Earnings Per Share - Additional Information (Detail) - $ / shares shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Dividends declared, per share	$ 0.23	$ 0.69	$ 0.23	$ 0.65
Restricted Stock [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Potentially dilutive restricted share awards excluded from computation of diluted EPS			1.7
Jarden Acquisition [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Shares issuable to Dissenting Shareholders			2.5