v3.24.0.1
Debt - Narrative (Details)
12 Months Ended
Dec. 12, 2023
USD ($)
Nov. 01, 2023
Aug. 23, 2023
USD ($)
Jun. 30, 2023
USD ($)
extension
Dec. 31, 2023
USD ($)
Nov. 13, 2023
USD ($)
Dec. 31, 2022
USD ($)
Oct. 12, 2022
USD ($)
Asset Management | 2053 Subordinated Notes                
Debt Instrument [Line Items]                
Aggregate principal amount     $ 600,000,000          
Interest rate, stated percentage     7.625%          
Debt maturities term     5 years          
Asset Management | 2053 Subordinated Notes | US Treasury (UST) Interest Rate                
Debt Instrument [Line Items]                
Basis spread on variable rate     3.226%          
Senior Notes | Asset Management | 6.38% 2033 Senior Notes                
Debt Instrument [Line Items]                
Aggregate principal amount           $ 500,000,000    
Interest rate, stated percentage           6.375%    
Debt instrument, redemption price, percentage   99.271%            
Interest rate         6.38%   6.38%  
Senior Notes | Retirement Services                
Debt Instrument [Line Items]                
Debt instrument, redemption price, percentage         100.00%      
Senior Notes | Retirement Services | AHL Credit Facility                
Debt Instrument [Line Items]                
Aggregate principal amount $ 600,000,000              
Debt instrument, redemption price, percentage 98.174%              
Line of Credit | Revolving Credit Facility | AMH Credit Facility                
Debt Instrument [Line Items]                
Maximum borrowing capacity               $ 1,000,000,000
Line of Credit | Asset Management | Revolving Credit Facility | AMH Credit Facility                
Debt Instrument [Line Items]                
Maximum borrowing capacity         $ 1,000,000,000      
Incremental facilities, maximum amount         $ 250,000,000      
Maximum leverage ratio         4.00      
Amount outstanding         $ 0      
Line of Credit | Retirement Services | Revolving Credit Facility | AHL Credit Facility                
Debt Instrument [Line Items]                
Debt maturities term       5 years        
Maximum borrowing capacity       $ 1,250,000,000 1,250,000,000      
Number of extensions | extension       2        
Renewal term of credit facility       1 year        
Line of credit facility, maximum borrowing capacity including potential increases       $ 1,750,000,000 1,750,000,000      
Capitalization ratio       35.00%        
Minimum consolidated net worth       $ 14,800,000,000        
Line of Credit | Retirement Services | Revolving Credit Facility | AHL Liquidity Facility                
Debt Instrument [Line Items]                
Maximum borrowing capacity         2,600,000,000      
Amount outstanding         $ 0   $ 0  
Renewal term of credit facility         364 days      
Line of credit facility, maximum borrowing capacity including potential increases         $ 3,100,000,000      
Minimum consolidated net worth         $ 8,800,000,000