The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Goodwill and Intangibles - Intangibles (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 26, 2022	Jun. 27, 2021	Jun. 26, 2022	Jun. 27, 2021	Dec. 31, 2021
Intangible assets subject to amortization
Gross Carrying Amount	$ 341.4		$ 341.4		$ 343.3
Accumulated Amortization	(256.8)		(256.8)		(250.6)
Net Carrying Amount	84.6		84.6		92.7
Indefinite-lived intangible assets
Indefinite-lived intangible assets	34.8		34.8		35.9
Intangible assets
Gross Carrying Amount	376.2		376.2		379.2
Net Carrying Amount	119.4		119.4		128.6
Aggregate amortization expense for amortized intangible assets	3.0	$ 3.4	6.1	$ 7.3
Patents
Intangible assets subject to amortization
Gross Carrying Amount	16.1		16.1		16.1
Accumulated Amortization	(16.1)		(16.1)		(16.1)
Customer relationships
Intangible assets subject to amortization
Gross Carrying Amount	237.0		237.0		237.5
Accumulated Amortization	(176.8)		(176.8)		(173.1)
Net Carrying Amount	60.2		60.2		64.4
Technology
Intangible assets subject to amortization
Gross Carrying Amount	57.4		57.4		58.6
Accumulated Amortization	(42.7)		(42.7)		(40.7)
Net Carrying Amount	14.7		14.7		17.9
Trade name
Intangible assets subject to amortization
Gross Carrying Amount	26.6		26.6		26.8
Accumulated Amortization	(17.4)		(17.4)		(16.9)
Net Carrying Amount	9.2		9.2		9.9
Other
Intangible assets subject to amortization
Gross Carrying Amount	4.3		4.3		4.3
Accumulated Amortization	(3.8)		(3.8)		(3.8)
Net Carrying Amount	$ 0.5		$ 0.5		$ 0.5