OTHER ASSETS (Tables)

12 Months Ended

Dec. 31, 2020

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule of other assets

Other assets as of December 31, 2020 and 2019 consisted of the following (in millions):

	2020		2019
Equity method investments	$	451	$	459
Other investments	450		52
Post-retirement plan assets	44		38
Other	113		69
Total other assets	$	1,058	$	618

Equity Method Investments

As described under Principles of Consolidation within Note 1. Nature of Operations and Summary of Significant Accounting Policies, we record our proportionate share of net income generated by equity method investees in loss from equity method investments in our consolidated statements of operations. The summarized results of operations and financial position of the investments accounted for under the equity method are as follows (in millions):

	For the Years Ended December 31,
	2020		2019		2018
Revenues, net	$	611	$	386	$	145
Operating income (loss)	$	147	$	47	$	(58)
Net income (loss)	$	23	$	13	$	(82)

	As of December 31,
	2020		2019
Current assets	$	493	$	369
Noncurrent assets	$	4,219	$	4,056
Current liabilities	$	410	$	118
Noncurrent liabilities	$	2,327	$	2,313