v3.23.1
Deferred Policy Acquisition Costs - Rollforward of LDTI (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Jan. 01, 2021
Summary of Significant Accounting Policies [Line Items]        
Balance, beginning of year   $ 7,241    
Impact of CECL adoption     $ 15  
Change related to unrealized (appreciation) depreciation of investments     (1,085)  
Other, including foreign exchange     15  
Balance, end of year     7,241  
Deferred policy acquisition costs and value of business acquired $ 10,563 10,598   $ 10,500
As Previously Reported        
Summary of Significant Accounting Policies [Line Items]        
Deferred policy acquisition costs and value of business acquired 13,179 8,058   $ 7,363
Long-Duration Insurance Contracts        
Summary of Significant Accounting Policies [Line Items]        
Balance, beginning of year 10,485 10,375 7,939  
Capitalizations (1,059) (1,056) (889)  
Amortization expense 1,011 941 (532)  
Other, including foreign exchange (61) (5)    
Balance, end of year 10,472 10,485 10,375  
Deferred policy acquisition costs and value of business acquired 10,563 10,598    
Long-Duration Insurance Contracts | As Previously Reported        
Summary of Significant Accounting Policies [Line Items]        
Balance, beginning of year   7,241    
Balance, end of year     7,241  
Value Of Business Acquired        
Summary of Significant Accounting Policies [Line Items]        
Balance, beginning of year 113 125    
Capitalizations (9) (10)    
Other, including foreign exchange 13 2    
Balance, end of year 91 113 125  
Value of Business Acquired 91 113    
Value Of Business Acquired | As Previously Reported        
Summary of Significant Accounting Policies [Line Items]        
Balance, beginning of year   122 130  
Capitalizations     (11)  
Change related to unrealized (appreciation) depreciation of investments     (2)  
Other, including foreign exchange     1  
Balance, end of year     122  
Individual Retirement | Long-Duration Insurance Contracts        
Summary of Significant Accounting Policies [Line Items]        
Balance, beginning of year 4,604 4,476    
Capitalizations (562) (579)    
Amortization expense 523 451    
Other, including foreign exchange 0 0    
Balance, end of year 4,643 4,604 4,476  
Deferred policy acquisition costs and value of business acquired 4,646 4,607    
Individual Retirement | Long-Duration Insurance Contracts | As Previously Reported        
Summary of Significant Accounting Policies [Line Items]        
Balance, beginning of year   2,426    
Balance, end of year     2,426  
Individual Retirement | Value Of Business Acquired        
Summary of Significant Accounting Policies [Line Items]        
Balance, beginning of year 3 3    
Capitalizations 0 0    
Other, including foreign exchange 0 0    
Balance, end of year 3 3 3  
Value of Business Acquired 3 3    
Individual Retirement | Value Of Business Acquired | As Previously Reported        
Summary of Significant Accounting Policies [Line Items]        
Balance, beginning of year   3    
Balance, end of year     3  
Individual Retirement | Value Of Business Acquired | Cumulative Effect, Period of Adoption, Adjusted Balance        
Summary of Significant Accounting Policies [Line Items]        
Balance, beginning of year   3    
Balance, end of year     3  
Group Retirement | Long-Duration Insurance Contracts        
Summary of Significant Accounting Policies [Line Items]        
Balance, beginning of year 1,078 1,093    
Capitalizations (62) (63)    
Amortization expense 80 78    
Other, including foreign exchange 0 0    
Balance, end of year 1,060 1,078 1,093  
Deferred policy acquisition costs and value of business acquired 1,061 1,079    
Group Retirement | Long-Duration Insurance Contracts | As Previously Reported        
Summary of Significant Accounting Policies [Line Items]        
Balance, beginning of year   560    
Balance, end of year     560  
Group Retirement | Value Of Business Acquired        
Summary of Significant Accounting Policies [Line Items]        
Balance, beginning of year 1 1    
Capitalizations 0 0    
Other, including foreign exchange 0 0    
Balance, end of year 1 1 1  
Value of Business Acquired 1 1    
Group Retirement | Value Of Business Acquired | As Previously Reported        
Summary of Significant Accounting Policies [Line Items]        
Balance, beginning of year   1    
Balance, end of year     1  
Group Retirement | Value Of Business Acquired | Cumulative Effect, Period of Adoption, Adjusted Balance        
Summary of Significant Accounting Policies [Line Items]        
Balance, beginning of year   1    
Balance, end of year     1  
Life Insurance | Long-Duration Insurance Contracts        
Summary of Significant Accounting Policies [Line Items]        
Balance, beginning of year 4,765 4,773    
Capitalizations (414) (404)    
Amortization expense 401 406    
Other, including foreign exchange (60) (6)    
Balance, end of year 4,718 4,765 4,773  
Deferred policy acquisition costs and value of business acquired 4,805 4,874    
Life Insurance | Long-Duration Insurance Contracts | As Previously Reported        
Summary of Significant Accounting Policies [Line Items]        
Balance, beginning of year   4,229    
Balance, end of year     4,229  
Life Insurance | Value Of Business Acquired        
Summary of Significant Accounting Policies [Line Items]        
Balance, beginning of year 109 121    
Capitalizations (9) (10)    
Other, including foreign exchange 13 2    
Balance, end of year 87 109 121  
Value of Business Acquired 87 109    
Life Insurance | Value Of Business Acquired | As Previously Reported        
Summary of Significant Accounting Policies [Line Items]        
Balance, beginning of year   118    
Balance, end of year     118  
Life Insurance | Value Of Business Acquired | Cumulative Effect, Period of Adoption, Adjusted Balance        
Summary of Significant Accounting Policies [Line Items]        
Balance, beginning of year   121    
Balance, end of year     121  
Institutional Markets | Long-Duration Insurance Contracts        
Summary of Significant Accounting Policies [Line Items]        
Balance, beginning of year 38 33    
Capitalizations (21) (10)    
Amortization expense 7 6    
Other, including foreign exchange (1) 1    
Balance, end of year 51 38 33  
Deferred policy acquisition costs and value of business acquired 51 38    
Institutional Markets | Long-Duration Insurance Contracts | As Previously Reported        
Summary of Significant Accounting Policies [Line Items]        
Balance, beginning of year   26    
Balance, end of year     26  
Institutional Markets | Value Of Business Acquired        
Summary of Significant Accounting Policies [Line Items]        
Balance, beginning of year   125    
Balance, end of year     125  
Value of Business Acquired $ 0 0    
Institutional Markets | Value Of Business Acquired | As Previously Reported        
Summary of Significant Accounting Policies [Line Items]        
Balance, beginning of year   $ 122    
Balance, end of year     $ 122