SEGMENT INFORMATION - Schedule of Changes in Carrying Amount of Goodwill (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($)
Goodwill [Roll Forward]
Balance at beginning of period	$ 332.1
Foreign currency translation adjustment	(4.1)
Balance at end of period	328.0
Office Segment
Goodwill [Roll Forward]
Balance at beginning of period	54.3
Foreign currency translation adjustment	(0.6)
Balance at end of period	53.7
Lifestyle Segment
Goodwill [Roll Forward]
Balance at beginning of period	277.8
Foreign currency translation adjustment	(3.5)
Balance at end of period	$ 274.3