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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
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount	18.0us-gaap_StockRepurchaseProgramAuthorizedAmount1
Stock Repurchase Program, Remaining Authorized Repurchase Amount	3.3us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
Treasury Class-A [Member]
Equity, Class of Treasury Stock [Line Items]
Treasury Stock, Shares	122us-gaap_TreasuryStockShares / us-gaap_StatementClassOfStockAxis = bio_TreasuryClassAMember	122us-gaap_TreasuryStockShares / us-gaap_StatementClassOfStockAxis = bio_TreasuryClassAMember
Treasury Class B [Member]
Equity, Class of Treasury Stock [Line Items]
Treasury Stock, Shares	917us-gaap_TreasuryStockShares / us-gaap_StatementClassOfStockAxis = bio_TreasuryClassBMember	917us-gaap_TreasuryStockShares / us-gaap_StatementClassOfStockAxis = bio_TreasuryClassBMember

X

- Details

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Balance Type:	na
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- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount remaining of a stock repurchase plan authorized.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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X

- 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

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