Investments (excluding Consolidated Investment Entities) - Unrealized Capital Losses 1 (Details) $ in Millions	9 Months Ended
	Sep. 30, 2022 USD ($) security	Dec. 31, 2021 USD ($) security
Available-for-sale Securities, Including Securities Pledged [Line Items]
Available-for-sale Securities, change in loss position	$ 3,699
Total Unrealized Capital Losses	3,848	$ 149
More than twelve months below amortized cost, Unrealized Capital Loss	$ 741	$ 53
More than twelve months below amortized cost, total number of securities in an unrealized loss position | security	787	349
Commercial mortgage-backed securities
Available-for-sale Securities, Including Securities Pledged [Line Items]
Total Unrealized Capital Losses	$ 484	$ 22
More than twelve months below amortized cost, Unrealized Capital Loss	$ 88	$ 10
More than twelve months below amortized cost, total number of securities in an unrealized loss position | security	98	32
Fair value decline below amortized cost greater than 20%
Available-for-sale Securities, Including Securities Pledged [Line Items]
More than twelve months below amortized cost, Unrealized Capital Loss	$ 6
More than twelve months below amortized cost, total number of securities in an unrealized loss position | security	5