Retirement Plans - Assumptions and assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 04, 2023	Feb. 26, 2022	Feb. 27, 2021
Significant actuarial assumptions used for all defined benefit plans to determine the benefit obligation
Expected long-term rate of return on plan assets	5.00%	5.50%	6.00%
Asset allocations
Actual allocation (as a percent)	100.00%	100.00%
Target allocation of plan assets
Target allocation (as a percent)	100.00%
Equity Securities
Asset allocations
Actual allocation (as a percent)	30.00%	30.00%
U.S. equities
Target allocation of plan assets
Target allocation (as a percent)	30.00%
Fixed Income
Asset allocations
Actual allocation (as a percent)	59.00%	57.00%
Target allocation of plan assets
Target allocation (as a percent)	62.00%
Other
Asset allocations
Actual allocation (as a percent)	11.00%	13.00%
Target allocation of plan assets
Target allocation (as a percent)	8.00%
Defined Benefit Pension Plan
Significant actuarial assumptions used for all defined benefit plans to determine the benefit obligation
Discount rate (as a percent)	5.00%	3.25%	3.00%
Rate of increase in future compensation levels (as a percent)
Expected long-term rate of return on plan assets	6.50%	5.00%	5.50%
Weighted average assumptions used to determine net cost
Discount rate (as a percent)	3.25%	3.00%	2.75%
Rate of increase in future compensation levels (as a percent)
Expected long-term rate of return on plan assets (as a percent)	5.00%	5.50%	6.00%
Defined benefit plans estimated future employer contributions
Expected employer contribution during next fiscal year	$ 0