v3.24.0.1
Derivatives - Schedule of Notional Amount and Fair Value of Derivative Instruments (Details) - USD ($)
Dec. 31, 2023
Dec. 31, 2022
Derivatives, Fair Value [Line Items]    
Assets, gross $ 5,298,000,000 $ 3,309,000,000
Assets 1,198,000,000 (2,963,000,000)
Liabilities, gross 1,995,000,000 1,646,000,000
Liabilities $ 10,990,000,000 $ 7,410,000,000
Derivative liability, statement of financial position Other liabilities Other liabilities
Derivatives designated as hedges    
Derivatives, Fair Value [Line Items]    
Assets, gross $ 781,000,000 $ 1,164,000,000
Liabilities, gross 954,000,000 1,159,000,000
Derivatives designated as hedges | Foreign currency swaps    
Derivatives, Fair Value [Line Items]    
Notional Amount 9,034,000,000 6,677,000,000
Assets, gross 477,000,000 747,000,000
Liabilities, gross 230,000,000 154,000,000
Derivatives designated as hedges | Foreign currency forwards    
Derivatives, Fair Value [Line Items]    
Notional Amount 6,294,000,000 6,283,000,000
Assets, gross 275,000,000 406,000,000
Liabilities, gross 102,000,000 52,000,000
Derivatives designated as hedges | Interest rate swaps    
Derivatives, Fair Value [Line Items]    
Notional Amount 4,468,000,000 4,468,000,000
Assets, gross 0 0
Liabilities, gross 521,000,000 803,000,000
Derivatives designated as hedges | Forwards on net investments    
Derivatives, Fair Value [Line Items]    
Notional Amount 219,000,000 216,000,000
Assets, gross 0 2,000,000
Liabilities, gross 6,000,000 0
Derivatives designated as hedges | Interest rate swaps    
Derivatives, Fair Value [Line Items]    
Notional Amount 10,031,000,000 9,332,000,000
Assets, gross 29,000,000 9,000,000
Liabilities, gross 95,000,000 150,000,000
Derivatives not designated as hedges    
Derivatives, Fair Value [Line Items]    
Assets, subtotal 417,000,000 (4,127,000,000)
Liabilities 10,036,000,000 6,251,000,000
Derivatives not designated as hedges | Foreign currency swaps    
Derivatives, Fair Value [Line Items]    
Notional Amount 8,072,000,000 3,563,000,000
Assets, gross 230,000,000 251,000,000
Liabilities, gross 244,000,000 112,000,000
Derivatives not designated as hedges | Foreign currency forwards    
Derivatives, Fair Value [Line Items]    
Notional Amount 28,236,000,000 16,376,000,000
Assets, gross 286,000,000 413,000,000
Liabilities, gross 685,000,000 257,000,000
Derivatives not designated as hedges | Interest rate swaps    
Derivatives, Fair Value [Line Items]    
Notional Amount 3,499,000,000 488,000,000
Assets, gross 81,000,000 74,000,000
Liabilities, gross 9,000,000 0
Derivatives not designated as hedges | Equity options    
Derivatives, Fair Value [Line Items]    
Notional Amount 73,881,000,000 65,089,000,000
Assets, gross 3,809,000,000 1,374,000,000
Liabilities, gross 102,000,000 114,000,000
Derivatives not designated as hedges | Futures    
Derivatives, Fair Value [Line Items]    
Notional Amount 35,000,000 18,000,000
Assets, gross 72,000,000 33,000,000
Liabilities, gross 0 0
Derivatives not designated as hedges | Other swaps    
Derivatives, Fair Value [Line Items]    
Notional Amount 2,588,000,000 89,000,000
Assets, gross 39,000,000 0
Liabilities, gross 1,000,000 4,000,000
Derivatives not designated as hedges | Funds withheld, including related parties    
Derivatives, Fair Value [Line Items]    
Assets, netting (4,100,000,000) (6,272,000,000)
Liabilities, netting (64,000,000) (77,000,000)
Derivatives not designated as hedges | Interest sensitive contract liabilities    
Derivatives, Fair Value [Line Items]    
Assets, netting 0 0
Liabilities, netting $ 9,059,000,000 $ 5,841,000,000