Income Taxes (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Taxes [Line Items]
Unrecognized tax benefits if recognized would impact effective tax rate	$ 35	$ 44
Unrecognized tax benefits if recognized would affect deferred taxes	1,573	25
Provision for income tax	(2,798)	(1,625)	$ (1,349)
Deferred federal income tax expense (benefit)	133	893	1,190
Additions based on tax positions related to the current year	1,548	1	0
Indirect deferred income tax expense (benefit)	428
Increase (decrease) in other noncurrent liabilities	1,120
Penalties and interest accrued	36	18	11
Interest (income) expense associated with uncertain tax position	20	8	(4)
Potential decrease in liability for uncertain tax positions	15
Valuation allowance, deferred tax asset, capital losses, amount	463	664
Valuation allowance release	663	0	0
Deferred tax assets, valuation allowance	2,256	2,800	3,097	$ 2,817
Deferred Tax Assets, Domestic Subsidiary Shares [Member]
Income Taxes [Line Items]
Deferred tax assets, valuation allowance	1,808
State and Local Jurisdiction [Member]
Income Taxes [Line Items]
Net operating losses carry forward	700
Foreign Tax Authority [Member]
Income Taxes [Line Items]
Net operating losses carry forward	38
Domestic Tax Authority [Member]
Income Taxes [Line Items]
Net operating losses carry forward	644
JUUL [Member]
Income Taxes [Line Items]
Equity securities, FV-NI, ordinary loss, tax basis of investments	6,400
Provision for income tax	1,505
Deferred federal income tax expense (benefit)	(43)
Additions based on tax positions related to the current year	1,548
Valuation allowance release	53	306
Deferred tax assets, valuation allowance		2,394	2,652
Cronos Group Inc. [Member]
Income Taxes [Line Items]
Valuation allowance release			128
Deferred tax assets, valuation allowance	$ 397	$ 379	$ 407