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Business Segments - Business Segments (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Segment Reporting Information [Line Items] |  |  |  |
Total Revenue | $ 3,306 | $ 5,587 | $ 12,035 | $ 15,731
Total Operating Profit (loss) | $ 234 | $ 988 | $ 1,242 | $ 2,700
Percentage as of operating profit (Loss) to revenue | 7.10% | 17.70% | 10.30% | 17.20%
Operating Segments [Member] | Rig Systems [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Revenue | $ 1,496 | $ 2,659 | $ 5,949 | $ 7,287
Total Operating Profit (loss) | $ 253 | $ 533 | $ 1,093 | $ 1,485
Percentage as of operating profit (Loss) to revenue | 16.90% | 20.00% | 18.40% | 20.40%
Operating Segments [Member] | Rig Aftermarket [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Revenue | $ 570 | $ 837 | $ 1,946 | $ 2,372
Total Operating Profit (loss) | $ 145 | $ 229 | $ 479 | $ 637
Percentage as of operating profit (Loss) to revenue | 25.40% | 27.40% | 24.60% | 26.90%
Operating Segments [Member] | Wellbore Technologies [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Revenue | $ 834 | $ 1,469 | $ 2,961 | $ 4,193
Total Operating Profit (loss) | $ (7) | $ 278 | $ 110 | $ 762
Percentage as of operating profit (Loss) to revenue | (0.80%) | 18.90% | 3.70% | 18.20%
Operating Segments [Member] | Completion & Production Solutions [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Revenue | $ 798 | $ 1,191 | $ 2,619 | $ 3,320
Total Operating Profit (loss) | $ 3 | $ 185 | $ 160 | $ 479
Percentage as of operating profit (Loss) to revenue | 0.40% | 15.50% | 6.10% | 14.40%
Unallocated Expenses and Eliminations [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Revenue | $ (392) | $ (569) | $ (1,440) | $ (1,441)
Total Operating Profit (loss) | $ (160) | $ (237) | $ (600) | $ (663)

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