| Cover Page Cover Page | Jul. 30, 2019 | Jul. 29, 2019 |
| Entity Information [Line Items] | ||
| Document Type | 8-K | |
| Document Period End Date | Jul. 29, 2019 | |
| Entity Registrant Name | ALTRIA GROUP, INC. | |
| Entity Incorporation, State or Country Code | VA | |
| Entity File Number | 1-08940 | |
| Entity Tax Identification Number | 13-3260245 | |
| Entity Address, Address Line One | 6601 West Broad Street, | |
| Entity Address, City or Town | Richmond, | |
| Entity Address, State or Province | VA | |
| Entity Address, Postal Zip Code | 23230 | |
| City Area Code | 804 | |
| Local Phone Number | 274-2200 | |
| Written Communications | false | |
| Soliciting Material | false | |
| Pre-commencement Tender Offer | false | |
| Pre-commencement Issuer Tender Offer | false | |
| Entity Emerging Growth Company | false | |
| Amendment Flag | false | |
| Entity Central Index Key | 0000764180 | |
| Common Stock, $0.33 1/3 par value | ||
| Entity Information [Line Items] | ||
| Title of 12(b) Security | Common Stock, $0.33 1/3 par value | |
| Trading Symbol | MO | |
| Security Exchange Name | NYSE | |
| 1.000% Notes due 2023 | ||
| Entity Information [Line Items] | ||
| Title of 12(b) Security | 1.000% Notes due 2023 | |
| Trading Symbol | MO23A | |
| Security Exchange Name | NYSE | |
| 1.700% Notes due 2025 | ||
| Entity Information [Line Items] | ||
| Title of 12(b) Security | 1.700% Notes due 2025 | |
| Trading Symbol | MO25 | |
| Security Exchange Name | NYSE | |
| 2.200% Notes due 2027 | ||
| Entity Information [Line Items] | ||
| Title of 12(b) Security | 2.200% Notes due 2027 | |
| Trading Symbol | MO27 | |
| Security Exchange Name | NYSE | |
| 3.125% Notes due 2031 | ||
| Entity Information [Line Items] | ||
| Title of 12(b) Security | 3.125% Notes due 2031 | |
| Trading Symbol | MO31 | |
| Security Exchange Name | NYSE |
