BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Disaggregation of Revenue [Line Items]
Total non-lease revenue	$ 202.5	$ 246.4	$ 629.7	$ 716.1
Property lease revenue	2,582.9	2,471.0	7,642.3	7,191.0
Total revenue	2,785.4	2,717.4	8,272.0	7,907.1
U.S. & Canada
Disaggregation of Revenue [Line Items]
Total non-lease revenue	125.2	174.2	398.5	495.5
Property lease revenue	1,201.4	1,245.7	3,593.0	3,703.9
Total revenue	1,326.6	1,419.9	3,991.5	4,199.4
Africa & APAC
Disaggregation of Revenue [Line Items]
Total non-lease revenue	3.1	3.9	9.4	19.3
Property lease revenue	424.8	366.9	1,212.4	1,021.4
Total revenue	427.9	370.8	1,221.8	1,040.7
Europe
Disaggregation of Revenue [Line Items]
Total non-lease revenue	3.8	0.9	10.8	7.1
Property lease revenue	254.1	242.7	767.2	682.2
Total revenue	257.9	243.6	778.0	689.3
Latin America
Disaggregation of Revenue [Line Items]
Total non-lease revenue	28.2	28.7	85.4	82.8
Property lease revenue	431.8	387.8	1,296.3	1,122.3
Total revenue	460.0	416.5	1,381.7	1,205.1
Data Centers
Disaggregation of Revenue [Line Items]
Total non-lease revenue	42.2	38.7	125.6	111.4
Property lease revenue	270.8	227.9	773.4	661.2
Total revenue	313.0	266.6	899.0	772.6
Non-lease property revenue
Disaggregation of Revenue [Line Items]
Total non-lease revenue	151.1	145.3	449.4	440.9
Non-lease property revenue \| U.S. & Canada
Disaggregation of Revenue [Line Items]
Total non-lease revenue	73.8	73.1	218.2	220.3
Non-lease property revenue \| Africa & APAC
Disaggregation of Revenue [Line Items]
Total non-lease revenue	3.1	3.9	9.4	19.3
Non-lease property revenue \| Europe
Disaggregation of Revenue [Line Items]
Total non-lease revenue	3.8	0.9	10.8	7.1
Non-lease property revenue \| Latin America
Disaggregation of Revenue [Line Items]
Total non-lease revenue	28.2	28.7	85.4	82.8
Non-lease property revenue \| Data Centers
Disaggregation of Revenue [Line Items]
Total non-lease revenue	42.2	38.7	125.6	111.4
Services revenue
Disaggregation of Revenue [Line Items]
Total non-lease revenue	51.4	101.1	180.3	275.2
Services revenue \| U.S. & Canada
Disaggregation of Revenue [Line Items]
Total non-lease revenue	51.4	101.1	180.3	275.2
Services revenue \| Africa & APAC
Disaggregation of Revenue [Line Items]
Total non-lease revenue	0.0	0.0	0.0	0.0
Services revenue \| Europe
Disaggregation of Revenue [Line Items]
Total non-lease revenue	0.0	0.0	0.0	0.0
Services revenue \| Latin America
Disaggregation of Revenue [Line Items]
Total non-lease revenue	0.0	0.0	0.0	0.0
Services revenue \| Data Centers
Disaggregation of Revenue [Line Items]
Total non-lease revenue	$ 0.0	$ 0.0	$ 0.0	$ 0.0