Amount before accumulated depreciation of leased physical assets used in the normal conduct of business to produce goods and services.

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The total charge for the use of long-lived depreciable assets subject to a lease meeting the criteria for capitalization.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6455314&loc=d3e45014-112735

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 10
-Section 55
-Paragraph 40
-Subparagraph (Note 2)
-URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697

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- Definition

Amount of interest capitalized during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Allowance for Funds Used during Construction
-URI http://asc.fasb.org/extlink&oid=6504829

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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Property, Plant and Equipment - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property Plant And Equipment [Line Items]
Assets capitalized under capital leases	$ 0
Accumulated amortization for assets capitalized under capital leases	0	$ 98,000
Interest cost capitalized	15,000,000	30,600,000	$ 14,100,000
PP&E [Member]
Property Plant And Equipment [Line Items]
Interest cost capitalized	$ 15,015,000	$ 30,348,000
Minimum [Member] \| Chemical Processing Plants and Plant Infrastructure [Member]
Property Plant And Equipment [Line Items]
Useful lives in years	15 years
Minimum [Member] \| Processing Plant Components [Member]
Property Plant And Equipment [Line Items]
Useful lives in years	3 years
Minimum [Member] \| Trucks, Automobiles, Trailers, and Other Rolling Stock [Member]
Property Plant And Equipment [Line Items]
Useful lives in years	3 years
Maximum [Member] \| Chemical Processing Plants and Plant Infrastructure [Member]
Property Plant And Equipment [Line Items]
Useful lives in years	30 years
Maximum [Member] \| Processing Plant Components [Member]
Property Plant And Equipment [Line Items]
Useful lives in years	10 years
Maximum [Member] \| Trucks, Automobiles, Trailers, and Other Rolling Stock [Member]
Property Plant And Equipment [Line Items]
Useful lives in years	7 years