Accumulated Other Comprehensive Income (Loss) Reclassifications out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Nov. 26, 2021	Nov. 27, 2020	Nov. 26, 2021	Nov. 27, 2020	Aug. 27, 2021	Feb. 26, 2021	Aug. 28, 2020	Feb. 28, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (63.6)	$ (48.8)	$ (63.6)	$ (48.8)	$ (50.9)	$ (40.0)	$ (56.3)	$ (69.3)
Other comprehensive income (loss) before reclassifications	(13.0)		(24.2)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.3		0.6
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(12.7)		(23.6)
Income Tax Expense (Benefit)	2.4	(6.3)	(3.6)	4.3
Interest Expense	6.5	6.6	19.3	20.7
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.3	0.1	0.6	0.0
Unrealized gain (loss) on investments [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	0.4		0.4		0.5	0.3
Other comprehensive income (loss) before reclassifications	(0.1)		0.1
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.0		0.0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(0.1)		0.1
Pension and other post-retirement liability adjustments [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(5.9)		(5.9)		(6.3)	(6.6)
Other comprehensive income (loss) before reclassifications	0.4		0.8
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.0		(0.1)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	0.4		0.7
Pension and other post-retirement liability adjustments [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.0	(0.2)	(0.1)	(0.7)
Income Tax Expense (Benefit)	0.1	0.1	0.1	0.3
Pension and other post-retirement liability adjustments [Member] | Actuarial losses (gains) [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Income	(0.1)	(0.3)	(0.2)	(0.9)
Pension and other post-retirement liability adjustments [Member] | Prior Service Costs | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Income	0.0	0.0	0.0	(0.1)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(6.9)		(6.9)		(7.2)	(7.6)
Other comprehensive income (loss) before reclassifications	0.0		0.0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.3		0.7
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	0.3		0.7
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.3	0.3	0.7	0.7
Income Tax Expense (Benefit)	(0.1)	(0.1)	(0.3)	(0.3)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest Expense	0.4	$ 0.4	1.0	$ 1.0
Foreign currency translation adjustments [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(51.2)		(51.2)		$ (37.9)	$ (26.1)
Other comprehensive income (loss) before reclassifications	(13.3)		(25.1)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.0		0.0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	$ (13.3)		$ (25.1)