Stock-Based Compensation Plans (Details Textual) (USD $)	9 Months Ended		12 Months Ended	3 Months Ended		9 Months Ended							3 Months Ended		9 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Mar. 31, 2012	Dec. 29, 2012 Employee Stock Option [Member]	Dec. 31, 2011 Employee Stock Option [Member]	Dec. 29, 2012 Employee Stock Option [Member]	Dec. 31, 2011 Employee Stock Option [Member]	Dec. 29, 2012 Employee Stock Purchase Plan [Member]	Dec. 31, 2011 Employee Stock Purchase Plan [Member]	Aug. 08, 2012 Employee Stock Purchase Plan [Member]	Dec. 29, 2012 Equity Plan 2007 [Member]	Aug. 08, 2012 Equity Plan 2007 [Member]	Dec. 29, 2012 Restricted Stock Units [Member]	Dec. 31, 2011 Restricted Stock Units [Member]	Dec. 29, 2012 Restricted Stock Units [Member]	Dec. 31, 2011 Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term				4.9	5.2	4.9	5.2	1.25	1.25
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate				28.00%	35.00%	28.00%	32.00%	29.00%	29.00%
Stock Issued During Period, Shares, Employee Stock Purchase Plans								521,000	501,000
Stock Issued During Period, Value, Employee Stock Purchase Plan								$ 14,100,000	$ 13,300,000
Tax Benefit from Stock Options Exercised	5,354,000	7,039,000
Weighted average fair value per share of stock options granted				$ 5.98	$ 7.95	$ 6.20	$ 7.89
Weighted average fair value per share of RSUs and stock purchase rights granted	$ 31.15		$ 33.69					$ 8.53	$ 9.37				$ 31.47	$ 29.47	$ 31.15	$ 33.89
Shares available for grant								9,600,000			16,400,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value				$ 8,600,000	$ 3,900,000	$ 20,300,000	$ 22,200,000
Authorized number of shares reserved for issuance										2,000,000		3,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures	79,000		207,000
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate				0.70%	0.90%	0.70%	1.40%	0.20%	0.20%				0.30%	0.40%	0.40%	0.70%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate				2.60%	2.40%	2.60%	2.30%	2.70%	2.40%				2.60%	2.40%	2.70%	2.10%