SEGMENT REPORTING - Financial Information Concerning Company's Reportable Segments (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
Revenues	$ 672.7	$ 598.2	$ 1,340.7	$ 1,383.2
Adjusted Income from Operations	105.7	85.3	215.7	179.1
North America
Segment Reporting Information [Line Items]
Revenues	542.6	491.3	1,076.3	1,145.9
Adjusted Income from Operations	159.6	140.5	317.2	290.0
International
Segment Reporting Information [Line Items]
Revenues	130.1	106.9	264.4	237.3
Adjusted Income from Operations	15.6	1.8	28.2	16.9
Other Costs
Segment Reporting Information [Line Items]
Adjusted Income from Operations	$ (69.5)	$ (57.0)	$ (129.7)	$ (127.8)