EQUITY METHOD INTERESTS - Summary of Combined Statement of Operations Equity Method Interests (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Equity Method Investments and Joint Ventures [Abstract]
Operating revenues	$ 176	$ 12
Operating expenses	90	8
Operating income	86	4
Net income	77	0
Other comprehensive loss	$ (8)	$ 0

Equity Method Investment, Other Comprehensive Loss

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- Definition

Equity Method Investment, Summarized Financial Information, Expense

+ References

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Equity Method Investment, Summarized Financial Information, Operating Income (Loss)

+ References

No definition available.

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- Definition

The amount of net income (loss) reported by an equity method investment of the entity.

+ References

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Amount of revenue from sale of product and rendering of service reported by equity method investee.

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- References

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