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INVESTMENTS - Equity Securities (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Equity Securities, FV-NI [Line Items] |  |
Fair Value | $ 802 | $ 987
Yen-denominated |  |
Equity Securities, FV-NI [Line Items] |  |
Fair Value | 658 | 641
Dollar-denominated |  |
Equity Securities, FV-NI [Line Items] |  |
Fair Value | $ 144 | $ 346

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- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=99377092&loc=SL75136599-209740 + Details
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