NET EARNINGS PER COMMON SHARE - Basic and Diluted Net Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Basic:
Net income	$ 214	$ 175	$ 568	$ 554
Less common and preferred dividends	71	68	215	206
Undistributed earnings	143	107	353	348
Less undistributed earnings applicable to nonvested shares	2	1	4	3
Undistributed earnings applicable to common shares	141	106	349	345
Distributed earnings applicable to common shares	61	61	182	182
Total earnings applicable to common shares	$ 202	$ 167	$ 531	$ 527
Weighted average common shares outstanding (in shares)	147,138	147,648	147,197	147,784
Net earnings per common share (in dollars per share)	$ 1.37	$ 1.13	$ 3.61	$ 3.57
Diluted:
Total earnings applicable to common shares	$ 202	$ 167	$ 531	$ 527
Dilutive effect of stock options (in shares)	12	5	5	10
Weighted average common shares outstanding (in shares)	147,138	147,648	147,197	147,784
Weighted average diluted common shares outstanding (in shares)	147,150	147,653	147,202	147,794
Net earnings per common share (in dollars per share)	$ 1.37	$ 1.13	$ 3.61	$ 3.57