Litigation Escrow Deposit

No definition available.

Name:	mo_LitigationEscrowDeposit
Namespace Prefix:	mo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Interest expense (income) directly attributable to an award in settlement of litigation.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(6))
-SubTopic 10
-Topic 220
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

+ Details

Name:	us-gaap_LitigationSettlementInterest
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-1

Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-10

+ Details

Name:	us-gaap_LossContingencyAccrualAtCarryingValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of cash outflow reducing loss contingency liability.

+ References

+ Details

Name:	us-gaap_LossContingencyAccrualPayments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

Name:	us-gaap_LossContingencyAccrualRollForward
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of damages paid to the plaintiff in the legal matter.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-9

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-4

+ Details

Name:	us-gaap_LossContingencyDamagesPaidValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of loss (reversal of loss) recognized for loss contingency liability. Includes, but is not limited to, effect of revision in previously reported estimate.

+ References

+ Details

Name:	us-gaap_LossContingencyLossInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=mo_InterestExpenseRelatedToLitigationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_LitigationCaseAxis=mo_TobaccoandHealthJudgmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=mo_LitigationCasesResultsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_LitigationCaseAxis=mo_JUULMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_LitigationCaseAxis=mo_EngleProgenyCasesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LitigationStatusAxis=us-gaap_PendingLitigationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=mo_PhilipMorrisUSAMember
Namespace Prefix:
Data Type:	na
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- Details

Name:	us-gaap_StatementOfFinancialPositionLocationBalanceAxis=us-gaap_Assets
Namespace Prefix:
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Contingencies (Judgments Paid and Provisions for Tobacco and Health Litigation) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended	21 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2026
Loss Contingency Accrual [Roll Forward]
Accrued liability for tobacco and health and certain other litigation items at beginning of period	$ 63	$ 118	$ 71	$ 96	$ 95
Payments	(2)	(28)	(12)	(46)
Accrued liability for tobacco and health and certain other litigation items at end of period	156	95	156	95	156	$ 156
Related Interest Costs [Member]
Loss Contingency Accrual [Roll Forward]
Provision related to litigation recorded	24	0	24	4
Tobacco and Health Judgment [Member]
Loss Contingency Accrual [Roll Forward]
Judgments paid (approximately)						1,200
Litigation settlement interest (approximately)						245
Tobacco and Health Judgment [Member] \| Tobacco and Health Litigation [Member]
Loss Contingency Accrual [Roll Forward]
Provision related to litigation recorded	67	4	69	40
JUUL [Member] \| Tobacco and Health Litigation [Member]
Loss Contingency Accrual [Roll Forward]
Provision related to litigation recorded	4	$ 1	4	$ 1
Engle Progeny Cases [Member]
Loss Contingency Accrual [Roll Forward]
Judgments paid (approximately)						454
Litigation settlement interest (approximately)						62
Pending Litigation [Member] \| Philip Morris USA \| Location, Statement of Financial Position, Balance [Axis]: us-gaap:Assets
Loss Contingency Accrual [Roll Forward]
Security posted for appeal of judgments	$ 10		$ 10		$ 10	$ 10