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			9 Months Ended		12 Months Ended	24 Months Ended
	Sep. 30, 2026	Dec. 31, 2025	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2026
Loss Contingency Accrual [Roll Forward]
Accrued liability for tobacco and health and certain other litigation items at beginning of period	$ 156	$ 68	$ 95	$ 71	$ 96	$ 68
Payments	(38)		(30)	(50)	(76)
Accrued liability for tobacco and health and certain other litigation items at end of period	141	$ 71	68	141	68	141	$ 141
Related Interest Costs [Member]
Loss Contingency Accrual [Roll Forward]
Provision related to litigation recorded	7		0	31	4
Tobacco and Health Judgment [Member]
Loss Contingency Accrual [Roll Forward]
Judgments paid (approximately)							1,200
Litigation settlement interest (approximately)							249
Tobacco and Health Judgment [Member] \| Tobacco and Health Litigation [Member]
Loss Contingency Accrual [Roll Forward]
Provision related to litigation recorded	16		4	85	44
JUUL [Member] \| Tobacco and Health Litigation [Member]
Loss Contingency Accrual [Roll Forward]
Provision related to litigation recorded	0		$ (1)	4	$ 0
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