EQUITY - Summary of Changes In Equity (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	43.9
Beginning balance	$ 182	$ 2,112
Stock-based employee compensation	2
Net transfers from Parent		82
Comprehensive income (loss)	$ 147	(95)
Ending balance (in shares)	44.1
Ending balance	$ 331	2,099
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	44.0
Beginning balance	$ 44
Ending balance (in shares)	44.0
Ending balance	$ 44
Paid-In Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	4
Stock-based employee compensation	4
Ending balance	8
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	1,935
Comprehensive income (loss)	26
Ending balance	1,961
Parent Company Investment
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance		3,592
Net transfers from Parent		82
Comprehensive income (loss)		62
Ending balance		3,736
Accumulated  Other Comprehensive Loss
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(1,801)	(1,480)
Stock-based employee compensation	0
Net transfers from Parent		0
Comprehensive income (loss)	121	(157)
Ending balance	(1,680)	$ (1,637)
Common Stock Held In Treasury, At Cost
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	0
Stock-based employee compensation	(2)
Ending balance	$ (2)