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Property, Plant and Equipment - Additional Information (Detail) - USD ($) | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Property Plant And Equipment [Line Items] |  |  |
Accumulated amortization for assets capitalized under capital leases | $ 98,000 | $ 28,000 |
Interest cost capitalized | 30,600,000 | 14,100,000 | $ 4,000,000
PP&E [Member] |  |  |
Property Plant And Equipment [Line Items] |  |  |
Interest cost capitalized | $ 30,348,000 | $ 13,586,000 |
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 |  |

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- Definition 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 + Details
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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 + Details
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- Definition 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. + Details
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- Definition 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. + Details
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