Fair Value Measurements (Details 2) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cumulative adjustment from adoption of new accounting standards				$ (164.5)
Property, Plant and Equipment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value as of Impairment Date	$ 0.0	$ 5.5	$ 0.0	5.5
Impairment of Long-Lived Assets	10.8	1.7	10.8	2.6
Operating Lease, Right-of-Use Asset [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value as of Impairment Date	33.9	19.2	33.9	112.1
Impairment of Long-Lived Assets	$ 20.2	$ 4.4	$ 22.3	229.8
Accounting Standards Update 2016-02 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cumulative adjustment from adoption of new accounting standards				169.4
Accounting Standards Update 2016-02 [Member] | Operating Lease, Right-of-Use Asset [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of Long-Lived Assets				$ 225.1