Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 28, 2014 Entity Claimant	Jun. 28, 2014 United States Department of Commerce Antidumping Review [Member]	Mar. 22, 2013 United States Department of Commerce Antidumping Review [Member]	Jun. 21, 2011 United States Department of Commerce Antidumping Review [Member]	Apr. 19, 2010 United States Department of Commerce Antidumping Review [Member]
Commitments and Contingencies [Abstract]
Number of entities that received letters from counsel regarding copper tube	5
Number of claimants for copper tube	21
Number of entities that received letters from counsel regarding copper fittings	3
Number of claimants for copper fittings	21
Loss Contingencies [Line Items]
Assignment of antidumping duty rate on U.S. imports by Company subsidiaries (in hundredths)			40.50%	19.80%	48.30%
Reserve established		$ 1.1
Other [Abstract]
Term of guarantees	1 year
Payments required to be made under guarantees, maximum	$ 10.3