Reinsurance	9 Months Ended
Sep. 30, 2021
Reinsurance [Abstract]
Reinsurance	7. Reinsurance Credit Losses on Reinsurance-related Assets In connection with our recognition of an allowance for credit losses for reinsurance-related assets, we perform a quantitative analysis using a probability of loss approach to estimate expected credit losses for reinsurance recoverables, inclusive of similar assets recognized using the deposit method of accounting. As of September 30, 2021, our allowance for credit losses for reinsurance-related assets was $198 million. There have been no material changes to the allowance for credit losses for the nine months ended September 30, 2021. Modco Agreements Some portions of our annuity business have been reinsured on a Modco basis with other companies. In a Modco agreement, we as the ceding company retain the reserves, as well as the assets backing those reserves, and the reinsurer shares proportionally in all financial terms of the reinsured policies based on their respective percentage of the risk. Effective October 1, 2018, we entered into one such Modco agreement with Athene Holding Ltd. (“Athene”) to reinsure fixed annuity products, which resulted in a deposit asset of $5.1 billion and $5.8 billion as of September 30, 2021, and December 31, 2020, respectively, within other assets on our Consolidated Balance Sheets. We held assets in support of reserves associated with the transaction in a Modco investment portfolio, which consisted of the following (in millions): As ofAs of September 30,December 31, 20212020 Fixed maturity AFS securities $ 1,114 $ 1,531 Trading securities 3,096 3,357 Equity securities 27 17 Mortgage loans on real estate 792 832 Derivative investments 86 103 Other investments 251 167 Cash and invested cash 207 92 Accrued investment income 36 42 Other assets 25 3 Total $ 5,634 $ 6,144 In addition, the portfolio was supported by $166 million of over-collateralization and a $152 million letter of credit as of September 30, 2021. Reinsurance Transaction Our previously announced reinsurance transaction with Security Life of Denver Insurance Company, a subsidiary of Resolution Life, to reinsure liabilities under a block of in-force executive benefit and universal life policies in our Life Insurance business became effective as of October 1, 2021. The agreement is structured as coinsurance for the general account reserves and Modco for the separate account reserves. The $1.2 billion in proceeds from the transaction will predominantly be used to fund incremental share repurchases that we expect to be completed by the end of the first quarter of 2022, with the remainder to be used for general corporate purposes, primarily paying down debt.

Reinsurance

9 Months Ended

Sep. 30, 2021

7. Reinsurance Credit Losses on Reinsurance-related Assets In connection with our recognition of an allowance for credit losses for reinsurance-related assets, we perform a quantitative analysis using a probability of loss approach to estimate expected credit losses for reinsurance recoverables, inclusive of similar assets recognized using the deposit method of accounting. As of September 30, 2021, our allowance for credit losses for reinsurance-related assets was $198 million. There have been no material changes to the allowance for credit losses for the nine months ended September 30, 2021. Modco Agreements Some portions of our annuity business have been reinsured on a Modco basis with other companies. In a Modco agreement, we as the ceding company retain the reserves, as well as the assets backing those reserves, and the reinsurer shares proportionally in all financial terms of the reinsured policies based on their respective percentage of the risk. Effective October 1, 2018, we entered into one such Modco agreement with Athene Holding Ltd. (“Athene”) to reinsure fixed annuity products, which resulted in a deposit asset of $5.1 billion and $5.8 billion as of September 30, 2021, and December 31, 2020, respectively, within other assets on our Consolidated Balance Sheets. We held assets in support of reserves associated with the transaction in a Modco investment portfolio, which consisted of the following (in millions): As ofAs of September 30,December 31, 20212020 Fixed maturity AFS securities $ 1,114 $ 1,531 Trading securities 3,096 3,357 Equity securities 27 17 Mortgage loans on real estate 792 832 Derivative investments 86 103 Other investments 251 167 Cash and invested cash 207 92 Accrued investment income 36 42 Other assets 25 3 Total $ 5,634 $ 6,144 In addition, the portfolio was supported by $166 million of over-collateralization and a $152 million letter of credit as of September 30, 2021. Reinsurance Transaction Our previously announced reinsurance transaction with Security Life of Denver Insurance Company, a subsidiary of Resolution Life, to reinsure liabilities under a block of in-force executive benefit and universal life policies in our Life Insurance business became effective as of October 1, 2021. The agreement is structured as coinsurance for the general account reserves and Modco for the separate account reserves. The $1.2 billion in proceeds from the transaction will predominantly be used to fund incremental share repurchases that we expect to be completed by the end of the first quarter of 2022, with the remainder to be used for general corporate purposes, primarily paying down debt.