Segment Reporting: (Narrative) (Details) € in Millions, $ in Millions				3 Months Ended					12 Months Ended
		Dec. 09, 2024 USD ($)	Dec. 09, 2024 EUR (€)	Jun. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2025 USD ($) segment	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment									4
Net revenues	[1],[2]								$ 40,648	$ 37,878	$ 35,174
Restructuring charges									241	180	109
Impairment of goodwill				$ 41		$ 0			41	0	665
Impairment of goodwill and other intangibles									41	27	680
Sales tax assessment charges					$ 45
Long-lived assets									11,230	9,637	9,685
Philip Morris (Germany) GmbH Vs Fiscal Court In Düsseldorf (“FC Düsseldorf”)
Segment Reporting Information [Line Items]
Tax assessment, including increase, amount		$ 176	€ 151						176
Vectura Group Ltd. | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Segment Reporting Information [Line Items]
Pre tax loss on sale										199
Japan | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Net revenues									4,200	4,100	3,900
Switzerland
Segment Reporting Information [Line Items]
Long-lived assets									1,700	1,400	1,600
Indonesia
Segment Reporting Information [Line Items]
Long-lived assets									1,000	1,000	1,100
Italy
Segment Reporting Information [Line Items]
Long-lived assets									1,100	1,000	1,000
United States
Segment Reporting Information [Line Items]
Long-lived assets									1,600
Marketing, administration and research costs
Segment Reporting Information [Line Items]
Pre tax charge on termination							$ 140
SSEA, CIS & MEA
Segment Reporting Information [Line Items]
Net revenues									12,051	11,261	10,629
Impairment of goodwill									0		0
SSEA, CIS & MEA | Net Revenues
Segment Reporting Information [Line Items]
Pre tax charge on termination								$ 80
SSEA, CIS & MEA | Marketing, administration and research costs
Segment Reporting Information [Line Items]
Pre tax charge on termination											41
EA, AU & PMI GTR
Segment Reporting Information [Line Items]
Net revenues									6,632	$ 6,393	6,201
Impairment of goodwill									$ 0		$ 0
EA, AU & PMI GTR | Customer Concentration Risk | Customer One | Net Revenues
Segment Reporting Information [Line Items]
Concentration risk percentage									10.00%	11.00%	11.00%
EA, AU & PMI GTR | Korea
Segment Reporting Information [Line Items]
Non-cash pre-tax charge											$ 204
EA, AU & PMI GTR | Marketing, administration and research costs
Segment Reporting Information [Line Items]
Pre tax charge on termination											24
Europe
Segment Reporting Information [Line Items]
Net revenues									$ 17,111	$ 15,690	14,537
Impairment of goodwill									$ 41		665
Pre-tax charge related to conflict in Ukraine											$ 53
Europe | Customer Concentration Risk | Customer One | Net Revenues
Segment Reporting Information [Line Items]
Concentration risk percentage									12.00%	11.00%	12.00%
Europe | Marketing, administration and research costs
Segment Reporting Information [Line Items]
Pre tax charge on termination											$ 60
Americas
Segment Reporting Information [Line Items]
Net revenues									$ 4,854	$ 4,534	3,807
Impairment of goodwill									$ 0		0
Americas | Marketing, administration and research costs
Segment Reporting Information [Line Items]
Pre tax charge on termination											$ 15

[1] Includes net revenues from related parties of $4,582 million, $3,876 million and $3,553 million for the years ended December 31, 2025, 2024 and 2023, respectively

[2] Net revenues are shown net of excise tax on products. For the years ended December 31, 2025, 2024 and 2023, excise tax on products was $53,211 million, $51,563 million and $49,404 million, respectively