SEGMENT INFORMATION - Segment Information with Corporate Costs Excluded (Details) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) segment	Sep. 30, 2018 USD ($)
Financial information of segments
Number of reportable segments \| segment			2
SALES	$ 356.5	$ 327.7	$ 1,056.6	$ 947.6
OPERATING PROFIT	36.7	32.9	99.8	80.2
Operating Segments
Financial information of segments
SALES	356.5	327.7	1,056.6	947.6
INTERSEGMENT SALES	2.8	3.0	8.7	9.4
Corporate
Financial information of segments
OPERATING PROFIT	(6.6)	(5.3)	(18.3)	(18.3)
Acquisition costs	0.3	0.1	0.0	1.6
Office
Financial information of segments
SALES	219.1	200.6	644.5	580.3
Restructuring charges	0.1	1.2	0.2	2.6
Office \| Operating Segments
Financial information of segments
SALES	219.1	200.6	644.5	580.3
INTERSEGMENT SALES	0.6	0.4	1.5	1.4
OPERATING PROFIT	18.3	15.5	46.8	34.7
Lifestyle
Financial information of segments
SALES	137.4	127.1	412.1	367.3
Lifestyle \| Operating Segments
Financial information of segments
SALES	137.4	127.1	412.1	367.3
INTERSEGMENT SALES	2.2	2.6	7.2	8.0
OPERATING PROFIT	$ 25.0	$ 22.7	$ 71.3	$ 63.8

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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