Segment Information - Financial Information By Reportable Segment (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended										12 Months Ended
	Dec. 31, 2013		Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 31, 2012		Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Segment Reporting Information [Line Items]
Net sales	$ 1,916.7		$ 1,824.8	$ 1,963.7	$ 1,774.5	$ 1,750.9		$ 865.5	$ 941.5	$ 858.2	$ 7,479.7		$ 4,416.1		$ 3,456.7
Operating income (loss)	233.8		240.0	225.9	74.3	(304.1)		55.2	119.3	86.5	774.0		(43.1)		100.2
Identifiable assets (1)	11,743.3	[1]				11,882.7	[1]				11,743.3	[1]	11,882.7	[1]	4,586.3	[1]
Depreciation											148.9		87.8		66.2
Amortization											137.2		76.0		41.9
Capital expenditures											170.0		94.5		73.3
Valves & Controls
Segment Reporting Information [Line Items]
Net sales											2,469.2		548.6		0
Operating income (loss)											161.4		(76.8)		0
Identifiable assets (1)	4,204.0	[1]				4,369.6	[1]				4,204.0	[1]	4,369.6	[1]	0	[1]
Depreciation											64.0		15.1		0
Amortization											69.3		21.7		0
Capital expenditures											67.2		21.9		0
Process Technologies
Segment Reporting Information [Line Items]
Net sales											1,765.9		1,521.1		1,345.9
Operating income (loss)											243.2		132.5		(40.2)
Identifiable assets (1)	2,707.7	[1]				2,670.2	[1]				2,707.7	[1]	2,670.2	[1]	2,476.2	[1]
Depreciation											29.2		29.2		27.1
Amortization											26.0		24.4		21.8
Capital expenditures											45.2		31.2		30.6
Flow Technologies
Segment Reporting Information [Line Items]
Net sales											1,618.5		1,136.7		1,042.7
Operating income (loss)											149.7		35.5		97.9
Identifiable assets (1)	2,050.4	[1]				2,112.4	[1]				2,050.4	[1]	2,112.4	[1]	1,316.0	[1]
Depreciation											22.1		16.6		15.5
Amortization											16.7		13.6		17.8
Capital expenditures											26.2		18.7		18.8
Technical Solutions
Segment Reporting Information [Line Items]
Net sales											1,663.4		1,236.4		1,086.8
Operating income (loss)											285.0		165.0		185.8
Identifiable assets (1)	2,093.4	[1]				2,154.2	[1]				2,093.4	[1]	2,154.2	[1]	651.7	[1]
Depreciation											23.6		18.9		17.7
Amortization											25.2		16.2		2.3
Capital expenditures											16.2		13.5		15.6
All Other Segments
Segment Reporting Information [Line Items]
Net sales											(37.3)		(26.7)		(18.7)
Operating income (loss)											(65.3)		(299.3)		(143.3)
Identifiable assets (1)	687.8	[1]				576.3	[1]				687.8	[1]	576.3	[1]	142.4	[1]
Depreciation											10.0		8.0		5.9
Amortization											0		0.1		0
Capital expenditures											$ 15.2		$ 9.2		$ 8.3

[1] All cash and cash equivalents are included in “Other.”