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INVESTMENTS - Other Investments (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Investment [Line Items] |  |  |
Other investments |  | $ 1,477 | $ 787
Policy loans |  |  |
Investment [Line Items] |  |  |
Other investments |  | 250 | 232
Short-term investments |  |  |
Investment [Line Items] |  |  |
Other investments | [1] | 628 | 152
Limited partnerships |  |  |
Investment [Line Items] |  |  |
Other investments |  | 569 | 377
Other Investments |  |  |
Investment [Line Items] |  |  |
Other investments |  | $ 30 | $ 26
[1] | Includes securities lending collateral

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