Condensed Consolidating Financial Information (Condensed Consolidating Statements of Cash Flows) (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018
Cash Provided by (Used In) Operating Activities
Net cash provided by (used in) operating activities	$ 5,274	$ 6,566
Cash Provided by (Used in) Investing Activities
Capital expenditures	(160)	(132)
Investment in Cronos	(1,863)	0
Acquisition of businesses and assets	(421)	(15)
Investment in consolidated subsidiaries	0	0
Other, net	32	10
Net cash provided by (used in) investing activities	(2,412)	(137)
Cash Provided by (Used in) Financing Activities
Repayment of short-term borrowings	(12,800)	0
Long-term debt issued	16,265	0
Long-term debt repaid	(1,144)	0
Repurchases of common stock	(346)	(1,317)
Dividends paid on common stock	(4,498)	(3,909)
Changes in amounts due to/from Altria and subsidiaries	0	0
Cash dividends paid to parent	0	0
Other, net	(127)	(25)
Net cash provided by (used in) financing activities	(2,650)	(5,251)
Cash, cash equivalents and restricted cash:
Increase (decrease)	212	1,178
Balance at beginning of period	1,433	1,314
Balance at end of period	1,645	2,492
Reportable Legal Entities [Member] \| Altria Group, Inc. [Member]
Cash Provided by (Used In) Operating Activities
Net cash provided by (used in) operating activities	5,330	4,806
Cash Provided by (Used in) Investing Activities
Capital expenditures	0	0
Investment in Cronos	0
Acquisition of businesses and assets	0	0
Investment in consolidated subsidiaries	(2,446)	(191)
Other, net	22	8
Net cash provided by (used in) investing activities	(2,424)	(183)
Cash Provided by (Used in) Financing Activities
Repayment of short-term borrowings	(12,800)
Long-term debt issued	16,265
Long-term debt repaid	(1,144)
Repurchases of common stock	(346)	(1,317)
Dividends paid on common stock	(4,498)	(3,909)
Changes in amounts due to/from Altria and subsidiaries	3	1,767
Cash dividends paid to parent	0	0
Other, net	(122)	(21)
Net cash provided by (used in) financing activities	(2,642)	(3,480)
Cash, cash equivalents and restricted cash:
Increase (decrease)	264	1,143
Balance at beginning of period	1,277	1,203
Balance at end of period	1,541	2,346
Reportable Legal Entities [Member] \| PM USA [Member]
Cash Provided by (Used In) Operating Activities
Net cash provided by (used in) operating activities	4,862	5,801
Cash Provided by (Used in) Investing Activities
Capital expenditures	(26)	(33)
Investment in Cronos	0
Acquisition of businesses and assets	0	0
Investment in consolidated subsidiaries	0	0
Other, net	1	0
Net cash provided by (used in) investing activities	(25)	(33)
Cash Provided by (Used in) Financing Activities
Repayment of short-term borrowings	0
Long-term debt issued	0
Long-term debt repaid	0
Repurchases of common stock	0	0
Dividends paid on common stock	0	0
Changes in amounts due to/from Altria and subsidiaries	42	(1,565)
Cash dividends paid to parent	(4,938)	(4,166)
Other, net	0	0
Net cash provided by (used in) financing activities	(4,896)	(5,731)
Cash, cash equivalents and restricted cash:
Increase (decrease)	(59)	37
Balance at beginning of period	100	62
Balance at end of period	41	99
Reportable Legal Entities [Member] \| Non-Guarantor Subsidiaries [Member]
Cash Provided by (Used In) Operating Activities
Net cash provided by (used in) operating activities	1,009	1,123
Cash Provided by (Used in) Investing Activities
Capital expenditures	(134)	(99)
Investment in Cronos	(1,863)
Acquisition of businesses and assets	(421)	(15)
Investment in consolidated subsidiaries	0	0
Other, net	9	2
Net cash provided by (used in) investing activities	(2,409)	(112)
Cash Provided by (Used in) Financing Activities
Repayment of short-term borrowings	0
Long-term debt issued	0
Long-term debt repaid	0
Repurchases of common stock	0	0
Dividends paid on common stock	0	0
Changes in amounts due to/from Altria and subsidiaries	2,401	(11)
Cash dividends paid to parent	(989)	(998)
Other, net	(5)	(4)
Net cash provided by (used in) financing activities	1,407	(1,013)
Cash, cash equivalents and restricted cash:
Increase (decrease)	7	(2)
Balance at beginning of period	56	49
Balance at end of period	63	47
Total Consolidating Adjustments [Member]
Cash Provided by (Used In) Operating Activities
Net cash provided by (used in) operating activities	(5,927)	(5,164)
Cash Provided by (Used in) Investing Activities
Capital expenditures	0	0
Investment in Cronos	0
Acquisition of businesses and assets	0	0
Investment in consolidated subsidiaries	2,446	191
Other, net	0	0
Net cash provided by (used in) investing activities	2,446	191
Cash Provided by (Used in) Financing Activities
Repayment of short-term borrowings	0
Long-term debt issued	0
Long-term debt repaid	0
Repurchases of common stock	0	0
Dividends paid on common stock	0	0
Changes in amounts due to/from Altria and subsidiaries	(2,446)	(191)
Cash dividends paid to parent	5,927	5,164
Other, net	0	0
Net cash provided by (used in) financing activities	3,481	4,973
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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