Additional Financial Information (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019	Mar. 28, 2020	Mar. 30, 2019
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]
Cash and Cash Equivalents	$ 2,012.0		$ 2,012.0		$ 1,620.4
Restricted cash, current	1.5		1.5		1.4
Restricted cash, noncurrent	8.3		8.3		8.0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	2,021.8	$ 563.3	2,021.8	$ 563.3	$ 1,629.8	$ 626.5
Cash Interest and Taxes
Cash paid for interest	7.8	5.4	11.1	7.8
Cash paid for income taxes	$ 46.8	$ 59.8	27.9	82.1
Additional Financial Information (Textual) [Abstract]
Right-of-use asset obtained in exchange for operating lease liability			26.6	263.6
Right-of-use asset obtained in exchange for finance lease liability			0.9	64.0
Capital expenditures incurred but not yet paid			$ 27.4	$ 55.3
Conversion of Stock, Shares Converted		0.5		1.0