Significant Accounting Policies - Expected Useful Lives of Property, Plant and Equipment Recorded at Cost and Depreciated or Amortized (Detail)	12 Months Ended
	Dec. 31, 2017
Land improvements | Minimum
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	10 years
Land improvements | Maximum
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	20 years
Buildings | Minimum
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	10 years
Buildings | Maximum
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	40 years
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	5 years
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	14 years
Molds, cores and rings | Minimum
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	2 years
Molds, cores and rings | Maximum
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	10 years