Fair Value Narrative (Details) - USD ($)	6 Months Ended
	Aug. 28, 2020	Feb. 28, 2020	Aug. 23, 2019	Feb. 22, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, Long-term and Short-term, Combined Amount	$ 483,300,000	$ 484,300,000
Long-term Debt, Fair Value	522,600,000	560,000,000.0
Cash and cash equivalents		541,000,000.0
Restricted Cash		6,100,000	$ 4,800,000	$ 3,500,000
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Debt, Fair Value	522,600,000	560,000,000.0
Fair Value, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	515,900,000	541,000,000.0
Restricted Cash	6,500,000	6,100,000
Assets, Fair Value Disclosure	526,800,000	550,400,000
Foreign Currency Contracts, Liability, Fair Value Disclosure	1,500,000	500,000
Financial and Nonfinancial Liabilities, Fair Value Disclosure	1,500,000	500,000
Fair Value, Recurring [Member] | Foreign Exchange Contract [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign Currency Contract, Asset, Fair Value Disclosure	2,400,000	1,200,000
Fair Value, Recurring [Member] | Auction Rate Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities, Fair Value Disclosure	2,000,000.0	2,100,000
Fair Value, Inputs, Level 1 | Fair Value, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	515,900,000	541,000,000.0
Restricted Cash	6,500,000	6,100,000
Assets, Fair Value Disclosure	522,400,000	547,100,000
Foreign Currency Contracts, Liability, Fair Value Disclosure	0	0
Financial and Nonfinancial Liabilities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 | Fair Value, Recurring [Member] | Foreign Exchange Contract [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign Currency Contract, Asset, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 | Fair Value, Recurring [Member] | Auction Rate Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 | Fair Value, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Restricted Cash	0	0
Assets, Fair Value Disclosure	2,400,000	1,200,000
Foreign Currency Contracts, Liability, Fair Value Disclosure	1,500,000	500,000
Financial and Nonfinancial Liabilities, Fair Value Disclosure	1,500,000	500,000
Fair Value, Inputs, Level 2 | Fair Value, Recurring [Member] | Foreign Exchange Contract [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign Currency Contract, Asset, Fair Value Disclosure	2,400,000	1,200,000
Fair Value, Inputs, Level 2 | Fair Value, Recurring [Member] | Auction Rate Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Restricted Cash	0	0
Assets, Fair Value Disclosure	2,000,000.0	2,100,000
Foreign Currency Contracts, Liability, Fair Value Disclosure	0	0
Financial and Nonfinancial Liabilities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Foreign Exchange Contract [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign Currency Contract, Asset, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Auction Rate Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities, Fair Value Disclosure	2,000,000.0	$ 2,100,000
Unrealized gain on investments	$ (100,000)