Financial Instruments - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions	Jul. 03, 2021		Dec. 31, 2020	Jul. 04, 2020	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Cash and cash equivalents	$ 1,401.7	[1]	$ 1,306.7	$ 1,775.5
Restricted cash included in other current assets	1.4			36.0
Restricted cash included in other long-term assets	1.6			1.6
Cash, cash equivalents and restricted cash	$ 1,404.7		$ 1,314.5	$ 1,813.1	$ 1,510.4

[1] Unaudited.