Share-Based Compensation - Summary of Number of Awards Granted and Grand Date Fair Value (Detail) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Deferred Tax Assets Valuation Allowance [Line Items]
Grant date fair value	$ 7.93
TSR Awards
Deferred Tax Assets Valuation Allowance [Line Items]
Number of shares (in shares)	136	55	46
Grant date fair value	$ 9.28	$ 24.65	$ 29.84
ROIC Awards
Deferred Tax Assets Valuation Allowance [Line Items]
Number of shares (in shares)	174	55	53
Grant date fair value	$ 7.93	$ 24.55	$ 24.20