Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended		3 Months Ended
	Nov. 30, 2018	Nov. 30, 2013	Dec. 31, 2018	Dec. 31, 2017
Significant Accounting Policies [Line Items]
Net sales and other operating revenues			$ 821.0	$ 720.0
Cost of sales			655.0	$ 544.0
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Significant Accounting Policies [Line Items]
Net sales and other operating revenues			(20.0)
Cost of sales			(20.0)
NHUMO [Member]
Significant Accounting Policies [Line Items]
Preferred stock repurchase amount	$ 25.0	$ 25.0
Dividend percentage of preferred stock		6.00%
Preferred stock dividend	$ 1.4
Specialty Fluids [Member]
Significant Accounting Policies [Line Items]
Revenue recognized			$ 8.0
Minimum [Member]
Significant Accounting Policies [Line Items]
Payment terms			0 days
Minimum [Member] | Buildings [Member]
Significant Accounting Policies [Line Items]
Useful life of property, plant and equipment			20 years
Minimum [Member] | Machinery and Equipment [Member]
Significant Accounting Policies [Line Items]
Useful life of property, plant and equipment			10 years
Minimum [Member] | Other Fixed Assets [Member]
Significant Accounting Policies [Line Items]
Useful life of property, plant and equipment			3 years
Maximum [Member]
Significant Accounting Policies [Line Items]
Payment terms			90 days
Maximum [Member] | Buildings [Member]
Significant Accounting Policies [Line Items]
Useful life of property, plant and equipment			25 years
Maximum [Member] | Machinery and Equipment [Member]
Significant Accounting Policies [Line Items]
Useful life of property, plant and equipment			25 years
Maximum [Member] | Other Fixed Assets [Member]
Significant Accounting Policies [Line Items]
Useful life of property, plant and equipment			25 years