Available For Sale Investment Ownership Percentage.

No definition available.

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- Definition

This item represents the net total realized and unrealized gain (loss) included in earnings for the period, net of tax, as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholder's equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any gains (losses) realized, net of tax, during the period from the sale of investments accounted for under the cost method of accounting and losses recognized for other than temporary impairments (OTTI) of the subject investments.

+ References

No definition available.

+ Details

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- Definition

Gain (Loss) on investments Net of tax Per Share Basic

+ References

No definition available.

+ Details

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- Definition

GaIn (Loss) on Investments Net of Tax Per Share Diluted

+ References

No definition available.

+ Details

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- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (b)

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- Definition

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.2)

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Period Type:	instant

- Definition

Amount of unrealized gain before deducting unrealized loss on investments in debt and equity securities classified as available-for-sale securities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563

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Period Type:	duration

- Definition

This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any gains (losses) realized during the period from the sale of investments accounted for under the cost method of accounting and losses recognized for other than temporary impairments (OTTI) of the subject investments.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

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-Section 45

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Article 5

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+ Details

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- Definition

The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

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-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (a),(b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

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Financial Instruments Measured at Fair Value - AFS (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	12 Months Ended
	Sep. 27, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
Proceeds from Sale of Available-for-sale Securities		$ 40,542	$ 0	$ 0
Gain on sale of investment		29,743us-gaap_GainLossOnInvestments	0us-gaap_GainLossOnInvestments	0us-gaap_GainLossOnInvestments
Gain (Loss) on investments, Net Of Tax	18,269arw_GainLossoninvestmentsNetOfTax	18,269arw_GainLossoninvestmentsNetOfTax	0arw_GainLossoninvestmentsNetOfTax	0arw_GainLossoninvestmentsNetOfTax
Gain (Loss) on investments Net of tax Per Share Basic	$ 0.19	$ 0.19
GaIn (Loss) on Investments Net of Tax Per Share Diluted	$ 0.18	$ 0.18
Marubun [Member]
Schedule of Available-for-sale Securities [Line Items]
Available For Sale Investment Ownership Percentage		8.40%
Cost basis		10,016	10,016
Unrealized holding gain		6,174	2,709
Fair value, available-for-sale securities		16,190	12,725
WPG [Member]
Schedule of Available-for-sale Securities [Line Items]
Available For Sale Investment Ownership Percentage		1.90%
Cost basis			10,798
Unrealized holding gain			24,903
Fair value, available-for-sale securities			35,701
Mutual Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost basis		16,233	15,614
Unrealized holding gain		5,686	5,817
Fair value, available-for-sale securities		21,919	21,431
Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value, available-for-sale securities		38,109	69,857
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value, available-for-sale securities		38,109	69,857
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value, available-for-sale securities		0	0
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value, available-for-sale securities		$ 0	$ 0