Selected Quarterly Data - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 26, 2015	Jun. 27, 2015	Mar. 28, 2015	Dec. 31, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Effect of Fourth Quarter Events [Line Items]
Net sales	$ 1,760.7	$ 1,552.1	$ 1,661.2	$ 1,475.0	$ 1,802.5	$ 1,758.4	$ 1,834.1	$ 1,644.0	$ 6,449.0	$ 7,039.0	$ 6,999.7
Income (loss) from continuing operations									(65.0)	607.0	511.7
Mark-to-market actuarial gains (losses) on pension and post-retirement benefit plans	23.0				$ (49.9)
Restructuring cost	$ 70.1						$ 35.4	$ 17.4			35.5
Impairment charges, related to trade names										0.0
Valves And Controls [Member]
Effect of Fourth Quarter Events [Line Items]
Goodwill, Impairment Loss									554.7
Net sales									1,840.1	$ 2,377.3	$ 2,451.7
Impairment charges, related to trade names									$ 39.5