Financial Instruments - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions	Oct. 02, 2021		Dec. 31, 2020	Oct. 03, 2020	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Cash and cash equivalents	$ 1,099.1	[1]	$ 1,306.7	$ 1,250.4
Restricted cash included in other current assets	1.4			5.1
Restricted cash included in other long-term assets	1.6			2.7
Cash, cash equivalents and restricted cash	$ 1,102.1		$ 1,314.5	$ 1,258.2	$ 1,510.4

[1] Unaudited.