| **CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)In Millions, unless otherwise specified**                                                                                                                                                                                                                                                                                                                | Mar. 29, 2015                                                                        | Dec. 31, 2014 |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------|---------------|
| **Assets**                                                                                                                                                                                                                                                                                                                                                                                              |                                                                                 |               |   |  |
| Cash and cash equivalents                                                                                                                                                                                                                                                                                                                                                                               | $ 3,563us-gaap_CashAndCashEquivalentsAtCarryingValue                                 | [1]           | $ 3,343us-gaap_CashAndCashEquivalentsAtCarryingValue | [1] |
| Short-term investments                                                                                                                                                                                                                                                                                                                                                                                  | 24,145us-gaap_ShortTermInvestments                                                   | [1]           | 32,779us-gaap_ShortTermInvestments | [1] |
| Trade accounts receivable, less allowance for doubtful accounts: 2015—$444; 2014—$412                                                                                                                                                                                                                                                                                                     | 8,920us-gaap_AccountsReceivableNetCurrent                                            | [1]           | 8,669us-gaap_AccountsReceivableNetCurrent | [1] |
| Inventories                                                                                                                                                                                                                                                                                                                                                                                             | 5,786us-gaap_InventoryNet                                                            | [1]           | 5,663us-gaap_InventoryNet | [1] |
| Current deferred tax assets and other current tax assets                                                                                                                                                                                                                                                                                                                                                | 4,214pfe_DeferredTaxAssetsNetAndOtherTaxAssetsCurrent                                | [1]           | 4,498pfe_DeferredTaxAssetsNetAndOtherTaxAssetsCurrent | [1] |
| Other current assets                                                                                                                                                                                                                                                                                                                                                                                    | 2,815us-gaap_OtherAssetsCurrent                                                      | [1]           | 2,750us-gaap_OtherAssetsCurrent | [1] |
| Total current assets                                                                                                                                                                                                                                                                                                                                                                                    | 49,443us-gaap_AssetsCurrent                                                          | [1]           | 57,702us-gaap_AssetsCurrent | [1] |
| Long-term investments                                                                                                                                                                                                                                                                                                                                                                                   | 18,289us-gaap_LongTermInvestments                                                    | [1]           | 17,518us-gaap_LongTermInvestments | [1] |
| Property, plant and equipment, less accumulated depreciation                                                                                                                                                                                                                                                                                                                                            | 11,527us-gaap_PropertyPlantAndEquipmentNet                                           | [1]           | 11,762us-gaap_PropertyPlantAndEquipmentNet | [1] |
| Identifiable intangible assets, less accumulated amortization                                                                                                                                                                                                                                                                                                                                           | 34,334us-gaap_IntangibleAssetsNetExcludingGoodwill                                   | [1],[2]       | 35,166us-gaap_IntangibleAssetsNetExcludingGoodwill | [1],[2] |
| Goodwill                                                                                                                                                                                                                                                                                                                                                                                                | 41,854us-gaap_Goodwill                                                               | [1]           | 42,069us-gaap_Goodwill | [1] |
| Noncurrent deferred tax assets and other noncurrent tax assets                                                                                                                                                                                                                                                                                                                                          | 1,477pfe_DeferredTaxAssetsNetAndOtherTaxAssetsNoncurrent                             | [1]           | 1,544pfe_DeferredTaxAssetsNetAndOtherTaxAssetsNoncurrent | [1] |
| Other noncurrent assets                                                                                                                                                                                                                                                                                                                                                                                 | 3,716us-gaap_OtherAssetsNoncurrent                                                   | [1]           | 3,513us-gaap_OtherAssetsNoncurrent | [1] |
| Total assets                                                                                                                                                                                                                                                                                                                                                                                            | 160,640us-gaap_Assets                                                                | [1]           | 169,274us-gaap_Assets | [1] |
| **Liabilities and Equity**                                                                                                                                                                                                                                                                                                                                                                              |                                                                                 |               |   |  |
| Short-term borrowings, including current portion of long-term debt                                                                                                                                                                                                                                                                                                                                      | 6,555us-gaap_DebtCurrent                                                             | [1]           | 5,141us-gaap_DebtCurrent | [1] |
| Trade accounts payable                                                                                                                                                                                                                                                                                                                                                                                  | 2,724us-gaap_AccountsPayableCurrent                                                  | [1]           | 3,210us-gaap_AccountsPayableCurrent | [1] |
| Dividends payable                                                                                                                                                                                                                                                                                                                                                                                       | 0us-gaap_DividendsPayableCurrent                                                     | [1]           | 1,711us-gaap_DividendsPayableCurrent | [1] |
| Income taxes payable                                                                                                                                                                                                                                                                                                                                                                                    | 944us-gaap_TaxesPayableCurrent                                                       | [1]           | 531us-gaap_TaxesPayableCurrent | [1] |
| Accrued compensation and related items                                                                                                                                                                                                                                                                                                                                                                  | 1,679us-gaap_EmployeeRelatedLiabilitiesCurrent                                       | [1]           | 1,841us-gaap_EmployeeRelatedLiabilitiesCurrent | [1] |
| Other current liabilities                                                                                                                                                                                                                                                                                                                                                                               | 8,320us-gaap_OtherLiabilitiesCurrent                                                 | [1]           | 9,197us-gaap_OtherLiabilitiesCurrent | [1] |
| Total current liabilities                                                                                                                                                                                                                                                                                                                                                                               | 20,222us-gaap_LiabilitiesCurrent                                                     | [1]           | 21,631us-gaap_LiabilitiesCurrent | [1] |
| Long-term debt                                                                                                                                                                                                                                                                                                                                                                                          | 29,370us-gaap_LongTermDebtNoncurrent                                                 | [1]           | 31,541us-gaap_LongTermDebtNoncurrent | [1] |
| Pension benefit obligations, net                                                                                                                                                                                                                                                                                                                                                                        | 6,571us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent                          | [1]           | 7,885us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent | [1] |
| Postretirement benefit obligations, net                                                                                                                                                                                                                                                                                                                                                                 | 2,480us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent              | [1]           | 2,379us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent | [1] |
| Noncurrent deferred tax liabilities                                                                                                                                                                                                                                                                                                                                                                     | 24,474us-gaap_DeferredTaxLiabilitiesNoncurrent                                       | [1]           | 24,981us-gaap_DeferredTaxLiabilitiesNoncurrent | [1] |
| Other taxes payable                                                                                                                                                                                                                                                                                                                                                                                     | 4,293us-gaap_LiabilityForUncertainTaxPositionsNoncurrent                             | [1]           | 4,353us-gaap_LiabilityForUncertainTaxPositionsNoncurrent | [1] |
| Other noncurrent liabilities                                                                                                                                                                                                                                                                                                                                                                            | 5,644us-gaap_OtherLiabilitiesNoncurrent                                              | [1]           | 4,883us-gaap_OtherLiabilitiesNoncurrent | [1] |
| Total liabilities                                                                                                                                                                                                                                                                                                                                                                                       | 93,053us-gaap_Liabilities                                                            | [1]           | 97,652us-gaap_Liabilities | [1] |
| Preferred stock                                                                                                                                                                                                                                                                                                                                                                                         | 28us-gaap_PreferredStockValue                                                        | [1]           | 29us-gaap_PreferredStockValue | [1] |
| Common stock                                                                                                                                                                                                                                                                                                                                                                                            | 458us-gaap_CommonStockValue                                                          | [1]           | 455us-gaap_CommonStockValue | [1] |
| Additional paid-in capital                                                                                                                                                                                                                                                                                                                                                                              | 80,004us-gaap_AdditionalPaidInCapital                                                | [1]           | 78,977us-gaap_AdditionalPaidInCapital | [1] |
| Treasury stock                                                                                                                                                                                                                                                                                                                                                                                          | (79,100)us-gaap_TreasuryStockValue                                                   | [1]           | (73,021)us-gaap_TreasuryStockValue | [1] |
| Retained earnings                                                                                                                                                                                                                                                                                                                                                                                       | 74,471us-gaap_RetainedEarningsAccumulatedDeficit                                     | [1]           | 72,176us-gaap_RetainedEarningsAccumulatedDeficit | [1] |
| Accumulated other comprehensive loss                                                                                                                                                                                                                                                                                                                                                                    | (8,557)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax                       | [1]           | (7,316)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax | [1] |
| Total Pfizer Inc. shareholders’ equity                                                                                                                                                                                                                                                                                                                                                           | 67,304us-gaap_StockholdersEquity                                                     | [1]           | 71,301us-gaap_StockholdersEquity | [1] |
| Equity attributable to noncontrolling interests                                                                                                                                                                                                                                                                                                                                                         | 283us-gaap_MinorityInterest                                                          | [1]           | 321us-gaap_MinorityInterest | [1] |
| Total equity                                                                                                                                                                                                                                                                                                                                                                                            | 67,587us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | [1]           | 71,622us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | [1] |
| Total liabilities and equity                                                                                                                                                                                                                                                                                                                                                                            | $ 160,640us-gaap_LiabilitiesAndStockholdersEquity                                    | [1]           | $ 169,274us-gaap_LiabilitiesAndStockholdersEquity | [1] |
|                                                                                                                                                                                                                                                                                                                                                                                                         |
| [1]Amounts may not add due to rounding.[2]The decrease in identifiable intangible assets, less accumulated amortization, is primarily related to amortization, partially offset by assets acquired as part of the acquisition of Baxter's portfolio of marketed vaccines. For information about the assets acquired as part of the acquisition of Baxter's portfolio of marketed vaccines, see Note 2A. |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences expected to be realized or consumed within one year or operating cycle, if longer AND tax assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer.
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Deferred Tax Assets, Net, And Other Tax Assets, Noncurrent
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| - Definition
Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).
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| - Definition
Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.
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| - Definition
Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.
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| - Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.
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| - Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.
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| - Definition
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.
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| - Definition
Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.
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Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.
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| - Definition
Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences, netted by jurisdiction and classified as noncurrent.
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| - Definition
This represents the noncurrent liability recognized in the balance sheet that is associated with the defined benefit pension plans.
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Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).
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Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).
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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.
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| - Definition
Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.
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| - Definition
Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.
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| - Definition
Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.
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| - Definition
Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.
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| - Definition
Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.
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The noncurrent portion of the amount recognized for uncertain tax positions as of the balance sheet date.
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| - Definition
Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.
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The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).
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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).
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Aggregate carrying amount, as of the balance sheet date, of current assets not separately disclosed in the balance sheet. Current assets are expected to be realized or consumed within one year (or the normal operating cycle, if longer).
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Aggregate carrying amount, as of the balance sheet date, of noncurrent assets not separately disclosed in the balance sheet. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer).
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| - Definition
Aggregate carrying amount of current liabilities (due within one year or within the normal operating cycle if longer) not separately disclosed in the balance sheet. Includes costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered and of liabilities not separately disclosed.
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Aggregate carrying amount, as of the balance sheet date, of noncurrent obligations not separately disclosed in the balance sheet. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer).
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| - Definition
This represents the noncurrent liability recognized in the balance sheet that is associated with other postretirement defined benefit plans (excluding pension plans).
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| - Definition
Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.
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| - Definition
Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.
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The cumulative amount of the reporting entity's undistributed earnings or deficit.
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Investments which are intended to be sold in the short term (usually less than one year or the normal operating cycle, whichever is longer) including trading securities, available-for-sale securities, held-to-maturity securities, and other short-term investments not otherwise listed in the existing taxonomy.
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| - Definition
Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.
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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.
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Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).
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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.
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