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Contingencies and Litigation (Tables)
 3 Months Ended
Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract]  
Brazil Tax Contingencies Below is a summary of our Brazilian tax contingencies:
March 31,
2020		December 31,
2019
Tax contingency - unreserved$349  $442  
Escrow cash deposits40  51  
Surety bonds103  135  
Letters of credit72  91  
Liens on Brazilian assets—  —