EMPLOYEE BENEFIT PLANS - Investments Measured at NAV (Details) - NAV - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Investments measured at NAV
Fair value of investment measured at NAV	$ 12,438	$ 11,417
Hedge funds and hedge fund-related strategies
Investments measured at NAV
Fair value of investment measured at NAV	$ 6,519	$ 6,175
Hedge funds and hedge fund-related strategies \| Minimum
Investments measured at NAV
Redemption notice period	15 days	7 days
Hedge funds and hedge fund-related strategies \| Maximum
Investments measured at NAV
Redemption notice period	180 days	180 days
Commingled funds, private equity and private equity-related instruments
Investments measured at NAV
Fair value of investment measured at NAV	$ 2,351	$ 2,279
Unfunded commitments	$ 1,300
Commingled funds, private equity and private equity-related instruments \| Minimum
Investments measured at NAV
Redemption notice period	2 days	2 days
Commingled funds, private equity and private equity-related instruments \| Maximum
Investments measured at NAV
Redemption notice period	45 days	45 days
Fixed income and fixed income-related instruments
Investments measured at NAV
Fair value of investment measured at NAV	$ 1,427	$ 1,147
Unfunded commitments	$ 287
Fixed income and fixed income-related instruments \| Minimum
Investments measured at NAV
Redemption notice period	1 day	1 day
Fixed income and fixed income-related instruments \| Maximum
Investments measured at NAV
Redemption notice period	180 days	180 days
Real assets
Investments measured at NAV
Fair value of investment measured at NAV	$ 979	$ 893
Unfunded commitments	618
Balanced allocation
Investments measured at NAV
Fair value of investment measured at NAV	$ 349	$ 100
Redemption notice period	0 days	0 days
Other
Investments measured at NAV
Fair value of investment measured at NAV	$ 813	$ 823
Other \| Minimum
Investments measured at NAV
Redemption notice period	2 days	2 days
Other \| Maximum
Investments measured at NAV
Redemption notice period	10 days	10 days

Fair value of investment other than investment in equity security, investment in debt security and equity method investment. Includes, but is not limited to, investment in certain entities that calculate net asset value per share. Example includes, but is not limited to, investment in hedge fund, venture capital fund, private equity fund, and real estate partnership or fund.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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