GOODWILL AND OTHER INTANGIBLE ASSETS - Changes in the Carrying Value of Goodwill (Details) $ in Millions	9 Months Ended
	Sep. 30, 2022 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 13,350.1
Adjustments	(43.1)
Other	(7.4)
Effect of foreign currency translation	(613.4)
Goodwill, ending balance	12,686.2
U.S. & Canada
Goodwill [Roll Forward]
Goodwill, beginning balance	4,648.4
Adjustments	0.0
Other	(7.4)
Effect of foreign currency translation	(4.3)
Goodwill, ending balance	4,636.7
Asia-Pacific
Goodwill [Roll Forward]
Goodwill, beginning balance	990.1
Adjustments	0.0
Other	0.0
Effect of foreign currency translation	(85.9)
Goodwill, ending balance	904.2
Africa
Goodwill [Roll Forward]
Goodwill, beginning balance	612.2
Adjustments	0.0
Other	0.0
Effect of foreign currency translation	(78.2)
Goodwill, ending balance	534.0
Europe
Goodwill [Roll Forward]
Goodwill, beginning balance	3,230.4
Adjustments	11.7
Other	0.0
Effect of foreign currency translation	(448.5)
Goodwill, ending balance	2,793.6
Latin America
Goodwill [Roll Forward]
Goodwill, beginning balance	888.6
Adjustments	4.3
Other	0.0
Effect of foreign currency translation	3.5
Goodwill, ending balance	896.4
Data Centers
Goodwill [Roll Forward]
Goodwill, beginning balance	2,978.4
Adjustments	(59.1)
Other	0.0
Effect of foreign currency translation	0.0
Goodwill, ending balance	2,919.3
Services
Goodwill [Roll Forward]
Goodwill, beginning balance	2.0
Adjustments	0.0
Other	0.0
Effect of foreign currency translation	0.0
Goodwill, ending balance	$ 2.0