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Earnings Per Share (Narrative) (Details)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 31, 2023
USD ($)
shares
Dec. 31, 2022
shares
Dec. 31, 2024
USD ($)
$ / shares
shares
Feb. 05, 2024
$ / shares
shares
Mar. 04, 2021
$ / shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Corporate Unit, Notional Value | $     $ 1,043    
Preferred stock (without par value, 50,000,000 shares authorized; 1,043,050 issued and outstanding at December 31, 2023) | $ $ 838   $ 0    
Preferred Stock, Convertible, Initial Conversion Rate | $ / shares     $ 31.5428    
Equity Unit, Shares Issued     10,430,500    
Corporate Equity Unit, Stated Value Per Share | $ / shares     $ 100    
Preferred Stock, Beneficial Ownership Interest in One Share     0.10    
Preferred Stock, Convertible, Initial Conversion Price | $ / shares     $ 31.70    
Shares Issued, Price Per Share | $ / shares       $ 25.73 $ 25.88
Forward Contract Indexed to Issuer's Equity, Settlement Rate 3.864     3.8859  
Share-based Payment Arrangement          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Antidilutive securities excluded from computation of earnings per share 2,000,000 5,000,000      
Weighted Average Number Antidilutive Securities Excluded from Computation of EPS   3,000,000      
Equity Unit Purchase Agreements          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Antidilutive securities excluded from computation of earnings per share   40,000,000