Income Taxes Carryforwards (Details) - USD ($) $ in Millions	Feb. 24, 2017	Feb. 26, 2016	Feb. 27, 2015	Feb. 22, 2013
Operating Loss Carryforwards [Line Items]
Liability for Uncertain Tax Positions presented net in underlying deferred tax asset	$ 2.6
Tax effected operating loss carryforwards	57.0	$ 69.7
Tax effected operating loss carryforwards, valuation allowances	(7.9)
Deferred Tax Assets, Operating Loss Carryforwards net of federal tax benefit on State Losses	57.0
Tax effected operating loss carryforwards, net	49.1
Tax credit carryforwards	17.4	28.2
Tax credit carryforward, valuation allowance	0.0
Tax credit carryforwards, net	17.4
Net operating loss and tax credit carryforwards	66.5
Unrecognized Tax Benefits	2.8	8.6	$ 8.8	$ 12.7
Liability for Uncertain Tax Positions, Total	0.2	$ 0.2
Within One Year [Member]
Operating Loss Carryforwards [Line Items]
Tax effected operating loss carryforwards	0.8
Tax credit carryforwards	0.0
Between One and Two Years [Member]
Operating Loss Carryforwards [Line Items]
Tax effected operating loss carryforwards	0.7
Tax credit carryforwards	0.0
Between Two and Three Years [Member]
Operating Loss Carryforwards [Line Items]
Tax effected operating loss carryforwards	0.5
Tax credit carryforwards	0.0
Between Three and Four Years [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	1.3
Tax credit carryforwards	17.4
No Expiration Date [Member]
Operating Loss Carryforwards [Line Items]
Tax effected operating loss carryforwards	53.7
Tax credit carryforwards	0.0
Federal [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, gross	0.0
Tax effected operating loss carryforwards	0.0
Tax effected operating loss carryforwards, valuation allowances	0.0
Tax effected operating loss carryforwards, net	0.0
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] | Between One and Two Years [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, gross	0.0
Tax effected operating loss carryforwards	0.0
Federal [Member] | Between Two and Three Years [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, gross	0.0
Tax effected operating loss carryforwards	0.0
Federal [Member] | Between Three and Four Years [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	0.0
Tax effected operating loss carryforwards	0.0
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	23.1
Tax effected operating loss carryforwards, valuation allowances	(0.4)
Deferred Tax Assets, Operating Loss Carryforwards net of federal tax benefit on State Losses	1.3
Tax effected operating loss carryforwards, net	0.9
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] | Between One and Two Years [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, gross	0.0
Tax effected operating loss carryforwards	0.0
State [Member] | Between Two and Three Years [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, gross	0.0
Tax effected operating loss carryforwards	0.0
State [Member] | Between Three and Four Years [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	23.1
Tax effected operating loss carryforwards	1.3
State [Member] | No Expiration Date [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, gross	0.0
Tax effected operating loss carryforwards	0.0
International [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, gross	210.2
Tax effected operating loss carryforwards	55.7
Tax effected operating loss carryforwards, valuation allowances	(7.5)
Tax effected operating loss carryforwards, net	48.2
International [Member] | Within One Year [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, gross	2.4
Tax effected operating loss carryforwards	0.8
International [Member] | Between One and Two Years [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, gross	2.5
Tax effected operating loss carryforwards	0.7
International [Member] | Between Two and Three Years [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, gross	2.4
Tax effected operating loss carryforwards	0.5
International [Member] | Between Three and Four Years [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	0.0
Tax effected operating loss carryforwards	0.0
International [Member] | No Expiration Date [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, gross	202.9
Tax effected operating loss carryforwards	$ 53.7