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Variable Interest Entities (Tables)
12 Months Ended
Dec. 31, 2019
Variable Interest Entity, Primary Beneficiary, Does Not Hold Majority Voting Interest, Disclosures [Abstract]  
Schedule of financial information of VIE's
The revenues, income from continuing operations before income taxes and net cash provided by operating activities for our variable interest entities are as follows:
 Year ended December 31,
 201920182017
Revenues$93  $117  $127  
Income from continuing operations before income taxes10  13  21  
Net cash provided by operating activities12  16  25