Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 4
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=118951113&loc=d3e6812-107765

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_CashSurrenderValueOfLifeInsurance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Company-Owned Life Insurance (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 26, 2021	Feb. 28, 2020	Feb. 22, 2019
Company Owned Life Insurance [Line Items]
Company-owned life insurance ("COLI")	$ 169.5	$ 160.0
Operating Expense [Member]
Company Owned Life Insurance [Line Items]
COLI Investment Income	12.3	6.6	$ 7.5
Whole Life [Member]
Company Owned Life Insurance [Line Items]
Company-owned life insurance ("COLI")	111.3	110.3
Variable Life [Member]
Company Owned Life Insurance [Line Items]
Company-owned life insurance ("COLI")	$ 58.2	$ 49.7