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Fair Value of Financial Instruments - Changes to Fair Value of Financial Instruments Level 3 (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Fixed maturity securities available-for-sale: |  |  |  |
Assets, Total Gains (Losses) Included in Earnings | $ (44) | $ (3) |  |
Assets, Total Gains (Losses) Included in AOCI | 49 | (127) |  |
Assets, Purchases | 848 | 1,671 |  |
Assets, Sales | (46) | (3) |  |
Assets, Settlements | (300) | (270) |  |
Assets, Net transfer In (Out) of Level 3 | (145) | (79) |  |
Change in Unrealized Included in OCI | 50 | (141) |  |
Liabilities |  |  |  |
Liabilities, Total Gains (Losses) Included in Earnings | (780) | (283) | $ (198) |
Liabilities, Total Gains (Losses) Included in AOCI | 0 | 0 | 0 |
Liabilities, Purchases | 576 | 138 | 765 |
Liabilities, Sales | 0 | 0 | 0 |
Liabilities, Settlements | (45) | (21) | (110) |
Liabilities, Net transfer In (Out) of Level 3 | $ 0 | 0 | 0 |
Change in Unrealized Gains (Losses) Included in OCI |  | $ 0 | $ 0 |
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Recognized gains and losses, net | Recognized gains and losses, net | Recognized gains and losses, net | Recognized gains and losses, net
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] | Unrealized (loss) gain on investments and other financial instruments, net of adjustments to intangible assets and unearned revenue (excluding investments in unconsolidated affiliates) | Unrealized (loss) gain on investments and other financial instruments, net of adjustments to intangible assets and unearned revenue (excluding investments in unconsolidated affiliates) | Unrealized (loss) gain on investments and other financial instruments, net of adjustments to intangible assets and unearned revenue (excluding investments in unconsolidated affiliates) | Unrealized (loss) gain on investments and other financial instruments, net of adjustments to intangible assets and unearned revenue (excluding investments in unconsolidated affiliates)
Level 3 |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |
Balance at Beginning of Period | $ 8,759 | $ 6,315 | $ 8,286 | $ 5,641
Balance at End of Period | 9,121 | 7,539 | 9,121 | 7,539
Liabilities |  |  |  |
Balance at Beginning of Period | 4,134 | 3,233 | 3,397 | 4,352
Balance at End of Period | 3,850 | 3,017 | 3,850 | 3,017
FIA/ IUL embedded derivatives, included in contractholder funds |  |  |  |
Liabilities |  |  |  |
Balance at Beginning of Period | 3,821 | 2,941 | 3,115 | 3,883
Liabilities, Total Gains (Losses) Included in Earnings | (796) | (283) | (214) | (1,442)
Liabilities, Total Gains (Losses) Included in AOCI | 0 | 0 | 0 | 0
Liabilities, Purchases | 576 | 138 | 765 | 410
Liabilities, Sales | 0 | 0 | 0 | 0
Liabilities, Settlements | (45) | (21) | (110) | (76)
Liabilities, Net transfer In (Out) of Level 3 | 0 | 0 | 0 | 0
Balance at End of Period | 3,556 | 2,775 | 3,556 | 2,775
Change in Unrealized Gains (Losses) Included in OCI | 0 | 0 | 0 | 0
Interest Rate Swap |  |  |  |
Liabilities |  |  |  |
Balance at Beginning of Period | 0 |  | 0 |
Liabilities, Total Gains (Losses) Included in Earnings | 16 |  | 16 |
Liabilities, Total Gains (Losses) Included in AOCI | 0 |  |  |
Liabilities, Purchases | 0 |  | 0 |
Liabilities, Sales | 0 |  | 0 |
Liabilities, Settlements | 0 |  | 0 |
Liabilities, Net transfer In (Out) of Level 3 | 0 |  | 0 |
Balance at End of Period | 16 |  | 16 |
Change in Unrealized Gains (Losses) Included in OCI | 0 |  | 0 |
Asset-backed securities |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |
Balance at Beginning of Period | 6,510 | 4,677 | 6,263 | 3,959
Assets, Total Gains (Losses) Included in Earnings | (45) | 0 | (56) | 1
Assets, Total Gains (Losses) Included in AOCI | 75 | (71) | 108 | (343)
Assets, Purchases | 536 | 1,530 | 1,331 | 2,757
Assets, Sales | (27) | 0 | (125) | (39)
Assets, Settlements | (171) | (123) | (557) | (401)
Assets, Net transfer In (Out) of Level 3 | (121) | (61) | (207) | 18
Balance at End of Period | 6,757 | 5,952 | 6,757 | 5,952
Change in Unrealized Included in OCI | 75 | (80) | 107 | (371)
Commercial mortgage-backed securities |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |
Balance at Beginning of Period | 17 | 37 | 37 | 35
Assets, Total Gains (Losses) Included in Earnings | 0 | 0 | 0 | 0
Assets, Total Gains (Losses) Included in AOCI | 0 | 0 | 1 | (5)
Assets, Purchases | 10 | 0 | 22 | 0
Assets, Sales | 0 | 0 | 0 | 0
Assets, Settlements | 0 | 0 | 0 | 0
Assets, Net transfer In (Out) of Level 3 | 0 | 0 | (33) | 7
Balance at End of Period | 27 | 37 | 27 | 37
Change in Unrealized Included in OCI | 0 | 0 | 1 | (4)
Corporates |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |
Balance at Beginning of Period | 1,628 | 1,374 | 1,440 | 1,135
Assets, Total Gains (Losses) Included in Earnings | 0 | 0 | (1) | 0
Assets, Total Gains (Losses) Included in AOCI | (21) | (53) | (77) | (190)
Assets, Purchases | 162 | 135 | 423 | 521
Assets, Sales | 0 | 0 | (1) | 0
Assets, Settlements | (24) | (147) | (43) | (178)
Assets, Net transfer In (Out) of Level 3 | (1) | (9) | 3 | 12
Balance at End of Period | 1,744 | 1,300 | 1,744 | 1,300
Change in Unrealized Included in OCI | (21) | (57) | (77) | (191)
Municipals |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |
Balance at Beginning of Period | 49 | 33 | 29 | 43
Assets, Total Gains (Losses) Included in Earnings | 0 | 0 | 0 | 0
Assets, Total Gains (Losses) Included in AOCI | (2) | (3) | 18 | (13)
Assets, Purchases | 0 | 0 | 0 | 0
Assets, Sales | 0 | 0 | 0 | 0
Assets, Settlements | 0 | 0 | 0 | 0
Assets, Net transfer In (Out) of Level 3 | 0 | 0 | 0 | 0
Balance at End of Period | 47 | 30 | 47 | 30
Change in Unrealized Included in OCI | (2) | (4) | 18 | (13)
Residential mortgage-backed securities |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |
Balance at Beginning of Period | 28 | 9 | 302 | 0
Assets, Total Gains (Losses) Included in Earnings | 0 | 0 | 1 | 0
Assets, Total Gains (Losses) Included in AOCI | (1) | 0 | 7 | 0
Assets, Purchases | 0 | 5 | 32 | 14
Assets, Sales | 0 | 0 | 0 | 0
Assets, Settlements | (1) | 0 | (9) | 0
Assets, Net transfer In (Out) of Level 3 | (23) | (9) | (330) | (9)
Balance at End of Period | 3 | 5 | 3 | 5
Change in Unrealized Included in OCI | (1) | 0 | 7 | 0
Foreign Governments |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |
Balance at Beginning of Period | 16 | 16 | 16 | 18
Assets, Total Gains (Losses) Included in Earnings | 0 | 0 | 0 | 0
Assets, Total Gains (Losses) Included in AOCI | 0 | 0 | 0 | (2)
Assets, Purchases | 0 | 0 | 0 | 0
Assets, Sales | 0 | 0 | 0 | 0
Assets, Settlements | 0 | 0 | 0 | 0
Assets, Net transfer In (Out) of Level 3 | 0 | 0 | 0 | 0
Balance at End of Period | 16 | 16 | 16 | 16
Change in Unrealized Included in OCI | 0 | 0 | 0 | (1)
Investment in unconsolidated affiliates |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |
Balance at Beginning of Period | 197 | 21 | 23 | 21
Assets, Total Gains (Losses) Included in Earnings | 0 | 0 | 0 | 0
Assets, Total Gains (Losses) Included in AOCI | 0 | 0 | 0 | 0
Assets, Purchases | 75 | 0 | 249 | 0
Assets, Sales | 0 | 0 | 0 | 0
Assets, Settlements | 0 | 0 | 0 | 0
Assets, Net transfer In (Out) of Level 3 | 0 | 0 | 0 | 0
Balance at End of Period | 272 | 21 | 272 | 21
Change in Unrealized Included in OCI | 0 | 0 | 0 |
Short term investments |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |
Balance at Beginning of Period | 126 | 0 | 0 | 321
Assets, Total Gains (Losses) Included in Earnings | 0 | 0 | 0 | 0
Assets, Total Gains (Losses) Included in AOCI | 0 | 0 | 0 | (1)
Assets, Purchases | 65 | 0 | 191 | 20
Assets, Sales | (19) | 0 | (19) | 0
Assets, Settlements | (103) | 0 | (103) | 0
Assets, Net transfer In (Out) of Level 3 | 0 | 0 | 0 | (340)
Balance at End of Period | 69 | 0 | 69 | 0
Change in Unrealized Included in OCI | 0 | 0 | 0 | (1)
Preferred securities |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |
Balance at Beginning of Period | 7 | 1 | 1 | 2
Assets, Total Gains (Losses) Included in Earnings | 0 | 0 | 0 | 0
Assets, Total Gains (Losses) Included in AOCI | 1 | 0 | 1 | (1)
Assets, Purchases | 0 | 0 | 0 | 0
Assets, Sales | 0 | 0 | 0 | 0
Assets, Settlements | 0 | 0 | 0 | 0
Assets, Net transfer In (Out) of Level 3 | 0 | 0 | 6 | 0
Balance at End of Period | 8 | 1 | 8 | 1
Change in Unrealized Included in OCI | 1 | 0 | 1 | (1)
Equity securities |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |
Balance at Beginning of Period | 14 | 10 | 10 | 9
Assets, Total Gains (Losses) Included in Earnings | 1 | 0 | 1 | 0
Assets, Total Gains (Losses) Included in AOCI | 0 | 0 | 0 | 0
Assets, Purchases | 0 | 1 | 0 | 2
Assets, Sales | 0 | (1) | 0 | (1)
Assets, Settlements | 0 | 0 | 0 | 0
Assets, Net transfer In (Out) of Level 3 | 0 | 0 | 4 | 0
Balance at End of Period | 15 | 10 | 15 | 10
Change in Unrealized Included in OCI | 0 | 0 | 0 | 0
Available-for-sale embedded derivative |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |
Balance at Beginning of Period | 26 | 24 | 23 | 34
Assets, Total Gains (Losses) Included in Earnings | 0 | (2) | 0 | (12)
Assets, Total Gains (Losses) Included in AOCI | (3) | 0 | 0 | 0
Assets, Purchases | 0 | 0 | 0 | 0
Assets, Sales | 0 | 0 | 0 | 0
Assets, Settlements | 0 | 0 | 0 | 0
Assets, Net transfer In (Out) of Level 3 | 0 | 0 | 0 | 0
Balance at End of Period | 23 | 22 | 23 | 22
Change in Unrealized Included in OCI | (3) | 0 | 0 | 0
Credit linked note |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |
Balance at Beginning of Period | 13 | 17 | 15 | 23
Assets, Total Gains (Losses) Included in Earnings | 0 | (1) | 0 | (1)
Assets, Total Gains (Losses) Included in AOCI | 0 | 0 | 0 | (3)
Assets, Purchases | 0 | 0 | 0 | 0
Assets, Sales | 0 | (2) | 0 | (2)
Assets, Settlements | (1) | 0 | (3) | (3)
Assets, Net transfer In (Out) of Level 3 | 0 | 0 | 0 | 0
Balance at End of Period | 12 | 14 | 12 | 14
Change in Unrealized Included in OCI | 0 | 0 | 0 | 0
Secured borrowing receivable |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |
Balance at Beginning of Period | 10 | 10 | 10 | 0
Assets, Total Gains (Losses) Included in Earnings | 0 | 0 | 0 | 0
Assets, Total Gains (Losses) Included in AOCI | 0 | 0 | 0 | 0
Assets, Purchases | 0 | 0 | 0 | 0
Assets, Sales | 0 | 0 | 0 | 0
Assets, Settlements | 0 | 0 | 0 | 0
Assets, Net transfer In (Out) of Level 3 | 0 | 0 | 0 | 10
Balance at End of Period | 10 | 10 | 10 | 10
Change in Unrealized Included in OCI | 0 | 0 | 0 | 0
Subtotal Level 3 assets at fair value |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |
Balance at Beginning of Period |  |  | 8,169 | 5,600
Assets, Total Gains (Losses) Included in Earnings |  |  | (55) | (12)
Assets, Total Gains (Losses) Included in AOCI |  |  | 58 | (558)
Assets, Purchases |  |  | 2,248 | 3,314
Assets, Sales |  |  | (145) | (42)
Assets, Settlements |  |  | (715) | (582)
Assets, Net transfer In (Out) of Level 3 |  |  | (557) | (302)
Balance at End of Period | 9,003 | 7,418 | 9,003 | 7,418
Change in Unrealized Included in OCI |  |  | 57 | (582)
Subtotal Level 3 assets at fair value | Level 3 |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |
Balance at Beginning of Period | 8,641 | 6,229 |  |
Balance at End of Period | 9,003 | 7,418 | 9,003 | 7,418
Market risk benefits asset |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |
Balance at End of Period | 118 |  | 118 |
Market risk benefits asset | Level 3 |  |  |  |
Fixed maturity securities available-for-sale: |  |  |  |
Balance at Beginning of Period | 118 | 86 | 117 | 41
Balance at End of Period | 118 | 121 | 118 | 121
Subtotal Level 3 liabilities at fair value |  |  |  |
Liabilities |  |  |  |
Balance at Beginning of Period |  |  | 3,115 | 3,883
Liabilities, Total Gains (Losses) Included in Earnings |  |  |  | (1,442)
Liabilities, Total Gains (Losses) Included in AOCI |  |  |  | 0
Liabilities, Purchases |  |  |  | 410
Liabilities, Sales |  |  |  | 0
Liabilities, Settlements |  |  |  | (76)
Liabilities, Net transfer In (Out) of Level 3 |  |  |  | 0
Balance at End of Period | 3,572 | 2,775 | 3,572 | 2,775
Change in Unrealized Gains (Losses) Included in OCI | 0 |  |  | 0
Subtotal Level 3 liabilities at fair value | Level 3 |  |  |  |
Liabilities |  |  |  |
Balance at Beginning of Period | 3,821 | 2,941 |  |
Balance at End of Period | 3,572 | 2,775 | 3,572 | 2,775
Market risk benefits liability | Level 3 |  |  |  |
Liabilities |  |  |  |
Balance at Beginning of Period | 313 | 292 | 282 | 469
Balance at End of Period | $ 278 | $ 242 | $ 278 | $ 242

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- Definition Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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- Definition Amount of purchases of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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- Definition Amount of transfers of financial instrument classified as a liability into (out of) level 3 of the fair value hierarchy. + References No definition available. + Details
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- Definition Indicates line item in statement in which net income is reported that includes gain (loss) from liability measured at fair value using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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