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Retirement Plans and Other Retiree Benefits (Tables)
 6 Months Ended
Jun. 30, 2021
Retirement Benefits [Abstract]  
Components Of Net Periodic Benefit Cost
Components of Net periodic benefit cost for the three and six months ended June 30, 2021 and 2020 were as follows:
Three Months Ended June 30,
 Pension BenefitsOther Retiree Benefits
 United StatesInternational  
 202120202021202020212020
Service cost$1 $— $4 $3 $7 $5 
Interest cost15 18 4 4 9 8 
Expected return on plan assets(26)(27)(4)(5)— (1)
Amortization of actuarial loss (gain)10 13 3 4 7 6 
Net periodic benefit cost
$— $4 $7 $6 $23 $18 


Six Months Ended June 30,
 Pension BenefitsOther Retiree Benefits
 United StatesInternational  
 202120202021202020212020
Service cost$1 $— $8 $7 $13 $11 
Interest cost30 37 9 9 18 19 
Expected return on plan assets(53)(54)(10)(9)— (1)
Amortization of actuarial loss (gain)23 24 6 5 13 11 
Net periodic benefit cost
$1 $7 $13 $12 $44 $40