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EQUITY AND STOCK-BASED COMPENSATION (Details 6) (USD $) In Millions, except Per Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 28, 2013 | Jun. 29, 2013 | Mar. 30, 2013 | Sep. 29, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Sep. 28, 2013 | Sep. 29, 2012
Dividends |  |  |  |  |  |  |  |
Dividends declared, per share (in dollars per share) | $ 0.25 | $ 0.25 | $ 0.25 | $ 0.25 | $ 0.25 | $ 0.25 |  |
Changes in Equity |  |  |  |  |  |  |  |
Balance | $ 2,011.6 |  | $ 2,280.0 | $ 2,175.3 |  | $ 2,237.3 | $ 2,280.0 | $ 2,237.3
Net income (loss) | 62.1 |  |  | 60.2 |  |  | 106.5 | 121.2
Net unrealized gains on qualifying cash flow hedges, net of tax provision | 2.3 |  |  | 0.5 |  |  | 1.2 | 1.1
Net unrealized gains on qualifying cash flow hedges, tax provision | 1.0 |  |  | 0.3 |  |  | 0.6 | 0.6
Net unrealized losses on available-for-sale securities | (0.8) |  |  | (2.9) |  |  | (1.5) | (1.5)
Pension liability adjustment, net of tax provision | 3.2 |  |  | 3.7 |  |  | 18.4 | 13.2
Pension liability adjustment, tax provision | 3.3 |  |  | 2.5 |  |  | 10.9 | 7.6
Foreign currency translation adjustments | 70.8 |  |  | 78.1 |  |  | (2.8) | 0.9
Total comprehensive income (loss), net | 137.6 |  |  | 139.6 |  |  | 121.8 | 134.9
Dividends declared | (11.4) | (11.5) | (11.4) | (12.7) | (12.7) | (12.8) | (34.3) | (38.2)
Exercise of stock options and other incentive plan activity | 3.7 |  |  | 4.6 |  |  | 18.1 | 23.2
Exercise of stock options and other incentive plan activity, tax benefit |  |  |  | 0.1 |  |  | 5.8 | 3.6
Amortization of restricted stock and restricted stock unit grants | 3.7 |  |  | 6.0 |  |  | 29.3 | 34.9
Amortization of restricted stock and stock unit grants relating to discontinued operations |  |  |  | 0.4 |  |  |  | 1.0
Restricted stock and restricted stock unit vesting, net of tax withholdings | (2.0) |  |  |  |  |  | (22.3) | (4.3)
Common stock repurchases |  |  |  |  |  |  | (249.0) | (75.0)
Dividends attributable to noncontrolling interests |  |  |  | (0.7) |  |  |  | (0.7)
Other changes in noncontrolling interests | (1.7) |  |  |  |  |  | (2.1) |
Balance | 2,141.5 | 2,011.6 |  | 2,312.1 | 2,175.3 |  | 2,141.5 | 2,312.1
SPX Corporation Shareholders' Equity |  |  |  |  |  |  |  |
Changes in Equity |  |  |  |  |  |  |  |
Balance | 1,998.7 |  | 2,268.7 | 2,165.2 |  | 2,227.3 | 2,268.7 | 2,227.3
Net income (loss) | 62.9 |  |  | 57.8 |  |  | 104.0 | 118.7
Net unrealized gains on qualifying cash flow hedges, net of tax provision | 2.3 |  |  | 0.5 |  |  | 1.2 | 1.1
Net unrealized losses on available-for-sale securities | (0.8) |  |  | (2.9) |  |  | (1.5) | (1.5)
Pension liability adjustment, net of tax provision | 3.2 |  |  | 3.7 |  |  | 18.4 | 13.2
Foreign currency translation adjustments | 70.1 |  |  | 77.8 |  |  | (2.2) | 0.6
Total comprehensive income (loss), net | 137.7 |  |  | 136.9 |  |  | 119.9 | 132.1
Dividends declared | (11.4) |  |  | (12.7) |  |  | (34.3) | (38.2)
Exercise of stock options and other incentive plan activity | 3.7 |  |  | 4.6 |  |  | 18.1 | 23.2
Amortization of restricted stock and restricted stock unit grants | 3.7 |  |  | 6.0 |  |  | 29.3 | 34.9
Restricted stock and restricted stock unit vesting, net of tax withholdings | (2.0) |  |  |  |  |  | (22.3) | (4.3)
Common stock repurchases |  |  |  |  |  |  | (249.0) | (75.0)
Other changes in noncontrolling interests | (3.0) |  |  |  |  |  | (3.0) |
Balance | 2,127.4 |  |  | 2,300.0 |  |  | 2,127.4 | 2,300.0
Noncontrolling Interests |  |  |  |  |  |  |  |
Changes in Equity |  |  |  |  |  |  |  |
Balance | 12.9 |  | 11.3 | 10.1 |  | 10.0 | 11.3 | 10.0
Net income (loss) | (0.8) |  |  | 2.4 |  |  | 2.5 | 2.5
Foreign currency translation adjustments | 0.7 |  |  | 0.3 |  |  | (0.6) | 0.3
Total comprehensive income (loss), net | (0.1) |  |  | 2.7 |  |  | 1.9 | 2.8
Dividends attributable to noncontrolling interests |  |  |  | (0.7) |  |  |  | (0.7)
Other changes in noncontrolling interests | 1.3 |  |  |  |  |  | 0.9 |
Balance | $ 14.1 |  |  | $ 12.1 |  |  | $ 14.1 | $ 12.1

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