Goodwill - Summary of Change in Carrying Value of Goodwill (Detail) $ in Millions	3 Months Ended
Mar. 31, 2020 USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Beginning balance	$ 7,959.9
2020 acquisitions	8.3
Adjustments to prior acquisitions	(2.9)
Effect of foreign currency translation	(105.6)
Ending balance	$ 7,859.7

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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-Publisher FASB
-Name Accounting Standards Codification
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-Section 45
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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.

+ References

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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.

+ References

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
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