Restructuring Costs (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			9 Months Ended
	Dec. 28, 2012		Dec. 30, 2011	Dec. 28, 2012		Dec. 30, 2011
Composition of Workforce Restructuring Liability [Roll Forward]
Costs expensed in fiscal 2013	$ 26		$ 0	$ 111		$ 0
Restructuring liability	106			106
Accrued expenses [Member]
Composition of Workforce Restructuring Liability [Roll Forward]
Restructuring reserve, current	103			103
Other Long Term Liabilities [Member]
Composition of Workforce Restructuring Liability [Roll Forward]
Restructuring reserve, noncurrent	3			3
NPS [Member]
Composition of Workforce Restructuring Liability [Roll Forward]
Costs expensed in fiscal 2013	2			3
MSS [Member]
Composition of Workforce Restructuring Liability [Roll Forward]
Costs expensed in fiscal 2013	8			68
BSS [Member]
Composition of Workforce Restructuring Liability [Roll Forward]
Costs expensed in fiscal 2013	8			32
Corporate [Member]
Composition of Workforce Restructuring Liability [Roll Forward]
Costs expensed in fiscal 2013	8			8
Fiscal 2013 Plan [Member]
Composition of Workforce Restructuring Liability [Roll Forward]
Restructuring liability				0
Costs expensed in fiscal 2013	25			78
Less: costs not affecting restructuring liability				(6)	[1]
Cash paid				(6)
Other				1	[2]
Restructuring liability	67			67
Fiscal 2013 Plan [Member] | NPS [Member]
Composition of Workforce Restructuring Liability [Roll Forward]
Costs expensed in fiscal 2013	2			3
Fiscal 2013 Plan [Member] | MSS [Member]
Composition of Workforce Restructuring Liability [Roll Forward]
Costs expensed in fiscal 2013	10			56
Fiscal 2013 Plan [Member] | BSS [Member]
Composition of Workforce Restructuring Liability [Roll Forward]
Costs expensed in fiscal 2013	5			11
Fiscal 2013 Plan [Member] | Corporate [Member]
Composition of Workforce Restructuring Liability [Roll Forward]
Costs expensed in fiscal 2013	8			8
Fiscal 2013 Plan [Member] | Workforce Reductions [Member]
Composition of Workforce Restructuring Liability [Roll Forward]
Restructuring liability				0
Costs expensed in fiscal 2013				72
Less: costs not affecting restructuring liability				(6)	[1]
Cash paid				(6)
Other				1	[2]
Restructuring liability	61			61
Fiscal 2013 Plan [Member] | Other [Member]
Composition of Workforce Restructuring Liability [Roll Forward]
Restructuring liability				0	[3]
Costs expensed in fiscal 2013				6	[3]
Less: costs not affecting restructuring liability				0	[1],[3]
Cash paid				0	[3]
Other				0	[2],[3]
Restructuring liability	6	[3]		6	[3]
Fiscal 2013 Plan [Member] | Pension Benefit Augmentation [Member]
Composition of Workforce Restructuring Liability [Roll Forward]
Costs expensed in fiscal 2013	1			6
Fiscal 2012 Plan [Member]
Composition of Workforce Restructuring Liability [Roll Forward]
Restructuring liability				119
Costs expensed in fiscal 2013	1			33
Less: costs not affecting restructuring liability				(3)	[4]
Cash paid				(108)
Other				(2)	[2]
Restructuring liability	39			39
Fiscal 2012 Plan [Member] | NPS [Member]
Composition of Workforce Restructuring Liability [Roll Forward]
Costs expensed in fiscal 2013	0			0
Fiscal 2012 Plan [Member] | MSS [Member]
Composition of Workforce Restructuring Liability [Roll Forward]
Costs expensed in fiscal 2013	(2)			12
Fiscal 2012 Plan [Member] | BSS [Member]
Composition of Workforce Restructuring Liability [Roll Forward]
Costs expensed in fiscal 2013	3			21
Fiscal 2012 Plan [Member] | Corporate [Member]
Composition of Workforce Restructuring Liability [Roll Forward]
Costs expensed in fiscal 2013	0			0
Fiscal 2012 Plan [Member] | Workforce Reductions [Member]
Composition of Workforce Restructuring Liability [Roll Forward]
Restructuring liability				110
Costs expensed in fiscal 2013				33
Less: costs not affecting restructuring liability				(3)	[4]
Cash paid				(104)
Other				(2)	[2]
Restructuring liability	34			34
Fiscal 2012 Plan [Member] | Facility Closing [Member]
Composition of Workforce Restructuring Liability [Roll Forward]
Restructuring liability				9
Costs expensed in fiscal 2013				0
Less: costs not affecting restructuring liability				0	[4]
Cash paid				(4)
Other				0	[2]
Restructuring liability	5			5
Fiscal 2012 Plan [Member] | Pension Benefit Augmentation [Member]
Composition of Workforce Restructuring Liability [Roll Forward]
Costs expensed in fiscal 2013				1
Fiscal 2012 Plan [Member] | Vacation Accrual [Member]
Composition of Workforce Restructuring Liability [Roll Forward]
Costs expensed in fiscal 2013				$ 1

[1] Charges primarily consist of pension benefit augmentations and are recorded as a pension liability.

[2] Foreign currency translation adjustments.

[3] Other direct costs associated with the restructuring program.

[4] Charges primarily consist of $1 million of pension benefit augmentation, which is recorded as a pension liability, and $1 million of additional vacation accrual.