| **Acquisitions, Divestitures, Collaborative Arrangement and Equity-Method Investment - Narrative (Detail) (USD $)Share data in Thousands, unless otherwise specified**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          | 3 Months Ended | 9 Months Ended |            |     |                |     | 3 Months Ended | 9 Months Ended |                |             | 0 Months Ended |        | 0 Months Ended | 3 Months Ended | 9 Months Ended | 0 Months Ended | 3 Months Ended | 9 Months Ended |                |                |              |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------|----------------|------------|-----|----------------|-----|----------------|----------------|----------------|-------------|----------------|--------|----------------|----------------|----------------|----------------|----------------|----------------|----------------|----------------|--------------|
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| **Significant Acquisitions and Disposals [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |           |                |       |     |           |     |           |                |           |        |           |   |           |           |           |           |           |           |           |           |         |   |  |   |  |   |  |   |   |   |   |   |   |   |   |   |   |   |
| Business combination, consideration transferred, including equity interest in acquiree held prior to combination                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |           |                |       |     |           |     |           |                |           |        |           |   |           |           |           |           |           |           |           |           |         |   |  |   |  |   |  |   |   |   |   | $ 442,000,000 |   |   |   |   |   |   |
| Payments to acquire businesses, gross                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |           |                |       |     |           |     |           |                |           |        |           |   |           |           |           |           |           |           |           |           |         |   |  |   |  |   |  |   |   |   |   | 278,000,000 |   |   |   |   |   |   |
| Business combination, contingent consideration, liability                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |           |                |       |     |           |     |           |                |           |        |           |   |           |           |           |           |           |           |           |           |         |   |  |   |  |   |  |   |   |   |   | 164,000,000 |   |   |   |   |   |   |
| Business combination, recognized identifiable assets acquired, goodwill, and liabilities assumed, net                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |           |                |       |     |           |     |           |                |           |        |           |   |           |           |           |           |           |           |           |           |         |   |  |   |  |   |  |   |   |   |   | 519,000,000 |   |   |   |   |   |   |
| Identifiable intangible assets, excluding in-process research and development                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |           |                |       |     |           |     |           |                |           |        |           |   |           |           |           |           |           |           |           |           |         |   |  |   |  |   |  |   |   |   |   |   |   |   | 474,000,000 | 45,000,000 |   |   |
| Business combination, recognized identifiable assets acquired and liabilities assumed, deferred tax liabilities noncurrent                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |           |                |       |     |           |     |           |                |           |        |           |   |           |           |           |           |           |           |           |           |         |   |  |   |  |   |  |   |   |   |   | 166,000,000 |   |   |   |   | 69,000,000 | 94,000,000 |
| Goodwill                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | 42,400,000,000 |                |       |     | 42,400,000,000 |     |           |                | 43,661,000,000 |        |           |   |           |           |           |           |           |           |           |           |         |   |  |   |  |   |  |   |   |   |   | 89,000,000 |   |   |   |   | 192,000,000 | 322,000,000 |
| Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |           |                |       |     |           |     |           |                |           |        |           |   |           |           |           |           |           |           |           |           |         |   |  |   |  |   |  |   |   |   |   |   | 128,000,000 | 109,000,000 |   |   |   |   |
| Identifiable intangible assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |           |                |       |     |           |     |           |                |           |        |           |   |           |           |           |           |           |           |           |           |         |   |  |   |  |   |  |   |   |   |   |   |   |   |   |   | 181,000,000 | 362,000,000 |
| Noncontrolling interest, ownership percentage by noncontrolling owners                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |           |                |       |     |           |     |           |                |           |        |           |   |           |           |           |           |           |           |           |           |         |   |  |   |  |   |  | 19.80% |   |   |   |   |   |   |   |   |   |   |
| Noncontrolling Interest, Ownership Percentage by Parent                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |           |                |       |     |           |     |           |                |           |        |           |   |           |           |           |           | 80.20%         |           |           |           |         |   |  |   |  |   |  |   |   |   |   |   |   |   |   |   |   |   |
| Long-term Debt, Gross                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |           |                |       |     |           |     |           |                |           |        |           |   |           |           |           |           |           |           |           |           |         |   |  |   |  |   |  |   |   | 3,650,000,000 |   |   |   |   |   |   |   |   |
| Initial public offering, long-term debt assumed, parent                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |           |                |       |     |           |     |           |                |           |        |           |   |           |           |           |           |           |           |           |           |         |   |  |   |  |   |  |   |   | 1,000,000,000 |   |   |   |   |   |   |   |   |
| Cash Proceeds From Exchange of Stock                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |           |                |       |     |           |     |           |                |           |        |           |   |           |           |           |           |           |           |           |           |         |   |  |   |  |   |  |   |   | 2,600,000,000 |   |   |   |   |   |   |   |   |
| Initial public offering, cash proceeds received, parent                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |           |                |       |     |           |     |           |                |           |        |           |   |           |           |           |           |           | 6,100,000,000  |           |           |         |   |  |   |  |   |  |   |   | 2,650,000,000 |   |   |   |   |   |   |   |   |
| Subsidiary or equity method investee, cumulative number of shares issued for all transactions                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |           |                |       |     |           |     |           |                |           |        |           |   |           |           |           |           |           |           |           |           |         |   |  |   |  |   |  | 99,015 | 405,117 |   | 400,985 |   |   |   |   |   |   |   |
| Repayments of Short-term Debt                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |           |                |       |     |           |     |           |                |           |        |           |   |           |           |           |           |           |           |           |           |         |   |  |   |  |   |  | 2,500,000,000 |   |   |   |   |   |   |   |   |   |   |
| Proceeds from issuance of common stock                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |           |                |       |     |           |     |           |                |           |        |           |   |           |           |           |           |           |           |           |           |         |   |  |   |  |   |  | 2,300,000,000 |   |   |   |   |   |   |   |   |   |   |
| Treasury Stock, Value                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 63,272,000,000 |                |       |     | 63,272,000,000 |     |           |                | 40,122,000,000 |        |           |   |           |           |           |           |           |           | 11,400,000,000 |           |         |   |  |   |  |   |  |   |   |   |   |   |   |   |   |   |   |   |
| Gain on disposal of discontinued operations––net of tax                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | (25,000,000)   |                | 0          |     | 10,393,000,000 |     | 0              |                |           |        |           |   |           |           |           |           | 10,400,000,000 |           |           |           | (25,000,000) | 0 | [1] | 10,393,000,000 | [1] | 0 | [1] |   |   |   |   |   |   |   |   |   |   |   |
| Administrative Service Period                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |           |                |       |     |           |     |           |                |           |        |           |   |           |           |           |           |           |           | 24 months      |           |         |   |  |   |  |   |  |   |   |   |   |   |   |   |   |   |   |   |
| Manufacturing Service Period                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |           |                |       |     |           |     |           |                |           |        |           |   |           |           |           |           |           |           | 5 years        |           |         |   |  |   |  |   |  |   |   |   |   |   |   |   |   |   |   |   |
| Sale price for discontinued operation                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |           |                |       |     |           |     |           |                |           |        |           |   |           |           |           |           |           |           |           | 11,850,000,000 |         |   |  |   |  |   |  |   |   |   |   |   |   |   |   |   |   |   |
| Net gains on asset disposals                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | 46,000,000     |                | 21,000,000 |     | 100,000,000    |     | 45,000,000     |                |           |        |           |   |           |           |           |           |           |           |           | 4,800,000,000  |         |   |  |   |  |   |  |   |   |   |   |   |   |   |   |   |   |   |
| Collaborative Arrangement, Payments Received                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |           |                |       |     | 60,000,000     |     |           |                |           |        |           |   |           |           |           |           |           |           |           |           |         |   |  |   |  |   |  |   |   |   |   |   |   |   |   |   |   |   |
| Collaborative Arrangement, Collaborator's Revenue and Expense Ownership Percentage                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |           |                |       |     | 60.00%         |     |           |                |           |        |           |   |           |           |           |           |           |           |           |           |         |   |  |   |  |   |  |   |   |   |   |   |   |   |   |   |   |   |
| Collaborative Arrangement, Company's Revenue and Expense Ownership Percentage                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |           |                |       |     | 40.00%         |     |           |                |           |        |           |   |           |           |           |           |           |           |           |           |         |   |  |   |  |   |  |   |   |   |   |   |   |   |   |   |   |   |
| Equity method investment summarized financial information, equity                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |           |                |       |     |           |     |           |                |           | 250,000,000 |           |   |           |           |           |           |           |           |           |           |         |   |  |   |  |   |  |   |   |   |   |   |   |   |   |   |   |   |
| Equity method investment, summarized financial information, current assets, cash                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |           |                |       |     |           |     |           |                |           |        |           |   |           |           | 122,500,000    |           |           |           |           |           |         |   |  |   |  |   |  |   |   |   |   |   |   |   |   |   |   |   |
| Equity method investment, ownership percentage                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |           |                |       |     |           |     |           |                |           |        | 76.50%         | 77.40% | 13.50%         | 49.00%         |           | 12.60%         |           |           |           |           |         |   |  |   |  |   |  |   |   |   |   |   |   |   |   |   |   |   |
| Equity method investment, realized gain (loss)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |           |                |       |     |           |     |           |                |           |        |           |   | 31,000,000     |           |           |           |           |           |           |           |         |   |  |   |  |   |  |   |   |   |   |   |   |   |   |   |   |   |
| Gain associated with Pfizer's equity-method investment in China                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | 0              | [2]            | 0          | [2] | 459,000,000    | [2] | 0              | [2]            |           |        |           |   |           | 459,000,000    |           |           |           |           |           |           |         |   |  |   |  |   |  |   |   |   |   |   |   |   |   |   |   |   |
| Equity method investment, summarized financial information, gain (loss) associated with indirect retained interest                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |           |                |       |     |           |     |           |                |           |        |           |   |           | 225,000,000    |           |           |           |           |           |           |         |   |  |   |  |   |  |   |   |   |   |   |   |   |   |   |   |   |
| Fair value inputs, discount rate                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |           |                |       |     |           |     |           |                |           |        |           |   |           | 11.50%         |           |           |           |           |           |           |         |   |  |   |  |   |  |   |   |   |   |   |   |   |   |   |   |   |
| Equity method investment, aggregate cost                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |           |                |       |     |           |     |           |                |           |        |           |   |           | 1,400,000,000  |           |           |           |           |           |           |         |   |  |   |  |   |  |   |   |   |   |   |   |   |   |   |   |   |
| Equity method investment, underlying equity in net assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |           |                |       |     |           |     |           |                |           |        |           |   |           | $ 750,000,000  |           |           |           |           |           |           |         |   |  |   |  |   |  |   |   |   |   |   |   |   |   |   |   |   |
| Finite-lived intangible asset, useful life                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |           |                |       |     |           |     |           |                |           |        |           |   |           | 25 years       |           |           |           |           |           |           |         |   |  |   |  |   |  |   |   |   |   |   |   |   |   |   |   |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| [1]Includes the Animal Health (Zoetis) business for the nine months ended September 29, 2013 (through the disposal date) and for the three and nine months ended September 30, 2012, and the Nutrition business for the three and nine months ended September 30, 2012. For the three months ended September 29, 2013, includes certain post-close adjustments.[2]In the first nine months of 2013, represents the gain associated with the transfer of certain product rights to Hisun Pfizer, our equity-method investment in China. For additional information, see Note 2D. Acquisitions, Divestitures, Collaborative Arrangement and Equity-Method Investments: Equity-Method Investments. |

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Fair value at acquisition-date of the assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interests issued by the acquirer, including but not limited to,  instruments or interests issued or issuable in consideration for the business combination.
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Amount of (increase) decrease in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.
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Amount of liability recognized arising from contingent consideration in a business combination.
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Amount of deferred tax liability attributable to taxable temporary differences due after one year or the normal operating cycle, if longer, assumed at the acquisition date.
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The amount of identifiable intangible assets recognized as of the acquisition date.
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| - Definition
Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.
+ References
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.
+ References
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.
+ References
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of gain (loss), after tax expense or benefit and not previously recognized, resulting from the sale of a business component.
+ References
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
This element represents the aggregate cost of investments accounted for under the equity method of accounting.
+ References
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.
+ References
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of equity, including noncontrolling interest, reported by an equity method investment of the entity.
+ References
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| - Definition
This item represents the entity's ownership percentage in the investee multiplied by the investee's total equity.
+ References
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| - Definition
Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value.  For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.
+ References
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| - Definition
Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
+ References
No definition available.
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| - Definition
Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property.
+ References
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| - Definition
Amount of gain (loss) on sale or disposal of assets utilized in financial service operations.
+ References
No definition available.
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.
+ References
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| - Definition
The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.
+ References
No definition available.
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| - Definition
The parent entity's interest in net assets of the subsidiary, expressed as a percentage.
+ References
No definition available.
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| - Definition
The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.
+ References
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| - Definition
The cash outflow for a borrowing having initial term of repayment within one year or the normal operating cycle, if longer.
+ References
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| - Definition
Cumulative number of shares issued or sold by the subsidiary or equity method investee on all stock transactions.
+ References
No definition available.
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| - Definition
The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.
+ References
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