Acquisitions and Divestitures - Schedule of Purchase Price Allocation (Detail) - USD ($) $ in Millions			12 Months Ended
	Dec. 31, 2021	Oct. 01, 2018	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Consideration transferred:
A&S acquisition purchase price adjustment				$ 1.9	$ 29.5
Recognized identifiable assets acquired and liabilities assumed:
Goodwill	$ 1,564.0		$ 1,564.0	$ 1,596.0	1,694.9
Nook Industries, LLC [Member]
Consideration transferred:
Total cash consideration	130.3
Purchase price holdback	8.2
Fair value of consideration transferred	138.5
Recognized identifiable assets acquired and liabilities assumed:
Cash and cash equivalents	5.1		5.1
Receivables	3.7		3.7
Inventory	10.8		10.8
Prepaids and other current assets	0.4		0.4
Property, plant and equipment	12.8		12.8
Deferred tax asset	0.9		0.9
Other non-current assets	5.0		5.0
Intangibles	55.1		55.1
Accounts payable	(2.9)		(2.9)
Accrued payroll	(0.7)		(0.7)
Accrued expenses and other current liabilities	(2.7)		(2.7)
Other long term liability	(4.6)		(4.6)
Total identifiable net assets assumed	82.9		82.9
Goodwill	55.6		55.6
A&S Business [Member]
Consideration transferred:
Total cash consideration			1,003.4
Total equity consideration			1,458.7
A&S acquisition purchase price adjustment			29.5		$ 29.5
Fair value of consideration transferred			2,491.6
Recognized identifiable assets acquired and liabilities assumed:
Cash and cash equivalents	53.5		53.5
Receivables	128.9		128.9
Inventory	85.3		85.3
Prepaids and other current assets	6.7		6.7
Property, plant and equipment	177.0		177.0
Other non-current assets	7.5		7.5
Intangibles	1,454.0	$ 1,454.0	1,454.0
Accounts payable	(98.1)		(98.1)
Accrued payroll	(14.7)		(14.7)
Accrued expenses and other current liabilities	(34.1)		(34.1)
Pension liability and other post employment benefits	(12.3)		(12.3)
Deferred tax liability	(366.9)		(366.9)
Other long term liability	(2.9)		(2.9)
Senior unsecured notes assumed	(400.0)		(400.0)
Total identifiable net assets assumed	983.9		983.9
Goodwill	1,507.7		1,507.7
A&S Business [Member] | At Acquisition Date [Member]
Consideration transferred:
Total cash consideration		1,003.4
Total equity consideration		1,458.7
Fair value of consideration transferred		2,462.1
Recognized identifiable assets acquired and liabilities assumed:
Cash and cash equivalents		54.1
Receivables		129.7
Inventory		89.1
Prepaids and other current assets		6.9
Property, plant and equipment		178.3
Other non-current assets		7.9
Intangibles		1,454.0
Accounts payable		(98.9)
Accrued payroll		(15.2)
Accrued expenses and other current liabilities		(33.7)
Pension liability and other post employment benefits		(12.0)
Deferred tax liability		(355.7)
Other long term liability		(2.6)
Senior unsecured notes assumed		(400.0)
Total identifiable net assets assumed		1,001.9
Goodwill		$ 1,460.2
A&S Business [Member] | Measurement Period Adjustments [Member]
Consideration transferred:
A&S acquisition purchase price adjustment			29.5
Fair value of consideration transferred			29.5
Recognized identifiable assets acquired and liabilities assumed:
Cash and cash equivalents	(0.6)		(0.6)
Receivables	(0.8)		(0.8)
Inventory	(3.8)		(3.8)
Prepaids and other current assets	(0.2)		(0.2)
Property, plant and equipment	(1.3)		(1.3)
Other non-current assets	(0.4)		(0.4)
Accounts payable	0.8		0.8
Accrued payroll	0.5		0.5
Accrued expenses and other current liabilities	(0.4)		(0.4)
Pension liability and other post employment benefits	(0.3)		(0.3)
Deferred tax liability	(11.2)		(11.2)
Other long term liability	(0.3)		(0.3)
Total identifiable net assets assumed	(18.0)		(18.0)
Goodwill	$ 47.5		$ 47.5