Stock-Based Compensation Plans (Details 2) (USD $) In Thousands, except Per Share data, unless otherwise specified	9 Months Ended	12 Months Ended
Dec. 29, 2012	Mar. 31, 2012
Summary of option plans activity
Number of Shares, Beginning balance	17,788	24,969
Number of Shares, Granted	79	207
Number of Shares, Exercised	(2,043)	(3,622)
Number of Shares, Forfeited/cancelled/expired	(1,466)	(3,766)
Number of Shares, Ending balance	14,358	17,788
Number of Shares, Options exercisable	12,965	15,349
Weighted-Average Exercise Price Per Share, Beginning balance	$ 28.32	$ 29.11
Weighted-Average Exercise Price Per Share, Granted	$ 33.38	$ 34.79
Weighted-Average Exercise Price Per Share, Exercised	$ 24.27	$ 24.70
Weighted-Average Exercise Price Per Share, Forfeited/cancelled/expired	$ 39.62	$ 37.35
Weighted-Average Exercise Price Per Share, Ending balance	$ 27.78	$ 28.32
Weighted-Average Exercise Price Per Share, Options exercisable	$ 27.88	$ 28.78

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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