Summary of Significant Accounting Policies - Adjusted Balance Sheet to Apply Adopted Guidance (Details) - USD ($) |
Dec. 31, 2022 |
Dec. 31, 2021 |
Jan. 01, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
||||
|---|---|---|---|---|---|---|---|---|---|
| Assets: | |||||||||
| Reinsurance assets, net of allowance for credit losses and disputes | $ 2,517,000,000 | $ 3,101,000,000 | $ 3,140,000,000 | $ 3,155,000,000 | |||||
| Deferred income taxes | 8,831,000,000 | 4,796,000,000 | 3,950,000,000 | ||||||
| Deferred policy acquisition costs and value of business acquired | 10,563,000,000 | 10,598,000,000 | 10,500,000,000 | ||||||
| Market risk benefit assets, at fair value | 796,000,000 | 610,000,000 | 338,000,000 | 338,000,000 | |||||
| Other assets | 2,521,000,000 | [1] | 3,614,000,000 | [1] | 3,824,000,000 | ||||
| Total assets | 360,322,000,000 | 425,431,000,000 | 422,435,000,000 | ||||||
| Liabilities: | |||||||||
| Future policy benefits for life and accident and health insurance contracts | 50,518,000,000 | 64,270,000,000 | 65,182,000,000 | ||||||
| Policyholder contract deposits | 156,058,000,000 | 151,545,000,000 | 148,421,000,000 | 148,421,000,000 | |||||
| Market risk benefit liabilities, at fair value | 4,736,000,000 | 7,499,000,000 | 8,739,000,000 | ||||||
| Other policyholder funds | 2,885,000,000 | 2,879,000,000 | 2,740,000,000 | ||||||
| Total liabilities | 350,003,000,000 | 396,359,000,000 | 383,760,000,000 | ||||||
| Shareholders’ net investment(h) | 18,207,000,000 | 10,937,000,000 | 23,771,000,000 | ||||||
| Accumulated other comprehensive income (loss) | (16,863,000,000) | 8,233,000,000 | 12,304,000,000 | ||||||
| Total Corebridge Shareholders' equity | 9,380,000,000 | 27,230,000,000 | 36,075,000,000 | ||||||
| Total equity | 10,319,000,000 | 28,989,000,000 | 38,624,000,000 | 39,781,000,000 | $ 33,679,000,000 | ||||
| Total liabilities, redeemable noncontrolling interest and equity | 360,322,000,000 | 425,431,000,000 | 422,435,000,000 | ||||||
| Cumulative effect of change in accounting principle | |||||||||
| Liabilities: | |||||||||
| Shareholders’ net investment(h) | 158,000,000 | ||||||||
| Total equity | (1,157,000,000) | $ (246,000,000) | |||||||
| As Previously Reported | |||||||||
| Assets: | |||||||||
| Reinsurance assets, net of allowance for credit losses and disputes | 2,980,000,000 | 2,932,000,000 | 2,707,000,000 | 2,722,000,000 | |||||
| Deferred income taxes | 9,162,000,000 | 4,837,000,000 | 3,640,000,000 | ||||||
| Deferred policy acquisition costs and value of business acquired | 13,179,000,000 | 8,058,000,000 | 7,363,000,000 | ||||||
| Market risk benefit assets, at fair value | 0 | 0 | 0 | ||||||
| Other assets | 2,852,000,000 | 3,303,000,000 | 3,428,000,000 | ||||||
| Total assets | 364,217,000,000 | 416,212,000,000 | 410,155,000,000 | ||||||
| Liabilities: | |||||||||
| Future policy benefits for life and accident and health insurance contracts | 57,266,000,000 | 57,751,000,000 | 54,660,000,000 | ||||||
| Policyholder contract deposits | 158,966,000,000 | 156,846,000,000 | 154,892,000,000 | 154,892,000,000 | |||||
| Market risk benefit liabilities, at fair value | 0 | 0 | 0 | ||||||
| Other policyholder funds | 3,331,000,000 | 2,849,000,000 | 2,492,000,000 | ||||||
| Total liabilities | 355,068,000,000 | 387,284,000,000 | 370,323,000,000 | ||||||
| Shareholders’ net investment(h) | 16,121,000,000 | 8,859,000,000 | 22,579,000,000 | ||||||
| Accumulated other comprehensive income (loss) | (15,947,000,000) | 10,167,000,000 | 14,653,000,000 | ||||||
| Total Corebridge Shareholders' equity | 8,210,000,000 | 27,086,000,000 | 37,232,000,000 | ||||||
| Total equity | 9,149,000,000 | 28,845,000,000 | 39,781,000,000 | ||||||
| Total liabilities, redeemable noncontrolling interest and equity | 364,217,000,000 | 416,212,000,000 | 410,155,000,000 | ||||||
| Cumulative effect adjustments | |||||||||
| Assets: | |||||||||
| Reinsurance assets, net of allowance for credit losses and disputes | (463,000,000) | 169,000,000 | 433,000,000 | ||||||
| Deferred income taxes | (331,000,000) | (41,000,000) | 310,000,000 | ||||||
| Deferred policy acquisition costs and value of business acquired | (2,616,000,000) | 2,540,000,000 | 3,137,000,000 | ||||||
| Market risk benefit assets, at fair value | 796,000,000 | 610,000,000 | 338,000,000 | ||||||
| Other assets | (331,000,000) | 311,000,000 | 396,000,000 | ||||||
| Total assets | (3,895,000,000) | 9,219,000,000 | 12,280,000,000 | ||||||
| Liabilities: | |||||||||
| Future policy benefits for life and accident and health insurance contracts | (6,748,000,000) | 6,519,000,000 | 10,522,000,000 | ||||||
| Policyholder contract deposits | (2,908,000,000) | (5,301,000,000) | (6,471,000,000) | ||||||
| Market risk benefit liabilities, at fair value | 4,736,000,000 | 7,499,000,000 | 8,739,000,000 | ||||||
| Other policyholder funds | (446,000,000) | 30,000,000 | 248,000,000 | ||||||
| Total liabilities | (5,065,000,000) | 9,075,000,000 | 13,437,000,000 | ||||||
| Total Corebridge Shareholders' equity | 1,170,000,000 | 144,000,000 | (1,157,000,000) | ||||||
| Total equity | 1,170,000,000 | 144,000,000 | (1,157,000,000) | ||||||
| Total liabilities, redeemable noncontrolling interest and equity | (3,895,000,000) | 9,219,000,000 | 12,280,000,000 | ||||||
| Revision of Prior Period, Change in Accounting Principle, Adjustment | |||||||||
| Liabilities: | |||||||||
| Shareholders’ net investment(h) | 2,086,000,000 | 2,078,000,000 | 1,192,000,000 | ||||||
| Accumulated other comprehensive income (loss) | (916,000,000) | (1,934,000,000) | (2,349,000,000) | ||||||
| Fortitude RE | |||||||||
| Assets: | |||||||||
| Reinsurance assets, net of allowance for credit losses and disputes | 26,844,000,000 | 34,102,000,000 | 36,824,000,000 | $ 15,000,000 | |||||
| Fortitude RE | Cumulative effect of change in accounting principle | |||||||||
| Assets: | |||||||||
| Reinsurance assets, net of allowance for credit losses and disputes | 158,000,000 | ||||||||
| Fortitude RE | As Previously Reported | |||||||||
| Assets: | |||||||||
| Reinsurance assets, net of allowance for credit losses and disputes | 27,794,000,000 | 28,472,000,000 | 29,158,000,000 | ||||||
| Fortitude RE | Cumulative effect adjustments | |||||||||
| Assets: | |||||||||
| Reinsurance assets, net of allowance for credit losses and disputes | (950,000,000) | 5,630,000,000 | 7,666,000,000 | ||||||
| Excluding Fortitude | |||||||||
| Liabilities: | |||||||||
| Other liabilities | 9,076,000,000 | [1] | 10,231,000,000 | [1] | 10,353,000,000 | ||||
| Excluding Fortitude | As Previously Reported | |||||||||
| Liabilities: | |||||||||
| Other liabilities | 8,775,000,000 | 9,903,000,000 | 9,954,000,000 | ||||||
| Excluding Fortitude | Cumulative effect adjustments | |||||||||
| Liabilities: | |||||||||
| Other liabilities | $ 301,000,000 | $ 328,000,000 | $ 399,000,000 | ||||||
| |||||||||