GOODWILL AND OTHER INTANGIBLE ASSETS - Changes in the Carrying Value of Goodwill (Details) $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 12,639.0
Effect of foreign currency translation	(155.9)
Goodwill, ending balance	12,483.1
U.S. & Canada
Goodwill [Roll Forward]
Goodwill, beginning balance	4,638.6
Effect of foreign currency translation	(1.6)
Goodwill, ending balance	4,637.0
Asia-Pacific
Goodwill [Roll Forward]
Goodwill, beginning balance	562.7
Effect of foreign currency translation	(1.7)
Goodwill, ending balance	561.0
Africa
Goodwill [Roll Forward]
Goodwill, beginning balance	497.7
Effect of foreign currency translation	14.7
Goodwill, ending balance	512.4
Europe
Goodwill [Roll Forward]
Goodwill, beginning balance	3,051.9
Effect of foreign currency translation	(89.9)
Goodwill, ending balance	2,962.0
Latin America
Goodwill [Roll Forward]
Goodwill, beginning balance	966.1
Effect of foreign currency translation	(77.4)
Goodwill, ending balance	888.7
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