Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statement of Cash Flows [Abstract]
Income tax credits	$ 419	$ 445	$ 335

Accrued Income Taxes, Transferable Income Tax Credits, Current

No definition available.

Name:	mo_AccruedIncomeTaxesTransferableIncomeTaxCreditsCurrent
Namespace Prefix:	mo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant