Reinsurance	3 Months Ended
Mar. 31, 2019
Reinsurance [Abstract]
Reinsurance	8. Reinsurance Modified Coinsurance Reinsurance Transaction Some portions of our annuity business have been reinsured on a modified coinsurance (“Modco”) basis with other companies. In a Modco program, 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 and fixed indexed annuity products. We hold assets in support of reserves associated with the transaction in a Modco investment portfolio that included fixed maturity AFS securities, trading securities, equity securities, commercial mortgage loans, derivative investments, other investments and cash that had carrying values of $5.1 billion, $1.9 billion, $49 million, $186 million, $120 million, $85 million and $78 million, respectively, as of March 31, 2019. In addition, the portfolio was supported by $237 million of over-collateralization and a $219 million letter of credit as of March 31, 2019. In repositioning the Modco investment portfolio, purchases of securities classified as trading during the first quarter of 2019 primarily resulted in negative cash flows from operating activities that were largely offset by sales of securities classified as AFS within investing activities in our Consolidated Statements of Cash Flows. See “Realized Gain (Loss)” in Note 5 for information on reinsurance related embedded derivatives.

8. Reinsurance

Modified Coinsurance Reinsurance Transaction

Some portions of our annuity business have been reinsured on a modified coinsurance (“Modco”) basis with other companies. In a Modco program, 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 and fixed indexed annuity products. We hold assets in support of reserves associated with the transaction in a Modco investment portfolio that included fixed maturity AFS securities, trading securities, equity securities, commercial mortgage loans, derivative investments, other investments and cash that had carrying values of $5.1 billion, $1.9 billion, $49 million, $186 million, $120 million, $85 million and $78 million, respectively, as of March 31, 2019. In addition, the portfolio was supported by $237 million of over-collateralization and a $219 million letter of credit as of March 31, 2019.

In repositioning the Modco investment portfolio, purchases of securities classified as trading during the first quarter of 2019 primarily resulted in negative cash flows from operating activities that were largely offset by sales of securities classified as AFS within investing activities in our Consolidated Statements of Cash Flows.

See “Realized Gain (Loss)” in Note 5 for information on reinsurance related embedded derivatives.