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INVESTMENTS - Gross Proceeds from AFS debt securities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Gross proceeds from sales	$ 162	$ 93	$ 76
Gross proceeds from maturities	187	131	83
Total	$ 349	$ 224	$ 159

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Amount of cash inflow from maturity, prepayment and call of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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