Consolidated Statements of Operations (USD $) In Millions, except Share data in Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CONSOLIDATED STATEMENTS OF OPERATIONS
Revenues	$ 4,721.1	$ 4,773.3	$ 4,894.6
Costs and expenses:
Cost of products sold	3,357.5	3,392.3	3,554.2
Selling, general and administrative	1,068.7	963.9	1,120.9
Intangible amortization	31.8	33.0	34.1
Impairment of goodwill and other long-term assets	38.1	6.7	285.9
Special charges, net	23.1	32.3	23.4
Operating income (loss)	201.9	345.1	(123.9)
Other income (expense), net	484.6	(11.3)	14.0
Interest expense	(69.8)	(112.6)	(114.4)
Interest income	8.6	8.2	6.3
Loss on early extinguishment of debt	(32.5)
Equity earnings in joint ventures	1.4	42.2	38.6
Income (loss) from continuing operations before income taxes	594.2	271.6	(179.4)
Income tax (provision) benefit	(214.1)	(60.3)	14.2
Income (loss) from continuing operations	380.1	211.3	(165.2)
Income (loss) from discontinued operations, net of tax	(5.0)	5.3	35.0
Gain (loss) on disposition of discontinued operations, net of tax	13.3	(4.0)	313.4
Income from discontinued operations, net of tax	8.3	1.3	348.4
Net income	388.4	212.6	183.2
Less: Net income (loss) attributable to noncontrolling interests	(9.5)	2.4	2.8
Net income attributable to SPX Corporation common shareholders	397.9	210.2	180.4
Amounts attributable to SPX Corporation common shareholders:
Income (loss) from continuing operations, net of tax	389.6	209.1	(168.2)
Income from discontinued operations, net of tax	8.3	1.1	348.6
Net income	$ 397.9	$ 210.2	$ 180.4
Basic income (loss) per share of common stock:
Income (loss) from continuing operations attributable to SPX Corporation common shareholders (in dollars per share)	$ 9.19	$ 4.61	$ (3.36)
Income from discontinued operations attributable to SPX Corporation common shareholders (in dollars per share)	$ 0.19	$ 0.02	$ 6.97
Net income per share attributable to SPX Corporation common shareholders (in dollars per share)	$ 9.38	$ 4.63	$ 3.61
Weighted-average number of common shares outstanding - basic (in shares)	42,400	45,384	50,031
Diluted income (loss) per share of common stock:
Income (loss) from continuing operations attributable to SPX Corporation common shareholders (in dollars per share)	$ 9.05	$ 4.55	$ (3.36)
Income from discontinued operations attributable to SPX Corporation common shareholders (in dollars per share)	$ 0.20	$ 0.02	$ 6.97
Net income per share attributable to SPX Corporation common shareholders (in dollars per share)	$ 9.25	$ 4.57	$ 3.61
Weighted-average number of common shares outstanding - diluted (in shares)	43,031	46,006	50,031