Receivables (Net Components Of Receivables) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Receivables [Abstract]
Customers, trade	$ 1,243,533	$ 1,081,493
Income tax receivable	21,835	12,301
Other	71,084	60,772
Receivables, gross	1,336,452	1,154,566
Less allowance for discounts, returns, claims and doubtful accounts	78,947	72,603
Receivables, net	$ 1,257,505	$ 1,081,963