Financial Instruments - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions	Apr. 03, 2021		Dec. 31, 2020	Apr. 04, 2020	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Cash and cash equivalents	$ 1,375.4	[1]	$ 1,306.7	$ 2,449.1
Restricted cash included in other current assets	1.5			11.2
Restricted cash included in other long-term assets	1.6			1.6
Statement of cash flows - cash, cash equivalents and restricted cash	$ 1,378.5		$ 1,314.5	$ 2,461.9	$ 1,510.4

[1] Unaudited.