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TBG DISCONTINUED OPERATIONS AND RESTRUCTURING - Additional Information (Details) $ in Millions | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2019 salon | Jun. 30, 2021 USD ($) salon | Jun. 30, 2019 USD ($) | Oct. 31, 2017 salon
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Number of stores |  | 43 |  |
Number of stores transferred | 207 |  |  |
Salon lease commitments | $ |  | $ 9.0 |  |
Decrease in lease commitments | $ |  | $ 14.0 |  |
TBG discontinued operations | Mall-Based Salons and International Segment |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Promissory note receivable | $ |  |  | $ 20.7 |
North America | Facility Closing |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Number of stores |  |  |  | 858
United Kingdom | Facility Closing |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Number of stores |  |  |  | 250

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