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INVESTMENTS IN UNCONSOLIDATED SUBSIDIARIES AND AFFILIATES (Tables)
6 Months Ended
Jun. 30, 2019
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 June 30, 2019 and December 31, 2018 is as follows:
 
June 30, 2019
 
December 31, 2018
 
(in millions)
Equity method
$
520

 
$
523

Cost method
3

 
3

Total
$
523

 
$
526