EQUITY AND CONVERTIBLE PREFERRED STOCK - Narrative (Details)	1 Months Ended					3 Months Ended		12 Months Ended
	Aug. 31, 2025 USD ($)	Feb. 28, 2025 USD ($)	Dec. 31, 2024	Nov. 30, 2024 USD ($)	Oct. 31, 2024 USD ($)	Sep. 30, 2025 USD ($) vote $ / shares shares	Sep. 30, 2024 USD ($)	Jun. 30, 2020 $ / shares shares	Jun. 30, 2025 USD ($) $ / shares shares	Nov. 30, 2023 USD ($)	Nov. 13, 2023 USD ($)	Dec. 31, 2022 USD ($)	Aug. 27, 2021 shares	Mar. 27, 2017 $ / shares shares	Feb. 03, 2016 USD ($)
Class of Stock [Line Items]
Common stock, par value (in dollars per share) | $ / shares						$ 0.01			$ 0.01
Common stock, shares authorized (in shares) | shares						1,250,000,000			1,250,000,000
Common stock, shares outstanding (in shares) | shares						873,900,000			872,300,000
Preferred stock, shares authorized (in shares) | shares						20,000,000.0			20,000,000.0
Preferred stock, shares outstanding (in shares) | shares						1,000,000.0			1,000,000.0
Preferred stock, shares issued (in shares) | shares						1,000,000.0			1,000,000.0
Preferred stock, par value (in dollars per share) | $ / shares						$ 0.01			$ 0.01
Dividends						$ 0
Adjustments to additional paid in capital, change in dividends accrued						0.0	$ 0
Payment of ordinary dividends, common stock, declared during the period						$ 0	0
Authorized repurchase amount										$ 294,000,000.0		$ 196,000,000.0
Derivative, forward repurchase contracts term			1 year
December 2022 Forward Contracts
Class of Stock [Line Items]
Authorized repurchase amount												$ 196,000,000.0
Weighted average interest rate spread						6.80%
November 2023 Forward Contracts
Class of Stock [Line Items]
Authorized repurchase amount										$ 294,000,000.0
Weighted average interest rate spread						7.20%
Share Repurchase Program
Class of Stock [Line Items]
Additional amount authorized to be repurchased											$ 600,000,000.0
Restricted Stock Units and Phantom Units | Other Current Liabilities
Class of Stock [Line Items]
Dividends payable						$ 700,000			$ 700,000
Common Class A
Class of Stock [Line Items]
Common stock, par value (in dollars per share) | $ / shares						$ 0.01
Votes per share | vote						1
Common stock, shares authorized (in shares) | shares						1,250,000,000
Common stock, shares outstanding (in shares) | shares						873,900,000
Cash payments to counterparties	$ 53,900,000	$ 191,100,000		$ 61,800,000	$ 61,800,000
Common Class A | Incremental Repurchase Program
Class of Stock [Line Items]
Authorized repurchase amount															$ 500,000,000.0
Common Class A | Share Repurchase Program
Class of Stock [Line Items]
Share repurchase program, remaining authorized repurchase amount						$ 796,800,000
Common Class A | JAB Beauty B.V
Class of Stock [Line Items]
Parent ownership percentage						54.00%
Series A Preferred Stock
Class of Stock [Line Items]
Votes per share | vote						0
Preferred stock, shares authorized (in shares) | shares						1,000,000
Preferred stock, shares outstanding (in shares) | shares						1,000,000
Preferred stock, shares issued (in shares) | shares						1,000,000								1,000,000
Preferred stock, par value (in dollars per share) | $ / shares						$ 0.01
Preferred stock, redemption price (in dollars per share) | $ / shares														$ 0.01
Series B Preferred Stock
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share) | $ / shares								$ 0.01
Sale of stock, shares authorized (in shares) | shares								1,000,000
Sale of stock, price per share (in dollars per share) | $ / shares								$ 1,000
Preferred stock, dividend rate						9.00%
Dividends declared						$ 3,300,000	3,300,000
Preferred stock dividends declared and paid during the period						3,300,000	$ 3,300,000
Dividends payable						$ 3,300,000			$ 3,300,000
Series B Preferred Stock | KKR | HFS
Class of Stock [Line Items]
Preferred stock, shares issued (in shares) | shares													146,057