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Equity - Stock Repurchases (Details)
3 Months Ended 12 Months Ended
Mar. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2022
USD ($)
transaction
shares
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
shares
Jun. 22, 2022
shares
Jan. 29, 2020
shares
Dec. 04, 2013
shares
Equity, Class of Treasury Stock [Line Items]                
Remaining shares available under repurchase program (shares)     27,200,000          
ARS agreement transactions | transaction     2          
Total cash utilized | $     $ 12,004,000,000 $ 0 $ 1,164,000,000      
2022 Repurchase Program                
Equity, Class of Treasury Stock [Line Items]                
Shares authorized to be repurchased (shares)           30,000,000    
Shares authorized to be repurchased as percentage of outstanding common stock           9.00%    
2020 Repurchase Program                
Equity, Class of Treasury Stock [Line Items]                
Shares authorized to be repurchased (shares)             30,000,000  
Shares authorized to be repurchased as percentage of outstanding common stock             12.00%  
2013 Repurchase Program                
Equity, Class of Treasury Stock [Line Items]                
Shares authorized to be repurchased (shares)               50,000,000
Shares authorized to be repurchased as percentage of outstanding common stock               18.00%
Stock Repurchases                
Equity, Class of Treasury Stock [Line Items]                
Stock repurchased during period (shares)     33,500,000   4,000,000      
Total cash utilized | $   $ 3,000,000 $ 12,000,000,000 $ 0 $ 1,161,000,000      
Stock Repurchases, subsequently settled                
Equity, Class of Treasury Stock [Line Items]                
Total cash utilized | $ $ 1,164,000,000