortization)	2,466	2,977
Selling, general and administrative	292	281
Depreciation and amortization	255	262
Restructuring costs	7	27
Interest expense	39	44
Other (income) expense, net	(1)	12
Income (loss) from continuing operations before taxes	206	35
Taxes on income	65	18
Income from continuing operations	141	17
Income from discontinued operations, net of taxes	18	25
Net income (loss)	156	40
Earnings Per Share, Diluted [Abstract]
Continuing operations (in dollars per share)	$ 0.91	$ 0.10
Discontinued operations (in dollars per share)	$ 0.11	$ 0.16
Diluted EPS (in dollars per share)	$ 1.02	$ 0.26
Adjustment Increase/(Decrease) [Member]
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Revenues	19	6
Costs of services (excludes depreciation and amortization)	26	1
Selling, general and administrative	0	3
Depreciation and amortization	0	(2)
Restructuring costs	2	5
Interest expense	0	0
Other (income) expense, net	0	0
Income (loss) from continuing operations before taxes	(9)	(1)
Taxes on income	(11)	4
Income from continuing operations	2	(5)
Income from discontinued operations, net of taxes	0	0
Net income (loss)	2	(5)
Earnings Per Share, Diluted [Abstract]
Continuing operations (in dollars per share)	$ 0.01	$ (0.03)
Discontinued operations (in dollars per share)	$ 0.00	$ 0.00
Diluted EPS (in dollars per share)	$ 0.01	$ (0.03)
Amount Adjusted for Removal of Errors [Member]
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Revenues	3,279	3,639
Costs of services (excludes depreciation and amortization)	2,492	2,978
Selling, general and administrative	292	284
Depreciation and amortization	255	260
Restructuring costs	9	32
Interest expense	39	44
Other (income) expense, net	(1)	12
Income (loss) from continuing operations before taxes	197	34
Taxes on income	54	22
Income from continuing operations	143	12
Income from discontinued operations, net of taxes	18	25
Net income (loss)	$ 158	$ 35
Earnings Per Share, Diluted [Abstract]
Continuing operations (in dollars per share)	$ 0.92	$ 0.07
Discontinued operations (in dollars per share)	$ 0.11	$ 0.16
Diluted EPS (in dollars per share)	$ 1.03	$ 0.23