GOODWILL AND OTHER INTANGIBLE ASSETS - Changes in the Carrying Value of Goodwill (Details) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 12,639.0
Effect of foreign currency translation	(82.2)
Goodwill, ending balance	12,556.8
U.S. & Canada
Goodwill [Roll Forward]
Goodwill, beginning balance	4,638.6
Effect of foreign currency translation	(1.1)
Goodwill, ending balance	4,637.5
Asia-Pacific
Goodwill [Roll Forward]
Goodwill, beginning balance	562.7
Effect of foreign currency translation	(1.3)
Goodwill, ending balance	561.4
Africa
Goodwill [Roll Forward]
Goodwill, beginning balance	497.7
Effect of foreign currency translation	1.6
Goodwill, ending balance	499.3
Europe
Goodwill [Roll Forward]
Goodwill, beginning balance	3,051.9
Effect of foreign currency translation	(68.8)
Goodwill, ending balance	2,983.1
Latin America
Goodwill [Roll Forward]
Goodwill, beginning balance	966.1
Effect of foreign currency translation	(12.6)
Goodwill, ending balance	953.5
Data Centers
Goodwill [Roll Forward]
Goodwill, beginning balance	2,920.0
Effect of foreign currency translation	0.0
Goodwill, ending balance	2,920.0
Services
Goodwill [Roll Forward]
Goodwill, beginning balance	2.0
Effect of foreign currency translation	0.0
Goodwill, ending balance	$ 2.0