Goodwill - Additional Information (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Indefinite Lived Intangible Assets By Major Class [Line Items]
Reporting units with goodwill assigned to them	3
Goodwill impairment	$ 612.0
Goodwill	8,951.2	$ 9,599.7
Dental [Member]
Indefinite Lived Intangible Assets By Major Class [Line Items]
Goodwill impairment	142.0
Goodwill	253.5
EMEA [Member]
Indefinite Lived Intangible Assets By Major Class [Line Items]
Goodwill impairment	470.0
Goodwill	288.4	$ 749.8
EMEA [Member] | Reportable Segment Change [Member]
Indefinite Lived Intangible Assets By Major Class [Line Items]
Goodwill impairment	$ 470.0
America CMFT [Member]
Indefinite Lived Intangible Assets By Major Class [Line Items]
Reporting units with goodwill assigned to them	2
Percentage of fair value in excess of carrying amount	5.00%