ACQUISITIONS - SUMMARY OF ALLOCATION OF THE PURCHASE PRICE (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($) site	Dec. 31, 2019 USD ($)
Asset Acquisition:
Goodwill	$ 5,948.8	$ 6,178.3
Tenant-related intangible assets | Maximum
Asset Acquisition:
Estimated useful lives (in years)	20 years
Network location intangible assets | Maximum
Asset Acquisition:
Estimated useful lives (in years)	20 years
Acquisitions 2020
Asset Acquisition:
Current assets	$ 0.3
Property and equipment	25.9
Other non-current assets	10.6
Current liabilities	(0.9)
Deferred tax liability	0.0
Other non-current liabilities	(4.6)
Net assets acquired	50.9
Goodwill	0.0
Fair value of net assets acquired	50.9
Debt assumed	0.0
Purchase price	$ 50.9
Acquisitions 2020 | Peru
Asset Acquisition:
Number of sites acquired | site	7
Acquisitions 2020 | Tenant-related intangible assets
Asset Acquisition:
Intangible assets	$ 14.1
Acquisitions 2020 | Tenant-related intangible assets | Maximum
Asset Acquisition:
Estimated useful lives (in years)	20 years
Acquisitions 2020 | Network location intangible assets
Asset Acquisition:
Intangible assets	$ 4.2
Acquisitions 2020 | Other intangible assets
Asset Acquisition:
Intangible assets	$ 1.3