COMMON STOCK (Details) - USD ($)	1 Months Ended									12 Months Ended
	Feb. 29, 2020	Nov. 30, 2019	Aug. 31, 2019	May 31, 2019	Feb. 28, 2019	Nov. 30, 2018	Aug. 31, 2018	May 31, 2018	Feb. 28, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Aug. 09, 2018	Sep. 06, 2016
Common Stock
Quarterly dividend declared (in dollars per share)		$ 0.20	$ 0.20	$ 0.20	$ 0.20	$ 0.20	$ 0.18	$ 0.18	$ 0.18
Dividends paid per share (in dollars per share)										$ 0.80	$ 0.74
Additional authorized repurchase amount													$ 1,000,000,000
Share repurchase program, authorized amount														$ 150,000,000
Number of shares repurchased (in shares)										5,000,000
Value of shares repurchased, gross										$ 145,000,000
Subsequent Event
Common Stock
Quarterly dividend declared (in dollars per share)	$ 0.20
Class A Common Stock
Common Stock
Quarterly dividend declared (in dollars per share)										$ 0.8	0.74	$ 0.72
Dividends paid per share (in dollars per share)										$ 0.8	$ 0.74	0.72
Total remaining authorization amount										$ 723,000,000
Class B Common Stock
Common Stock
Number of Class B shares converted into Class A Common stock (in shares)										943,002	0
Quarterly dividend declared (in dollars per share)										$ 0.8	$ 0.74	0.72
Dividends paid per share (in dollars per share)										$ 0.8	$ 0.74	$ 0.72