EBP, Additional Annual Contribution, Vesting Rate, Percentage

No definition available.

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Period Type:	duration

- Definition

EBP, Employer Contribution, Additional Contribution, Percentage

+ References

No definition available.

+ Details

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Namespace Prefix:	bmy_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Employer Contribution, Additional Contribution, Student Debt Repayment, Percentage

+ References

No definition available.

+ Details

Name:	bmy_EBPEmployerContributionAdditionalContributionStudentDebtRepaymentPercentage
Namespace Prefix:	bmy_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Employer Contribution, Maximum Vesting Age

+ References

No definition available.

+ Details

Name:	bmy_EBPEmployerContributionMaximumVestingAge
Namespace Prefix:	bmy_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Employer Contribution, Rule Of 70, Maximum Age

+ References

No definition available.

+ Details

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Namespace Prefix:	bmy_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Employer Contribution, Rule Of 70, Minimum Duration

+ References

No definition available.

+ Details

Name:	bmy_EBPEmployerContributionRuleOf70MinimumDuration
Namespace Prefix:	bmy_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Employer Contribution, Vesting Percentage

+ References

No definition available.

+ Details

Name:	bmy_EBPEmployerContributionVestingPercentage
Namespace Prefix:	bmy_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Employer Stock Fund, Maximum Investment, Percentage

+ References

No definition available.

+ Details

Name:	bmy_EBPEmployerStockFundMaximumInvestmentPercentage
Namespace Prefix:	bmy_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Forfeited Nonvested Account, Forfeiture Period

+ References

No definition available.

+ Details

Name:	bmy_EBPForfeitedNonvestedAccountForfeiturePeriod
Namespace Prefix:	bmy_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Forfeited Nonvested Account, Restoration of Lost Earnings

+ References

No definition available.

+ Details

Name:	bmy_EBPForfeitedNonvestedAccountRestorationOfLostEarnings
Namespace Prefix:	bmy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

EBP, Forfeited Nonvested Account, Vesting Percentage

+ References

No definition available.

+ Details

Name:	bmy_EBPForfeitedNonvestedAccountVestingPercentage
Namespace Prefix:	bmy_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Matching Contribution, Vesting Service Percentage

+ References

No definition available.

+ Details

Name:	bmy_EBPMatchingContributionVestingServicePercentage
Namespace Prefix:	bmy_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Matching Contribution, Vesting Service Period

+ References

No definition available.

+ Details

Name:	bmy_EBPMatchingContributionVestingServicePeriod
Namespace Prefix:	bmy_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

Name:	bmy_EBPNoteReceivableFromParticipantAccountPrimaryResidenceMaximumBorrowingTerm
Namespace Prefix:	bmy_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Participant Contribution, Aftertax, Maximum Annual Compensation to Total Contribution, Percentage

+ References

No definition available.

+ Details

Name:	bmy_EBPParticipantContributionAftertaxMaximumAnnualCompensationToTotalContributionPercentage
Namespace Prefix:	bmy_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Participant Contribution, Annual Benefit Catch Up Contribution, Percentage

+ References

No definition available.

+ Details

Name:	bmy_EBPParticipantContributionAnnualBenefitCatchUpContributionPercentage
Namespace Prefix:	bmy_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Participant Contribution, Annual Compensation to Total Compensation, Percentage

+ References

No definition available.

+ Details

Name:	bmy_EBPParticipantContributionAnnualCompensationToTotalCompensationPercentage
Namespace Prefix:	bmy_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Participant Contribution, Automatic Contribution, Enrollment Waiting Period

+ References

No definition available.

+ Details

Name:	bmy_EBPParticipantContributionAutomaticContributionEnrollmentWaitingPeriod
Namespace Prefix:	bmy_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Participant Contribution, Automatic Contribution Increase, Percentage

+ References

No definition available.

+ Details

Name:	bmy_EBPParticipantContributionAutomaticContributionIncreasePercentage
Namespace Prefix:	bmy_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Participant Contribution, Default Investment Alternative, Retirement Age

+ References

No definition available.

+ Details

Name:	bmy_EBPParticipantContributionDefaultInvestmentAlternativeRetirementAge
Namespace Prefix:	bmy_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Participant Contribution, Default Investment Alternative, Allocation Percentage

+ References

No definition available.

+ Details

Name:	bmy_EBPParticipantContributionsDefaultInvestmentAlternativeAllocationPercentage
Namespace Prefix:	bmy_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Record Keeping Fee, Per Participant, Per Year

+ References

No definition available.

+ Details

Name:	bmy_EBPRecordKeepingFeePerParticipantPerYear
Namespace Prefix:	bmy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

EBP, Termination Of Employment And Payment Of Benefits, Involuntary Cash Out Limit

+ References

No definition available.

+ Details

Name:	bmy_EBPTerminationOfEmploymentAndPaymentOfBenefitsInvoluntaryCashOutLimit
Namespace Prefix:	bmy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

EBP, Termination Of Employment And Payment Of Benefits, Maximum Annual Beneficiary Installment Period

+ References

No definition available.

+ Details

Name:	bmy_EBPTerminationOfEmploymentAndPaymentOfBenefitsMaximumAnnualBeneficiaryInstallmentPeriod
Namespace Prefix:	bmy_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Termination Of Employment And Payment Of Benefits, Maximum Annual Installment Period

+ References

No definition available.

+ Details

Name:	bmy_EBPTerminationOfEmploymentAndPaymentOfBenefitsMaximumAnnualInstallmentPeriod
Namespace Prefix:	bmy_
Data Type:	xbrli:durationItemType
Balance Type:	na
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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Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:stringItemType
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

Name:	us-gaap-ebp_EmployeeBenefitPlanEmployerContributionParticipantCompensationMatchedPercentage
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

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

+ 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 administrative expense.

+ References

Reference 1: 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 2: 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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Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

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

+ References

+ Details

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

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- 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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PROGRAM DESCRIPTION AND RELATED INFORMATION (Details) - EBP 002		12 Months Ended
	Jan. 01, 2026 USD ($)	Dec. 31, 2025 USD ($) age	Dec. 31, 2024 USD ($)
EBP, Description of Plan [Line Items]
Participant contribution, aftertax, maximum annual compensation to total contribution, percentage		25.00%
Participant contribution, automatic contribution, enrollment waiting period		45 days
Participant contributions, default investment alternative, allocation percentage		100.00%
Participant contribution, default investment alternative, retirement age \| age		65
Employer contribution, additional contribution, percentage		7.00%
Employer contribution, rule of 70, minimum duration		10 years
Employer stock fund, maximum investment, percentage		25.00%
Note receivable from participant, account, maximum borrowing, to total account, percentage		50.00%
Note receivable from participant, account, maximum borrowing, amount		$ 50,000
Note receivable from participant, account, borrowing term		5 years
Matching contribution, vesting service period		3 years
Additional annual contribution, vesting rate, percentage		20.00%
EBP, employer contribution, vesting percentage		100.00%
Employer contribution, maximum vesting age \| age		65
Forfeited nonvested account, forfeiture period		1 year
Forfeited nonvested account, decrease from administrative expense		$ 500,000	$ 0
Forfeited nonvested account		$ 2,600,000	$ 9,400,000
Employer contribution, additional contribution, minimum percentage		100.00%
Forfeited nonvested account, reallocated to participant		$ 11,500,000
Forfeited nonvested account, restoration of lost earnings		$ 400,000
Termination of employment and payment of benefits, maximum annual installment period		15 years
Termination of employment and payment of benefits, maximum annual beneficiary installment period		5 years
Termination of employment and payment of benefits, involuntary cash out limit		$ 7,000
Record keeping fee, per participant, per year		$ 31.50
Subsequent Event
EBP, Description of Plan [Line Items]
Record keeping fee, per participant, per year	$ 25.00
Student Debt Repayment, 2025 Program
EBP, Description of Plan [Line Items]
Employer contribution, additional contribution, student debt repayment, percentage		6.00%
Student Debt Repayment, 2026 Program
EBP, Description of Plan [Line Items]
Employer contribution, additional contribution, student debt repayment, percentage		7.00%
Matching Tear One
EBP, Description of Plan [Line Items]
Matching contribution, vesting service period		1 year
Matching contribution, vesting service percentage, year one		33.00%
Matching Tear Two
EBP, Description of Plan [Line Items]
Matching contribution, vesting service period		2 years
Matching contribution, vesting service percentage, year one		67.00%
Matching Tear Three
EBP, Description of Plan [Line Items]
Matching contribution, vesting service period		3 years
Matching contribution, vesting service percentage, year one		100.00%
Minimum
EBP, Description of Plan [Line Items]
Participant contribution, annual compensation to total compensation, percentage		2.00%
Participant contribution, automatic, deferral rate		6.00%
Participant contribution, automatic contribution increase, minimum percentage		1.00%
Participant contribution, annual benefit catch up contribution, percentage		1.00%
Employer contribution, additional contribution, percentage		3.00%
Maximum
EBP, Description of Plan [Line Items]
Participant contribution, annual compensation to total compensation, percentage		75.00%
Participant contribution, automatic, deferral rate		75.00%
Participant contribution, automatic contribution increase, minimum percentage		3.00%
Participant contribution, annual benefit catch up contribution, percentage		75.00%
Employer contribution, participant compensation matched, percentage		6.00%
Employer contribution, additional contribution, percentage		6.00%
Employer contribution, rule of 70, maximum age \| age		70