Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share - Additional Information (Detail)

v3.19.2
Earnings Per Share - Additional Information (Detail) - shares
shares in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Earnings Per Share [Abstract]        
Equity grants with anti-dilutive effect 1.0 1.7 1.0 2.1