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7. Stockholders' Equity Treasury Shares (Details) (USD $) In Millions, except Share data, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Equity, Class of Treasury Stock [Line Items] |  |
Stock Repurchase Program, Authorized Amount | 18.0 us-gaap_StockRepurchaseProgramAuthorizedAmount1 |
Stock Repurchase Program, Remaining Authorized Repurchase Amount | 3.3 us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1 |
Treasury Class-A [Member] |  |
Equity, Class of Treasury Stock [Line Items] |  |
Treasury Stock, Shares | 122 us-gaap_TreasuryStockShares / us-gaap_StatementClassOfStockAxis = bio_TreasuryClassAMember | 122 us-gaap_TreasuryStockShares / us-gaap_StatementClassOfStockAxis = bio_TreasuryClassAMember
Treasury Class B [Member] |  |
Equity, Class of Treasury Stock [Line Items] |  |
Treasury Stock, Shares | 917 us-gaap_TreasuryStockShares / us-gaap_StatementClassOfStockAxis = bio_TreasuryClassBMember | 917 us-gaap_TreasuryStockShares / us-gaap_StatementClassOfStockAxis = bio_TreasuryClassBMember

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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
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- Definition Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends. + 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 210.5-02.28,29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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