Shareholders' Equity and Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2011

Shareholders' Equity and Stock-Based Compensation

Computations of the components used for the calculation of basic and diluted earnings per share

	Year Ended December 31,
	2011		2010			2009
Numerator:
Income from continuing operations	$	185.3	$	191.6		$	49.0
Less: Net income (loss) attributable to noncontrolling interests		5.0		(2.8	)		1.8
Income from continuing operations attributable to SPX Corporation common shareholders for calculating basic and diluted earnings per share	$	180.3	$	194.4		$	47.2
Income (loss) from discontinued operations	$	0.3	$	11.2		$	(32.8	)
Less: Net loss attributable to noncontrolling interest		—		—			(17.3	)
Income (loss) from discontinued operations attributable to SPX Corporation common shareholders for calculating basic and diluted earnings per share	$	0.3	$	11.2		$	(15.5	)
Denominator:
Weighted-average number of common shares used in basic earnings per share		50.499		49.718			49.363
Dilutive Securities — Employee stock options and restricted stock units		0.447		0.629			0.434
Weighted-average number of common shares and dilutive securities used in diluted earnings per share		50.946		50.347			49.797

Schedule of components of the balance sheet caption, accumulated other comprehensive loss

	December 31, 2011			December 31, 2010
Foreign currency translation adjustment	$	199.7		$	223.2
Net unrealized losses on qualifying cash flow hedges, net of tax benefit of $2.9 and $2.2, respectively		(4.4	)		(3.3	)
Net unrealized gains (losses) on available-for-sale securities,		(1.5	)		6.1
Pension and postretirement liability adjustment and other, net of tax benefit of $274.3 and $266.6, respectively(1)		(440.3	)		(418.6	)
Accumulated other comprehensive loss	$	(246.5	)	$	(192.6	)

⁽¹⁾

As of December 31, 2011 and 2010, included $3.8 and $3.2, respectively, related to our share of the pension liability adjustment for EGS.

Summary of common shares issued, treasury shares and shares outstanding

	Common Stock Issued		Treasury Stock			Shares Outstanding
Balance at December 31, 2008		96.523		(45.395	)		51.128
Stock options exercised		0.154		—			0.154
Share repurchases		—		(2.625	)		(2.625	)
Restricted stock and restricted stock units		0.260		0.104			0.364
Other		0.347		—			0.347
Balance at December 31, 2009		97.284		(47.916	)		49.368
Stock options exercised		0.238		—			0.238
Restricted stock and restricted stock units		0.278		0.142			0.420
Other		0.268		—			0.268
Balance at December 31, 2010		98.068		(47.774	)		50.294
Stock options exercised		0.154		—			0.154
Restricted stock and restricted stock units		0.209		0.145			0.354
Other		0.271		—			0.271
Balance at December 31, 2011		98.702		(47.629	)		51.073

Schedule of assumptions in determining the fair value of restricted stock awards granted

	Annual expected stock price volatility			Annual expected dividend yield			Risk-free interest rate			Correlation between total shareholder return for SPX and S&P 500 Composite Index
March 1, 2011:
SPX Corporation		61.0	%		1.27	%		1.03	%		0.7559
S&P 500 Composite Index		30.3	%		n/a			1.03	%
March 1, 2010:
SPX Corporation		62.0	%		1.64	%		1.20	%		0.7250
S&P 500 Composite Index		30.8	%		n/a			1.20	%

Schedule of restricted stock and restricted stock unit activity

	Unvested Restricted Stock and Restricted Stock Units			Weighted-average Grant-Date Fair Value per share
Outstanding at December 31, 2008		1.251		$	58.01
Granted		0.667			33.42
Vested		(0.429	)		41.75
Forfeited		(0.054	)		54.61
Outstanding at December 31, 2009		1.435			51.75
Granted		0.738			48.91
Vested		(0.626	)		50.46
Forfeited		(0.031	)		47.82
Outstanding at December 31, 2010		1.516			50.97
Granted		0.836			62.72
Vested		(0.636	)		51.47
Forfeited		(0.276	)		67.21
Outstanding at December 31, 2011		1.440			54.38

Schedule of stock option activity

	Shares			Weighted- Average Exercise Price
Options outstanding and exercisable at December 31, 2008		1.308		$	64.89
Exercised		(0.154	)		39.69
Terminated		(0.273	)		94.80
Options outstanding and exercisable at December 31, 2009		0.881			59.86
Exercised		(0.238	)		48.21
Terminated		(0.008	)		90.23
Options outstanding and exercisable at December 31, 2010		0.635			63.82
Exercised		(0.154	)		65.44
Terminated		(0.117	)		89.10
Options outstanding and exercisable at December 31, 2011		0.364			54.87