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Business Segments and Geographic Areas - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2015 Business Segment | Dec. 31, 2014 | Dec. 31, 2013
Segment Reporting Information [Line Items] |  |  |
Number of reportable segments | Segment | 4 |  |
Number of business units | 15 |  |
Revenue [Member] | Customer Concentration Risk [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue from shipyard customer | 4.00% | 7.00% | 11.00%
Rig Systems [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of business units | 2 |  |
Rig Aftermarket [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of business units | 1 |  |
Wellbore Technologies [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of business units | 6 |  |
Completion & Production Solutions [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of business units | 6 |  |

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