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Other Expense (Income), Net
 6 Months Ended
Jun. 30, 2021
Other Income and Expenses [Abstract]  
Other Expense (Income), Net Other Expense (Income), Net
Second quarter endedSix months ended
 June 30,June 30,
2021202020212020
Non-service related net periodic benefit cost$3 $5 $6 $11 
Interest income(1)— (1)(4)
Foreign currency losses (gains), net1 (7)3 (7)
Net loss from asset sales1 2 4 4 
Deferred compensation4 7 6 (3)
Other, net— 9 (6)(9)
Other expense (income), net$8 $16 $12 $(8)