Acquisition of King Pharmaceuticals Inc - Pro Forma Information (Detail) (King [Member], Pro Forma Consolidated Results [Member], USD $) In Millions, except Per Share data	3 Months Ended	9 Months Ended
Oct. 03, 2010	Oct. 02, 2011	Oct. 03, 2010
King [Member] \| Pro Forma Consolidated Results [Member]
Business Acquisition [Line Items]
Revenues	$ 16,335	$ 50,788	$ 50,749
Net income attributable to Pfizer Inc. common shareholders	$ 854	$ 8,769	$ 5,163
Diluted earnings per share attributable to Pfizer Inc. common shareholders	$ 0.11	$ 1.11	$ 0.64

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect, per diluted share of common stock for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect, for the period as if the business combination or combinations had been completed at the beginning of a period.

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