Receivables (Allowances For Discounts, Returns, Claims And Doubtful Accounts) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of year	$ 74,718	$ 86,103	$ 78,335
Acquisitions	382	4,240	6,510
Additions charged to net sales or costs and expenses	387,253	317,716	308,507
Deductions	400,432	333,341	307,249
Balance at end of year	$ 61,921	$ 74,718	$ 86,103