| **Earnings Per Share Attributable to Common Shareholders - Basic Numerator (Detail) (USD $)In Millions, unless otherwise specified**                                                                                                                                                                                          | 3 Months Ended | 9 Months Ended |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------|----------------|
||
| **EPS Numerator-Basic**                                                                                                                                                                                                                                                                                                       |           |                |   |  |   |  |   |  |
| Income from continuing operations                                                                                                                                                                                                                                                                                             | $ 3,110        |                | $ 2,325 |  | $ 8,028 |  | $ 6,982 |  |
| Less: Net income attributable to noncontrolling interests                                                                                                                                                                                                                                                                     | 6              |                | 11 |  | 22 |  | 31 |  |
| Income from continuing operations attributable to Pfizer Inc.                                                                                                                                                                                                                                                                 | 3,104          |                | 2,314 |  | 8,006 |  | 6,951 |  |
| Less: Preferred stock dividends-net of tax                                                                                                                                                                                                                                                                                    | 1              |                | 0 |  | 1 |  | 1 |  |
| Income from continuing operations attributable to Pfizer Inc. common shareholders                                                                                                                                                                                                                                             | 3,103          |                | 2,314 |  | 8,005 |  | 6,950 |  |
| Discontinued operations-net of tax                                                                                                                                                                                                                                                                                            | 104            |                | 1,424 |  | 249 |  | 1,619 |  |
| Net income attributable to Pfizer Inc. common shareholders                                                                                                                                                                                                                                                                    | $ 3,207        |                | $ 3,738 |  | $ 8,254 |  | $ 8,569 |  |
| **EPS Denominator**                                                                                                                                                                                                                                                                                                           |           |                |   |  |   |  |   |  |
| Weighted-average number of common shares outstanding-Basic                                                                                                                                                                                                                                                                    | 7,436          | [1]            | 7,770 | [1] | 7,483 | [1] | 7,877 | [1] |
| Common-share equivalents: stock options, stock issuable under employee compensation plans and convertible preferred stock                                                                                                                                                                                                     | 72             |                | 40 |  | 67 |  | 48 |  |
| Weighted-average number of common shares outstanding-Diluted                                                                                                                                                                                                                                                                  | 7,508          | [1]            | 7,810 | [1] | 7,550 | [1] | 7,925 | [1] |
| Stock options that had exercise prices greater than the average market price of our common stock issuable under employee compensation plans                                                                                                                                                                                   | 180            | [2]            | 342 | [2] | 180 | [2] | 279 | [2] |
|                                                                                                                                                                                                                                                                                                                               |
| [1]EPS amounts may not add due to rounding.[2]These common stock equivalents were outstanding for the three and nine months ended September 30, 2012 and October 2, 2011, but were not included in the computation of diluted EPS for those periods because their inclusion would have had an anti-dilutive effect. |

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| - Definition
This element represents the income or loss from continuing operations available to common stockholders which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items and cumulative effects of changes in accounting principles, but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests and preferred stock dividends declared or paid in the period, if any.
+ References
No definition available.
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| - Definition
Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.
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| - Definition
Equity impact of aggregate cash, stock, and paid-in-kind dividends declared for preferred shareholders during the period.
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| - Definition
Amount of income (loss) from continuing operations attributable to the parent. Also defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests.
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| - Definition
This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items, and noncontrolling interest.
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| - Definition
Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.
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| - Definition
Amount of Net Income (Loss) attributable to noncontrolling interest.
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| - Definition
Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).
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| - Definition
The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.
+ References
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.
+ References
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| - Definition
Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.
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