Aggregate dividends declared during the period for each share of common stock outstanding.

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SUBSEQUENT EVENTS (Details) - $ / shares			12 Months Ended
SUBSEQUENT EVENTS (Details) - $ / shares	Feb. 19, 2020	Feb. 11, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Subsequent Events
Dividends (in dollars per share)			$ 1.34	$ 1.16	$ 1.04
Performance-Based Restricted Stock Units
Subsequent Events
Granted (in shares)			86,134
Granted (in dollars per share)			$ 88.22
Vesting period			3 years
Subsequent Event
Subsequent Events
Dividends (in dollars per share)		$ 0.36
Subsequent Event \| Restricted Stock Units
Subsequent Events
Granted (in shares)	163,261
Granted (in dollars per share)	$ 120.44
Vesting period	3 years
Subsequent Event \| Performance-Based Restricted Stock Units
Subsequent Events
Granted (in shares)	42,173