Investments (Contractholder-Directed Equity Securities and FVO Securities) (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Trading, and Equity Securities, FV-NI, Cost	$ 11,270	$ 10,685
Contracted-Directed Equity Securities and FVO Securities, FV-NI, Unrealized Gains (Losses)	3,539	3,274
Contractholder-directed equity securities and fair value option securities, at estimated fair value (includes $1,985 and $1,751, respectively, relating to variable interest entities)	14,809	13,959
Contract-holder Directed Equity Securities
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Trading, and Equity Securities, FV-NI, Cost	8,623	8,253
Contracted-Directed Equity Securities and FVO Securities, FV-NI, Unrealized Gains (Losses)	2,632	2,495
Contractholder-directed equity securities and fair value option securities, at estimated fair value (includes $1,985 and $1,751, respectively, relating to variable interest entities)	11,255	10,748
Equity securities
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Trading, and Equity Securities, FV-NI, Cost	3,264	3,164
Contracted-Directed Equity Securities and FVO Securities, FV-NI, Unrealized Gains (Losses)	785	855
Contractholder-directed equity securities and fair value option securities, at estimated fair value (includes $1,985 and $1,751, respectively, relating to variable interest entities)	4,049	4,019
Series Mutual Funds and Other
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Trading, and Equity Securities, FV-NI, Cost	5,359	5,089
Contracted-Directed Equity Securities and FVO Securities, FV-NI, Unrealized Gains (Losses)	1,847	1,640
Contractholder-directed equity securities and fair value option securities, at estimated fair value (includes $1,985 and $1,751, respectively, relating to variable interest entities)	7,206	6,729
FVO securities
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Trading, and Equity Securities, FV-NI, Cost	2,647	2,432
Contracted-Directed Equity Securities and FVO Securities, FV-NI, Unrealized Gains (Losses)	907	779
Contractholder-directed equity securities and fair value option securities, at estimated fair value (includes $1,985 and $1,751, respectively, relating to variable interest entities)	3,554	3,211
Securities held by CFEs
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Trading, and Equity Securities, FV-NI, Cost	1,546	1,283
Contracted-Directed Equity Securities and FVO Securities, FV-NI, Unrealized Gains (Losses)	(29)	0
Contractholder-directed equity securities and fair value option securities, at estimated fair value (includes $1,985 and $1,751, respectively, relating to variable interest entities)	1,517	1,283
General account and other securities
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Trading, and Equity Securities, FV-NI, Cost	1,101	1,149
Contracted-Directed Equity Securities and FVO Securities, FV-NI, Unrealized Gains (Losses)	936	779
Contractholder-directed equity securities and fair value option securities, at estimated fair value (includes $1,985 and $1,751, respectively, relating to variable interest entities)	$ 2,037	$ 1,928

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