Taxes Based on Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Net discrete tax benefit from decreases in tax reserves, including interest and penalties, as a result of closure of foreign tax audits			$ 13.9
Income before taxes	$ 197.8	$ 179.9	482.0	$ 84.2
Provision for (benefit from) income taxes	$ 46.3	$ 34.6	$ 114.8	$ (58.9)
Effective tax rate (as a percent)	23.40%	19.20%	23.80%	(70.00%)
Tax cuts and jobs act of 2017, change in tax rate, income tax expense (benefits from) on global intangible low-taxed income of our foreign subsidiaries	$ 4.5	$ 4.6	$ 15.0	$ 15.0
Tax benefit from the effective settlement of certain foreign tax audits		$ 8.4		8.4
Foreign structuring and planning transactions				8.0
Reasonably possible decrease in uncertain tax positions, including interest and penalties, primarily as a result of audit settlements and closing tax years during the next 12 months	$ 3.0		$ 3.0
ADPP
Discrete tax benefits related to the effective settlement				179.0
Tax benefits related to the effective settlement of the ADPP on the tax effect of the pretax charge				102.0
Charges associated with termination settlement of the plan, pretax				446.9
Tax benefit related to release of stranded tax effects in AOCI through income statement				$ 77.0