Goodwill And Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Changes in Carrying Amount of Goodwill by Operating Segment

Goodwill as of March 31, 2016 and December 31, 2015, and changes in the carrying amount of goodwill by segment were as follows:

(In millions)	Specialty Engineered Materials			Color, Additives and Inks			Designed Structures and Solutions		Performance Products  and Solutions		PolyOne Distribution		Total
Balance December 31, 2014	$	99.4		$	333.7		$	144.7	$	11.2	$	1.6	$	590.6
Acquisitions of businesses	—			8.6			—		—		—		8.6
Currency translation and other adjustments	(1.4		)	(0.1		)	—		—		—		(1.5		)
Balance December 31, 2015	$	98.0		$	342.2		$	144.7	$	11.2	$	1.6	$	597.7
Acquisitions of businesses	36.9			—			—		—		—		36.9
Currency translation and other adjustments	0.2			—			—		—		—		0.2
Balance March 31, 2016	$	135.1		$	342.2		$	144.7	$	11.2	$	1.6	$	634.8

Schedule of Finite-Lived Intangible Assets

Indefinite and finite-lived intangible assets consisted of the following:

	As of March 31, 2016
(In millions)	Acquisition Cost		Accumulated Amortization			Currency Translation			Net
Customer relationships	$	202.0	$	(44.6	)	$	—		$	157.4
Patents, technology and other	148.2		(48.6		)	(0.2		)	99.4
Indefinite-lived trade names	96.3		—			—			96.3
Total	$	446.5	$	(93.2	)	$	(0.2	)	$	353.1

	As of December 31, 2015
(In millions)	Acquisition Cost		Accumulated Amortization			Currency Translation			Net
Customer relationships	$	199.4	$	(42.1	)	$	—		$	157.3
Patents, technology and other	137.0		(45.7		)	(0.3		)	91.0
Indefinite-lived trade names	96.3		—			—			96.3
Total	$	432.7	$	(87.8	)	$	(0.3	)	$	344.6

Schedule of Indefinite-Lived Intangible Assets

Indefinite and finite-lived intangible assets consisted of the following:

	As of March 31, 2016
(In millions)	Acquisition Cost		Accumulated Amortization			Currency Translation			Net
Customer relationships	$	202.0	$	(44.6	)	$	—		$	157.4
Patents, technology and other	148.2		(48.6		)	(0.2		)	99.4
Indefinite-lived trade names	96.3		—			—			96.3
Total	$	446.5	$	(93.2	)	$	(0.2	)	$	353.1

	As of December 31, 2015
(In millions)	Acquisition Cost		Accumulated Amortization			Currency Translation			Net
Customer relationships	$	199.4	$	(42.1	)	$	—		$	157.3
Patents, technology and other	137.0		(45.7		)	(0.3		)	91.0
Indefinite-lived trade names	96.3		—			—			96.3
Total	$	432.7	$	(87.8	)	$	(0.3	)	$	344.6