v3.26.3
RETIREMENT BENEFIT PLANS - Narrative (Details) - USD ($)
$ in Millions
 1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2024
Sep. 30, 2026
Sep. 30, 2026
Dec. 31, 2026
Dec. 31, 2025
Defined Benefit Plan Disclosure [Line Items]          
Defined benefit plan, expected future employer contributions, current fiscal year   $ 25 $ 25    
Defined benefit plan, plan assets, contributions by employer     $ 17    
US Pension Plan | US | Pension benefits          
Defined Benefit Plan Disclosure [Line Items]          
Defined benefit plan, plan assets, benefits paid   15      
Net periodic benefit cost, loss due to settlement   $ 10      
Funded status of plan         $ 4
US Pension Plan | US | Pension benefits | Minimum | Forecast          
Defined Benefit Plan Disclosure [Line Items]          
Net periodic benefit cost, loss due to settlement       $ 50  
US Pension Plan | US | Pension benefits | Maximum | Forecast          
Defined Benefit Plan Disclosure [Line Items]          
Net periodic benefit cost, loss due to settlement       $ 70  
UK Pension Plan | Pension benefits          
Defined Benefit Plan Disclosure [Line Items]          
Pension plan assets liquidated to invest in an insurance annuity $ 50        
UK Pension Plan | Non-US | Pension benefits          
Defined Benefit Plan Disclosure [Line Items]          
Funded status of plan         27
Defined benefit plan, plan assets, amount         $ 131