Receivables (Allowances For Discounts, Returns, Claims And Doubtful Accounts) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Allowance for Doubtful Accounts Receivable [Roll Forward]
Balance at beginning of year	$ 86,103	$ 78,335	$ 78,947
Acquisitions	4,240	6,510	0
Additions charged to net sales or costs and expenses	317,716	308,507	296,419
Deductions	333,341	307,249	297,031
Balance at end of year	$ 74,718	$ 86,103	$ 78,335