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Interest Income and Other Non-Operating Income
12 Months Ended
Dec. 31, 2020
Other Income and Expenses [Abstract]  
Interest Income and Other Non-Operating Income Interest Income and Other Non-Operating Income
Years Ended December 31,
202020192018
Non-service pension and OPEB income$1,095 $797 $1,665 
Interest income241 429 335 
Licensing agreements income211 165 296 
Revaluation of investments265 80 258 
Other73 (2)42 
Total interest income and other non-operating income, net$1,885 $1,469 $2,596