STOCKHOLDERS'/OWNERS' EQUITY (Equity Shelf Program) (Narrative) (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		12 Months Ended
	Sep. 03, 2015	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Issuance of common stock (in shares)				1.2
$500 Million Equity Shelf Program
Sales price, equity distribution agreement	$ 500.0
Compensation percentage for sale of shares	2.00%
Issuance of common stock (in shares)		3.1	2.3	0.7
Issuance of common stock, average price per share		$ 34.79	$ 33.18	$ 30.81
Proceeds from issuance of common stock		$ 109.0	$ 75.5	$ 22.1