Fair Value Narrative (Details) - USD ($)	3 Months Ended
	May 28, 2021	Feb. 26, 2021	May 29, 2020	Feb. 28, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, Long-term and Short-term, Combined Amount	$ 483,700,000	$ 483,900,000
Long-term Debt, Fair Value	566,800,000	568,100,000
Cash and cash equivalents	397,200,000	489,800,000
Restricted Cash	5,300,000	5,800,000	$ 5,900,000	$ 6,100,000
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Debt, Fair Value	566,800,000	568,100,000
Fair Value, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	397,200,000	489,800,000
Restricted Cash	5,300,000	5,800,000
Assets, Fair Value Disclosure	406,100,000	499,300,000
Foreign Currency Contracts, Liability, Fair Value Disclosure	500,000	800,000
Financial and Nonfinancial Liabilities, Fair Value Disclosure	500,000	800,000
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	800,000	1,100,000
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	2,800,000	2,600,000
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		489,800,000
Restricted Cash		5,800,000
Assets, Fair Value Disclosure	402,500,000	495,600,000
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	800,000	1,100,000
Foreign Currency Contracts, Liability, Fair Value Disclosure	500,000	800,000
Financial and Nonfinancial Liabilities, Fair Value Disclosure	500,000	800,000
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	800,000	1,100,000
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	2,800,000	2,600,000
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	2,800,000	$ 2,600,000
Unrealized gain on investments	$ 200,000