XML 109 R82.htm IDEA: XBRL DOCUMENT v3.25.4
RETIREMENT BENEFITS PLANS - Fair Value of Other Postretirement Benefits Plan Assets (Details) - Other postretirement benefits expense (income) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Fair Value of Other Postretirement Benefits Plan Assets [Line Items]    
Cash equivalents $ 3 $ 3
Common collective and other trusts measured at net asset value 17 15
Total other postretirement benefits plan assets 20 18
Quoted prices in active markets for identical assets (Level 1)    
Fair Value of Other Postretirement Benefits Plan Assets [Line Items]    
Cash equivalents 3 3
Total other postretirement benefits plan assets 3 3
Other observable inputs (Level 2)    
Fair Value of Other Postretirement Benefits Plan Assets [Line Items]    
Cash equivalents 0 0
Total other postretirement benefits plan assets 0 0
Unobservable inputs (Level 3)    
Fair Value of Other Postretirement Benefits Plan Assets [Line Items]    
Cash equivalents 0 0
Total other postretirement benefits plan assets $ 0 $ 0