Financial Information by Reportable Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012	Jul. 02, 2011
Segment Reporting Information [Line Items]
Net sales to external customers	$ 941,525	$ 910,175	$ 1,799,702	$ 1,700,448
Operating income (loss)	117,792	109,422	202,744	195,599
Water & Fluid Solutions
Segment Reporting Information [Line Items]
Net sales to external customers	675,522	631,994	1,262,500	1,147,362
Intersegment sales	(116)	316	(43)	771
Operating income (loss)	91,989	84,521	155,666	141,049
Technical Products
Segment Reporting Information [Line Items]
Net sales to external customers	266,003	278,181	537,202	553,086
Intersegment sales	1,535	1,559	2,894	2,558
Operating income (loss)	50,624	48,261	101,083	96,348
All Other Segments
Segment Reporting Information [Line Items]
Intersegment sales	(1,419)	(1,875)	(2,851)	(3,329)
Operating income (loss)	$ (24,821)	$ (23,360)	$ (54,005)	$ (41,798)

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

No definition available.

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- Definition

Amount of revenue from transactions with other operating segments of the same entity.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 131

-Paragraph 27

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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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 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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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