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Business Segments - Business Segments (Detail) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013
Segment Reporting Information [Line Items] |  |  |  |
Revenue | $ 5,255 | $ 4,680 | $ 10,144 | $ 9,056
Total Operating Profit | 913 | 713 | 1,712 | 1,406
Percentage as of operating profit to revenue | 17.40% | 15.20% | 16.90% | 15.50%
Operating Segments [Member] | Rig Systems [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 2,372 | 2,081 | 4,628 | 3,992
Total Operating Profit | 501 | 383 | 952 | 753
Percentage as of operating profit to revenue | 21.10% | 18.40% | 20.60% | 18.90%
Operating Segments [Member] | Rig Aftermarket [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 785 | 670 | 1,535 | 1,221
Total Operating Profit | 217 | 189 | 408 | 331
Percentage as of operating profit to revenue | 27.60% | 28.20% | 26.60% | 27.10%
Operating Segments [Member] | Wellbore Technologies [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 1,446 | 1,222 | 2,724 | 2,445
Total Operating Profit | 263 | 184 | 484 | 366
Percentage as of operating profit to revenue | 18.20% | 15.10% | 17.80% | 15.00%
Operating Segments [Member] | Completion & Production Solutions [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 1,127 | 1,057 | 2,129 | 2,059
Total Operating Profit | 157 | 127 | 294 | 263
Percentage as of operating profit to revenue | 13.90% | 12.00% | 13.80% | 12.80%
Unallocated/Eliminations [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | (475) | (350) | (872) | (661)
Total Operating Profit | $ (225) | $ (170) | $ (426) | $ (307)

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