Income Taxes Deferred Income Taxes, Income Taxes Receivable, Income Taxes Payable (Details) - USD ($) $ in Millions		12 Months Ended
		Feb. 25, 2022	Feb. 26, 2021	Feb. 28, 2020	May 28, 2021
Deferred Tax Assets, Gross [Abstract]
Employee benefit plan obligations		$ 51.6	$ 57.6
Deferred Tax Asset, Operating Lease Obligations		58.4	62.7
Foreign and domestic net operating loss carryforwards		40.2	45.2
Reserves and accruals		16.1	15.1
Tax credit carryforwards		26.2	22.0		$ 26.2
Other, net		14.7	15.0
Deferred income tax assets, gross		207.2	217.6
Valuation Allowances		(3.7)	(6.6)
Valuation allowance provisions and adjustments	[1]	(2.7)	0.4	$ (1.3)
Net deferred income tax assets		203.5	211.0
Deferred Income Tax Liability		54.1	57.4
Deferred Tax Liabilities [Abstract]
Property, plant and equipment		26.5	32.3
Intangible assets		11.7	13.0
Deferred Tax Liabilities, Prepaid Expenses		0.0	2.0
Deferred income tax liabilities		92.3	104.7
Balance Sheet Related Disclosures [Abstract]
Net deferred income taxes		111.2	106.3
Deferred income taxes		121.2	113.3
Deferred income taxes		10.0	7.0
Current Taxes Payable or Refundable [Abstract]
Income taxes receivable		$ 41.7	49.5		41.7
Income taxes payable			$ 7.4		$ 7.6

[1] The valuation allowance provisions and adjustments are based on current year activity, which are further detailed below.