EARNINGS PER COMMON SHARE - Computation of Earnings Per Common Share (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share [Abstract]
Net income	$ 47	$ 94
Less: Preferred stock dividends	2	2
Net Income Available to Common Stockholders	$ 45	$ 92
Basic weighted average common shares outstanding (in shares)	324,247,710	324,640,715
Net effect of dilutive stock options, warrants and restricted stock (in shares)	1,797,472	1,188,119
Diluted weighted average common shares outstanding (in shares)	326,045,182	325,828,834
Earnings per common share:
Basic (in USD per share)	$ 0.14	$ 0.28
Diluted (in USD per share)	$ 0.14	$ 0.28

Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).

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