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Stock-Based Compensation Plans (Summary Of Share-Based Award Activity) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended	12 Months Ended
	Feb. 23, 2019	May 26, 2018
Stock-Based Compensation Plans [Abstract]
Beginning balance, Number of Shares Under Option	6,869
Granted, at fair market value, Number of Shares Under Option	1,290
Exercised, Number of Shares Under Option	(1,392)
Forfeited, Number of Shares Under Option	(193)
Expired, Number of Shares Under Option	(404)
Ending balance, Number of Shares Under Option	6,170	6,869
Exercisable, Number of Shares Under Option	3,644
Vested and expected to vest, Number of Shares Under Option	5,858
Beginning balance, Weighted Average Exercise Price (per share)	$ 15.10
Granted, at fair market value, Weighted Average Exercise Price (per share)	18.96
Exercised, Weighted Average Exercise Price (per share)	13.74
Forfeited, Weighted Average Exercise Price (per share)	15.65
Expired, Weighted Average Exercise Price (per share)	18.89
Ending balance, Weighted Average Exercise Price (per share)	15.95	$ 15.10
Exercisable, Weighted Average Exercise Price (per share)	15.10
Vested and expected to vest, Weighted Average Exercise Price (per share)	$ 15.83
Weighted Average Remaining Contractual Life (in years)	6 years 3 months 15 days	5 years 6 months
Exercisable, Weighted Average Remaining Contractual Life (in years)	4 years 6 months 15 days
Vested and expected to vest, Weighted Average Remaining Contractual Life (in years)	6 years 1 month 17 days
Ending balance, Aggregate Intrinsic Value	$ 12,956	$ 12,310
Exercisable, Aggregate Intrinsic Value	10,205
Vested and expected to vest, Aggregate Intrinsic Value	$ 12,794

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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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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Number of fully vested and expected to vest exercisable options that may be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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