FAIR VALUE MEASUREMENTS (Tables)

12 Months Ended

Dec. 31, 2018

Fair Value Disclosures [Abstract]

Assets and liabilities measured at fair value on a recurring basis

The following tables provide fair value measurement information for assets and liabilities that are measured on a recurring basis:

(in millions)	Fair Value Measurements at December 31, 2018, Using							Netting and Collateral		Total Fair Value
Description		Level 1		Level 2		Level 3
Liabilities:
Embedded derivative	Accrued liabilities	$	—	$	66	$	—	$	—	$	66
	Deferred credits and liabilities	$	—	$	116	$	—	$	—	$	116

(in millions)	Fair Value Measurements at December 31, 2017, Using							Netting and Collateral		Total Fair Value
Description		Level 1		Level 2		Level 3
Liabilities:
Embedded derivative	Accrued liabilities	$	—	$	39	$	—	$	—	$	39
	Deferred credits and liabilities	$	—	$	147	$	—	$	—	$	147