Share-Based Compensation Plans And Other Incentive Plans (Narrative) (Details) (USD $) Share data in Millions, unless otherwise specified	3 Months Ended		9 Months Ended				6 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012 Restricted Stock Units (RSUs) [Member]	Sep. 29, 2012 Stock Options [Member]	Sep. 29, 2012 Employee Stock Purchase Plan [Member]	Mar. 31, 2012 Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs granted in period					1.5
Stock options granted in period						1.2
Share-based compensation expense, net of forfeitures	$ 44,000,000	$ 45,000,000	$ 139,000,000	$ 123,000,000	$ 65,000,000	$ 11,000,000
Weighted average vesting period			3 years
Maximum purchase percentage of eligible compensation (in percent)							20.00%	10.00%
Maximum limit for purchase of stock under ESPP							$ 25,000