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COMMITMENTS AND CONTINGENCIES (Details)
$ in Millions
12 Months Ended
Dec. 31, 2019
USD ($)
category
Network Supply  
Network Supply and Other  
2020 $ 485.9
2021 320.0
2022 251.3
2023 28.2
2024 24.2
2025 and beyond 53.6
Contractual obligation $ 1,163.2
Number of key categories | category 2
Contractual obligation, period 1 year
Other  
Network Supply and Other  
2020 $ 11.8
2021 6.4
2022 3.9
2023 2.9
2024 2.4
2025 and beyond 7.2
Contractual obligation $ 34.6