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Stock-Based Compensation - Schedule of Stock Option Plan Transactions (Details) - Employee stock option - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	May 29, 2021	May 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Roll Forward]
Outstanding at beginning of period (in shares)	361,416
Granted at market (in shares)	1,409,792
Exercises (in shares)	(86,238)
Forfeited or expired (in shares)	(11,598)
Outstanding at end of period (in shares)	1,673,372	361,416
Ending vested and expected to vest (in shares)	1,673,372
Exercisable at end of period (in shares)	230,462
Weighted-Average Exercise Prices
Outstanding at beginning of period (in usd per share)	$ 32.80
Granted at market (in usd per share)	22.9
Exercises (in usd per share)	30.81
Forfeited or expired (in usd per share)	22.53
Outstanding at end of period (in usd per share)	24.63	$ 32.80
Ending vested and expected to vest (in usd per share)	24.63
Exercisable at end of period (in usd per share)	$ 32.55
Aggregate Intrinsic Value
Aggregate intrinsic value at end of period (in millions of usd)	$ 38.8	$ 0.2
Ending vested + expected to vest	38.8
Exercisable at end of period	$ 3.5
Weighted-Average Remaining Contractual Term (Years)
Weighted average remaining contractual term at end of period (in years)	8 years 6 months 21 days	5 years 9 months 18 days
Ending vested + expected to vest	8 years 6 months 21 days
Exercisable at end of period	5 years 4 months 6 days

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For presentations that combine terminations, 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 or that expired.

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Gross number of share options (or share units) granted during the period.

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

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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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 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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