Restructuring - Summary of Liabilities Recognized Related to Restructuring Plan (Detail) - 2019 Restructuring Plan [Member] $ in Millions	12 Months Ended
Dec. 31, 2019 USD ($)
Restructuring Cost And Reserve [Line Items]
Additions	$ 36.3
Cash payments	(9.0)
Ending Balance	27.3
Employee Termination Benefits [Member]
Restructuring Cost And Reserve [Line Items]
Additions	23.2
Ending Balance	23.2
Other Restructuring [Member]
Restructuring Cost And Reserve [Line Items]
Additions	13.1
Cash payments	(9.0)
Ending Balance	$ 4.1

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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