Annual report pursuant to Section 13 and 15(d)

Reportable Segments - Narratives (Details)

v3.10.0.1
Reportable Segments - Narratives (Details)
12 Months Ended
Dec. 31, 2018
segment
product_group
Dec. 31, 2017
segment
Segment Reporting Information    
Number of operating segments 2 2,000
Reportable segments 2  
Environmental Catalysts & Services    
Segment Reporting Information    
Number of product groups | product_group 3