COMMITMENTS AND CONTINGENCIES (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($) category
Network Supply
Contractual Obligation, Fiscal Year Maturity
2020 remaining	$ 369.1
2021	367.1
2022	272.5
2023	85.0
2024	26.6
2025 and beyond	65.6
Contractual obligation	$ 1,185.9
Contractual obligation, number of key categories | category	2
Contract term	1 year
Other
Contractual Obligation, Fiscal Year Maturity
2020 remaining	$ 12.1
2021	6.6
2022	3.7
2023	2.8
2024	2.4
2025 and beyond	7.2
Contractual obligation	$ 34.8