SEGMENT REPORTING - Financial Information Concerning Company's Reportable Segments (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Revenues	$ 648.9	$ 636.4	$ 1,989.6	$ 2,019.6
Adjusted Income from Operations	72.5	101.0	288.2	280.1
North America
Segment Reporting Information [Line Items]
Revenues	523.9	517.1	1,600.2	1,663.0
Adjusted Income from Operations	132.7	157.0	449.9	447.0
International
Segment Reporting Information [Line Items]
Revenues	125.0	119.3	389.4	356.6
Adjusted Income from Operations	15.1	15.4	43.3	32.3
Other Costs
Segment Reporting Information [Line Items]
Adjusted Income from Operations	$ (75.3)	$ (71.4)	$ (205.0)	$ (199.2)