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General - Business Overview (Details) - segment
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
General        
Number of segments 3 3 3 3
Healthcare        
General        
Number of reporting units, before discontinued operation 2 2 2 2
Number of reporting units 1 1 1 1