CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
Revenues	$ 1,133.7	$ 1,153.5
Costs and expenses:
Cost of products sold	832.5	853.6
Selling, general and administrative	268.0	271.5
Intangible amortization	8.2	8.7
Impairment of intangible assets	2.0
Special charges, net	0.4	2.4
Operating income	22.6	17.3
Other income, net	2.2	21.8
Interest expense	(29.2)	(28.5)
Interest income	2.1	1.3
Equity earnings in joint ventures	9.1	9.5
Income from continuing operations before income taxes	6.8	21.4
Income tax (provision) benefit	4.2	(13.1)
Income from continuing operations	11.0	8.3
Income (loss) from discontinued operations, net of tax	(2.2)	4.8
Loss on disposition of discontinued operations, net of tax	(5.2)	(0.3)
Income (loss) from discontinued operations, net of tax	(7.4)	4.5
Net income	3.6	12.8
Net income (loss) attributable to noncontrolling interests	1.3	(0.7)
Net income attributable to SPX Corporation common shareholders	2.3	13.5
Amounts attributable to SPX Corporation common shareholders:
Income from continuing operations, net of tax	9.7	9.0
Income (loss) from discontinued operations, net of tax	(7.4)	4.5
Net income	2.3	13.5
Basic income per share of common stock:
Income from continuing operations attributable to SPX Corporation common shareholders (in dollars per share)	$ 0.21	$ 0.18
Income (loss) from discontinued operations attributable to SPX Corporation common shareholders (in dollars per share)	$ (0.16)	$ 0.09
Net income per share attributable to SPX Corporation common shareholders (in dollars per share)	$ 0.05	$ 0.27
Weighted-average number of common shares outstanding - basic (in shares)	46,418	50,613
Diluted income per share of common stock:
Income from continuing operations attributable to SPX Corporation common shareholders (in dollars per share)	$ 0.20	$ 0.17
Income (loss) from discontinued operations attributable to SPX Corporation common shareholders (in dollars per share)	$ (0.15)	$ 0.09
Net income per share attributable to SPX Corporation common shareholders (in dollars per share)	$ 0.05	$ 0.26
Weighted-average number of common shares outstanding - diluted (in shares)	47,450	51,459
Comprehensive income (loss)	$ (72.2)	$ 78.0