INCOME PER COMMON SHARE - Schedule of Earnings Per Share. Basic and Diluted (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Numerator (basic and diluted):
Net income	$ 233	$ 94
Less: Allocation to redeemable noncontrolling interest	(1)	6
Less: Allocation to unvested restricted stock awards	0	0
Net income attributable to common shareholders	$ 234	$ 88
Denominator:
Basic common shares (based upon weighted average) (in shares)	239	256
Add: Stock option dilution (in shares)	2	1
Diluted common shares (in shares)	241	257