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Business Segments (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2012 | Mar. 31, 2011
Business Segments |  |
Revenue | $ 4,303 | $ 3,146
Total Operating Profit | 877 | 609
Percentage as of operating profit to revenue | 20.40% | 19.40%
Business Segments (Textual) [Abstract] |  |
Revenue from shipyard customer | 11.00% | 12.00%
Rig Technology [Member] |  |
Business Segments |  |
Revenue | 2,259 | 1,608
Total Operating Profit | 547 | 419
Percentage as of operating profit to revenue | 24.20% | 26.10%
Petroleum Services & Supplies [Member] |  |
Business Segments |  |
Revenue | 1,704 | 1,265
Total Operating Profit | 388 | 231
Percentage as of operating profit to revenue | 22.80% | 18.30%
Distribution & Transmission [Member] |  |
Business Segments |  |
Revenue | 564 | 410
Total Operating Profit | 43 | 27
Percentage as of operating profit to revenue | 7.60% | 6.60%
Unallocated/Elimination [Member] |  |
Business Segments |  |
Revenue | (224) | (137)
Total Operating Profit | $ (101) | $ (68)

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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 5 -Section 03 -Paragraph 1 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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