Financial Instruments and Derivative Instruments - Fair Value Measured on Recurring Basis Using Significant Unobservable Inputs (Level 3) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Jun. 27, 2021	Sep. 26, 2021	Dec. 31, 2020	Sep. 27, 2020
Significant Unobservable Inputs (Level 3)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net earnings adjustments	$ 0.8
Balance at the ending of the period		$ 3.7
Significant Unobservable Inputs (Level 3) | Minimum
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Liability recorded at acquisition date fair value		0.0
Significant Unobservable Inputs (Level 3) | Maximum
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Liability recorded at acquisition date fair value		4.4
Fair value measured on a recurring basis
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Liability recorded at acquisition date fair value		3.7	$ 3.2
Fair value measured on a recurring basis | Significant Unobservable Inputs (Level 3)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at the beginning of the period		3.2
Net earnings adjustments		0.8
Comprehensive income		(0.3)
Balance at the ending of the period		3.7
Liability recorded at acquisition date fair value		$ 3.7	$ 3.2
AVG | Significant Unobservable Inputs (Level 3)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Liability recorded at acquisition date fair value				$ 2.8