v3.26.1
Fair Value of Financial Instruments - Schedule of Quantitative Information Regarding Significant Unobservable Inputs Used for Recurring Level 3 Fair Value Measurements of Financial Instruments (Details)
$ in Millions
Mar. 31, 2026
USD ($)
Dec. 31, 2025
USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Assets, fair value $ 2,202 $ 1,933
Liabilities, fair value 7,409 7,517
Third-Party Valuation | Offered Quotes    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Assets, fair value 13,016 12,597
Liabilities, fair value 2 9
Indexed annuities/ IUL embedded derivatives, included in Contractholder funds | Discounted Cash Flow    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Liabilities, fair value $ 6,380 $ 6,542
Minimum | Indexed annuities/ IUL embedded derivatives, included in Contractholder funds | Discounted Cash Flow | Market Value of Option    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative liability 0.0000 0.0000
Minimum | Indexed annuities/ IUL embedded derivatives, included in Contractholder funds | Discounted Cash Flow | Mortality Multiplier    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative liability 0.8000 0.8000
Minimum | Indexed annuities/ IUL embedded derivatives, included in Contractholder funds | Discounted Cash Flow | Surrender Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative liability 0.0025 0.0025
Minimum | Indexed annuities/ IUL embedded derivatives, included in Contractholder funds | Discounted Cash Flow | Partial Withdrawal Rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative liability 0.0200 0.0200
Minimum | Indexed annuities/ IUL embedded derivatives, included in Contractholder funds | Discounted Cash Flow | Non-Performance Spread    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative liability 0.0054 0.0043
Minimum | Indexed annuities/ IUL embedded derivatives, included in Contractholder funds | Discounted Cash Flow | Option Cost    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative liability 0.0050 0.0050
Maximum | Indexed annuities/ IUL embedded derivatives, included in Contractholder funds | Discounted Cash Flow | Market Value of Option    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative liability 0.2832 0.4013
Maximum | Indexed annuities/ IUL embedded derivatives, included in Contractholder funds | Discounted Cash Flow | Mortality Multiplier    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative liability 1.1500 1.1500
Maximum | Indexed annuities/ IUL embedded derivatives, included in Contractholder funds | Discounted Cash Flow | Surrender Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative liability 0.5000 0.5000
Maximum | Indexed annuities/ IUL embedded derivatives, included in Contractholder funds | Discounted Cash Flow | Partial Withdrawal Rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative liability 0.3571 0.3571
Maximum | Indexed annuities/ IUL embedded derivatives, included in Contractholder funds | Discounted Cash Flow | Non-Performance Spread    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative liability 0.0101 0.0085
Maximum | Indexed annuities/ IUL embedded derivatives, included in Contractholder funds | Discounted Cash Flow | Option Cost    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative liability 0.0609 0.0609
Weighted Average | Indexed annuities/ IUL embedded derivatives, included in Contractholder funds | Discounted Cash Flow | Market Value of Option    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative liability 0.0284 0.0384
Weighted Average | Indexed annuities/ IUL embedded derivatives, included in Contractholder funds | Discounted Cash Flow | Mortality Multiplier    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative liability 1.0000 1.0000
Weighted Average | Indexed annuities/ IUL embedded derivatives, included in Contractholder funds | Discounted Cash Flow | Surrender Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative liability 0.0647 0.0668
Weighted Average | Indexed annuities/ IUL embedded derivatives, included in Contractholder funds | Discounted Cash Flow | Partial Withdrawal Rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative liability 0.0269 0.0269
Weighted Average | Indexed annuities/ IUL embedded derivatives, included in Contractholder funds | Discounted Cash Flow | Non-Performance Spread    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative liability 0.0081 0.0064
Weighted Average | Indexed annuities/ IUL embedded derivatives, included in Contractholder funds | Discounted Cash Flow | Option Cost    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative liability 0.0281 0.0278
Asset-backed securities | Third-Party Valuation    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Assets, fair value $ 99 $ 92
Asset-backed securities | Minimum | Third-Party Valuation | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt securities 0.0383 0.0436
Asset-backed securities | Maximum | Third-Party Valuation | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt securities 0.1317 0.0715
Asset-backed securities | Weighted Average | Third-Party Valuation | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt securities 0.0668 0.0580
Corporates | Third-Party Valuation    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Assets, fair value $ 676 $ 661
Corporates | Discounted Cash Flow    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Assets, fair value $ 9 $ 8
Corporates | Minimum | Third-Party Valuation | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt securities 0.0367 0.0345
Corporates | Minimum | Discounted Cash Flow | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt securities 0.7500 0.0550
Corporates | Maximum | Third-Party Valuation | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt securities 0.0907 0.0868
Corporates | Maximum | Discounted Cash Flow | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt securities 1.0000 1.0000
Corporates | Weighted Average | Third-Party Valuation | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt securities 0.0632 0.0584
Corporates | Weighted Average | Discounted Cash Flow | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt securities 0.9868 0.9873
Municipals | Third-Party Valuation    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Assets, fair value $ 3 $ 3
Municipals | Minimum | Third-Party Valuation | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt securities 0.0520 0.0494
Municipals | Maximum | Third-Party Valuation | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt securities 0.0520 0.0494
Municipals | Weighted Average | Third-Party Valuation | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt securities 0.0520 0.0494
Residential mortgage-backed securities | Third-Party Valuation    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Assets, fair value $ 3 $ 3
Residential mortgage-backed securities | Minimum | Third-Party Valuation | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt securities 0.0569 0.0541
Residential mortgage-backed securities | Maximum | Third-Party Valuation | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt securities 0.0569 0.0541
Residential mortgage-backed securities | Weighted Average | Third-Party Valuation | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt securities 0.0569 0.0541
Foreign Governments | Third-Party Valuation    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Assets, fair value $ 5 $ 5
Foreign Governments | Minimum | Third-Party Valuation | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt securities 0.0816 0.0573
Foreign Governments | Maximum | Third-Party Valuation | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt securities 0.0816 0.0573
Foreign Governments | Weighted Average | Third-Party Valuation | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt securities 0.0816 0.0573
Preferred equity securities | Discounted Cash Flow    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Assets, fair value   $ 1
Preferred equity securities | Affiliated Entity | Discounted Cash Flow    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Assets, fair value $ 1  
Preferred equity securities | Affiliated Entity | Minimum | Discounted Cash Flow | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Preferred/Equity securities 1.0000 1.0000
Preferred equity securities | Affiliated Entity | Maximum | Discounted Cash Flow | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Preferred/Equity securities 1.0000 1.0000
Preferred equity securities | Affiliated Entity | Weighted Average | Discounted Cash Flow | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Preferred/Equity securities 1.0000 1.0000
Common equity securities | Discounted Cash Flow    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Assets, fair value   $ 12
Common equity securities | Affiliated Entity | Discounted Cash Flow    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Assets, fair value $ 5  
Common equity securities | Affiliated Entity | Minimum | Discounted Cash Flow | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Preferred/Equity securities 0.0820 0.0810
Common equity securities | Affiliated Entity | Maximum | Discounted Cash Flow | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Preferred/Equity securities 0.0820 0.1400
Common equity securities | Affiliated Entity | Weighted Average | Discounted Cash Flow | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Preferred/Equity securities 0.0820 0.1429
Investments in unconsolidated affiliates | Market Comparable Company Analysis    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Assets, fair value $ 260 $ 270
Investments in unconsolidated affiliates | Minimum | Market Comparable Company Analysis | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investment in unconsolidated affiliate 6.5 7.4
Investments in unconsolidated affiliates | Maximum | Market Comparable Company Analysis | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investment in unconsolidated affiliate 14.9 15.5
Investments in unconsolidated affiliates | Weighted Average | Market Comparable Company Analysis | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investment in unconsolidated affiliate 10.89 12.1
Available-for-sale embedded derivative | Black Scholes model    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Assets, fair value $ 39 $ 41
Available-for-sale embedded derivative | Black Scholes model | Market Value of AnchorPath Fund    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative asset 1.0000 1.0000
Indexed annuities/IUL ceded embedded derivatives | Discounted Cash Flow    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Assets, fair value $ 630 $ 399
Indexed annuities/IUL ceded embedded derivatives | Minimum | Discounted Cash Flow | Market Value of Option    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative asset 0.0000 0.0000
Indexed annuities/IUL ceded embedded derivatives | Minimum | Discounted Cash Flow | Mortality Multiplier    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative asset 0.8000 0.8000
Indexed annuities/IUL ceded embedded derivatives | Minimum | Discounted Cash Flow | Surrender Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative asset 0.0025 0.0025
Indexed annuities/IUL ceded embedded derivatives | Minimum | Discounted Cash Flow | Partial Withdrawal Rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative asset 0.0200 0.0200
Indexed annuities/IUL ceded embedded derivatives | Minimum | Discounted Cash Flow | Non-Performance Spread    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative asset 0.0096 0.0053
Indexed annuities/IUL ceded embedded derivatives | Minimum | Discounted Cash Flow | Option Cost    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative asset 0.0056 0.0139
Indexed annuities/IUL ceded embedded derivatives | Maximum | Discounted Cash Flow | Market Value of Option    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative asset 0.5664 0.3177
Indexed annuities/IUL ceded embedded derivatives | Maximum | Discounted Cash Flow | Mortality Multiplier    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative asset 1.1500 1.1500
Indexed annuities/IUL ceded embedded derivatives | Maximum | Discounted Cash Flow | Surrender Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative asset 0.5000 0.5000
Indexed annuities/IUL ceded embedded derivatives | Maximum | Discounted Cash Flow | Partial Withdrawal Rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative asset 0.2564 0.0650
Indexed annuities/IUL ceded embedded derivatives | Maximum | Discounted Cash Flow | Non-Performance Spread    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative asset 0.0249 0.0115
Indexed annuities/IUL ceded embedded derivatives | Maximum | Discounted Cash Flow | Option Cost    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative asset 0.0520 0.0530
Indexed annuities/IUL ceded embedded derivatives | Weighted Average | Discounted Cash Flow | Market Value of Option    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative asset 0.0180 0.0274
Indexed annuities/IUL ceded embedded derivatives | Weighted Average | Discounted Cash Flow | Mortality Multiplier    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative asset 1.0000 1.0000
Indexed annuities/IUL ceded embedded derivatives | Weighted Average | Discounted Cash Flow | Surrender Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative asset 0.0335 0.0333
Indexed annuities/IUL ceded embedded derivatives | Weighted Average | Discounted Cash Flow | Partial Withdrawal Rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative asset 0.0254 0.0222
Indexed annuities/IUL ceded embedded derivatives | Weighted Average | Discounted Cash Flow | Non-Performance Spread    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative asset 0.0151 0.0090
Indexed annuities/IUL ceded embedded derivatives | Weighted Average | Discounted Cash Flow | Option Cost    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Embedded derivative asset 0.0199 0.0198
Loan receivable | Discounted Cash Flow    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Assets, fair value $ 24 $ 24
Loan receivable | Minimum | Discounted Cash Flow | Risk-Adjusted Discount Rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loan receivable, measurement input 0.0663 0.0635
Loan receivable | Minimum | Discounted Cash Flow | Collateral Volatility    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loan receivable, measurement input 0.3250 0.3500
Loan receivable | Maximum | Discounted Cash Flow | Risk-Adjusted Discount Rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loan receivable, measurement input 0.0663 0.0635
Loan receivable | Maximum | Discounted Cash Flow | Collateral Volatility    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loan receivable, measurement input 0.3250 0.3500
Loan receivable | Weighted Average | Discounted Cash Flow | Risk-Adjusted Discount Rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loan receivable, measurement input 0.0663 0.0635
Loan receivable | Weighted Average | Discounted Cash Flow | Collateral Volatility    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loan receivable, measurement input 0.3250 0.3500
Market risk benefits asset | Discounted Cash Flow    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Assets, fair value $ 308 $ 285
Market risk benefits asset | Minimum | Discounted Cash Flow | Mortality Multiplier    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.8000  
Market risk benefits asset | Minimum | Discounted Cash Flow | Surrender Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.0025 0.0025
Market risk benefits asset | Minimum | Discounted Cash Flow | Partial Withdrawal Rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.0000 0.0000
Market risk benefits asset | Minimum | Discounted Cash Flow | Non-Performance Spread    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.0054 0.0043
Market risk benefits asset | Minimum | Discounted Cash Flow | Mortality Multiplier    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit   0.8000
Market risk benefits asset | Minimum | Discounted Cash Flow | GMWB Utilization    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.5000 0.5000
Market risk benefits asset | Maximum | Discounted Cash Flow | Mortality Multiplier    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 1.1500  
Market risk benefits asset | Maximum | Discounted Cash Flow | Surrender Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.3000 0.3000
Market risk benefits asset | Maximum | Discounted Cash Flow | Partial Withdrawal Rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.2564 0.2564
Market risk benefits asset | Maximum | Discounted Cash Flow | Non-Performance Spread    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.0101 0.0085
Market risk benefits asset | Maximum | Discounted Cash Flow | Mortality Multiplier    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit   1.1500
Market risk benefits asset | Maximum | Discounted Cash Flow | GMWB Utilization    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.7500 0.7500
Market risk benefits asset | Weighted Average | Discounted Cash Flow | Mortality Multiplier    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 1.0000  
Market risk benefits asset | Weighted Average | Discounted Cash Flow | Surrender Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.0523 0.0533
Market risk benefits asset | Weighted Average | Discounted Cash Flow | Partial Withdrawal Rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.0247 0.0247
Market risk benefits asset | Weighted Average | Discounted Cash Flow | Non-Performance Spread    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.0081 0.0064
Market risk benefits asset | Weighted Average | Discounted Cash Flow | Mortality Multiplier    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit   1.0000
Market risk benefits asset | Weighted Average | Discounted Cash Flow | GMWB Utilization    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.6334 0.6303
MSRs | Discounted Cash Flow    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Assets, fair value $ 140 $ 129
MSRs | Minimum | Discounted Cash Flow | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets 0.0771 0.0638
MSRs | Minimum | Discounted Cash Flow | Conditional Prepayment Rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets 0.0581 0.0585
MSRs | Maximum | Discounted Cash Flow | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets 0.1082 0.1069
MSRs | Maximum | Discounted Cash Flow | Conditional Prepayment Rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets 0.1395 0.1365
MSRs | Weighted Average | Discounted Cash Flow | Discount rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets 0.0872 0.0800
MSRs | Weighted Average | Discounted Cash Flow | Conditional Prepayment Rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets 0.0778 0.0777
Contingent consideration, included in Accounts payable and accrued liabilities | Discounted Cash Flow    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Liabilities, fair value $ 61 $ 72
Contingent consideration, included in Accounts payable and accrued liabilities | Minimum | Discounted Cash Flow | Risk-Adjusted Discount Rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Contingent consideration 0.1200 0.1150
Contingent consideration, included in Accounts payable and accrued liabilities | Minimum | Discounted Cash Flow | EBITDA Volatility    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Contingent consideration 0.3500 0.3500
Contingent consideration, included in Accounts payable and accrued liabilities | Minimum | Discounted Cash Flow | Counterparty Discount Rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Contingent consideration   0.0630
Contingent consideration, included in Accounts payable and accrued liabilities | Maximum | Discounted Cash Flow | Risk-Adjusted Discount Rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Contingent consideration 0.1200 0.1150
Contingent consideration, included in Accounts payable and accrued liabilities | Maximum | Discounted Cash Flow | EBITDA Volatility    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Contingent consideration 0.3500 0.3500
Contingent consideration, included in Accounts payable and accrued liabilities | Maximum | Discounted Cash Flow | Counterparty Discount Rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Contingent consideration   0.0630
Contingent consideration, included in Accounts payable and accrued liabilities | Weighted Average | Discounted Cash Flow | Risk-Adjusted Discount Rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Contingent consideration 0.1200 0.1150
Contingent consideration, included in Accounts payable and accrued liabilities | Weighted Average | Discounted Cash Flow | EBITDA Volatility    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Contingent consideration 0.3500 0.3500
Contingent consideration, included in Accounts payable and accrued liabilities | Weighted Average | Discounted Cash Flow | Counterparty Discount Rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Contingent consideration   0.0630
Market risk benefits liability | Discounted Cash Flow    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Liabilities, fair value $ 968 $ 903
Market risk benefits liability | Minimum | Discounted Cash Flow | Mortality Multiplier    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.8000 0.8000
Market risk benefits liability | Minimum | Discounted Cash Flow | Surrender Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.0025 0.0025
Market risk benefits liability | Minimum | Discounted Cash Flow | Partial Withdrawal Rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.0000 0.0000
Market risk benefits liability | Minimum | Discounted Cash Flow | Non-Performance Spread    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.0054 0.0043
Market risk benefits liability | Minimum | Discounted Cash Flow | GMWB Utilization    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.5000 0.5000
Market risk benefits liability | Maximum | Discounted Cash Flow | Mortality Multiplier    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 1.1500 1.1500
Market risk benefits liability | Maximum | Discounted Cash Flow | Surrender Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.3000 0.3000
Market risk benefits liability | Maximum | Discounted Cash Flow | Partial Withdrawal Rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.2564 0.2564
Market risk benefits liability | Maximum | Discounted Cash Flow | Non-Performance Spread    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.0101 0.0085
Market risk benefits liability | Maximum | Discounted Cash Flow | GMWB Utilization    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.7500 0.7500
Market risk benefits liability | Weighted Average | Discounted Cash Flow | Mortality Multiplier    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 1.0000 1.0000
Market risk benefits liability | Weighted Average | Discounted Cash Flow | Surrender Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.0523 0.0533
Market risk benefits liability | Weighted Average | Discounted Cash Flow | Partial Withdrawal Rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.0247 0.0247
Market risk benefits liability | Weighted Average | Discounted Cash Flow | Non-Performance Spread    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.0081 0.0064
Market risk benefits liability | Weighted Average | Discounted Cash Flow | GMWB Utilization    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market risk benefit 0.6334 0.6303