Quarterly report pursuant to Section 13 or 15(d)

Earnings per share - Narrative (Details)

v3.19.3
Earnings per share - Narrative (Details) - shares
shares in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2019
Sep. 30, 2018
Stock Options      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Anti-dilutive securities excluded from the calculation of diluted earnings per share 1.0 1.0 1.9
Warrants      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Anti-dilutive securities excluded from the calculation of diluted earnings per share   1.0 1.9
Restricted Share Units      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Anti-dilutive securities excluded from the calculation of diluted earnings per share   1.0 1.9