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Depreciation Computed Using Estimated Useful Lives (Detail)
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12 Months Ended |
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Dec. 31, 2013
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Minimum
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| Property, Plant and Equipment [Line Items] |
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| Estimated useful life |
3 years |
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Maximum
|
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| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
39 years |
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Buildings | Minimum
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| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
15 years |
|
Buildings | Maximum
|
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
39 years |
|
Building Improvements | Minimum
|
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
5 years |
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Building Improvements | Maximum
|
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
20 years |
|
Pipelines | Minimum
|
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
10 years |
|
Pipelines | Maximum
|
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| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
30 years |
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Disposal wells | Minimum
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| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
3 years |
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Disposal wells | Maximum
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| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
10 years |
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Machinery and equipment | Minimum
|
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
3 years |
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Machinery and equipment | Maximum
|
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
15 years |
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Equipment under capital lease | Minimum
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| Property, Plant and Equipment [Line Items] |
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| Estimated useful life |
4 years |
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Equipment under capital lease | Maximum
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| Property, Plant and Equipment [Line Items] |
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| Estimated useful life |
6 years |
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Motor vehicles and trailers | Minimum
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| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
3 years |
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Motor vehicles and trailers | Maximum
|
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
11 years |
|
Rental equipment | Minimum
|
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| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
5 years |
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Rental equipment | Maximum
|
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| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
15 years |
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Office equipment | Minimum
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|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
3 years |
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Office equipment | Maximum
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|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful life |
7 years |