BUSINESS SEGMENTS - Summary of Geographic Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	$ 10,711.1	$ 9,356.9	$ 8,041.5
Long-lived assets held	50,938.3	53,861.3
U.S. & Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	5,247.4	5,167.5	4,604.9
U.S. & Canada | Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	12.5	11.4	0.3
Long-lived assets held	207.6	227.3
U.S. & Canada | United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	6,001.5	5,179.3	4,604.6
Long-lived assets held	29,275.1	30,306.0
Asia-Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	1,077.0	1,199.1	1,139.4
Asia-Pacific | Australia
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	1.8	1.8	0.0
Long-lived assets held	7.5	6.7
Asia-Pacific | Bangladesh
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	3.9	0.4	0.0
Long-lived assets held	24.6	16.6
Asia-Pacific | India
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	1,065.7	1,196.6	1,139.4
Long-lived assets held	2,452.2	3,349.0
Asia-Pacific | New Zealand
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	0.3	0.0	0.0
Long-lived assets held	37.6	0.0
Asia-Pacific | Philippines
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	5.3	0.3	0.0
Long-lived assets held	30.9	21.6
Africa
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	1,192.5	1,005.5	890.2
Africa | Burkina Faso
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	41.2	44.7	43.9
Long-lived assets held	272.0	296.5
Africa | Ghana
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	144.4	170.5	174.3
Long-lived assets held	393.3	633.0
Africa | Kenya
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	123.1	107.4	97.7
Long-lived assets held	783.8	789.8
Africa | Niger
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	42.1	41.6	40.0
Long-lived assets held	211.3	215.9
Africa | Nigeria
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	477.2	296.5	249.5
Long-lived assets held	747.8	722.1
Africa | South Africa
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	164.8	164.0	128.7
Long-lived assets held	345.5	365.9
Africa | Uganda
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	199.7	180.8	156.1
Long-lived assets held	935.2	926.6
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	735.7	496.2	149.6
Europe | France
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	99.6	98.9	79.4
Long-lived assets held	1,306.9	1,288.0
Europe | Germany
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	320.0	213.5	70.0
Long-lived assets held	5,642.5	6,119.6
Europe | Poland
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	1.0	0.5	0.2
Long-lived assets held	4.9	4.7
Europe | Spain
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	315.1	183.3	0.0
Long-lived assets held	3,027.8	3,204.2
Latin America
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	1,691.9	1,465.4	1,257.4
Latin America | Argentina
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	39.2	31.6	22.1
Long-lived assets held	194.1	188.7
Latin America | Brazil
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	741.9	614.6	506.4
Long-lived assets held	1,908.7	1,864.7
Latin America | Chile
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	91.8	88.0	67.3
Long-lived assets held	606.6	634.3
Latin America | Colombia
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	106.1	107.7	96.1
Long-lived assets held	238.0	301.1
Latin America | Costa Rica
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	23.9	22.8	23.4
Long-lived assets held	111.3	117.9
Latin America | Mexico
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	588.9	524.6	483.0
Long-lived assets held	1,243.2	1,331.1
Latin America | Paraguay
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	15.4	13.5	12.5
Long-lived assets held	93.7	100.3
Latin America | Peru
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	84.7	62.6	$ 46.6
Long-lived assets held	$ 836.2	$ 829.7