Employee Benefit Plan Obligations Multi-Employer Pension Plan (Details) - USD ($) $ in Millions		12 Months Ended
		Feb. 28, 2020	Feb. 22, 2019	Feb. 23, 2018
Multiemployer Plans [Line Items]
Entity Tax Identification Number		38-0819050
Multiemployer Plans, Period Contributions, Significance of Contributions [true false]		false
Multiemployer Plans, Certified Zone Status [Fixed List]	[1]		Red	Red
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan [Fixed List]	[2]	Implemented
Multiemployer Plan, Contributions by Employer			$ 0.2	$ 0.2
Multiemployer Plans, Surcharge [Fixed List]		No
Multiemployer Plan Number		001

[1] The most recent Pension Protection Act Zone Status available in 2019 and 2018 relates to the plan's two most recent fiscal year-ends. The zone status is based on information received from the plan certified by the plan’s actuary. Among other factors, red zone status plans are generally less than 65 percent funded and are considered in critical status.

[2] The FIP/RP Status Pending/Implemented column indicates plans for which a financial improvement plan or a rehabilitation plan is either pending or has been implemented by the trustees of the plan