Income Taxes Carryforwards (Details) - USD ($) $ in Millions	Feb. 25, 2022	May 28, 2021	Feb. 26, 2021	Feb. 28, 2020	Feb. 22, 2019
Operating Loss Carryforwards [Line Items]
Liability for Uncertain Tax Positions presented net in underlying deferred tax asset		$ 2.1
Tax effected operating loss carryforwards	$ 40.2		$ 45.2
Tax effected operating loss carryforwards, valuation allowances		(2.4)
Deferred Tax Assets, Operating Loss Carryforwards net of federal tax benefit on State Losses		41.2
Tax effected operating loss carryforwards, net		38.8
Tax credit carryforwards	$ 26.2	26.2	22.0
Tax credit carryforward, valuation allowance		0.0
Tax credit carryforwards, net		26.2
Net operating loss and tax credit carryforwards		65.0
Unrecognized Tax Benefits		2.1	$ 2.3	$ 2.0	$ 2.0
Within One Year [Member]
Operating Loss Carryforwards [Line Items]
Tax effected operating loss carryforwards		0.0
Tax credit carryforwards		0.0
In Five or More Years [Member]
Operating Loss Carryforwards [Line Items]
Tax effected operating loss carryforwards		5.5
Tax credit carryforwards		26.2
No Expiration Date [Member]
Operating Loss Carryforwards [Line Items]
Tax effected operating loss carryforwards		35.7
Tax credit carryforwards		0.0
Federal [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, gross		0.8
Tax effected operating loss carryforwards		0.2
Tax effected operating loss carryforwards, valuation allowances		0.0
Tax effected operating loss carryforwards, net		0.2
Federal [Member] | Within One Year [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, gross		0.0
Tax effected operating loss carryforwards		0.0
Federal [Member] | In Five or More Years [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, gross		0.8
Tax effected operating loss carryforwards		0.2
Federal [Member] | No Expiration Date [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, gross		0.0
Tax effected operating loss carryforwards		0.0
State [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, gross		74.6
Tax effected operating loss carryforwards, valuation allowances		0.0
Deferred Tax Assets, Operating Loss Carryforwards net of federal tax benefit on State Losses		5.0
Tax effected operating loss carryforwards, net		5.0
State [Member] | Within One Year [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, gross		0.0
Tax effected operating loss carryforwards		0.0
State [Member] | In Five or More Years [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, gross		64.8
Tax effected operating loss carryforwards		4.5
State [Member] | No Expiration Date [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, gross		9.8
Tax effected operating loss carryforwards		0.5
International [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, gross		144.1
Tax effected operating loss carryforwards		36.0
Tax effected operating loss carryforwards, valuation allowances		(2.4)
Tax effected operating loss carryforwards, net		33.6
International [Member] | Within One Year [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, gross		0.0
Tax effected operating loss carryforwards		0.0
International [Member] | In Five or More Years [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, gross		3.1
Tax effected operating loss carryforwards		0.8
International [Member] | No Expiration Date [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, gross		141.0
Tax effected operating loss carryforwards		$ 35.2