SEGMENT INFORMATION - Schedule of Changes in Carrying Amount of Goodwill (Details) $ in Millions	6 Months Ended
	Jun. 30, 2020 USD ($)
Goodwill [Roll Forward]
Balance at beginning of period	$ 332.1
Foreign currency translation adjustment	0.3
Balance at end of period	332.4
Office Segment
Goodwill [Roll Forward]
Balance at beginning of period	54.3
Foreign currency translation adjustment	(0.3)
Balance at end of period	54.0
Lifestyle Segment
Goodwill [Roll Forward]
Balance at beginning of period	277.8
Foreign currency translation adjustment	0.6
Balance at end of period	$ 278.4