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Goodwill (Tables)
 6 Months Ended
Jun. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
 (in millions)Commercial IndustriesGovernment ServicesTransportationTotal
Balance at December 31, 2019$821  $621  $60  $1,502  
Foreign currency translation(7) (5) 1  (11) 
Balance at June 30, 2020$814  $616  $61  $1,491