Division Information (Schedule Of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 26, 2011
Segment Reporting Information [Line Items]
Goodwill	$ 1,275,234
Accumulated impairment losses	(1,213,335)
Balance as of December 31, 2011	61,899	62,907
Foreign currency exchange rate changes	1,751
Balance as of March 31, 2012	63,650	62,907
North American Retail Division [Member]
Segment Reporting Information [Line Items]
Goodwill	1,842
Accumulated impairment losses	(1,842)
Balance as of December 31, 2011	0
Foreign currency exchange rate changes
Balance as of March 31, 2012	0
North American Business Solutions Division [Member]
Segment Reporting Information [Line Items]
Goodwill	367,790
Accumulated impairment losses	(348,359)
Balance as of December 31, 2011	19,431
Foreign currency exchange rate changes
Balance as of March 31, 2012	19,431
International Division [Member]
Segment Reporting Information [Line Items]
Goodwill	905,602
Accumulated impairment losses	(863,134)
Balance as of December 31, 2011	42,468
Foreign currency exchange rate changes	1,751
Balance as of March 31, 2012	$ 44,219