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Investments in Equity Securities (Investment in ABI Narrative) (Details) - USD ($)
shares in Millions, $ in Millions
3 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2022
Jun. 30, 2022
Dec. 31, 2021
Investments [Line Items]          
Fair value of investment $ 11,200        
ABI [Member]          
Investments [Line Items]          
Equity method investment, ownership percentage (approximately)     10.00%    
Equity method investment, number of shares owned, restricted (in shares)     185    
Equity method investment, number of shares owned, common (in shares)     12    
Equity method investments   $ 11,200 $ 8,975   $ 11,144
Equity method investment, difference between carrying amount and fair value, percentage (22.00%) (35.00%) 33.00%    
Equity method investment, impairment $ 2,500 $ 6,200      
Difference between carrying amount and underlying equity     $ 2,500    
Level 1 [Member] | ABI [Member]          
Investments [Line Items]          
Fair value of investment 9,000 11,200 $ 11,900   11,900
Equity method investments         11,100
Equity method investment, difference between carrying amount and fair value $ (2,500) $ (6,200)   $ (1,100) $ 800
Equity method investment, difference between carrying amount and fair value, percentage       (9.00%) 7.00%