Fair Value Measurements (Details) (USD $) In Millions, unless otherwise specified	Sep. 28, 2013		Mar. 30, 2013
Financial assets recorded at fair value:
Derivative Asset, Fair Value, Gross Asset	$ 24		$ 15
Financial liabilities recorded at fair value:
Derivative Liability, Fair Value, Gross Liability	7		5
Fair Value, Measurements, Recurring [Member]
Financial assets recorded at fair value:
Total financial assets recorded at fair value	58	[1]	237	[1]
Financial liabilities recorded at fair value:
Total financial liabilities recorded at fair value	7	[2]	5	[2]
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Financial assets recorded at fair value:
Derivative Asset, Fair Value, Gross Asset	24	[1]	15	[1]
Financial liabilities recorded at fair value:
Derivative Liability, Fair Value, Gross Liability	7	[2]	5	[2]
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Financial assets recorded at fair value:
Investments recorded at fair value	32	[1]	29	[1]
Foreign Government Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Financial assets recorded at fair value:
Investments recorded at fair value	0	[1]	92	[1]
Corporate Bond Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Financial assets recorded at fair value:
Investments recorded at fair value	0	[1]	82	[1]
Variable Rate Demand Obligation [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Financial assets recorded at fair value:
Investments recorded at fair value	0	[1]	17	[1]
Auction Rate Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Financial assets recorded at fair value:
Investments recorded at fair value	$ 2	[1]	$ 2	[1]

[1] Based on Level 1 measurements, except for auction rate securities and derivative financial instruments, which are based on Level 2 measurements.

[2] Based on Level 2 measurements.