Selected Quarterly Data - Additional Information (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
Effect of Fourth Quarter Events [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
Merger related costs and expenses						52.7
Mark-to-market actuarial gains (losses) on pension and post-retirement benefit plans	63.2				146.3
Inventory fair value step-up and customer backlog				76.8	179.6
Loss on early extinguishment of debt					75.4				0	75.4	0
Restructuring cost	61.6			27.4	55.3
Impairment charges, related to trade names	11.0				60.7				11.0	60.7	0
Expense related to merger					12.0
Flow Control
Effect of Fourth Quarter Events [Line Items]
Net sales					886.5
Income (loss) from continuing operations					$ (117.0)