FAIR VALUE MEASUREMENTS - Estimated Fair Value of Company'S Debt Obligations, Using Level 2 Inputs, Compared to Carrying Amount (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Carrying value of debt obligations	$ 2,676.6	$ 2,778.7
Level 2 Inputs [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Fair value of debt obligations	2,730.0	2,750.0
Carrying value of debt obligations	$ 2,680.0	$ 2,780.0