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BUSINESS SEGMENT INFORMATION - Reconciliation of Assets from Segment to Consolidated (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Segment Reporting Information [Line Items] |  |
Total assets | $ 252,702 | $ 295,688
Operating Segments | Individual Retirement |  |
Segment Reporting Information [Line Items] |  |
Total assets | 77,641 | 78,598
Operating Segments | Group Retirement |  |
Segment Reporting Information [Line Items] |  |
Total assets | 42,421 | 57,458
Operating Segments | Investment Management and Research |  |
Segment Reporting Information [Line Items] |  |
Total assets | 12,633 | 11,986
Operating Segments | Protection Solutions |  |
Segment Reporting Information [Line Items] |  |
Total assets | 37,224 | 50,089
Operating Segments | Wealth Management |  |
Segment Reporting Information [Line Items] |  |
Total assets | 137 | 140
Operating Segments | Legacy |  |
Segment Reporting Information [Line Items] |  |
Total assets | 48,231 | 64,578
Corporate and Other |  |
Segment Reporting Information [Line Items] |  |
Total assets | $ 34,415 | $ 32,839

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