Goodwill - Summary of Change in Carrying Value of Goodwill (Detail) $ in Millions	6 Months Ended
Jun. 30, 2022 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Beginning balance	$ 8,045.5
Acquisitions completed in the current year	1,002.0
Adjustments to prior acquisitions	0.3
Effect of foreign currency translation	(181.0)
Ending balance	$ 8,866.8

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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