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Contingencies and Certain Commitments (Certain Matters Resolved And Commitments) (Details) - USD ($) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Aug. 31, 2017 | Dec. 31, 2018
Loss Contingencies [Line Items] |  |  |
Long-term purchase commitment, amount |  |  | $ 3,700
Repatriation tax liability | $ 15,200 |  | $ 15,000
Besponsa [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Research and development arrangement, aggregate payment obligation, term |  |  | 8 years
Research arrangement, fixed payment obligation |  |  | $ 422
Bosulif [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Research and development arrangement, aggregate payment obligation, term |  |  | 9 years
United States [Member] | Besponsa [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Research and development arrangement, aggregate payment obligation, term |  | 9 years |
Research arrangement, fixed payment obligation |  | $ 296 |
United States [Member] | Bosulif [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Research and development arrangement, aggregate payment obligation, term | 10 years |  |
Research arrangement, fixed payment obligation | $ 416 |  | $ 240

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- Definition Research and Development Arrangement, Aggregate Payment Obligation + References No definition available. + Details
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Namespace Prefix: | pfe_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Research and Development Arrangement, Aggregate Payment Obligation, Term + References No definition available. + Details
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- Definition Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Transition Tax For Accumulated Foreign Earnings, Provisional Liability + References No definition available. + Details
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Balance Type: | credit
Period Type: | instant

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- Definition The minimum amount the entity agreed to spend under the long-term purchase commitment. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Period Type: |

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- Details
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