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FINANCING ARRANGEMENTS - Senior Secured Notes (Details)				1 Months Ended	3 Months Ended		5 Months Ended	6 Months Ended
	Jun. 26, 2025 USD ($)	Nov. 01, 2024 USD ($)	Sep. 29, 2023 USD ($)	Apr. 30, 2025 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	May 31, 2024 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Jun. 26, 2025 EUR (€)	Dec. 31, 2024 USD ($)
Debt Instrument [Line Items]
Loss on extinguishment of debt					$ (178,000,000)	$ (12,000,000)		$ (178,000,000)	$ (23,000,000)
Remaining quarterly amortization payments		$ 400,000,000
Total long-term debt and other					21,738,000,000			$ 21,738,000,000			$ 21,616,000,000
Secured Notes
Debt Instrument [Line Items]
Redemption price percentage to change in control (as a percent)								101.00%
Loss on extinguishment of debt				$ (191,000,000)				$ 25,000,000
Debt issuance costs, net					60,000,000			$ 60,000,000
Unsecured Notes
Debt Instrument [Line Items]
Redemption price percentage to change in control (as a percent)								101.00%
Loss on extinguishment of debt							$ (23,000,000)
2032 Senior Secured Notes | Secured Notes
Debt Instrument [Line Items]
Redemption price percentage to change in control (as a percent)								100.00%
Collateral amount					$ 50,000,000			$ 50,000,000
Existing Senior Secured Notes | Secured Notes
Debt Instrument [Line Items]
Redemption price percentage to change in control (as a percent)								101.00%
8.375% Senior Notes Due October 2028 | Secured Notes | Bausch + Lomb
Debt Instrument [Line Items]
Redemption price percentage to change in control (as a percent)								101.00%
Stated interest rate on debt (as a percent)			8.375%		8.375%			8.375%
Principal amount			$ 1,400,000,000
Total long-term debt and other					$ 1,385,000,000			$ 1,385,000,000			1,382,000,000
8.375% Senior Notes Due October 2028 | Secured Notes | Bausch + Lomb | Debt Instrument, Redemption, Period Three
Debt Instrument [Line Items]
Redemption price (as a percent)								108.375%
8.375% Senior Notes Due October 2028 | Secured Notes | Bausch + Lomb | Maximum | Debt Instrument, Redemption, Period Three
Debt Instrument [Line Items]
Maximum percentage of principal amount that can be redeemed								40.00%
5.500% Senior Notes Due November 2025 | Secured Notes
Debt Instrument [Line Items]
Stated interest rate on debt (as a percent)					5.50%			5.50%
Total long-term debt and other					$ 0			$ 0			1,678,000,000
6.125% Senior Notes Due February 2027 | Secured Notes
Debt Instrument [Line Items]
Stated interest rate on debt (as a percent)					6.125%			6.125%
Total long-term debt and other					$ 0			$ 0			993,000,000
5.75% Senior Secured Notes due 2027 | Secured Notes
Debt Instrument [Line Items]
Stated interest rate on debt (as a percent)					5.75%			5.75%
Total long-term debt and other					$ 0			$ 0			498,000,000
10.00% Secured Notes | Secured Notes
Debt Instrument [Line Items]
Stated interest rate on debt (as a percent)					10.00%			10.00%
Total long-term debt and other					$ 4,339,000,000			$ 4,339,000,000			0
Term Loan B Due January 2031 | Bausch + Lomb
Debt Instrument [Line Items]
Remaining quarterly amortization payments	$ 800,000,000
Remaining borrowings					763,000,000			763,000,000
Revolving Credit Facility Due June 2030 | Revolving Credit Facility
Debt Instrument [Line Items]
Commitment fee (as a percent)	0.25%
Revolving Credit Facility Due June 2030 | Revolving Credit Facility | Base Rate
Debt Instrument [Line Items]
Variable rate, floor (as a percent)	1.00%
Revolving Credit Facility Due June 2030 | Maximum | Revolving Credit Facility | Base Rate
Debt Instrument [Line Items]
Variable rate (as a percent)	1.75%
Revolving Credit Facility Due June 2030 | Maximum | Revolving Credit Facility | SOFR, EURIBOR, and SONIA Rate
Debt Instrument [Line Items]
Variable rate (as a percent)	2.75%
Revolving Credit Facility Due June 2030 | Minimum | Revolving Credit Facility | Base Rate
Debt Instrument [Line Items]
Variable rate (as a percent)	0.75%
Revolving Credit Facility Due June 2030 | Minimum | Revolving Credit Facility | SOFR, EURIBOR, and SONIA Rate
Debt Instrument [Line Items]
Variable rate (as a percent)	1.75%
Revolving Credit Facility Due June 2030 | Bausch + Lomb | Revolving Credit Facility
Debt Instrument [Line Items]
Total long-term debt and other					$ 0			$ 0			0
Term Loan Due September 2028
Debt Instrument [Line Items]
Annual amortization rate (as a percent)										1.00%
Quarterly amortization payments	$ 5,000,000
Term Loan Due September 2028 | Base Rate
Debt Instrument [Line Items]
Variable rate (as a percent)	3.00%
Term Loan Due September 2028 | SOFR Rate
Debt Instrument [Line Items]
Variable rate (as a percent)	4.00%
Term Loan Due September 2028 | Minimum | Base Rate
Debt Instrument [Line Items]
Variable rate (as a percent)	1.00%
Term Loan Due September 2028 | Minimum | SOFR Rate
Debt Instrument [Line Items]
Variable rate (as a percent)	0.00%
Term Loan Due January 2031
Debt Instrument [Line Items]
Annual amortization rate (as a percent)										1.00%
Quarterly amortization payments	$ 23,000,000
Term Loan Due January 2031 | Base Rate
Debt Instrument [Line Items]
Variable rate (as a percent)	3.25%
Term Loan Due January 2031 | SOFR Rate
Debt Instrument [Line Items]
Variable rate (as a percent)	4.25%
Term Loan Due January 2031 | Minimum | Base Rate
Debt Instrument [Line Items]
Variable rate (as a percent)	1.00%
Term Loan Due January 2031 | Minimum | SOFR Rate
Debt Instrument [Line Items]
Variable rate (as a percent)	0.00%
Term Loan Due January 2031 And Term Loan Due September 2028 | Revolving Credit Facility
Debt Instrument [Line Items]
Percentage of cash proceeds from incurrence of debt (as a percent)	100.00%
Term Loan Due January 2031 And Term Loan Due September 2028 | Secured Notes | Revolving Credit Facility
Debt Instrument [Line Items]
Percentage of cash proceeds from incurrence of debt (as a percent)	100.00%
9.00% Senior Unsecured Notes due 2025 | Secured Notes
Debt Instrument [Line Items]
Stated interest rate on debt (as a percent)					9.00%			9.00%
Loss on extinguishment of debt								$ 1,000,000
9.00% Senior Unsecured Notes due 2025 | Unsecured Notes
Debt Instrument [Line Items]
Total long-term debt and other					$ 0			0			533,000,000
Senior Secured Notes Due January 2031 | Secured Notes
Debt Instrument [Line Items]
Stated interest rate on debt (as a percent)										5.87%
Principal amount | €										€ 675,000,000
Redemption price (as a percent)			101.00%
Variable rate (as a percent)	3.875%
Variable rate, floor (as a percent)	0.00%
Senior Secured Notes Due January 2031 | Secured Notes | Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
Redemption price percentage to change in control (as a percent)			100.00%
Senior Secured Notes Due January 2031 | Secured Notes | Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Redemption price (as a percent)			103.875%
Senior Secured Notes Due January 2031 | Secured Notes | Maximum
Debt Instrument [Line Items]
Maximum percentage of principal amount that can be redeemed			40.00%
Senior Secured Notes Due January 2031 | Secured Notes | Bausch + Lomb
Debt Instrument [Line Items]
Total long-term debt and other					$ 784,000,000			$ 784,000,000			$ 0

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