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POSTRETIREMENT BENEFIT PLANS (Tables)
9 Months Ended
Sep. 30, 2024
Retirement Benefits [Abstract]  
Schedule of Net Benefit Costs
The components of benefit plans cost (income) other than the service cost are included in the caption Non-operating benefit income in our Consolidated and Combined Statement of Income (Loss).
20242023
Three months ended September 30Principal pensionOther pensionPrincipal retiree benefitPrincipal pensionOther pensionPrincipal retiree benefit
Service cost – operating$$$$$$
Interest cost137 57 140 63 10 
Expected return on plan assets(186)(84)— (189)(89)— 
Amortization of net loss (gain)(46)(11)(53)(11)
Amortization of prior service cost (credit)(2)(15)(2)(15)
Curtailment/settlement gain— — — — (2)— 
Non-operating benefit costs (income)$(93)$(21)$(16)$(100)$(29)$(16)
Net periodic expense (income)$(87)$(13)$(15)$(94)$(21)$(14)
20242023
Nine months ended September 30Principal pensionOther pensionPrincipal retiree benefitPrincipal pensionOther pensionPrincipal retiree benefit
Service cost – operating$20 $24 $$19 $24 $
Interest cost411 170 28 421 187 31 
Expected return on plan assets(557)(250)— (567)(262)— 
Amortization of net loss (gain)(138)24 (32)(158)(34)
Amortization of prior service cost (credit)(5)(45)(5)(45)
Curtailment/settlement gain— (11)— — (7)— 
Non-operating benefit costs (income)$(279)$(71)$(49)$(301)$(84)$(48)
Net periodic expense (income)$(260)$(47)$(44)$(282)$(60)$(43)