Business Segments (Details) (USD $) In Millions	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Segment Reporting Information [Line Items]
Revenues	$ 1,685.9	$ 1,527.1	$ 4,928.2	$ 4,326.5
Income (loss) before income taxes	198.0	185.1	525.3	517.9
Drilling And Production Systems [Member]
Segment Reporting Information [Line Items]
Revenues	977.2	944.0	2,845.5	2,600.1
Income (loss) before income taxes	196.6	161.8	474.3	463.8
Valves And Measurement Systems [Member]
Segment Reporting Information [Line Items]
Revenues	434.4	312.7	1,200.8	937.0
Income (loss) before income taxes	81.5	43.0	212.2	137.3
Process and Compression Systems [Member]
Segment Reporting Information [Line Items]
Revenues	274.3	270.4	881.9	789.4
Income (loss) before income taxes	24.0	41.4	88.5	96.4
Corporate And Other [Member]
Segment Reporting Information [Line Items]
Income (loss) before income taxes	$ (104.1)	$ (61.1)	$ (249.7)	$ (179.6)

Sum of operating profit and nonoperating income (expense) before income (loss) from equity method investments, income taxes, extraordinary items, cumulative effects of changes in accounting principles, and noncontrolling interest.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph h

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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)

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