Quarterly report pursuant to Section 13 or 15(d)

Segment Disclosures - Narrative (Details)

v3.19.2
Segment Disclosures - Narrative (Details) - segment
6 Months Ended 12 Months Ended
Jun. 30, 2019
Dec. 31, 2018
Segment Reporting [Abstract]    
Number of operating segments 3 4
Number of corporate non-operating segments 1 1