Business Segments and Enterprise-Wide Information (Schedule Of Contributions By Major Customers) (Details) - Customer Concentration Risk - Sales Revenue, Net	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Wal-Mart Stores Inc.
Revenue, Major Customer [Line Items]
Percentage of revenue contributed by major customers	16.60%	15.40%	16.50%	15.30%
Walgreen Co.
Revenue, Major Customer [Line Items]
Percentage of revenue contributed by major customers	12.90%	13.20%	13.60%	13.80%