Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Accumulated Other Comprehensive Income (Loss), Net Of Tax [Roll Forward]
Beginning balance				$ (118.2)
OCI before reclassifications				24.2	$ 2.9
Amounts reclassified from AOCI to earnings				(5.5)	(14.9)
Other comprehensive income (loss), net of tax		$ 9.8	$ (6.2)	18.7	(12.0)
Ending balance		(99.5)		(99.5)
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax				(11.2)	4.3
Gain (Loss) on Derivative Used in Net Investment Hedge, after Tax				(34.8)	17.0
Gain (Loss) on Derivative Used in Net Investment Hedge, Tax				(10.8)	5.3
Other Comprehensive Income (Loss), Cash Flow Hedges, Tax				(0.8)	1.8
Foreign Currency Translation Gains (Losses) [Member]
Accumulated Other Comprehensive Income (Loss), Net Of Tax [Roll Forward]
Beginning balance				(130.4)	(118.5)
OCI before reclassifications				30.3	(11.0)
Amounts reclassified from AOCI to earnings				0.0	(4.9)
Other comprehensive income (loss), net of tax				30.3	(15.9)
Ending balance		(100.1)	(134.4)	(100.1)	(134.4)
Net Unrealized Gains (Losses) on Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net Of Tax [Roll Forward]
Beginning balance				18.0	20.2
OCI before reclassifications				(5.8)	13.8
Amounts reclassified from AOCI to earnings				(5.5)	(9.9)
Other comprehensive income (loss), net of tax				(11.3)	3.9
Ending balance		6.7	24.1	6.7	24.1
Net Unrealized Gains (Losses) on Defined Benefit Plans [Member]
Accumulated Other Comprehensive Income (Loss), Net Of Tax [Roll Forward]
Beginning balance				(5.8)	(5.1)
OCI before reclassifications				(0.3)	0.1
Amounts reclassified from AOCI to earnings				0.0	(0.1)
Other comprehensive income (loss), net of tax				(0.3)	0.0
Ending balance		(6.1)	(5.1)	(6.1)	(5.1)
AOCI [Member]
Accumulated Other Comprehensive Income (Loss), Net Of Tax [Roll Forward]
Beginning balance				(118.2)	(103.4)
Other comprehensive income (loss), net of tax	[1]	9.8	(6.2)	18.7	(12.0)
Ending balance		$ (99.5)	$ (115.4)	$ (99.5)	$ (115.4)

[1] ^(b)  Accumulated other comprehensive income (loss).