Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share - Additional Information (Detail)

v3.19.1
Earnings Per Share - Additional Information (Detail) - shares
shares in Millions
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Earnings Per Share [Abstract]    
Equity grants with anti-dilutive effect 1.4 2.7