Segment Reporting - Reconciliation of Segment Earnings to Consolidated Income Before Provision for Income Taxes and Equity (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jul. 04, 2020	Jul. 03, 2021	Jul. 04, 2020
Segment Reporting [Abstract]
Segment earnings	$ 205.5	$ (294.3)	$ 512.9	$ (120.9)
Interest expense	22.3	27.2	44.6	51.6
Other (income) expense, net	(46.1)	(3.2)	(39.8)	37.3
Consolidated income (loss) before provision (benefit) for income taxes and equity in net income of affiliates	$ 229.3	$ (318.3)	$ 508.1	$ (209.8)