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Schedule II - Condensed Financial Information of Registrant (Parent Company Only) - Condensed Statements of Stockholders' Equity (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Total comprehensive income (loss), net of income tax $ 212 $ (38) $ (400)  
Stock-based compensation (17) (14) (11)  
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture (4) (6) (3)  
Ending balance 1,305 1,098 1,140  
Stockholders' Equity Attributable to Parent 1,252 1,038    
Noncontrolling Interest, Change in Redemption Value 3 (12)    
Treasury Stock, Value, Acquired, Cost Method (14)      
AMPS Impact on Stockholders Equity (8)      
Accounting Standards Update 2016-13 [Member]        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Effect of New Accounting Principle     (4)  
Retained Earnings [Member]        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Total comprehensive income (loss), net of income tax 521 (17) (437)  
Stock-based compensation 0 0 0  
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture (5) (4) (2)  
Ending balance 1,245 726 759  
Noncontrolling Interest, Change in Redemption Value 3 (12)    
AMPS Impact on Stockholders Equity 1      
Retained Earnings [Member] | Accounting Standards Update 2016-13 [Member]        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Effect of New Accounting Principle     (4)  
AOCI Attributable to Parent [Member]        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Total comprehensive income (loss), net of income tax (310) (21) 37  
Stock-based compensation 0 0 0  
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture 0 0 0  
Ending balance (253) 58 79  
Preferred Stock [Member]        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Stock-based compensation 0 0 0  
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture 0 0 0  
Ending balance 0 0 0  
Common Stock [Member]        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Stock-based compensation 0 0 0  
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture 0 0 0  
Ending balance 0 0 0  
Additional Paid-in Capital [Member]        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Stock-based compensation (17) (14) (11)  
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture 0 0 0  
Ending balance 274 257 242  
Common Stock Held in Treasury, at Cost [Member]        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Stock-based compensation 0 0 0  
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture 2 (2) (1)  
Ending balance (15) (3) (1)  
Treasury Stock, Value, Acquired, Cost Method (14)      
Noncontrolling Interest [Member]        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Stock-based compensation 0 0 0  
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture 0 0 0  
Ending balance 53 60 60  
AMPS Impact on Stockholders Equity (9)      
Parent Company [Member]        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Total comprehensive income (loss), net of income tax 211 (38) (400)  
Stock-based compensation (17) (14) (11)  
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture (4) (6) (3)  
Stockholders' Equity Attributable to Parent 1,252 1,038 1,080 $ 1,477
Noncontrolling Interest, Change in Redemption Value 3 (12)    
AMPS Impact on Stockholders Equity 1      
Parent Company [Member] | Accounting Standards Update 2016-13 [Member]        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Effect of New Accounting Principle     (4)  
Parent Company [Member] | Retained Earnings [Member]        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Total comprehensive income (loss), net of income tax 521 (17) (437)  
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture (5) (4) (2)  
Stockholders' Equity Attributable to Parent 1,245 726 759 1,203
Noncontrolling Interest, Change in Redemption Value 3 (12)    
AMPS Impact on Stockholders Equity 1      
Parent Company [Member] | Retained Earnings [Member] | Accounting Standards Update 2016-13 [Member]        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Effect of New Accounting Principle     (4)  
Parent Company [Member] | AOCI Attributable to Parent [Member]        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Total comprehensive income (loss), net of income tax (310) (21) 37  
Stockholders' Equity Attributable to Parent (253) 58 79 42
Parent Company [Member] | Preferred Stock [Member]        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Stockholders' Equity Attributable to Parent 0 0 0 0
Parent Company [Member] | Common Stock [Member]        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Stockholders' Equity Attributable to Parent 0 0 0 0
Parent Company [Member] | Additional Paid-in Capital [Member]        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Stock-based compensation (17) (14) (11)  
Stockholders' Equity Attributable to Parent 274 257 242 232
Parent Company [Member] | Common Stock Held in Treasury, at Cost [Member]        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Stock-based compensation   0    
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture 2 (2) (1)  
Stockholders' Equity Attributable to Parent $ (15) $ (3) $ (1) $ 0