Divestiture - Additional Information (Detail) (Discovery Labware [Member], USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended
Oct. 31, 2012	Jun. 30, 2013
Discovery Labware [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of productive assets	$ 740
Additional payment received from the sale		16
Pre-tax gain on sale	577
After-tax gain on sale	355
Amount of goodwill derecognized	$ 17

Pretax adjustment to an amount previously reported in discontinued operations that is directly related to the disposal of the component in a prior period. Examples of circumstances leading to such adjustments include the resolution of contingencies relating to the terms of the disposal transaction or relating to the operations of the component prior to its disposal, and the settlement of certain employee benefit plan obligations.

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Amount of gain (loss), before tax expense or benefit and not previously recognized, resulting from the sale of a business component.

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Amount of gain (loss), after tax expense or benefit and not previously recognized, resulting from the sale of a business component.

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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

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