Equity (Tables)

6 Months Ended

Jun. 30, 2016

Equity [Abstract]

Schedule of Changes in Equity

Changes in equity for the six months ended June 30, 2016 and June 30, 2015 are as follows:

(In millions)	PolyOne Shareholders' Equity			Noncontrolling Interests			Total Equity
Balance at December 31, 2015	$	704.2		$	1.0		$	705.2
Net income (loss)	89.1			(0.1		)	89.0
Other comprehensive income
Translation adjustments	(4.3		)	—			(4.3		)
Total comprehensive income (loss)	84.8			(0.1		)	84.7
Cash dividend declared	(19.7		)	—			(19.7		)
Repurchase of common shares	(39.6		)	—			(39.6		)
Share-based incentive plan activity	1.2			—			1.2
Balance at June 30, 2016	$	730.9		$	0.9		$	731.8
Balance at December 31, 2014	$	776.3		$	0.9		$	777.2
Net income	97.0			0.2			97.2
Other comprehensive income
Translation adjustments	(14.6		)	—			(14.6		)
Unrecognized gain on available-for-sale securities	0.4			—			0.4
Total comprehensive income	82.8			0.2			83.0
Cash dividend declared	(17.8		)	—			(17.8		)
Repurchase of common shares	(42.8		)	—			(42.8		)
Share-based incentive plan activity	0.3			—			0.3
Balance at June 30, 2015	$	798.8		$	1.1		$	799.9

Schedule of Accumulated Other Comprehensive Loss

Changes in accumulated other comprehensive loss year-to-date as of June 30, 2016 and 2015 were as follows:

(In millions)	Cumulative Translation Adjustment			Pension and Other Post-Retirement Benefits		Unrealized Gain in Available-for-Sale Securities		Total
Balance at January 1, 2016	$	(76.8	)	$	5.2	$	0.3	$	(71.3	)
Translation adjustments	(4.3		)	—		—		(4.3		)
Balance at June 30, 2016	$	(81.1	)	$	5.2	$	0.3	$	(75.6	)
Balance at January 1, 2015	$	(47.7	)	$	5.2	$	0.2	$	(42.3	)
Translation adjustments	(14.6		)	—		—		(14.6		)
Unrecognized gain on available-for-sale securities	—			—		0.4		0.4
Balance at June 30, 2015	$	(62.3	)	$	5.2	$	0.6	$	(56.5	)