Revenue, Receivables and Contract Assets and Liabilities Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 29, 2020	Aug. 31, 2019	Aug. 29, 2020	Aug. 31, 2019
Disaggregation of Revenue [Line Items]
Total	$ 319,483	$ 357,058	$ 608,578	$ 712,424
Revenue, Remaining Performance Obligation, Amount	958,794		958,794
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-08-29
Disaggregation of Revenue [Line Items]
Revenue, Remaining Performance Obligation, Amount	471,295		471,295
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-08-29
Disaggregation of Revenue [Line Items]
Revenue, Remaining Performance Obligation, Amount	363,735		363,735
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-08-29
Disaggregation of Revenue [Line Items]
Revenue, Remaining Performance Obligation, Amount	123,764		123,764
Recognized at shipment
Disaggregation of Revenue [Line Items]
Total	133,997	164,336	250,160	319,602
Recognized over time
Disaggregation of Revenue [Line Items]
Total	$ 185,486	$ 192,722	$ 358,418	$ 392,822