Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Aug. 26, 2022	Aug. 27, 2021	Aug. 26, 2022	Aug. 27, 2021
Computation of Basic and Diluted Earnings Per Share [Line Items]
Net income (loss)	$ 19.6	$ 24.7	$ 8.2	$ (3.4)
Impact of participating securities	$ (0.7)	$ (0.6)	$ (0.3)	$ 0.1
Adjustment for participating securities (in millions)	(4,400)	(3,100)	(4,200)	(2,900)
Net income used in calculating earnings per share	$ 18.9	$ 24.1	$ 7.9	$ (3.3)
Basic	$ 0.17	$ 0.21	$ 0.07	$ (0.03)
Diluted	$ 0.17	$ 0.21	$ 0.07	$ (0.03)
Anti-dilutive performance units excluded from computation of diluted earnings per share (in millions)				500
Including
Computation of Basic and Diluted Earnings Per Share [Line Items]
Weighted Average Number of Shares Outstanding, Basic	117,200	118,000	117,000	118,100
Weighted Average Number of Shares Outstanding, Diluted	117,700	118,600	117,500	118,100
Excluding
Computation of Basic and Diluted Earnings Per Share [Line Items]
Weighted Average Number of Shares Outstanding, Basic	112,800	114,900	112,800	115,200
Weighted Average Number of Shares Outstanding, Diluted	113,300	115,500	113,300	115,200