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ACQUISITION, DISCONTINUED OPERATIONS AND FORMATION OF SHANGHAI ELECTRIC JV (Details 2) | 3 Months Ended | 9 Months Ended |  |  |  | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 0 Months Ended | 1 Months Ended | 3 Months Ended
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Sep. 28, 2013 USD ($) | Sep. 29, 2012 USD ($) | Sep. 28, 2013 USD ($) | Sep. 29, 2012 USD ($) | Dec. 31, 2012 USD ($) | Sep. 28, 2013 Shanghai Electric JV | Dec. 30, 2011 Shanghai Electric JV | Jun. 29, 2013 Dielectric USD ($) | Jun. 29, 2013 Dielectric Maximum USD ($) | Sep. 28, 2013 Kayex USD ($) | Mar. 30, 2013 Kayex USD ($) | Dec. 31, 2012 Tianyu USD ($) | Dec. 31, 2012 Tianyu CNY | Jun. 29, 2013 Weil McLain Shandong USD ($) | Mar. 30, 2013 Weil McLain Shandong USD ($) | Dec. 31, 2012 Weil McLain Shandong USD ($) | Sep. 28, 2013 SPX Service Solutions ("Service Solutions") USD ($) | Dec. 31, 2012 SPX Service Solutions ("Service Solutions") USD ($) | Sep. 28, 2013 SPX Service Solutions ("Service Solutions") USD ($) | Sep. 28, 2013 Other businesses sold prior to the earliest date presented in the financial statements USD ($) | Sep. 29, 2012 Other businesses sold prior to the earliest date presented in the financial statements USD ($) | Sep. 28, 2013 Other businesses sold prior to the earliest date presented in the financial statements USD ($) | Sep. 29, 2012 Other businesses sold prior to the earliest date presented in the financial statements USD ($) | Dec. 30, 2011 Certain assets of dry cooling products business Shanghai Electric JV CNY | Jul. 31, 2013 Certain assets of dry cooling products business Shanghai Electric JV CNY | Dec. 31, 2012 Certain assets of dry cooling products business Shanghai Electric JV CNY | Jan. 31, 2012 Certain assets of dry cooling products business Shanghai Electric JV CNY | Mar. 31, 2012 Certain assets of dry cooling products business Shanghai Electric JV USD ($)
Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on sale of business, net of tax | $ 200,000 | $ (700,000) | $ (2,300,000) | $ (1,600,000) |  |  |  |  | $ 100,000 | $ 3,600,000 | $ (2,100,000) | $ (1,800,000) |  |  |  | $ 2,200,000 |  | $ 313,400,000 |  |  |  |  |  |  |  |  |  |
Cash consideration, exclusive of cash transferred |  |  |  |  |  |  |  | 4,700,000 |  |  |  |  | 1 |  |  | 2,700,000 |  |  |  |  |  |  |  |  |  |  |  |
Cash consideration, gross |  |  |  |  |  |  |  |  |  | 6,900,000 |  |  |  |  |  |  |  | 1,134,900,000 |  |  |  |  |  |  | 19,400,000 | 25,800,000 | 51,500,000 |
Cash transferred with discontinued business |  |  |  |  |  |  |  |  |  |  |  | 1,100,000 |  |  |  | 3,100,000 |  |  |  |  |  |  |  |  |  |  |  |
Adjustment to gain (loss) on sale of discontinued operations, net of tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (400,000) |  | (3,100,000) |  | (1,500,000) | (300,000) | (700,000) | (1,900,000) | (1,600,000) |  |  |  |  |
Working capital settlement |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,100,000 |  |  | 800,000 |  |  |  |  |  |  |  |  |  |  |
Income from discontinued operations and related income taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from discontinued operations | 8,700,000 | 17,700,000 | 12,200,000 | 57,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income tax provision | (3,600,000) | (6,000,000) | (4,300,000) | (19,700,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from discontinued operations, net of tax | 5,100,000 | 11,700,000 | 7,900,000 | 38,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Results of operations for businesses reported as discontinued operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | 50,700,000 | 269,600,000 | 154,200,000 | 877,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pre-tax income | 8,300,000 | 18,800,000 | 15,000,000 | 60,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts receivable, net | 28,400,000 |  | 28,400,000 |  | 21,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Inventories, net | 40,900,000 |  | 40,900,000 |  | 32,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other current assets | 1,100,000 |  | 1,100,000 |  | 1,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, plant and equipment, net | 16,800,000 |  | 16,800,000 |  | 16,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill and intangibles, net | 70,600,000 |  | 70,600,000 |  | 71,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets of discontinued operations | 157,800,000 |  | 157,800,000 |  | 142,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts payable | 17,100,000 |  | 17,100,000 |  | 18,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accrued expenses | 14,400,000 |  | 14,400,000 |  | 16,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Liabilities of discontinued operations | 31,500,000 |  | 31,500,000 |  | 34,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest acquired in joint venture (as a percent) |  |  |  |  |  | 45.00% | 45.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dispositions, consideration to be received |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 96,700,000 |  |  |  |
Net gain associated with deconsolidation |  |  |  | $ 20,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 20,500,000

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