Supplemental Balance Sheet Information - Other non-current liabilities (Details) - USD ($) $ in Thousands	Aug. 28, 2021	Feb. 27, 2021
Inventory Disclosure [Abstract]
Deferred benefit from New Market Tax Credit transactions	$ 15,717	$ 15,717
Retirement plan obligations	7,640	7,730
Deferred compensation plan	13,811	13,507
Deferred tax liabilities	5,850	8,310
DeferredPayrollTaxesLongTermCARESAct	6,789	6,789
Other	16,855	16,430
Total other non-current liabilities	$ 66,662	$ 68,483

Additional Other Liabilities, Noncurrent

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The noncurrent portion of the reserve for accumulated deferred investment tax credits as of the balance sheet date. This is the remaining investment credit, which will reduce the cost of services collected from ratepayers by a ratable portion over the investment's regulatory life.

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Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer).

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Amount of deferred tax liability attributable to taxable temporary differences.

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Amount of expenses incurred but not yet paid classified as other, due after one year or the normal operating cycle, if longer.

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Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as noncurrent.

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