Business Segments and Enterprise-Wide Information (Schedule Of Contributions By Major Customers) (Details) - Customer Concentration Risk - Sales Revenue, Net	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Wal-Mart Stores Inc.
Revenue, Major Customer [Line Items]
Percentage of revenue contributed by major customers	16.40%	15.10%	16.40%	15.20%
Walgreen Co.
Revenue, Major Customer [Line Items]
Percentage of revenue contributed by major customers	13.50%	13.70%	14.00%	14.00%
Kroger Company [Member]
Revenue, Major Customer [Line Items]
Percentage of revenue contributed by major customers	10.00%	9.90%	9.90%	9.80%