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Segment Information Part Three (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Product Category [Abstract]
Consolidated net sales	$ 791.8	$ 847.0	$ 2,478.3	$ 2,609.4
Consolidated net sales (in hundredths)	100.00%	100.00%	100.00%	100.00%
Computers [Member]
Product Category [Abstract]
Consolidated net sales	246.5	251.5	758.9	751.2
Consolidated net sales (in hundredths)	31.10%	29.70%	30.60%	28.80%
Computer Accessories & Software [Member]
Product Category [Abstract]
Consolidated net sales	205.6	234.4	662.3	731.3
Consolidated net sales (in hundredths)	26.00%	27.70%	26.70%	28.00%
Industrial Products [Member]
Product Category [Abstract]
Consolidated net sales	125.7	110.4	349.9	303.6
Consolidated net sales (in hundredths)	15.90%	13.00%	14.10%	11.60%
Consumer Electronics [Member]
Product Category [Abstract]
Consolidated net sales	107.7	129.4	361.0	443.7
Consolidated net sales (in hundredths)	13.60%	15.30%	14.60%	17.00%
Computer Components [Member]
Product Category [Abstract]
Consolidated net sales	83.3	93.1	277.1	300.9
Consolidated net sales (in hundredths)	10.50%	11.00%	11.20%	11.60%
Other [Member]
Product Category [Abstract]
Consolidated net sales	$ 23.0	$ 28.2	$ 69.1	$ 78.7
Consolidated net sales (in hundredths)	2.90%	3.30%	2.80%	3.00%

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- Definition

The percentage of net product revenue to total net revenue from the sale of goods during year end.

+ References

No definition available.

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- Definition

Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(a))

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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