Goodwill and Intangible Assets - Goodwill and Changes in Carrying Amount of Goodwill by Operating Segment (Details) $ in Millions	6 Months Ended
Jun. 30, 2020 USD ($)
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 685.7
Currency translation	(0.5)
Goodwill, Ending Balance	685.2
Specialty Engineered Materials
Goodwill [Roll Forward]
Goodwill, Beginning Balance	236.3
Currency translation	(0.7)
Goodwill, Ending Balance	235.6
Color, Additives and Inks
Goodwill [Roll Forward]
Goodwill, Beginning Balance	447.8
Currency translation	0.2
Goodwill, Ending Balance	448.0
Distribution
Goodwill [Roll Forward]
Goodwill, Beginning Balance	1.6
Currency translation	0.0
Goodwill, Ending Balance	$ 1.6

Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e961-128460

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

Name:	us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration