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INVESTMENTS IN UNCONSOLIDATED SUBSIDIARIES AND AFFILIATES (Tables)
 3 Months Ended
Mar. 31, 2021
Equity Method Investments and Joint Ventures [Abstract]  
Summary of Investments in Unconsolidated Subsidiaries and Affiliates
A summary of investments in unconsolidated subsidiaries and affiliates as of March 31, 2021 and December 31, 2020 is as follows:
March 31, 2021December 31, 2020
(in millions)
Equity method$480 $514 
Cost method19 15 
Total$499 $529