INCOME TAXES - INCOME TAXES - Reconciliation to US Statutory Rate - Post-Adoption (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Amount
U.S Federal Statutory Tax Rate	$ 42.0
State and Local Income Taxes, Net of Federal Income Tax Effect	10.0
Effect of Cross-Border Tax Laws
Subpart F	19.0
Branch Income	8.0
Tax Credits	(4.0)
Nontaxable or Nondeductible Items
Disallowed Deductions	7.0
Changes in Unrecognized Tax Benefits	16.0
Other Adjustments
Deferred Tax Liability on Future Branch Income	73.0
Exchange Gains/(Losses)	26.0
Reversal of Deferred Tax Liabilities as a Result of Entity Classification Changes	(29.0)
Goodwill Step-up	(10.0)
Provision for (benefit from) income taxes on continuing operations	$ 102.0	$ 213.0	$ (217.0)
Percent
U.S Federal Statutory Tax Rate	21.00%	21.00%	21.00%
State and Local Income Taxes, Net of Federal Income Tax Effect	5.30%	(10.80%)	5.00%
Foreign Tax Effects		30.00%	(11.60%)
Effect of Cross-Border Tax Laws
Subpart F	9.40%
Branch Income	4.00%
Effective Income Tax Rate Reconciliation, Tax Credit, Percent [Abstract]
Tax Credits	(2.00%)
Changes in Valuation Allowance		5.30%	0.00%
Nontaxable or Nondeductible Items
Disallowed Deductions	3.40%
Changes in Unrecognized Tax Benefits	8.00%	(4.60%)	(2.00%)
Other Adjustments
Deferred Tax Liability on Future Branch Income	36.90%
Exchange Gains/(Losses)	13.00%
Reversal of Deferred Tax Liabilities as a Result of Entity Classification Changes	(14.70%)
Goodwill Step-up	(4.80%)
Other Adjustments		5.70%	(0.90%)
Effective Tax Rate	51.00%	182.10%	77.70%
China
Amount
Foreign Withholding Taxes	$ 17.0
Other Adjustments
Other Adjustments	$ (3.0)
Percent
Foreign Withholding Taxes	8.40%
Other Adjustments
Other Adjustments	(1.50%)
Germany
Amount
Enacted Changes in Tax Law or Rates	$ 6.0
Other Adjustments
Other Adjustments	$ 9.0
Percent
Enacted Changes in Tax Law or Rates	3.20%
Other Adjustments
Other Adjustments	4.70%
Japan
Amount
Foreign Tax Effects	$ 7.0
Provision to Return	(5.0)
Other Adjustments
Other Adjustments	$ 1.0
Percent
Foreign Tax Effects	3.50%
Provision to Return	(2.50%)
Other Adjustments
Other Adjustments	0.60%
Luxembourg
Effect of Cross-Border Tax Laws
Changes in Valuation Allowance	$ (59.0)
Other Adjustments
Other Adjustments	$ 2.0
Effective Income Tax Rate Reconciliation, Tax Credit, Percent [Abstract]
Changes in Valuation Allowance	(29.90%)
Other Adjustments
Other Adjustments	1.10%
Netherlands
Amount
Provision to Return	$ (8.0)
Nontaxable Items	(6.0)
Effect of Cross-Border Tax Laws
Changes in Valuation Allowance	7.0
Other Adjustments
Other Adjustments	$ 4.0
Percent
Provision to Return	(3.90%)
Nontaxable Items	(3.00%)
Effective Income Tax Rate Reconciliation, Tax Credit, Percent [Abstract]
Changes in Valuation Allowance	3.50%
Other Adjustments
Other Adjustments	2.00%
Switzerland
Amount
Foreign Tax Effects	$ (11.0)
Local Tax Effects	6.0
Other Adjustments
Other Adjustments	$ (2.0)
Percent
Foreign Tax Effects	(5.60%)
Local Tax Effects	3.10%
Other Adjustments
Other Adjustments	(0.80%)
Other Foreign Jurisdictions
Amount
Foreign Tax Effects	$ 20.0
Percent
Foreign Tax Effects	10.10%
United States
Effect of Cross-Border Tax Laws
Changes in Valuation Allowance	$ (52.0)
Nontaxable or Nondeductible Items
Other Permanent Items	18.0
Other Adjustments
Other Adjustments	$ (7.0)
Effective Income Tax Rate Reconciliation, Tax Credit, Percent [Abstract]
Changes in Valuation Allowance	(26.60%)
Nontaxable or Nondeductible Items
Other Permanent Items	9.00%
Other Adjustments
Other Adjustments	(3.90%)