EBP, Change in Net Asset Available for Benefit, Participant Loans, Transfer to (from) Plan

No definition available.

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- Definition

EBP, Employer Contribution, Eligible Age for Catch-up Contributions

+ References

No definition available.

+ Details

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- Definition

EBP, Employer Contribution, Matching, Retirement Eligible, Age

+ References

No definition available.

+ Details

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- Definition

EBP, Employer Contribution, Matching, Retirement Eligible, Minimum Years of Service

+ References

No definition available.

+ Details

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- Definition

Company contribution and/ or investment earning percentage vesting to the participant in Company Matching Contributions, Fixed Rate Contributions, Discretionary Profit-Sharing Contributions, Qualified Non-Elective Contributions, and Disability Contributions, upon completion of minimum service period or attainment of maximum vesting age

+ References

No definition available.

+ Details

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- Definition

EBP, Employer Contribution Vesting Service Period

+ References

No definition available.

+ Details

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- Definition

EBP, Mandatory Small Benefit Cashout Amount

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

EBP, Note Receivable From Participant, Account, Primary Residence, Maximum Borrowing Term

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Note Receivable From Participant, General Loan, Maximum Borrowing Term

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Note Receivable from Participant, Termination of Employment, Repayment Period

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
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Period Type:	duration

- Definition

EBP, Participant Contribution, After Tax, Maximum Annual Contribution to Eligible Compensation, Percentage

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Participant Contribution, Automatic, Deferral Enrollment Period

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
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Period Type:	instant

- Definition

EBP, Participant Contributions Vesting Percentage

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
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Period Type:	duration

- Definition

EBP, Participant Loan, Basis Spread On Variable Rate

+ References

No definition available.

+ Details

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Namespace Prefix:	pfe_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of increase in net asset available for benefit from cash contribution from employer of participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

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Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of net asset available for benefit transferred to (from) employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) from (to) external plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478873/962-325-55-17

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-05(a)(Schedule III))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478416/962-205-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 45
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477063/962-205-45-8

+ Details

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Balance Type:	debit
Period Type:	duration

- 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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478416/962-205-50-1

+ Details

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Period Type:	duration

- Definition

Percentage of employer matching contribution on eligible participant contribution to employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

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Namespace Prefix:	us-gaap-ebp_
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Balance Type:	na
Period Type:	duration

- Definition

Percentage of participant compensation eligible for employer matching contribution for participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

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Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of plan asset, in forfeited nonvested account, no longer allocated to participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

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Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of decrease in forfeited nonvested account of employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) from employer contribution.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478873/962-325-55-17

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (j)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478416/962-205-50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-04(5)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of maximum account balance that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) can borrow.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Percentage of maximum account balance that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) can borrow to total participant account balance.

+ References

+ Details

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Period Type:	instant

- Definition

Amount of minimum account balance that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) can borrow.

+ References

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Percentage of eligible compensation contributed for participant automatically enrolled in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Interest rate on participant loan in schedule of asset held for investment of employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Employee Retirement Income Security Act of 1974
-Number 2520
-Section 103
-Subsection 10
-Paragraph b
-Subparagraph (1)(i)(D)
-Publisher DOL-EBSA

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-05(a)(Schedule I))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Description of the Plan and Recent Transactions and Events (Details) $ in Thousands		1 Months Ended				12 Months Ended
	Feb. 27, 2024 USD ($)	Feb. 28, 2026 USD ($)	Jan. 31, 2026 USD ($)	Feb. 28, 2025 USD ($)	Jan. 31, 2025 USD ($)	Dec. 31, 2025 USD ($) year	Dec. 31, 2024 USD ($)	Jan. 01, 2025 USD ($)	Jan. 01, 2022 year
Pfizer Savings Plan
EBP, Description of Plan [Line Items]
Transfers into the Plan	$ 564,900
Participant loans transferred to the plan	$ 2,400
Mandatory small benefit cashout amount								$ 7
Maximum annual compensation to total compensation, percentage						30.00%
Eligible age for catch-up contributions \| year						50
Employer contribution, matching, retirement age \| year									65
Company matching contributions					$ 45,700
Participant contributions vesting percentage						1
Forfeitures						$ 2,500	$ 2,200
Reduction of company contributions from forfeitures						$ 12,000
Participant contribution, automatic deferral enrollment period						31 days
Participant contribution, automatic deferral rate						6.00%
Basis spread on variable rate						0.01
Minimum loan amount						$ 1
Maximum loan, to total account, percentage						50.00%
Maximum loan amount						$ 50
General loan, loan term						5 years
Primary residence, loan term						15 years
Note receivable from participant, termination of employment, repayment period						90 days
Pfizer Savings Plan \| Contributions, Tranche One
EBP, Description of Plan [Line Items]
Matching percentage						3.00%
Participant compensation matched, percentage						100.00%
Pfizer Savings Plan \| Contributions, Tranche Two
EBP, Description of Plan [Line Items]
Matching percentage						3.00%
Participant compensation matched, percentage						50.00%
Pfizer Savings Plan \| Subsequent Event
EBP, Description of Plan [Line Items]
Company matching contributions			$ 37,800
Pfizer Savings Plan \| Retirement Eligible Scenario One
EBP, Description of Plan [Line Items]
Employer contribution, matching, retirement age \| year									62
Retirement eligible, minimum years of service									5 years
Pfizer Savings Plan \| Retirement Eligible Scenario Two
EBP, Description of Plan [Line Items]
Employer contribution, matching, retirement age \| year									55
Retirement eligible, minimum years of service									10 years
Pfizer Savings Plan \| Minimum
EBP, Description of Plan [Line Items]
Interest rates						3.25%	3.25%
Pfizer Savings Plan \| Maximum
EBP, Description of Plan [Line Items]
Matching percentage						6.00%
Interest rates						10.50%	10.50%
Pfizer Savings Plan - Retirement Savings Contribution
EBP, Description of Plan [Line Items]
Employer contribution, matching, retirement age \| year									65
Company matching contributions				$ 341,100
Employer contribution vesting percentage						100.00%
Employer contribution vesting service period						3 years
Pfizer Savings Plan - Retirement Savings Contribution \| Subsequent Event
EBP, Description of Plan [Line Items]
Company matching contributions		$ 342,300
Pfizer Savings Plan - Retirement Savings Contribution \| Retirement Eligible Scenario One
EBP, Description of Plan [Line Items]
Employer contribution, matching, retirement age \| year									62
Retirement eligible, minimum years of service									5 years
Pfizer Savings Plan - Retirement Savings Contribution \| Retirement Eligible Scenario Two
EBP, Description of Plan [Line Items]
Employer contribution, matching, retirement age \| year									55
Retirement eligible, minimum years of service									10 years