SHAREHOLDERS' INTEREST - Additional Information (Details) - USD ($)	3 Months Ended		12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Sep. 22, 2021
Class Of Stock [Line Items]
Shares repurchased during period			2,730,000	0	2,349,000
Shares repurchased during period value			$ 100,000,000	$ 0	$ 60,000,000
Unsettled share repurchases	$ 0		0	$ 0
2021 Repurchase Program
Class Of Stock [Line Items]
Stock repurchase program, authorized amount						$ 1,000,000,000
Shares repurchased during period	1,949,496	780,228
Shares repurchased during period value	$ 74,000,000	$ 26,000,000
Stock repurchase program, remaining authorized repurchase amount	$ 927,000,000		$ 927,000,000
2019 Repurchase Program
Class Of Stock [Line Items]
Shares repurchased during period				0	2,300,000
Shares repurchased during period value					$ 60,000,000
Stock repurchase program, remaining authorized repurchase amount					$ 440,000,000
Preferred shares
Class Of Stock [Line Items]
Preferred shares, outstanding	0		0	0
Preferred shares, authorized	7,000,000		7,000,000	40,000,000
Preferred shares, par value	$ 1.00		$ 1.00	$ 1.00