Receivables, net (Net components of receivables) (Details) - USD ($) $ in Thousands	Jul. 04, 2015	Dec. 31, 2014
Receivables [Abstract]
Customers, trade	$ 1,397,615	$ 1,081,493
Income tax receivable	13,113	12,301
Other	57,896	60,772
Receivables, gross	1,468,624	1,154,566
Less: allowance for discounts, returns, claims and doubtful accounts	80,937	72,603
Receivables, net	$ 1,387,687	$ 1,081,963