Segment Information Part Three (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Product Category:
Consolidated net sales	$ 849,540,000	$ 872,196,000	$ 1,763,092,000	$ 1,802,022,000
Consolidated net sales (in hundredths)	100.00%	100.00%	100.00%	100.00%
Computers [Member]
Product Category:
Consolidated net sales	238,300,000	243,000,000	500,400,000	461,700,000
Consolidated net sales (in hundredths)	28.00%	28.00%	28.00%	26.00%
Computer accessories & software [Member]
Product Category:
Consolidated net sales	237,600,000	251,000,000	497,200,000	521,600,000
Consolidated net sales (in hundredths)	28.00%	29.00%	28.00%	29.00%
Consumer electronics [Member]
Product Category:
Consolidated net sales	147,700,000	170,800,000	314,600,000	376,400,000
Consolidated net sales (in hundredths)	17.00%	20.00%	18.00%	21.00%
Industrial products [Member]
Product Category:
Consolidated net sales	102,900,000	78,800,000	193,200,000	149,600,000
Consolidated net sales (in hundredths)	12.00%	9.00%	11.00%	8.00%
Computer components [Member]
Product Category:
Consolidated net sales	99,500,000	106,500,000	208,100,000	249,000,000
Consolidated net sales (in hundredths)	12.00%	12.00%	12.00%	14.00%
Other products [Member]
Product Category:
Consolidated net sales	$ 23,500,000	$ 22,100,000	$ 49,600,000	$ 43,700,000
Consolidated net sales (in hundredths)	3.00%	2.00%	3.00%	2.00%