INVESTMENTS IN UNCONSOLIDATED SUBSIDIARIES AND AFFILIATES - Summary of Investments in Unconsolidated Subsidiaries and Affiliates (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Equity Method Investments and Joint Ventures [Abstract]
Equity method	$ 534	$ 514
Cost method	44	15
Total	$ 578	$ 529

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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- References

No definition available.

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Amount of investment in equity security without readily determinable fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
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- Definition

Amount of investment in equity method investee and investment in and advance to affiliate.

+ References

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-SubTopic 10
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