Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss) Rollforward (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 25, 2022	Feb. 26, 2021	Feb. 28, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss)	$ (40.0)	$ (69.3)	$ (47.3)
Other comprehensive income (loss) before reclassifications	(11.3)	28.7
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(0.7)	(0.6)
Total other comprehensive income (loss), net	(10.6)	29.3	(22.0)
Accumulated other comprehensive income (loss)	(50.6)	(40.0)	(69.3)
Unrealized gain on investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss)	0.3	(0.1)
Other comprehensive income (loss) before reclassifications	0.0	0.4
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.0	0.0
Total other comprehensive income (loss), net	0.0	0.4
Accumulated other comprehensive income (loss)	0.3	0.3	(0.1)
Minimum pension liability [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss)	(6.6)	(3.1)
Other comprehensive income (loss) before reclassifications	12.0	(2.7)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.2	0.8
Total other comprehensive income (loss), net	11.8	(3.5)
Accumulated other comprehensive income (loss)	5.2	(6.6)	(3.1)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss)	(7.6)	(8.6)
Other comprehensive income (loss) before reclassifications	0.0	0.0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(0.9)	(1.0)
Total other comprehensive income (loss), net	0.9	1.0
Accumulated other comprehensive income (loss)	(6.7)	(7.6)	(8.6)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss)	(26.1)	(57.5)
Other comprehensive income (loss) before reclassifications	(23.3)	31.0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.0	(0.4)
Total other comprehensive income (loss), net	(23.3)	31.4
Accumulated other comprehensive income (loss)	$ (49.4)	$ (26.1)	$ (57.5)