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Business Segments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Business Segments
Total Revenue	$ 3,513	$ 2,941	$ 6,659	$ 5,973
Operating Income (Loss)	708	590	1,317	1,227
Percentage as of operating profit to revenue	20.20%	20.10%	19.80%	20.50%
Business Segments (Textuals) [Abstract]
Revenue from shipyard customer	12.00%	17.00%	12.00%	19.00%
Rig Technology [Member]
Business Segments
Total Revenue	1,894	1,672	3,502	3,558
Operating Income (Loss)	514	505	933	1,086
Percentage as of operating profit to revenue	27.10%	30.20%	26.60%	30.50%
Petroleum Services & Supplies [Member]
Business Segments
Total Revenue	1,359	1,033	2,624	1,956
Operating Income (Loss)	249	138	480	251
Percentage as of operating profit to revenue	18.30%	13.40%	18.30%	12.80%
Distribution Services [Member]
Business Segments
Total Revenue	423	365	833	699
Operating Income (Loss)	25	13	52	24
Percentage as of operating profit to revenue	5.90%	3.60%	6.20%	3.40%
Elimination [Member]
Business Segments
Total Revenue	(163)	(129)	(300)	(240)
Operating Income (Loss)	$ (80)	$ (66)	$ (148)	$ (134)

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- Definition

Business segments.

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Percentage as of operating profit to revenue.

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Revenue from shipyard customer.

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Segment Reporting Information By Segment.

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The net result for the period of deducting operating expenses from operating revenues.

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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

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