Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Nov. 22, 2019	Nov. 23, 2018	Nov. 22, 2019	Nov. 23, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Document Period End Date			Nov. 22, 2019
Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax	$ (0.1)	$ (0.2)	$ (0.2)	$ 0.1
Net income	54.9	37.3	133.2	103.4
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning of period	(61.8)	(30.2)	(47.3)	(10.3)
Other comprehensive income (loss) before reclassifications	5.7		(7.4)
Amounts reclassified from accumulated other comprehensive income (loss)	0.2		(1.6)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	5.5		(9.0)
Accumulated Other Comprehensive Income (Loss), End of Period	(56.3)	(38.0)	(56.3)	(38.0)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	1.1	1.1	1.6	2.7
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	6.4	(6.5)	(7.9)	(25.1)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	60.4	$ 29.5	124.2	$ 75.7
Unrealized gain (loss) on investments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning of period	(0.1)		0.0
Other comprehensive income (loss) before reclassifications	(0.1)		0.3
Amounts reclassified from accumulated other comprehensive income (loss)	0.0		(0.5)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(0.1)		(0.2)
Accumulated Other Comprehensive Income (Loss), End of Period	(0.2)		(0.2)
Pension and other post-retirement liability adjustments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning of period	9.2		9.7
Other comprehensive income (loss) before reclassifications	(0.6)		0.2
Amounts reclassified from accumulated other comprehensive income (loss)	0.5		(1.8)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(1.1)		(1.6)
Accumulated Other Comprehensive Income (Loss), End of Period	8.1		8.1
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning of period	(9.2)		(9.6)
Other comprehensive income (loss) before reclassifications	0.0		0.0
Amounts reclassified from accumulated other comprehensive income (loss)	0.3		0.7
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	0.3		0.7
Accumulated Other Comprehensive Income (Loss), End of Period	(8.9)		(8.9)
Foreign currency translation adjustments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning of period	(61.7)		(47.4)
Other comprehensive income (loss) before reclassifications	6.4		(7.9)
Amounts reclassified from accumulated other comprehensive income (loss)	0.0		0.0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	6.4		(7.9)
Accumulated Other Comprehensive Income (Loss), End of Period	$ (55.3)		$ (55.3)