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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2019
Text block [abstract]  
Summary of Lawsuits Disputes
Subject
 
31 December 2019

Anticipated Maximum
Risk

(excluding accrued
interest)
  
31 December 2018

Anticipated Maximum
Risk

(excluding accrued
interest)
  
31 December 2019

Provision
  
31 December 2018

Provision
 
Other Disputes
  18,763   —     —     —