Financial Information By Reportable Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Oct. 01, 2011	Jul. 02, 2011	Apr. 02, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Segment Reporting Information [Line Items]
Net sales to external customers	$ 1,750,932	$ 865,512	$ 941,525	$ 858,177	$ 865,692	$ 890,546	$ 910,175	$ 790,273	$ 4,416,146	$ 3,456,686	$ 3,030,773
Operating income (loss)	(304,106)	55,199	119,314	86,474	(186,175)	92,195	108,714	85,469	(43,119)	100,203	312,983
Amortization									75,957	41,897	26,184
Capital expenditures									94,532	73,348	59,523
Water & Fluid Solutions
Segment Reporting Information [Line Items]
Net sales to external customers									2,638,403	2,369,804	2,041,281
Operating income (loss)									168,043	58,311	231,588
Amortization									38,159	39,451	22,981
Capital expenditures									49,890	49,241	39,631
Valves & Controls
Segment Reporting Information [Line Items]
Net sales to external customers									546,707
Operating income (loss)									(76,843)
Amortization									21,696
Capital expenditures									21,992
Technical Solutions
Segment Reporting Information [Line Items]
Net sales to external customers									1,231,036	1,086,882	989,492
Operating income (loss)									165,017	185,240	151,533
Amortization									16,102	2,446	2,610
Capital expenditures									13,565	15,806	8,336
All Other Segments
Segment Reporting Information [Line Items]
Operating income (loss)									(299,336)	(143,348)	(70,138)
Amortization											593
Capital expenditures									$ 9,085	$ 8,301	$ 11,556