Investments (excluding Consolidated Investment Entities) - CMO's, Repurchase Agreements and Securities Pledged (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2022	Dec. 31, 2021
Available-for-sale Securities, Including Securities Pledged [Line Items]
Initial collateral required, percent of market value of loaned securities	102.00%
Securities received as collateral	$ 100	$ 117
Payables under securities loan and repurchase agreements, including collateral held	1,378	1,183
Collateral Pledged
Available-for-sale Securities, Including Securities Pledged [Line Items]
Securities Sold under Agreements to Repurchase, Asset	0
Securities pledged as collateral
Available-for-sale Securities, Including Securities Pledged [Line Items]
Securities Pledged under repurchase agreements, carrying value	120	105
Fair value of loaned securities	854	969
Short-term Investments
Available-for-sale Securities, Including Securities Pledged [Line Items]
Securities received as collateral	795	884
Cash collateral, included in Payables
Available-for-sale Securities, Including Securities Pledged [Line Items]
Payables under securities loan and repurchase agreements, including collateral held	$ 795	$ 884
Mortgage-backed securities
Available-for-sale Securities, Including Securities Pledged [Line Items]
Percent collateralized mortgage backed securities including interest-only strip or principal-only strip	39.60%	40.60%
U.S. Treasuries
Available-for-sale Securities, Including Securities Pledged [Line Items]
Payables under securities loan and repurchase agreements, including collateral held	$ 19	$ 42
U.S. Government agencies and authorities
Available-for-sale Securities, Including Securities Pledged [Line Items]
Payables under securities loan and repurchase agreements, including collateral held	0	3
U.S. corporate public securities
Available-for-sale Securities, Including Securities Pledged [Line Items]
Payables under securities loan and repurchase agreements, including collateral held	641	599
Foreign corporate public securities and foreign governments
Available-for-sale Securities, Including Securities Pledged [Line Items]
Payables under securities loan and repurchase agreements, including collateral held	233	357
Payables under securities loan agreements
Available-for-sale Securities, Including Securities Pledged [Line Items]
Payables under securities loan and repurchase agreements, including collateral held	895	1,001
Equity securities, at fair value
Available-for-sale Securities, Including Securities Pledged [Line Items]
Payables under securities loan and repurchase agreements, including collateral held	$ 2	$ 0

The fair value of collateral received by the entity associated with securities borrowed that must be returned if the counterparty fulfills its obligations. It appears on the balance sheet as a liability and has a corresponding asset that appears on the balance sheet called Securities Received as Collateral.

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Fair value of the securities pledged as collateral against securities loaned.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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The carrying value as of the balance sheet date of the assets received as collateral against securities loaned to other broker-dealers. Borrowers of securities generally are required to provide collateral to the lenders of securities, commonly cash but sometimes other securities or standby letters of credit, with a value slightly higher than that of the securities borrowed. In instances where the entity is permitted to sell or re-pledge these securities, the entity reports the fair value of the collateral received and the related obligation to return the collateral as a liability.

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Amount of asset associated with funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price.

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Reference 1: http://www.xbrl.org/2003/role/exampleRef
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Available-for-sale Securities, Including Securities Pledged [Line Items]

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Percent Collateralized Mortgage Backed Securities including Interest-Only Strip or Principal-Only Strip

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Securities Loaned, Initial Collateral Required, Percent of Market Value of Loaned Securities

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Securities Pledged under repurchase agreements, carrying value

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