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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (Unaudited) - USD ($) shares in Thousands, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 01, 2016 | Sep. 26, 2015 | Oct. 01, 2016 | Sep. 26, 2015
Income Statement [Abstract] |  |  |  |  |
Revenues | [1] | $ 385.2 | $ 374.1 | $ 1,187.4 | $ 1,209.8
Costs and expenses: |  |  |  |  |
Cost of products sold |  | 301.2 | 371.2 | 918.8 | 1,036.4
Selling, general and administrative |  | 76.3 | 106.8 | 239.5 | 322.4
Intangible amortization |  | 0.8 | 1.3 | 2.6 | 3.9
Special charges, net |  | 1.5 | 8.4 | 3.8 | 14.0
Impairment of intangible assets |  | 0.0 | 0.0 | 4.0 | 0.0
Gain on sale of dry cooling business |  | 1.7 | 0.0 | 18.4 | 0.0
Operating income (loss) |  | 7.1 | (113.6) | 37.1 | (166.9)
Other income (expense), net |  | 0.3 | (4.6) | 0.6 | (7.5)
Interest expense |  | (3.8) | (6.3) | (11.1) | (18.5)
Interest income |  | 0.0 | 0.4 | 0.4 | 1.3
Loss on early extinguishment of debt |  | (1.3) | (1.4) | (1.3) | (1.4)
Equity earnings in joint ventures |  | 0.3 | 0.3 | 1.1 | 0.8
Income (loss) from continuing operations before income taxes |  | 2.6 | (125.2) | 26.8 | (192.2)
Income tax (provision) benefit |  | 0.0 | (5.5) | (6.1) | 8.6
Income (loss) from continuing operations |  | 2.6 | (130.7) | 20.7 | (183.6)
Income from discontinued operations, net of tax |  | 0.0 | 0.7 | 0.0 | 80.8
Loss on disposition of discontinued operations, net of tax |  | (0.7) | (0.6) | (2.2) | (1.5)
Income (loss) from discontinued operations, net of tax |  | (0.7) | 0.1 | (2.2) | 79.3
Net income (loss) |  | 1.9 | (130.6) | 18.5 | (104.3)
Less: Net loss attributable to redeemable noncontrolling interests |  | 0.0 | (25.6) | (0.4) | (31.1)
Net income (loss) attributable to SPX Corporation common shareholders |  | 1.9 | (105.0) | 18.9 | (73.2)
Adjustment related to redeemable noncontrolling interest (Note 13) |  | 0.0 | 0.0 | (18.1) | 0.0
Net income (loss) attributable to SPX Corporation common shareholders after adjustment related to redeemable noncontrolling interest |  | 1.9 | (105.0) | 0.8 | (73.2)
Amounts attributable to SPX Corporation common shareholders after adjustment related to redeemable noncontrolling interest: |  |  |  |  |
Income (loss) from continuing operations, net of tax |  | 2.6 | (105.1) | 3.0 | (153.4)
Income (loss) from discontinued operations, net of tax |  | (0.7) | 0.1 | (2.2) | 80.2
Net income (loss) attributable to SPX Corporation common shareholders after adjustment related to redeemable noncontrolling interest |  | $ 1.9 | $ (105.0) | $ 0.8 | $ (73.2)
Basic income (loss) per share of common stock: |  |  |  |  |
Income (loss) from continuing operations attributable to SPX Corporation common shareholders after adjustment related to redeemable noncontrolling interest (in dollars per share) |  | $ 0.06 | $ (2.58) | $ 0.07 | $ (3.78)
Income (loss) from discontinued operations attributable to SPX Corporation common shareholders (in dollars per share) |  | (0.02) | 0.00 | (0.05) | 1.98
Net income (loss) per share attributable to SPX Corporation common shareholders after adjustment related to redeemable noncontrolling interest (in dollars per share) |  | $ 0.04 | $ (2.58) | $ 0.02 | $ (1.80)
Weighted-average number of common shares outstanding — basic |  | 41,721 | 40,663 | 41,537 | 40,590
Diluted income (loss) per share of common stock: |  |  |  |  |
Income (loss) from continuing operations attributable to SPX Corporation common shareholders after adjustment related to redeemable noncontrolling interest (in dollars per share) |  | $ 0.06 | $ (2.58) | $ 0.07 | $ (3.78)
Income (loss) from discontinued operations attributable to SPX Corporation common shareholders (in dollars per share) |  | (0.02) | 0.00 | (0.05) | 1.98
Net income (loss) per share attributable to SPX Corporation common shareholders after adjustment related to redeemable noncontrolling interest (in dollars per share) |  | $ 0.04 | $ (2.58) | $ 0.02 | $ (1.80)
Weighted-average number of common shares outstanding — diluted |  | 42,475 | 40,663 | 41,884 | 40,590
Comprehensive loss |  | $ (4.9) | $ (170.5) | $ (30.6) | $ (233.7)
[1] | Under the percentage-of-completion method, we recognized revenues of $111.0 and $78.8 in the three months ended October 1, 2016 and September 26, 2015, respectively. For the nine months ended October 1, 2016 and September 26, 2015, revenues under the percentage-of-completion method were $347.6 and $325.1, respectively. Costs and estimated earnings in excess of billings on uncompleted contracts accounted for under the percentage-of-completion method were $91.3 and $106.3 as of October 1, 2016 and December 31, 2015, respectively, and are reported as a component of ‘‘Accounts receivable, net’’ in the condensed consolidated balance sheets. Billings in excess of costs and estimated earnings on uncompleted contracts accounted for under the percentage-of-completion method were $75.8 and $116.3 as of October 1, 2016 and December 31, 2015, respectively, and are reported as a component of ‘‘Accrued expenses’’ in the condensed consolidated balance sheets.

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