Contingencies (Non-Engle Progeny Litigation) (Details) - USD ($)	12 Months Ended
	Jun. 30, 2026	Mar. 31, 2026	Dec. 31, 2025	Nov. 30, 2025	Oct. 31, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Aug. 31, 2023	Sep. 30, 2022
Loss Contingencies [Line Items]
Loss contingency accrual	$ 156,000,000	$ 63,000,000	$ 71,000,000			$ 95,000,000	$ 118,000,000	$ 96,000,000
Non-Engle Progeny Smoking And Health Case, Petruzziello [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded				$ 1,000,000
Non-Engle Progeny Smoking And Health Case, Petruzziello [Member] \| Philip Morris USA
Loss Contingencies [Line Items]
Punitive damages awarded				$ 0
Non-Engle Progeny Smoking And Health Case, Perez-Trinidad [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded					$ 1,000,000
Non-Engle Progeny Smoking And Health Case, Perez-Trinidad [Member] \| Philip Morris USA
Loss Contingencies [Line Items]
Punitive damages awarded					$ 5,500,000
Non-Engle Progeny Smoking And Health Case, Amaral [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded							4,000,000
Non-Engle Progeny Smoking And Health Case, Amaral [Member] \| Philip Morris USA
Loss Contingencies [Line Items]
Punitive damages awarded							$ 25,000,000
Non-Engle Progeny Smoking And Health Case, Ricapor-Hall [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded									$ 6,000,000
Non-Engle Progeny Smoking And Health Case, Ricapor-Hall [Member] \| Philip Morris USA
Loss Contingencies [Line Items]
Compensatory damages awarded									3,000,000
Punitive damages awarded									$ 8,000,000
Non-Engle Progeny Smoking And Health Case, Fontaine [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded										$ 8,000,000
Non-Engle Progeny Smoking And Health Case, Fontaine [Member] \| Philip Morris USA
Loss Contingencies [Line Items]
Punitive damages awarded										56,000,000
Loss contingency accrual										$ 89,000,000
Non-Engle Progeny Smoking And Health Case, Woodley [Member] \| Philip Morris USA
Loss Contingencies [Line Items]
Payment Amount for Damages (if any)	5,000,000
Non-Engle Progeny Smoking And Health Case, Taylor [Member]
Loss Contingencies [Line Items]
Payment Amount for Damages (if any)	$ 1,000,000