Quarterly report pursuant to Section 13 or 15(d)

Net Loss per Share - Narrative (Details)

v3.19.2
Net Loss per Share - Narrative (Details) - shares
shares in Millions
6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Earnings Per Share [Abstract]    
Weighted average shares excluded from the calculation of diluted weighted average shares outstanding (shares) 21.6 14.7