Segment Reporting (Schedule of Pre-tax Tobacco and Health Litigation Charges) (Details) - Tobacco and Health Litigation Cases [Member] - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items] | ||
| Provision related to litigation recorded | $ 2 | $ 40 |
| Interest And Other Debt Expense, Net [Member] | Interest and other debt expense, net [Member] | ||
| Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items] | ||
| Provision related to litigation recorded | 0 | 4 |
| PM USA [Member] | Operating Income (Loss) [Member] | Operating Segments [Member] | Smokeable Products [Member] | ||
| Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items] | ||
| Provision related to litigation recorded | $ 2 | $ 36 |