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Segment Reporting - Textual (Detail) (USD $)	3 Months Ended		9 Months Ended
Segment Reporting - Textual (Detail) (USD $)	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Segment Reporting Information [Line Items]
Number of operating segments			4
AZLP [Member]
Segment Reporting Information [Line Items]
Revenue from AstraZeneca LP	$ 255	$ 299	$ 664	$ 928

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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