GOODWILL AND INTANGIBLES - INDEFINITE LIVED INTANGIBLE ASSETS (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Indefinite-lived Intangible Assets
Indefinite-lived intangible asset	$ 29.3	$ 24.9
Radio spectrum
Indefinite-lived Intangible Assets
Indefinite-lived intangible asset	4.4
MGU \| Trade name
Indefinite-lived Intangible Assets
Indefinite-lived intangible asset	$ 5.2	$ 5.2

Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482665/350-30-50-2

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant