Fair Value of Financial Instruments - Schedule of Fair Value Hierarchy Measurements of Financial Instruments (Details) - USD ($)
|
Jun. 30, 2026 |
Mar. 31, 2026 |
Dec. 31, 2025 |
Jun. 30, 2025 |
Mar. 31, 2025 |
Dec. 31, 2024 |
| Assets |
|
|
|
|
|
|
| Equity securities: |
$ 595,000,000
|
|
$ 1,179,000,000
|
|
|
|
| Short-term investments |
484,000,000
|
|
600,000,000
|
|
|
|
| Derivative assets |
1,680,000,000
|
|
1,621,000,000
|
|
|
|
| Separate account assets |
874,000,000
|
|
822,000,000
|
|
|
|
| Liabilities |
|
|
|
|
|
|
| Market risk benefits |
4,751,000,000
|
|
4,536,000,000
|
|
|
|
| Other liabilities - derivative liabilities |
71,000,000
|
|
49,000,000
|
|
|
|
| Separate account liabilities |
874,000,000
|
$ 780,000,000
|
822,000,000
|
$ 1,322,000,000
|
$ 1,253,000,000
|
$ 1,343,000,000
|
| Real estate partnerships, equity method investments |
1,300,000,000
|
|
1,100,000,000
|
|
|
|
| Real estate, amortized cost |
1,800,000,000
|
|
|
|
|
|
| Directly held real estate |
|
|
2,800,000,000
|
|
|
|
| Investment funds, equity method investment |
3,100,000,000
|
|
2,400,000,000
|
|
|
|
| Securities purchased under agreements to resell |
0
|
|
400,000,000
|
|
|
|
| Securities purchased under agreements to resell, fair value of collateral |
|
|
872,000,000
|
|
|
|
| Other invested assets, equity method investments |
660,000,000
|
|
215,000,000
|
|
|
|
| Total Fair Value |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
61,598,000,000
|
|
57,992,000,000
|
|
|
|
| Equity securities: |
585,000,000
|
|
1,171,000,000
|
|
|
|
| Investment real estate at fair value |
1,245,000,000
|
|
1,253,000,000
|
|
|
|
| Real estate partnerships at fair value |
1,920,000,000
|
|
1,894,000,000
|
|
|
|
| Investment funds |
150,000,000
|
|
152,000,000
|
|
|
|
| Short-term investments |
484,000,000
|
|
600,000,000
|
|
|
|
| Derivative assets |
1,624,000,000
|
|
1,586,000,000
|
|
|
|
| Collaterals received on derivatives (excluding excess collateral) |
(1,554,000,000)
|
|
(1,548,000,000)
|
|
|
|
| Separately managed accounts |
49,000,000
|
|
54,000,000
|
|
|
|
| Other |
577,000,000
|
|
410,000,000
|
|
|
|
| Cash and cash equivalents |
8,416,000,000
|
|
11,660,000,000
|
|
|
|
| Reinsurance recoverables and deposit assets – market risk benefits |
604,000,000
|
|
605,000,000
|
|
|
|
| Other assets – market risk benefit assets |
1,167,000,000
|
|
1,174,000,000
|
|
|
|
| Separate account assets |
874,000,000
|
|
822,000,000
|
|
|
|
| Total assets |
77,739,000,000
|
|
77,825,000,000
|
|
|
|
| Liabilities |
|
|
|
|
|
|
| Policyholders’ account balances - embedded derivative |
6,625,000,000
|
|
6,414,000,000
|
|
|
|
| Market risk benefits |
4,751,000,000
|
|
4,536,000,000
|
|
|
|
| Funds withheld for reinsurance liabilities - embedded derivative |
20,000,000
|
|
74,000,000
|
|
|
|
| Other liabilities - derivative liabilities |
15,000,000
|
|
14,000,000
|
|
|
|
| Separate account liabilities |
874,000,000
|
|
822,000,000
|
|
|
|
| Total liabilities |
12,285,000,000
|
|
11,860,000,000
|
|
|
|
| Total Fair Value | U.S. treasury and government |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
68,000,000
|
|
68,000,000
|
|
|
|
| Total Fair Value | U.S. state and municipal |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
2,886,000,000
|
|
2,949,000,000
|
|
|
|
| Total Fair Value | Foreign governments |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
3,238,000,000
|
|
1,169,000,000
|
|
|
|
| Total Fair Value | Corporate debt securities |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
44,143,000,000
|
|
43,141,000,000
|
|
|
|
| Total Fair Value | Residential mortgage-backed securities |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
896,000,000
|
|
1,008,000,000
|
|
|
|
| Total Fair Value | Commercial mortgage-backed securities |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
2,860,000,000
|
|
3,121,000,000
|
|
|
|
| Total Fair Value | Collateralized debt securities |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
7,507,000,000
|
|
6,536,000,000
|
|
|
|
| Total Fair Value | Common stock |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Equity securities: |
144,000,000
|
|
757,000,000
|
|
|
|
| Total Fair Value | Preferred Stock |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Equity securities: |
441,000,000
|
|
414,000,000
|
|
|
|
| Level 1 |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
58,000,000
|
|
54,000,000
|
|
|
|
| Equity securities: |
58,000,000
|
|
675,000,000
|
|
|
|
| Investment real estate at fair value |
0
|
|
0
|
|
|
|
| Real estate partnerships at fair value |
0
|
|
0
|
|
|
|
| Investment funds |
0
|
|
0
|
|
|
|
| Short-term investments |
0
|
|
0
|
|
|
|
| Derivative assets |
0
|
|
0
|
|
|
|
| Collaterals received on derivatives (excluding excess collateral) |
(1,554,000,000)
|
|
(1,548,000,000)
|
|
|
|
| Separately managed accounts |
0
|
|
0
|
|
|
|
| Other |
0
|
|
0
|
|
|
|
| Cash and cash equivalents |
8,416,000,000
|
|
11,660,000,000
|
|
|
|
| Reinsurance recoverables and deposit assets – market risk benefits |
0
|
|
0
|
|
|
|
| Other assets – market risk benefit assets |
0
|
|
0
|
|
|
|
| Separate account assets |
857,000,000
|
|
804,000,000
|
|
|
|
| Total assets |
7,835,000,000
|
|
11,645,000,000
|
|
|
|
| Liabilities |
|
|
|
|
|
|
| Policyholders’ account balances - embedded derivative |
0
|
|
0
|
|
|
|
| Market risk benefits |
0
|
|
0
|
|
|
|
| Funds withheld for reinsurance liabilities - embedded derivative |
0
|
|
0
|
|
|
|
| Other liabilities - derivative liabilities |
0
|
|
0
|
|
|
|
| Separate account liabilities |
857,000,000
|
|
804,000,000
|
|
|
|
| Total liabilities |
857,000,000
|
|
804,000,000
|
|
|
|
| Level 1 | U.S. treasury and government |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
57,000,000
|
|
54,000,000
|
|
|
|
| Level 1 | U.S. state and municipal |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
0
|
|
0
|
|
|
|
| Level 1 | Foreign governments |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
0
|
|
0
|
|
|
|
| Level 1 | Corporate debt securities |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
1,000,000
|
|
0
|
|
|
|
| Level 1 | Residential mortgage-backed securities |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
0
|
|
0
|
|
|
|
| Level 1 | Commercial mortgage-backed securities |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
0
|
|
0
|
|
|
|
| Level 1 | Collateralized debt securities |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
0
|
|
0
|
|
|
|
| Level 1 | Common stock |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Equity securities: |
52,000,000
|
|
670,000,000
|
|
|
|
| Level 1 | Preferred Stock |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Equity securities: |
6,000,000
|
|
5,000,000
|
|
|
|
| Level 2 |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
54,041,000,000
|
|
52,273,000,000
|
|
|
|
| Equity securities: |
45,000,000
|
|
65,000,000
|
|
|
|
| Investment real estate at fair value |
0
|
|
0
|
|
|
|
| Real estate partnerships at fair value |
0
|
|
0
|
|
|
|
| Investment funds |
0
|
|
0
|
|
|
|
| Short-term investments |
484,000,000
|
|
379,000,000
|
|
|
|
| Derivative assets |
1,431,000,000
|
|
1,383,000,000
|
|
|
|
| Collaterals received on derivatives (excluding excess collateral) |
0
|
|
0
|
|
|
|
| Separately managed accounts |
0
|
|
0
|
|
|
|
| Other |
0
|
|
0
|
|
|
|
| Cash and cash equivalents |
0
|
|
0
|
|
|
|
| Reinsurance recoverables and deposit assets – market risk benefits |
0
|
|
0
|
|
|
|
| Other assets – market risk benefit assets |
0
|
|
0
|
|
|
|
| Separate account assets |
17,000,000
|
|
18,000,000
|
|
|
|
| Total assets |
56,018,000,000
|
|
54,118,000,000
|
|
|
|
| Liabilities |
|
|
|
|
|
|
| Policyholders’ account balances - embedded derivative |
0
|
|
0
|
|
|
|
| Market risk benefits |
0
|
|
0
|
|
|
|
| Funds withheld for reinsurance liabilities - embedded derivative |
0
|
|
0
|
|
|
|
| Other liabilities - derivative liabilities |
15,000,000
|
|
14,000,000
|
|
|
|
| Separate account liabilities |
17,000,000
|
|
18,000,000
|
|
|
|
| Total liabilities |
32,000,000
|
|
32,000,000
|
|
|
|
| Level 2 | U.S. treasury and government |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
11,000,000
|
|
14,000,000
|
|
|
|
| Level 2 | U.S. state and municipal |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
2,886,000,000
|
|
2,949,000,000
|
|
|
|
| Level 2 | Foreign governments |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
3,187,000,000
|
|
1,147,000,000
|
|
|
|
| Level 2 | Corporate debt securities |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
42,479,000,000
|
|
41,915,000,000
|
|
|
|
| Level 2 | Residential mortgage-backed securities |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
878,000,000
|
|
989,000,000
|
|
|
|
| Level 2 | Commercial mortgage-backed securities |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
2,839,000,000
|
|
3,012,000,000
|
|
|
|
| Level 2 | Collateralized debt securities |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
1,761,000,000
|
|
2,247,000,000
|
|
|
|
| Level 2 | Common stock |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Equity securities: |
2,000,000
|
|
2,000,000
|
|
|
|
| Level 2 | Preferred Stock |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Equity securities: |
43,000,000
|
|
63,000,000
|
|
|
|
| Level 3 |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
7,499,000,000
|
|
5,665,000,000
|
|
|
|
| Equity securities: |
482,000,000
|
|
431,000,000
|
|
|
|
| Investment real estate at fair value |
1,245,000,000
|
|
1,253,000,000
|
|
|
|
| Real estate partnerships at fair value |
1,920,000,000
|
|
1,894,000,000
|
|
|
|
| Investment funds |
150,000,000
|
|
152,000,000
|
|
|
|
| Short-term investments |
0
|
|
221,000,000
|
|
|
|
| Derivative assets |
193,000,000
|
|
203,000,000
|
|
|
|
| Collaterals received on derivatives (excluding excess collateral) |
0
|
|
0
|
|
|
|
| Separately managed accounts |
49,000,000
|
|
54,000,000
|
|
|
|
| Other |
577,000,000
|
|
410,000,000
|
|
|
|
| Cash and cash equivalents |
0
|
|
0
|
|
|
|
| Reinsurance recoverables and deposit assets – market risk benefits |
604,000,000
|
|
605,000,000
|
|
|
|
| Other assets – market risk benefit assets |
1,167,000,000
|
|
1,174,000,000
|
|
|
|
| Separate account assets |
0
|
|
0
|
|
|
|
| Total assets |
13,886,000,000
|
|
12,062,000,000
|
|
|
|
| Liabilities |
|
|
|
|
|
|
| Policyholders’ account balances - embedded derivative |
6,625,000,000
|
|
6,414,000,000
|
|
|
|
| Market risk benefits |
4,751,000,000
|
|
4,536,000,000
|
|
|
|
| Funds withheld for reinsurance liabilities - embedded derivative |
20,000,000
|
|
74,000,000
|
|
|
|
| Other liabilities - derivative liabilities |
0
|
|
0
|
|
|
|
| Separate account liabilities |
0
|
|
0
|
|
|
|
| Total liabilities |
11,396,000,000
|
|
11,024,000,000
|
|
|
|
| Level 3 | U.S. treasury and government |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
0
|
|
0
|
|
|
|
| Level 3 | U.S. state and municipal |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
0
|
|
0
|
|
|
|
| Level 3 | Foreign governments |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
51,000,000
|
|
22,000,000
|
|
|
|
| Level 3 | Corporate debt securities |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
1,663,000,000
|
|
1,226,000,000
|
|
|
|
| Level 3 | Residential mortgage-backed securities |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
18,000,000
|
|
19,000,000
|
|
|
|
| Level 3 | Commercial mortgage-backed securities |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
21,000,000
|
|
109,000,000
|
|
|
|
| Level 3 | Collateralized debt securities |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Total available-for-sale fixed maturity securities |
5,746,000,000
|
|
4,289,000,000
|
|
|
|
| Level 3 | Common stock |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Equity securities: |
90,000,000
|
|
85,000,000
|
|
|
|
| Level 3 | Preferred Stock |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Equity securities: |
392,000,000
|
|
346,000,000
|
|
|
|
| Fair Value Measured at Net Asset Value Per Share |
|
|
|
|
|
|
| Liabilities |
|
|
|
|
|
|
| Investments funds |
$ 330,000,000
|
|
$ 640,000,000
|
|
|
|