Basis of Financial Statements - Owned Distribution Investments (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2024 |
Sep. 30, 2023 |
Sep. 30, 2024 |
Sep. 30, 2023 |
|
| Distribution Investments And Affiliates | Commission Fees Paid | ||||
| Business Acquisition [Line Items] | ||||
| Payments for commissions | $ 16 | $ 37 | $ 110 | $ 114 |