FAIR VALUE MEASUREMENTS (Schedule of Maturities on Debt Securities) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Total maturities of fixed-income securities	$ 4,366	$ 4,581
Fixed-income securities
Debt Securities, Available-for-sale [Line Items]
Less than 1 year	8
1–5 years	611
5–10 years	458
More than 10 years	889
Total maturities of fixed-income securities	$ 1,966	$ 2,024

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