Condensed Consolidating Financial Information (Condensed Consolidating Statements of Cash Flows) (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018
Cash Provided by (Used In) Operating Activities
Net cash provided by (used in) operating activities	$ 2,392	$ 3,850
Cash Provided by (Used in) Investing Activities
Capital expenditures	(79)	(72)
Investment in Cronos	(1,832)
Investment in consolidated subsidiaries	0	0
Other, net	(65)	(9)
Net cash provided by (used in) investing activities	(1,976)	(81)
Cash Provided by (Used in) Financing Activities
Repayment of short-term borrowings	(12,800)	0
Long-term debt issued	16,265	0
Repurchases of common stock	(346)	(950)
Dividends paid on common stock	(3,001)	(2,585)
Changes in amounts due to/from Altria and subsidiaries	0	0
Cash dividends paid to parent	0	0
Other	(131)	(25)
Net cash provided by (used in) financing activities	(13)	(3,560)
Cash, cash equivalents and restricted cash:
Increase (decrease)	403	209
Balance at beginning of period	1,433	1,314
Balance at end of period	1,836	1,523
Reportable Legal Entities [Member] \| Altria Group, Inc. [Member]
Cash Provided by (Used In) Operating Activities
Net cash provided by (used in) operating activities	3,829	2,681
Cash Provided by (Used in) Investing Activities
Capital expenditures	0	0
Investment in Cronos	0
Investment in consolidated subsidiaries	(1,951)	(176)
Other, net	22	8
Net cash provided by (used in) investing activities	(1,929)	(168)
Cash Provided by (Used in) Financing Activities
Repayment of short-term borrowings	(12,800)
Long-term debt issued	16,265
Repurchases of common stock	(346)	(950)
Dividends paid on common stock	(3,001)	(2,585)
Changes in amounts due to/from Altria and subsidiaries	(1,410)	1,233
Cash dividends paid to parent	0	0
Other	(121)	(21)
Net cash provided by (used in) financing activities	(1,413)	(2,323)
Cash, cash equivalents and restricted cash:
Increase (decrease)	487	190
Balance at beginning of period	1,277	1,203
Balance at end of period	1,764	1,393
Reportable Legal Entities [Member] \| PM USA [Member]
Cash Provided by (Used In) Operating Activities
Net cash provided by (used in) operating activities	2,078	3,549
Cash Provided by (Used in) Investing Activities
Capital expenditures	(20)	(10)
Investment in Cronos	0
Investment in consolidated subsidiaries	0	0
Other, net	1	0
Net cash provided by (used in) investing activities	(19)	(10)
Cash Provided by (Used in) Financing Activities
Repayment of short-term borrowings	0
Long-term debt issued	0
Repurchases of common stock	0	0
Dividends paid on common stock	0	0
Changes in amounts due to/from Altria and subsidiaries	1,269	(1,209)
Cash dividends paid to parent	(3,388)	(2,298)
Other	0	0
Net cash provided by (used in) financing activities	(2,119)	(3,507)
Cash, cash equivalents and restricted cash:
Increase (decrease)	(60)	32
Balance at beginning of period	100	62
Balance at end of period	40	94
Reportable Legal Entities [Member] \| Non-Guarantor Subsidiaries [Member]
Cash Provided by (Used In) Operating Activities
Net cash provided by (used in) operating activities	491	595
Cash Provided by (Used in) Investing Activities
Capital expenditures	(59)	(62)
Investment in Cronos	(1,832)
Investment in consolidated subsidiaries	0	0
Other, net	(88)	(17)
Net cash provided by (used in) investing activities	(1,979)	(79)
Cash Provided by (Used in) Financing Activities
Repayment of short-term borrowings	0
Long-term debt issued	0
Repurchases of common stock	0	0
Dividends paid on common stock	0	0
Changes in amounts due to/from Altria and subsidiaries	2,092	152
Cash dividends paid to parent	(618)	(677)
Other	(10)	(4)
Net cash provided by (used in) financing activities	1,464	(529)
Cash, cash equivalents and restricted cash:
Increase (decrease)	(24)	(13)
Balance at beginning of period	56	49
Balance at end of period	32	36
Total Consolidating Adjustments [Member]
Cash Provided by (Used In) Operating Activities
Net cash provided by (used in) operating activities	(4,006)	(2,975)
Cash Provided by (Used in) Investing Activities
Capital expenditures	0	0
Investment in Cronos	0
Investment in consolidated subsidiaries	1,951	176
Other, net	0	0
Net cash provided by (used in) investing activities	1,951	176
Cash Provided by (Used in) Financing Activities
Repayment of short-term borrowings	0
Long-term debt issued	0
Repurchases of common stock	0	0
Dividends paid on common stock	0	0
Changes in amounts due to/from Altria and subsidiaries	(1,951)	(176)
Cash dividends paid to parent	4,006	2,975
Other	0	0
Net cash provided by (used in) financing activities	2,055	2,799
Cash, cash equivalents and restricted cash:
Increase (decrease)	0	0
Balance at beginning of period	0	0
Balance at end of period	$ 0	$ 0

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