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Summary of Significant Accounting Policies - Identified Intangible Assets Identified by Segment (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Intangible Asset Excluding Goodwill [Line Items] |  |
Beginning Balance | $ 4,743 | $ 4,073
Additions to intangible assets | 696 | 981
Amortization | (363) | (305)
Currency translation adjustments and other | (21) | (6)
Ending Balance | 5,055 | 4,743
Discontinued Operations [Member] |  |
Intangible Asset Excluding Goodwill [Line Items] |  |
Beginning Balance | 74 | 20
Additions to intangible assets |  | 58
Amortization | (6) | (4)
Currency translation adjustments and other |  |
Ending Balance | 68 | 74
Rig Systems [Member] |  |
Intangible Asset Excluding Goodwill [Line Items] |  |
Beginning Balance | 62 | 56
Additions to intangible assets | 190 | 18
Amortization | (21) | (14)
Currency translation adjustments and other | 1 | 2
Ending Balance | 232 | 62
Rig Aftermarket [Member] |  |
Intangible Asset Excluding Goodwill [Line Items] |  |
Beginning Balance | 89 | 92
Additions to intangible assets | 59 |
Amortization | (6) | (3)
Currency translation adjustments and other |  |
Ending Balance | 142 | 89
Wellbore Technologies [Member] |  |
Intangible Asset Excluding Goodwill [Line Items] |  |
Beginning Balance | 2,942 | 3,134
Additions to intangible assets | 286 | 8
Amortization | (217) | (203)
Currency translation adjustments and other | (12) | 3
Ending Balance | 2,999 | 2,942
Completion & Production Solutions [Member] |  |
Intangible Asset Excluding Goodwill [Line Items] |  |
Beginning Balance | 1,576 | 771
Additions to intangible assets | 161 | 897
Amortization | (113) | (81)
Currency translation adjustments and other | (10) | (11)
Ending Balance | $ 1,614 | $ 1,576

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- Definition Intangible Assets Acquired During Period. + References No definition available. + Details
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- Definition Intangible Assets Translation And Purchase Accounting Adjustments. + References No definition available. + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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