Segment Results (Narrative) (Detail) $ in Millions	3 Months Ended
Mar. 31, 2021 USD ($) segment	Mar. 31, 2020 USD ($)
Segment Reporting [Abstract]
Number of reportable segments \| segment	4
Restructuring gain, net	$ 13.1	$ 1.2
Acquisition-related and integration charges	$ 0.0	$ 5.2

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.

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