XML 93 R74.htm IDEA: XBRL DOCUMENT
v3.23.2

Fair Value - Gross Components of Purchases, Sales, Issuances and Settlements, net (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022 | Mar. 31, 2023 | Dec. 31, 2022 | Mar. 31, 2022 | Jan. 01, 2022
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases | $ 9,427 | $ 5,418 | $ 14,930 | $ 12,658 |  |  |  |
Issuances | 0 | 0 | 0 | 0 |  |  |  |
Sales | (268) | (1,416) | (327) | (3,734) |  |  |  |
Settlements | (1,777) | (3,197) | (3,061) | (4,746) |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 7,382 | 805 | 11,542 | 4,178 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 | 1,783 | 5,008 | 2,225 | 17,402 |  |  |  |
Transfers (out) | (2,695) | (13,463) | (3,258) | (19,793) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | (912) | (8,455) | (1,033) | (2,391) |  |  |  |
Purchases | 0 | 0 | 0 | 0 |  |  |  |
Issuances | (558) | (337) | (1,135) | (597) |  |  |  |
Sales | 0 | 0 | 0 | 0 |  |  |  |
Settlements | (162) | (127) | (306) | (276) |  |  |  |
Purchases, (Sales), Issuances, (Settlements), Liabilities | (396) | (210) | (829) | (321) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3 | 0 | 0 | 0 | 0 |  |  |  |
Transfers (out) | 0 | 0 | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net | 0 | 0 | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 56,969 | 39,688 | 56,969 | 39,688 | $ 50,833 | $ 45,582 | $ 51,565 | $ 45,752
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value | 10,992 | 7,990 | 10,992 | 7,990 | 9,585 | 8,525 | 9,666 | 10,908
Trading securities | Consolidated Entity, excluding Affiliated Entity |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | (3) | 2 | (7) | 8 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | (2) | (33) | (11) | (13) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 38 | 58 | 38 | 58 | 42 | 53 | 90 | 69
Trading securities | Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases | 25 | 7 | 27 | 36 |  |  |  |
Issuances | 0 | 0 | 0 | 0 |  |  |  |
Sales | (37) | (787) | (37) | (1,052) |  |  |  |
Settlements | (2) | (28) | (3) | (46) |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | (14) | (808) | (13) | (1,062) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 | 0 | 1,443 | 0 | 1,443 |  |  |  |
Transfers (out) | 0 | 0 | 0 | (1,260) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 0 | 1,443 | 0 | 183 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 867 | 891 | 867 | 891 | 885 | 878 | 252 | 1,771
Trading securities | Variable Interest Entities |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases | 10 | 0 | 20 | 0 |  |  |  |
Issuances | 0 | 0 | 0 | 0 |  |  |  |
Sales | (18) | 0 | (30) | 0 |  |  |  |
Settlements | 0 | 0 | 0 | 0 |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | (8) | 0 | (10) | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 | 817 | 330 | 836 | 330 |  |  |  |
Transfers (out) | (28) | 0 | (31) | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 789 | 330 | 805 | 330 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 1,425 | 330 | 1,425 | 330 | 648 | 622 | 0 | 0
Trading securities | Consolidated Entity, Excluding Variable Interest Entities (VIE) and Investments in Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  |  | 8 | 8 |  |  |  |
Issuances |  |  | 0 | 0 |  |  |  |
Sales |  |  | 0 | 0 |  |  |  |
Settlements |  |  | (15) | 0 |  |  |  |
Purchases, (Sales), Issuances, (Settlements) |  |  | (7) | 8 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  |  | 5 | 39 |  |  |  |
Transfers (out) |  |  | (16) | (52) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  |  | (11) | (13) |  |  |  |
Trading securities | Investments, excluding investments in Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases | 8 | 2 |  |  |  |  |  |
Issuances | 0 | 0 |  |  |  |  |  |
Sales | 0 | 0 |  |  |  |  |  |
Settlements | (11) | 0 |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | (3) | 2 |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 | 0 | 9 |  |  |  |  |  |
Transfers (out) | (2) | (42) |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | (2) | (33) |  |  |  |  |  |
Equity securities | Consolidated Entity, excluding Affiliated Entity |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  | 0 |  |  |  |  |  |
Issuances |  | 0 |  |  |  |  |  |
Sales |  | (3) |  |  |  |  |  |
Settlements |  | 0 |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 0 | (3) | 0 | (3) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  | 19 |  |  |  |  |  |
Transfers (out) |  | (400) |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 0 | (381) | (13) | (381) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 67 | 62 | 67 | 62 | 71 | 92 | 438 | 429
Equity securities | Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  | 0 | 0 | 0 |  |  |  |
Issuances |  | 0 | 0 | 0 |  |  |  |
Sales |  | (119) | 0 | (119) |  |  |  |
Settlements |  | 0 | (32) | 0 |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 0 | (119) | (32) | (119) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  | 125 | 0 | 125 |  |  |  |
Transfers (out) |  | 0 | 0 | (113) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 0 | 125 | 0 | 12 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 252 | 163 | 252 | 163 | 251 | 279 | 166 | 284
Equity securities | Consolidated Entity, Excluding Variable Interest Entities (VIE) and Investments in Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  |  | 0 | 0 |  |  |  |
Issuances |  |  | 0 | 0 |  |  |  |
Sales |  |  | 0 | (3) |  |  |  |
Settlements |  |  | 0 | 0 |  |  |  |
Purchases, (Sales), Issuances, (Settlements) |  |  | 0 | (3) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  |  | 0 | 19 |  |  |  |
Transfers (out) |  |  | (13) | (400) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  |  | (13) | (381) |  |  |  |
Investment funds | Consolidated Entity, excluding Affiliated Entity |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) |  | 0 |  | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  | 0 |  | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value |  | 19 |  | 19 |  |  | 19 | 18
Investment funds | Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  |  | 32 | 0 |  |  |  |
Issuances |  |  | 0 | 0 |  |  |  |
Sales |  |  | 0 | (34) |  |  |  |
Settlements |  |  | 0 | 0 |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 0 | 0 | 32 | (34) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  |  | 0 | 0 |  |  |  |
Transfers (out) |  |  | 0 | (2,031) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 0 | 0 | 0 | (2,031) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 1,061 | 818 | 1,061 | 818 | 1,034 | 959 | 814 | 2,855
Investment funds | Variable Interest Entities |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases | 0 | 33 | 0 | 286 |  |  |  |
Issuances | 0 | 0 | 0 | 0 |  |  |  |
Sales | 0 | (110) | (8) | (125) |  |  |  |
Settlements | 0 | 0 | 0 | 0 |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 0 | (77) | (8) | 161 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 | 327 | 1,006 | 475 | 11,087 |  |  |  |
Transfers (out) | (1,562) | (10,486) | (1,610) | (11,520) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | (1,235) | (9,480) | (1,135) | (433) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 1,351 | 1,053 | 1,351 | 1,053 | 2,581 | 2,471 | 10,577 | 1,297
Other | Variable Interest Entities |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) |  | 31 |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  | (1,902) |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value |  | 31 |  | 31 |  |  | 1,902 |
Foreign governments | Available-for-sale Securities | Consolidated Entity, excluding Affiliated Entity |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) |  | 0 | 47 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  | 0 | 0 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 48 | 2 | 48 | 2 |  | 1 | 2 |
Foreign governments | Available-for-sale Securities | Consolidated Entity, Excluding Variable Interest Entities (VIE) and Investments in Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases | 53 |  |  |  |  |  |  |
Issuances | 0 |  |  |  |  |  |  |
Sales | 0 |  |  |  |  |  |  |
Settlements | (6) |  |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 47 |  |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 | 0 |  |  |  |  |  |  |
Transfers (out) | 0 |  |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 0 |  |  |  |  |  |  |
Foreign governments | AFS securities | Consolidated Entity, excluding Affiliated Entity |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 47 |  |  | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 0 |  |  | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 48 | 2 | 48 | 2 | 1 |  |  | 2
Corporate | Available-for-sale Securities | Consolidated Entity, excluding Affiliated Entity |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases | 1,104 | 129 |  |  |  |  |  |
Issuances | 0 | 0 |  |  |  |  |  |
Sales | 0 | (2) |  |  |  |  |  |
Settlements | (34) | (87) |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 1,070 | 40 | 1,196 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 | 0 | 150 |  |  |  |  |  |
Transfers (out) | (244) | (43) |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | (244) | 107 | (424) |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 2,460 | 1,588 | 2,460 | 1,588 |  | 1,665 | 1,499 |
Corporate | Available-for-sale Securities | Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases | 1 | 52 | 157 |  |  |  |  |
Issuances | 0 | 0 | 0 |  |  |  |  |
Sales | 0 | 0 | 0 |  |  |  |  |
Settlements | (3) | (10) | (6) |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | (2) | 42 | 151 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 | 215 | 53 | 215 |  |  |  |  |
Transfers (out) | 0 | 0 | 0 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 215 | 53 | 215 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 1,171 |  | 1,171 |  |  | 812 | 761 |
Corporate | Available-for-sale Securities | Consolidated Entity, Excluding Variable Interest Entities (VIE) and Investments in Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  |  | 1,312 |  |  |  |  |
Issuances |  |  | 0 |  |  |  |  |
Sales |  |  | 0 |  |  |  |  |
Settlements |  |  | (116) |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) |  |  | 1,196 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  |  | 29 |  |  |  |  |
Transfers (out) |  |  | (453) |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  |  | (424) |  |  |  |  |
Corporate | AFS securities | Consolidated Entity, excluding Affiliated Entity |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 1,070 |  |  | 180 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | (244) |  |  | 149 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 2,460 | 1,588 | 2,460 | 1,588 | 1,622 |  |  | 1,339
Corporate | AFS securities | Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  |  |  | 367 |  |  |  |
Issuances |  |  |  | 0 |  |  |  |
Sales |  |  |  | (217) |  |  |  |
Settlements |  |  |  | (14) |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | (2) |  |  | 136 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  |  |  | 53 |  |  |  |
Transfers (out) |  |  |  | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 215 |  |  | 53 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 1,171 | 849 | 1,171 | 849 | 959 |  |  | 670
Corporate | AFS securities | Consolidated Entity, Excluding Variable Interest Entities (VIE) and Investments in Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  |  |  | 453 |  |  |  |
Issuances |  |  |  | 0 |  |  |  |
Sales |  |  |  | (170) |  |  |  |
Settlements |  |  |  | (103) |  |  |  |
Purchases, (Sales), Issuances, (Settlements) |  |  |  | 180 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  |  |  | 193 |  |  |  |
Transfers (out) |  |  |  | (44) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  |  |  | 149 |  |  |  |
CLO | Available-for-sale Securities | Consolidated Entity, excluding Affiliated Entity |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  | 0 |  |  |  |  |  |
Issuances |  | 0 |  |  |  |  |  |
Sales |  | 0 |  |  |  |  |  |
Settlements |  | (2) |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) |  | (2) |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  | 0 |  |  |  |  |  |
Transfers (out) |  | 0 |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  | 0 |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value |  | 0 |  | 0 |  |  | 5 |
CLO | Available-for-sale Securities | Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  |  | 185 |  |  |  |  |
Issuances |  |  | 0 |  |  |  |  |
Sales |  |  | 0 |  |  |  |  |
Settlements |  |  | 0 |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) |  | 0 | 185 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  |  | 0 |  |  |  |  |
Transfers (out) |  |  | 0 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  | 0 | 0 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 495 |  | 495 |  |  | 303 | 332 |
CLO | AFS securities | Consolidated Entity, excluding Affiliated Entity |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) |  |  |  | (12) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  |  |  | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value |  | 0 |  | 0 |  |  |  | 14
CLO | AFS securities | Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  |  |  | 130 |  |  |  |
Issuances |  |  |  | 0 |  |  |  |
Sales |  |  |  | 0 |  |  |  |
Settlements |  |  |  | 0 |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 0 |  |  | 130 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  |  |  | 0 |  |  |  |
Transfers (out) |  |  |  | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 0 |  |  | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 495 | 325 | 495 | 325 | 498 |  |  | 202
CLO | AFS securities | Consolidated Entity, Excluding Variable Interest Entities (VIE) and Investments in Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  |  |  | 0 |  |  |  |
Issuances |  |  |  | 0 |  |  |  |
Sales |  |  |  | 0 |  |  |  |
Settlements |  |  |  | (12) |  |  |  |
Purchases, (Sales), Issuances, (Settlements) |  |  |  | (12) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  |  |  | 0 |  |  |  |
Transfers (out) |  |  |  | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  |  |  | 0 |  |  |  |
RMBS | Available-for-sale Securities | Consolidated Entity, excluding Affiliated Entity |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases | 0 | 68 |  |  |  |  |  |
Issuances | 0 | 0 |  |  |  |  |  |
Sales | 0 | 0 |  |  |  |  |  |
Settlements | (3) | 0 |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | (3) | 68 | (3) |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 | 5 | 0 |  |  |  |  |  |
Transfers (out) | (236) | 0 |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | (231) | 0 | (231) |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 6 | 68 | 6 | 68 |  | 232 | 0 |
RMBS | Available-for-sale Securities | Consolidated Entity, Excluding Variable Interest Entities (VIE) and Investments in Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  |  | 1 | 68 |  |  |  |
Issuances |  |  | 0 | 0 |  |  |  |
Sales |  |  | 0 | 0 |  |  |  |
Settlements |  |  | (4) | 0 |  |  |  |
Purchases, (Sales), Issuances, (Settlements) |  |  | (3) | 68 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  |  | 5 | 0 |  |  |  |
Transfers (out) |  |  | (236) | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  |  | (231) | 0 |  |  |  |
RMBS | Available-for-sale Securities | Investments, excluding investments in Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) |  |  |  | 68 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  |  |  | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value |  | 68 |  | 68 |  |  |  | 0
RMBS | AFS securities | Consolidated Entity, excluding Affiliated Entity |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | (3) |  |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | (231) |  |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 6 |  | 6 |  | 238 |  |  |
ABS | Available-for-sale Securities | Consolidated Entity, excluding Affiliated Entity |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases | 1,033 | 746 |  |  |  |  |  |
Issuances | 0 | 0 |  |  |  |  |  |
Sales | (20) | (341) |  |  |  |  |  |
Settlements | (119) | (257) |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 894 | 148 | 1,049 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 | 123 | 30 |  |  |  |  |  |
Transfers (out) | (623) | (304) |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | (500) | (274) | (561) |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 5,305 | 3,594 | 5,305 | 3,594 |  | 4,867 | 3,783 |
ABS | Available-for-sale Securities | Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases | 1,072 | 899 | 2,706 |  |  |  |  |
Issuances | 0 | 0 | 0 |  |  |  |  |
Sales | (162) | (6) | (162) |  |  |  |  |
Settlements | (467) | (1,989) | (686) |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 443 | (1,096) | 1,858 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 | 284 | 1,822 | 284 |  |  |  |  |
Transfers (out) | 0 | 0 | 0 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 284 | 1,822 | 284 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 7,742 |  | 7,742 |  |  | 5,542 | 4,409 |
ABS | Available-for-sale Securities | Consolidated Entity, Excluding Variable Interest Entities (VIE) and Investments in Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  |  | 1,331 |  |  |  |  |
Issuances |  |  | 0 |  |  |  |  |
Sales |  |  | (20) |  |  |  |  |
Settlements |  |  | (262) |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) |  |  | 1,049 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  |  | 338 |  |  |  |  |
Transfers (out) |  |  | (899) |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  |  | (561) |  |  |  |  |
ABS | AFS securities | Consolidated Entity, excluding Affiliated Entity |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 894 |  |  | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | (500) |  |  | 63 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 5,305 | 3,594 | 5,305 | 3,594 | 4,942 |  |  | 3,619
ABS | AFS securities | Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  |  |  | 1,273 |  |  |  |
Issuances |  |  |  | 0 |  |  |  |
Sales |  |  |  | (93) |  |  |  |
Settlements |  |  |  | (2,421) |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 443 |  |  | (1,241) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  |  |  | 1,822 |  |  |  |
Transfers (out) |  |  |  | (1,864) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 284 |  |  | (42) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 7,742 | 5,026 | 7,742 | 5,026 | 7,005 |  |  | 6,445
ABS | AFS securities | Consolidated Entity, Excluding Variable Interest Entities (VIE) and Investments in Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  |  |  | 2,235 |  |  |  |
Issuances |  |  |  | 0 |  |  |  |
Sales |  |  |  | (1,791) |  |  |  |
Settlements |  |  |  | (444) |  |  |  |
Purchases, (Sales), Issuances, (Settlements) |  |  |  | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  |  |  | 368 |  |  |  |
Transfers (out) |  |  |  | (305) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  |  |  | 63 |  |  |  |
CMBS | Available-for-sale Securities | Consolidated Entity, excluding Affiliated Entity |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  | 0 |  |  |  |  |  |
Issuances |  | 0 |  |  |  |  |  |
Sales |  | 0 |  |  |  |  |  |
Settlements |  | 0 |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 0 | 0 | 0 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  | 0 |  |  |  |  |  |
Transfers (out) |  | (10) |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 12 | (10) | 12 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 12 | 0 | 12 | 0 | 0 | 0 | 10 |
CMBS | Available-for-sale Securities | Consolidated Entity, Excluding Variable Interest Entities (VIE) and Investments in Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases | 0 |  | 0 |  |  |  |  |
Issuances | 0 |  | 0 |  |  |  |  |
Sales | 0 |  | 0 |  |  |  |  |
Settlements | 0 |  | 0 |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 0 |  | 0 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 | 12 |  | 12 |  |  |  |  |
Transfers (out) | 0 |  | 0 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 12 |  | 12 |  |  |  |  |
CMBS | AFS securities | Consolidated Entity, excluding Affiliated Entity |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) |  |  |  | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  |  |  | (26) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value |  | 0 |  | 0 |  |  |  | 43
CMBS | AFS securities | Consolidated Entity, Excluding Variable Interest Entities (VIE) and Investments in Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  |  |  | 0 |  |  |  |
Issuances |  |  |  | 0 |  |  |  |
Sales |  |  |  | 0 |  |  |  |
Settlements |  |  |  | 0 |  |  |  |
Purchases, (Sales), Issuances, (Settlements) |  |  |  | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  |  |  | 0 |  |  |  |
Transfers (out) |  |  |  | (26) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  |  |  | (26) |  |  |  |
Foreign Government Debt | Available-for-sale Securities | Consolidated Entity, Excluding Variable Interest Entities (VIE) and Investments in Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  |  | 53 |  |  |  |  |
Issuances |  |  | 0 |  |  |  |  |
Sales |  |  | 0 |  |  |  |  |
Settlements |  |  | (6) |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) |  |  | 47 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  |  | 0 |  |  |  |  |
Transfers (out) |  |  | 0 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  |  | 0 |  |  |  |  |
Mortgage loans | Consolidated Entity, excluding Affiliated Entity |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 4,914 | 2,549 | 7,158 | 5,835 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 0 | 0 | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 34,668 | 25,218 | 34,668 | 25,218 | 29,949 | 27,454 | 23,696 | 21,154
Mortgage loans | Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases | 0 | 36 | 0 | 182 |  |  |  |
Issuances | 0 | 0 | 0 | 0 |  |  |  |
Sales | 0 | 0 | 0 | 0 |  |  |  |
Settlements | (19) | (4) | (23) | (11) |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | (19) | 32 | (23) | 171 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 | 0 | 0 | 0 | 0 |  |  |  |
Transfers (out) | 0 | 0 | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 0 | 0 | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 1,296 | 1,416 | 1,296 | 1,416 | 1,324 | 1,302 | 1,456 | 1,369
Mortgage loans | Variable Interest Entities |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases | 13 | 0 | 59 | 0 |  |  |  |
Issuances | 0 | 0 | 0 | 0 |  |  |  |
Sales | 0 | 0 | 0 | 0 |  |  |  |
Settlements | (2) | (2) | (3) | (154) |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 11 | (2) | 56 | (154) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 | 0 | 21 | 0 | 21 |  |  |  |
Transfers (out) | 0 | (223) | 0 | (223) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 0 | (202) | 0 | (202) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 2,113 | 1,626 | 2,113 | 1,626 | 2,119 | 2,055 | 1,880 | 2,152
Mortgage loans | Consolidated Entity, Excluding Variable Interest Entities (VIE) and Investments in Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  |  | 8,665 | 7,477 |  |  |  |
Issuances |  |  | 0 | 0 |  |  |  |
Sales |  |  | (63) | (130) |  |  |  |
Settlements |  |  | (1,444) | (1,512) |  |  |  |
Purchases, (Sales), Issuances, (Settlements) |  |  | 7,158 | 5,835 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  |  | 0 | 0 |  |  |  |
Transfers (out) |  |  | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  |  | 0 | 0 |  |  |  |
Mortgage loans | Investments, excluding investments in Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases | 5,783 | 3,386 |  |  |  |  |  |
Issuances | 0 | 0 |  |  |  |  |  |
Sales | (31) | (48) |  |  |  |  |  |
Settlements | (838) | (789) |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 4,914 | 2,549 |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 | 0 | 0 |  |  |  |  |  |
Transfers (out) | 0 | 0 |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 0 | 0 |  |  |  |  |  |
Short-term investments | Consolidated Entity, excluding Affiliated Entity |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 0 | 0 | (30) | 30 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 0 | 0 | 26 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 30 | 58 | 30 | 58 | 30 | 36 | 59 | 29
Short-term investments | Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  |  |  | 53 |  |  |  |
Issuances |  |  |  | 0 |  |  |  |
Sales |  |  |  | 0 |  |  |  |
Settlements |  |  |  | 0 |  |  |  |
Purchases, (Sales), Issuances, (Settlements) |  | 0 |  | 53 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  |  |  | 0 |  |  |  |
Transfers (out) |  |  |  | (53) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  | (53) |  | (53) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value |  | 0 |  | 0 |  |  | 53 | 0
Short-term investments | Consolidated Entity, Excluding Variable Interest Entities (VIE) and Investments in Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  |  | 0 | 59 |  |  |  |
Issuances |  |  | 0 | 0 |  |  |  |
Sales |  |  | 0 | 0 |  |  |  |
Settlements |  |  | (30) | (29) |  |  |  |
Purchases, (Sales), Issuances, (Settlements) |  |  | (30) | 30 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  |  | 26 | 0 |  |  |  |
Transfers (out) |  |  | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  |  | 26 | 0 |  |  |  |
Short-term investments | Investments, excluding investments in Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  | 29 |  |  |  |  |  |
Issuances |  | 0 |  |  |  |  |  |
Sales |  | 0 |  |  |  |  |  |
Settlements |  | (29) |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) |  | 0 |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  | 0 |  |  |  |  |  |
Transfers (out) |  | 0 |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  | 0 |  |  |  |  |  |
Short-term investments | Investments, excluding investments in Related Party | Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  | 0 |  |  |  |  |  |
Issuances |  | 0 |  |  |  |  |  |
Sales |  | 0 |  |  |  |  |  |
Settlements |  | 0 |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) |  | 0 |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  | 0 |  |  |  |  |  |
Transfers (out) |  | (53) |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  | (53) |  |  |  |  |  |
Reinsurance recoverable |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 0 | 0 | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 0 | 0 | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 1,436 | 1,580 | 1,436 | 1,580 | 1,470 | 1,388 | 1,814 | 1,991
Other | Consolidated Entity, excluding Affiliated Entity |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 52 |  | (104) |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 0 |  | 0 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 337 |  | 337 |  | 286 | 441 |  |
Other | Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  |  | 42 |  |  |  |  |
Issuances |  |  | 0 |  |  |  |  |
Sales |  |  | 0 |  |  |  |  |
Settlements |  |  | 0 |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 0 |  | 42 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  |  | 0 |  |  |  |  |
Transfers (out) |  |  | 0 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 0 |  | 0 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 343 |  | 343 |  | 338 | 303 |  |
Other | Variable Interest Entities |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  | 31 | 5 | 31 |  |  |  |
Issuances |  | 0 | 0 | 0 |  |  |  |
Sales |  | 0 | (7) | 0 |  |  |  |
Settlements |  | 0 | 0 | 0 |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 0 | 31 | (2) | 31 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  | 0 | 0 | 1,902 |  |  |  |
Transfers (out) |  | (1,902) | 0 | (1,902) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 0 | (1,902) | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 99 | 31 | 99 | 31 | 97 | 99 |  | 0
Other | Consolidated Entity, Excluding Variable Interest Entities (VIE) and Investments in Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases |  |  | 327 |  |  |  |  |
Issuances |  |  | 0 |  |  |  |  |
Sales |  |  | 0 |  |  |  |  |
Settlements |  |  | (431) |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) |  |  | (104) |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 |  |  | 0 |  |  |  |  |
Transfers (out) |  |  | 0 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  |  | 0 |  |  |  |  |
Other | Investments, excluding investments in Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases | 325 |  |  |  |  |  |  |
Issuances | 0 |  |  |  |  |  |  |
Sales | 0 |  |  |  |  |  |  |
Settlements | (273) |  |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 52 |  |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 | 0 |  |  |  |  |  |  |
Transfers (out) | 0 |  |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 0 |  |  |  |  |  |  |
Embedded derivatives | Funds withheld at interest | Consolidated Entity, excluding Affiliated Entity |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 0 | 0 | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 0 | 0 | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | (4,356) | (3,958) | (4,356) | (3,958) | (4,291) | (4,847) | (1,882) | 0
Embedded derivatives | Funds withheld at interest | Related Party |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements) | 0 | 0 | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | 0 | 0 | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | (1,297) | (1,129) | (1,297) | (1,129) | (1,266) | (1,425) | (570) | 0
Interest sensitive contract liabilities | Universal life |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements), Liabilities | 0 | 0 | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net | 0 | 0 | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value | 854 | 943 | 854 | 943 | 879 | 829 | 1,096 | 1,235
Interest sensitive contract liabilities | Embedded derivatives |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases | 0 | 0 | 0 | 0 |  |  |  |
Issuances | (558) | (337) | (1,135) | (597) |  |  |  |
Sales | 0 | 0 | 0 | 0 |  |  |  |
Settlements | (162) | (127) | (306) | (276) |  |  |  |
Purchases, (Sales), Issuances, (Settlements), Liabilities | (396) | (210) | (829) | (321) |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3 | 0 | 0 | 0 | 0 |  |  |  |
Transfers (out) | 0 | 0 | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net | 0 | 0 | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value | 8,198 | 5,176 | 8,198 | 5,176 | 6,747 | 5,841 | 6,485 | 7,408
Derivative Financial Instruments, Liabilities |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements), Liabilities | 0 | 0 | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net | 0 | 0 | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 3
Future policy benefits | AmerUs Closed Block |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements), Liabilities | 0 | 0 | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net | 0 | 0 | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value | 1,159 | 1,247 | 1,159 | 1,247 | 1,190 | 1,164 | 1,378 | 1,520
Future policy benefits | ILICO Closed Block and life benefits |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements), Liabilities | 0 | 0 | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net | 0 | 0 | 0 | 0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value | 571 | $ 623 | 571 | $ 623 | 579 | 548 | $ 704 | $ 742
Other liabilities |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |  |
Purchases, (Sales), Issuances, (Settlements), Liabilities | 0 |  | 0 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net | 0 |  | 0 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value | $ 209 |  | $ 209 |  | $ 189 | $ 142 |  |

X
- Definition [Line Items] for Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] + References No definition available. + Details
Name: | ahl_FairValueAssetsandLiabilitiesMeasuredonRecurringBasisUnobservableInputReconciliationLineItems
Namespace Prefix: | ahl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of transfers of financial instrument classified as a liability into level 3 of the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersIntoLevel3
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of transfers of financial instrument classified as a liability out of level 3 of the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of issuances of financial instrument classified as an asset 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
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of purchases of financial instrument classified as an asset 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
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of purchases, (sales), issuances and (settlements) of financial instrument classified as an asset 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
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesSalesIssuancesSettlements
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of sale of financial instrument classified as an asset 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
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of settlement of financial instrument classified as an asset 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
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of transfer of financial instrument classified as an asset into level 3 of the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy. + References No definition available. + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of transfers of financial instrument classified as an asset out of level 3 of the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value of financial instrument classified as an asset 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 -Section 50 -Paragraph 2 -Subparagraph (c) -SubTopic 10 -Topic 820 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of issuances 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
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- 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
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of purchases, (sales), issuances and (settlements) 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
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchasesSalesIssuancesSettlements
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of sales 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
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of settlements 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
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransfersNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value 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 -Section 50 -Paragraph 2 -Subparagraph (c) -SubTopic 10 -Topic 820 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_InvestmentTypeAxis=ahl_DebtSecuritiesTradingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=ahl_ConsolidatedEntityExcludingAffiliatedEntityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=srt_AffiliatedEntityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=ahl_ConsolidatedEntityExcludingVariableInterestEntitiesVIEandInvestmentsinRelatedPartyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=ahl_InvestmentsExcludingInvestmentsInRelatedPartyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=ahl_InvestmentFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_OtherInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_ForeignGovernmentDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_AvailableforsaleSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_DebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CollateralizedDebtObligationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_ResidentialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_AssetBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CommercialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_ForeignGovernmentDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_LoansReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_ShortTermInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_ReinsuranceRecoverableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_OtherInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_EmbeddedDerivativeFinancialInstrumentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=ahl_FundsWithheldatInterestMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=ahl_InterestSensitiveContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_UniversalLifeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=ahl_FuturePolicyBenefitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=ahl_AmerUsClosedBlockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=ahl_IndianapolisLifeInsuranceCompanyClosedBlockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=us-gaap_OtherLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |