Goodwill And Intangible Assets (Goodwill By Operating Segment) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill [Roll Forward]
Goodwill, gross at January 1, 2012			$ 598.8
Goodwill, Impairment Loss			(203.3)
Balance, beginning of period	405.5	395.5
Acquisitions of businesses	154.1	10.6
Currency translation and other adjustments	(0.6)	(0.6)
Balance, end of period	559.0	405.5	395.5
Global Specialty Engineered Materials
Goodwill [Roll Forward]
Goodwill, gross at January 1, 2012			101.4
Goodwill, Impairment Loss			(12.2)
Balance, beginning of period	98.6	89.2
Acquisitions of businesses	1.8	10.0
Currency translation and other adjustments	(0.5)	(0.6)
Balance, end of period	99.9	98.6	89.2
Global Color, Additives and Inks
Goodwill [Roll Forward]
Goodwill, gross at January 1, 2012			313.4
Goodwill, Impairment Loss			(16.1)
Balance, beginning of period	297.9	297.3
Acquisitions of businesses	12.4	0.6
Currency translation and other adjustments	(0.1)	0
Balance, end of period	310.2	297.9	297.3
Designed Structures and Solutions [Member]
Goodwill [Roll Forward]
Goodwill, gross at January 1, 2012			0
Goodwill, Impairment Loss			0
Balance, beginning of period	0	0
Acquisitions of businesses	136.3	0
Currency translation and other adjustments	0	0
Balance, end of period	136.3	0	0
Performance Products and Solutions
Goodwill [Roll Forward]
Goodwill, gross at January 1, 2012			182.4
Goodwill, Impairment Loss			(175.0)
Balance, beginning of period	7.4	7.4
Acquisitions of businesses	3.6	0
Currency translation and other adjustments	0	0
Balance, end of period	11.0	7.4	7.4
PolyOne Distribution
Goodwill [Roll Forward]
Goodwill, gross at January 1, 2012			1.6
Goodwill, Impairment Loss			0
Balance, beginning of period	1.6	1.6
Acquisitions of businesses	0	0
Currency translation and other adjustments	0	0
Balance, end of period	$ 1.6	$ 1.6	$ 1.6