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Acquisitions (Details) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 31, 2016 USD ($) $ / shares | Oct. 01, 2016 USD ($) $ / shares | Jul. 02, 2016 USD ($) $ / shares | Apr. 02, 2016 USD ($) $ / shares | Dec. 31, 2015 USD ($) $ / shares | Sep. 26, 2015 USD ($) $ / shares | Jun. 27, 2015 USD ($) $ / shares | Mar. 28, 2015 USD ($) $ / shares | Dec. 31, 2016 USD ($) Acquisitions $ / shares | Dec. 31, 2015 USD ($) Acquisitions $ / shares | Dec. 31, 2014 USD ($) Acquisitions $ / shares
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sales |  | $ 6,442,891 |  | $ 5,936,092 |  | $ 5,972,101 |  | $ 5,474,177 |  | $ 6,751,342 | $ 5,698,304 | $ 5,829,989 | $ 5,002,385 | $ 23,825,261 |  | $ 23,282,020 |  | $ 22,768,674 |
Goodwill | [1] | 2,392,220 |  |  |  |  |  |  |  | 2,368,832 |  |  |  | 2,392,220 |  | 2,368,832 |  | 2,069,209 |
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  | 64,751 |  | 514,731 |  | 162,881 |
Net income attributable to shareholders |  | $ 164,518 |  | $ 117,727 |  | $ 134,270 |  | $ 106,235 |  | $ 158,492 | $ 109,244 | $ 123,932 | $ 106,058 | $ 522,750 |  | $ 497,726 |  | $ 498,045 |
Basic | $ / shares |  | $ 1.84 | [2] | $ 1.29 | [2] | $ 1.46 | [2] | $ 1.16 | [2] | $ 1.71 | $ 1.16 | $ 1.30 | $ 1.11 | $ 5.75 |  | $ 5.26 |  | $ 5.05 |
Diluted | $ / shares |  | $ 1.81 | [2] | $ 1.28 | [2] | $ 1.45 | [2] | $ 1.14 | [2] | $ 1.69 | $ 1.15 | $ 1.28 | $ 1.09 | $ 5.68 | [3] | $ 5.20 | [3] | $ 4.98 | [3]
Business Acquisition, Pro Forma Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 23,684,746 |  | $ 24,189,797 |
Business Acquisition, Pro Forma Net Income (Loss) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 500,554 |  | $ 518,859 |
Business Acquisition, Pro Forma Earnings Per Share, Basic | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 5.29 |  | $ 5.26 |
Business Acquisition, Pro Forma Earnings Per Share, Diluted | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 5.23 |  | $ 5.19 |
Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 years |  | 10 years |  |  |
immixGroup [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables |  |  |  |  |  |  |  |  |  | $ 145,130 |  |  |  |  |  | $ 145,130 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other |  |  |  |  |  |  |  |  |  | 24,181 |  |  |  |  |  | 24,181 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment |  |  |  |  |  |  |  |  |  | 1,569 |  |  |  |  |  | 1,569 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles |  |  |  |  |  |  |  |  |  | 5,313 |  |  |  |  |  | 5,313 |  |  |
Business Acquisition, Cost of Acquired Entity, Cash Paid |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 280,454 |  |  |
Cash Acquired from Acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 28,205 |  |  |
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 695,202 |  | 384,926 |  |  |
Goodwill |  |  |  |  |  |  |  |  |  | 183,840 |  |  |  |  |  | 183,840 |  |  |
Finite-Lived Customer Relationships, Gross |  |  |  |  |  |  |  |  |  | 46,400 |  |  |  |  |  | 46,400 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable |  |  |  |  |  |  |  |  |  | (136,921) |  |  |  |  |  | (136,921) |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities |  |  |  |  |  |  |  |  |  | (11,736) |  |  |  |  |  | (11,736) |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other |  |  |  |  |  |  |  |  |  | (5,527) |  |  |  |  |  | (5,527) |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net |  |  |  |  |  |  |  |  |  | 252,249 |  |  |  |  |  | 252,249 |  |  |
immixGroup [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Customer Relationships, Gross |  |  |  |  |  |  |  |  |  | 44,000 |  |  |  |  |  | $ 44,000 |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13 years |  |  |
immixGroup [Member] | Trade Names [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |
Finite-Lived Trade Names, Gross |  |  |  |  |  |  |  |  |  | $ 2,400 |  |  |  |  |  | $ 2,400 |  |  |
Series of Individually Immaterial Business Acquisitions [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt acquired from acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 84,487 |  |  |
Number of Businesses Acquired | Acquisitions |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 |  | 9 |  | 5 |
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 63,869 |  | $ 263,341 |  | $ 162,881 |
Business Acquisition, Contingent Consideration, at Fair Value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,853 |
Business Combination, Other Amounts Withheld |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 210 |
Data Modul AG [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  |  |  |  |  |  |  | 53.70% |  |  |  |  |  | 53.70% |  |  |
Additional Percentage Interest Acquired of Subsidiary Shares from Noncontrolling Interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.60% |  |  |
[1] | The total carrying value of goodwill of companies acquired for all periods in the table above is reflected net of $1,018,780 of accumulated impairment charges, of which $716,925 was recorded in the global components business segment and $301,855 was recorded in the global ECS business segment.
[2] | Quarterly net income per share is calculated using the weighted-average shares outstanding during each quarterly period, while net income per share for the full year is calculated using the weighted-average shares outstanding during the year. Therefore, the sum of the net income per share for each of the four quarters may not equal the net income per share for the full year.
[3] | Stock-based compensation awards for the issuance of 766 shares, 658 shares, and 294 shares for the years ended December 31, 2016, 2015, and 2014, respectively, were excluded from the computation of net income per share on a diluted basis as their effect was anti-dilutive.

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