v3.24.0.1
Debt - Schedule of Credit and Liquidity Facilities (Details) - Line of Credit - Revolving Credit Facility - USD ($)
12 Months Ended
Dec. 31, 2023
Jun. 30, 2023
Oct. 12, 2022
AMH Credit Facility      
Debt Instrument [Line Items]      
Maximum borrowing capacity     $ 1,000,000,000
AMH Credit Facility | Asset Management      
Debt Instrument [Line Items]      
Commitment fee (as a percent) 0.08%    
Maximum borrowing capacity $ 1,000,000,000    
AHL Credit Facility | Retirement Services      
Debt Instrument [Line Items]      
Maximum borrowing capacity 1,250,000,000 $ 1,250,000,000  
Line of credit facility, maximum borrowing capacity including potential increases 1,750,000,000 $ 1,750,000,000  
AHL Liquidity Facility | Retirement Services      
Debt Instrument [Line Items]      
Maximum borrowing capacity 2,600,000,000    
Line of credit facility, maximum borrowing capacity including potential increases $ 3,100,000,000