Investments in Equity Securities (Investment in JUUL Narrative) (Details) shares in Millions	1 Months Ended		3 Months Ended			12 Months Ended
	Jan. 31, 2020	Dec. 31, 2018 USD ($)	Dec. 31, 2021 USD ($) director shares	Dec. 31, 2020 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2021 USD ($) director shares	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Sep. 30, 2020 USD ($)	Apr. 30, 2020
Investments [Line Items]
Equity securities without readily determinable fair value, upward price adjustment | $									$ 0
Equity securities without readily determinable fair value, downward price adjustment, cumulative amount | $									$ 0
Impairment of JUUL equity securities | $						$ 0	$ 2,600,000,000	$ 8,600,000,000
JUUL [Member]
Investments [Line Items]
Payments to acquire equity securities without readily determinable fair value | $		$ 12,800,000,000
Equity securities without readily determinable fair value, ownership percentage		35.00%	35.00%			35.00%				35.00%
Equity investment, fair value option, voting shares (in shares) | shares			42			42
Service agreement term						6 years
Non-compete release trigger period	12 months
Non-compete release trigger percentage of initial investment carrying value	10.00%
Equity securities without readily determinable fair value, quantitative assessment adjustment, annual amount | $		$ 12,800,000,000
Number of board members			7			7
Number of board members upon share conversion			9			9
Number of independent board members upon share conversion			3			3
Number of independent board members appointed by investor upon share conversion						1
Number of independent board members appointed by investee stockholders upon share conversion			2			2
Number of investor nominating committee designees			1			1
Number of directors designated by investor upon share conversion			2			2
Number of directors designated by JUUL shareholders other than Altria upon share conversion			3			3
Number of oversight committee directors designated by investor upon share conversion						2
Number of oversight committee chair directors designated by investor upon share conversion						1
Income (losses) from investments under fair value option | $				$ 100,000,000		$ 0	100,000,000	0
Estimated fair value of JUUL | $			$ 1,705,000,000	$ 1,705,000,000		$ 1,705,000,000	1,705,000,000
Impairment of JUUL equity securities | $			$ 4,100,000,000		$ 4,500,000,000		$ 2,600,000,000	8,600,000,000
Equity securities without readily determinable fair value, amount | $								$ 4,200,000,000