Pension and Other Benefit Plans Pension and Other Benefit Plans (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended					0 Months Ended
	Mar. 28, 2014	Mar. 29, 2013 number_of_plans	Mar. 30, 2012	Apr. 01, 2011	Apr. 02, 2010	Jul. 19, 2013	Mar. 26, 2013	Dec. 31, 2012	Dec. 20, 2013	Jul. 01, 2012	Sep. 28, 2012
Defined Benefit Plan Disclosure [Line Items]
Amount of company contribution during the fiscal year		$ 179	$ 213	$ 223
Net unamortized gain (loss), net of tax	0	0	0
Defined Benefit Plan, Effect of Plan Amendment on Benefit Obligation										(28)
Discount rate (in hundredths)										4.00%
Defined Contribution Pension Plans Number Of Shares Of Common Stock Included In Plan Assets		9,378,161
Number of plans within deferred compensation plan		2
The liability included in other long-term liabilities under the plan		129		125
The company's expense under the plan		9		8	8
Employer contribution		4	11	11
ATD [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements						36
Defined Benefit Pension Plan, Liabilities Noncurrent, Decrease from Remeasurement						28
Defined Benefit Plan, Benefit Obligation, Period Increase (Decrease)	1	6	13
US pension plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Employer Discretionary Contribution Amount							80	400
Defined Benefit Plan, Effect of Plan Amendment on Net Periodic Benefit Cost								10
Defined Benefit Plan, Effect of Plan Amendment on Liabilities		379
Discount rate (in hundredths)	4.60%	4.40%						4.00%			4.85%
Contractual termination benefit	0	0	0
Employer contribution	7	591
UK pension plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefit Obligation, Period Increase (Decrease)									443
Discount rate (in hundredths)		4.31%							4.65%
Defined Benefit Plan, Funded Percentage									108.00%
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net unamortized gain (loss), before tax		(265)	(14)	(10)
Net unamortized gain (loss), net of tax		0	15	3
Defined Benefit Plan, Benefit Obligation, Period Increase (Decrease)		3
Contractual termination benefit	17	20	19
Defined Benefit Plan, Amortization of Net Transition Asset (Obligation)		(1)
Estimated prior service cost (gain) amortized from accumulated other comprehensive loss into net periodic benefit cost over the next fiscal year		9
Defined Benefit Plan Percentage Of Plan Assets Made Up Of Us Pension Trust And Uk Pension Plan Assets		91.00%
Foreign Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Employer Discretionary Contribution Amount							20
Discount rate (in hundredths)	4.30%	4.10%
Contractual termination benefit	17	20	20
Employer contribution	81	157
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum	20.00%
Other Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan health care cost trend rate assumed for next fiscal year (in hundredths)		8.80%
Ultimate health care cost trend rate (in hundredths)		4.90%
Net unamortized gain (loss), before tax		1	2	16
Net unamortized gain (loss), net of tax		1	0	10
Discount rate (in hundredths)	4.30%	4.10%
Defined Benefit Plan, Settlements, Benefit Obligation	(8)	0	0
Defined Benefit Plan, Amortization of Net Transition Asset (Obligation)		0
Estimated prior service cost (gain) amortized from accumulated other comprehensive loss into net periodic benefit cost over the next fiscal year		(2)
Employer contribution	$ 6	$ 6
Equity Securities [Member] | US pension plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum		35.00%
Equity Securities [Member] | Foreign Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum	35.00%
Fixed Income Securities [Member] | US pension plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum		30.00%
Fixed Income Securities [Member] | Foreign Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum	45.00%
Corporate Credit [Member] | Foreign Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum	35.00%
Liability Driven Investment Products [Member] | Foreign Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum	10.00%
Alternative Investments [Member] | US pension plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum		35.00%
Key executives [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of plans within deferred compensation plan		1
Maximum amount of compensation that plan participant is allowed to defer of their eligible compensation (in hundreths)		100.00%
Non-employee directors [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of plans within deferred compensation plan		1
Maximum amount of compensation that plan participant is allowed to defer of their eligible compensation (in hundreths)		100.00%