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Advertising And Promotion Expense	3 Months Ended
Advertising And Promotion Expense	Mar. 31, 2013
Marketing and Advertising Expense [Abstract]
Advertising and promotion expense	Advertising and Promotion Expense Advertising and certain promotion expenses are included in "Selling, general and administrative" in the Condensed Consolidated Statements of Income and were $6 million and $7 million for the quarters ended March 31, 2013 and 2012, respectively.