Income Taxes Deferred Income Taxes, Income Taxes Receivable, Income Taxes Payable (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Feb. 28, 2014	Feb. 22, 2013
Deferred Tax Assets, Gross [Abstract]
Employee benefit plan obligations	$ 113.5	$ 90.7
Foreign and domestic net operating loss carryforwards	89.8	85.0
Reserves and accruals	23.1	26.5
Tax credit carryforwards	23.6	60.2
Other, net	15.8	6.1
Deferred income tax assets, gross	265.8	268.5
Valuation Allowances	(81.8)	(70.4)
Valuation Allowance, Deferred Tax Asset, Change in Amount	11.4
Net deferred income tax assets	184.0	198.1
Deferred Tax Liabilities [Abstract]
Property, plant and equipment	29.7	31.7
Intangible assets	16.2	14.2
Deferred income tax liabilities	45.9	45.9
Balance Sheet Related Disclosures [Abstract]
Net deferred income taxes	138.1	152.2
Deferred income tax assets - current	56.0	56.2
Deferred income tax assets - non-current	85.1	101.7
Deferred income tax liabilities - current	0.1	0
Deferred income tax liabilities - non-current	2.9	5.7
Unremitted Foreign Earnings [Abstract]
Unremitted foreign earnings permanently invested	144.7
Estimated tax expense of unremitted foreign earnings	15
Current Taxes Payable or Refundable [Abstract]
Income taxes receivable	3.9	4.7
Income taxes payable	2.6	2.7
Foreign locations [Member]
Deferred Tax Assets, Gross [Abstract]
Valuation Allowances	(81.4)
France [Member]
Deferred Tax Assets, Gross [Abstract]
Valuation Allowances	(70.4)
Valuation Allowance, Deferred Tax Asset, Change in Amount	$ 5.9