Total Equity

Total equity is composed of the following (in millions, except per share amounts):



	March 31, 2018			December 31, 2017
Common stock, $.01 par value:
Common Stock – authorized 200.0 shares; issued and outstanding 54.8 and 54.9 shares	$	0.6		$	0.6
Additional paid-in capital	10.2			11.0
Retained earnings	1,908.9			1,892.4
Accumulated other comprehensive loss:
Pension and post retirement benefit plan adjustment, net of tax	(174.5		)	(176.5		)
Cumulative translation adjustment	(82.1		)	(91.9		)
Unrealized gain (loss) on investment, net of tax	(0.9		)	(0.6		)
Cash flow hedge gain (loss), net of tax	(0.2		)	(0.8		)
Total Accumulated other comprehensive loss	(257.7		)	(269.8		)
Hubbell shareholders’ equity	1,662.0			1,634.2
Noncontrolling interest	16.5			13.7
TOTAL EQUITY	$	1,678.5		$	1,647.9

A summary of the changes in equity for the three months ended March 31, 2018 and 2017 is provided below (in millions):



	Three Months Ended March 31,
	2018									2017
	Hubbell Shareholders’ Equity			Noncontrolling interest			Total Equity			Hubbell Shareholders’ Equity			Noncontrolling interest			Total Equity
EQUITY, JANUARY 1	$	1,634.2		$	13.7		$	1,647.9		$	1,592.8		$	10.4		$	1,603.2
Total comprehensive income	70.4			1.5			71.9			76.3			1.1			77.4
Stock-based compensation	5.1			—			5.1			4.2			—			4.2
ASC 606 adoption to retained earnings	0.6			—			0.6			—			—			—
Repurchase/surrender of shares of common stock	(6.1		)	—			(6.1		)	(55.9		)	—			(55.9		)
Issuance of shares related to directors’ deferred compensation, net	0.1			—			0.1			0.1			—			0.1
Dividends to noncontrolling interest	—			(1.1		)	(1.1		)	—			(1.4		)	(1.4		)
Aclara noncontrolling interest	—			2.4			2.4			—			—			—
Cash dividends declared	(42.3		)	—			(42.3		)	(38.8		)	—			(38.8		)
EQUITY, MARCH 31	$	1,662.0		$	16.5		$	1,678.5		$	1,578.7		$	10.1		$	1,588.8

The detailed components of total comprehensive income are presented in the Condensed Consolidated Statement of Comprehensive Income.