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LOSS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share [Abstract]
Net loss	$ (76.4)	$ (99.6)
Weighted-average common shares outstanding: basic (both Class A and B) (in shares)	251.7	247.1
Weighted-average common shares outstanding: diluted (both Class A and B) (in shares)	251.7	247.1
Loss per common share: basic (both Class A and B) (in dollars per share)	$ (0.30)	$ (0.40)
Loss per common share: diluted (both Class A and B) (in dollars per share)	$ (0.30)	$ (0.40)

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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=125511455&loc=d3e1448-109256

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