Earnings Per Share - Additional Information (Detail) - $ / shares shares in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of anti-dilutive securities	2	1
Weighted average exercise price of options	$ 26.55	$ 38.49
Stock Awards and Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of anti-dilutive securities		5
Common shares equivalents that would have been included in diluted average shares outstanding		1