Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail)

v3.19.1
Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail) - shares
shares in Millions
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Earnings Per Share [Abstract]    
Weighted-average shares used in basic computations 137.1 145.3
Dilutive effect of exercise of equity grants outstanding 4.5 7.4
Dilutive effect of 2019 Convertible Notes 3.9  
Weighted-average shares used in diluted computations 145.5 152.7