Investments in Equity Securities (Investment in Cronos Narrative) (Details) shares in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) shares	Sep. 30, 2022 USD ($)	Sep. 30, 2023 $ / shares	Dec. 31, 2022 USD ($)
Investments [Line Items]
Equity method investment, difference between carrying amount and fair value	$ (2,500,000,000)		$ (2,500,000,000)
Equity method investment, impairment	$ 2,500,000,000		$ 2,500,000,000
Cronos [Member]
Investments [Line Items]
Ownership percentage		41.10%
Number of ordinary shares owned (approximately) (in shares) | shares		156.6
Equity method investment, difference between carrying amount and fair value		$ (31,000,000)			$ 22,000,000
Equity method investment, difference between carrying amount and fair value, percentage (approximately)		(9.00%)			(6.00%)
Equity method investment, impairment		$ 0
Equity Contract, Preemptive Rights [Member] | Cronos [Member]
Investments [Line Items]
Equity method investment, shares purchased, (CAD per share) | $ / shares				$ 16.25
Equity method investments, fixed preemptive rights		$ 0			$ 0