Revenue, Receivables and Contract Assets and Liabilities Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 28, 2020	Nov. 30, 2019	Nov. 28, 2020	Nov. 30, 2019
Disaggregation of Revenue [Line Items]
Total	$ 313,583	$ 337,916	$ 922,162	$ 1,050,340
Revenue, Remaining Performance Obligation, Amount	901,628		901,628
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-11-28
Disaggregation of Revenue [Line Items]
Revenue, Remaining Performance Obligation, Amount	498,623		498,623
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-11-28
Disaggregation of Revenue [Line Items]
Revenue, Remaining Performance Obligation, Amount	331,219		331,219
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-11-28
Disaggregation of Revenue [Line Items]
Revenue, Remaining Performance Obligation, Amount	71,786		71,786
Recognized at shipment
Disaggregation of Revenue [Line Items]
Total	129,132	153,093	379,292	472,695
Recognized over time
Disaggregation of Revenue [Line Items]
Total	$ 184,451	$ 184,823	$ 542,870	$ 577,645