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EMPLOYEE BENEFIT PLANS (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended
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Sep. 27, 2014 | Mar. 29, 2014 item | Sep. 28, 2013 | Sep. 27, 2014 | Sep. 28, 2013 | Sep. 27, 2014 Discontinued operations | Sep. 27, 2014 Domestic Pension Plans | Dec. 31, 2013 Domestic Pension Plans | Sep. 28, 2013 Domestic Pension Plans | Sep. 27, 2014 Domestic Pension Plans | Sep. 28, 2013 Domestic Pension Plans | Sep. 27, 2014 Foreign Pension Plans | Sep. 28, 2013 Foreign Pension Plans | Sep. 27, 2014 Foreign Pension Plans | Sep. 28, 2013 Foreign Pension Plans | Sep. 27, 2014 Postretirement Plans | Sep. 28, 2013 Postretirement Plans | Sep. 27, 2014 Postretirement Plans | Sep. 28, 2013 Postretirement Plans
EMPLOYEE BENEFIT PLANS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of eligible former employees offered with voluntary single lump-sum payment option in lieu of a future pension benefit |  | 7,100 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of projected benefit obligation of the Plan settled as a result of lump-sum payments |  | 38.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Projected benefit obligation of the Plan settled as a result of lump-sum payments |  | $ 165.2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Employee benefit plans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Charge reflected in net periodic pension benefit expense |  | 4.6 |  |  |  |  |  |  |  | 4.6 |  |  |  |  |  |  |  |  |
Net periodic pension/postretirement benefit expense (income) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  |  |  |  |  |  | 1.8 |  | 1.9 | 5.4 | 5.6 | 0.7 | 0.6 | 2.1 | 2.0 | 0.1 | 0.1 | 0.4 | 0.3
Interest cost |  |  |  |  |  |  | 4.5 |  | 12.0 | 15.7 | 36.0 | 3.5 | 3.4 | 10.5 | 10.0 | 1.3 | 1.2 | 3.9 | 3.6
Expected return on plan assets |  |  |  |  |  |  | (4.7) |  | (18.8) | (14.9) | (56.3) | (4.3) | (4.4) | (12.8) | (13.1) |  |  |  |
Settlement charges (credits), net |  |  |  |  |  |  | (0.1) |  |  | 0.4 |  |  |  |  |  |  |  |  |
Amortization of unrecognized prior service credits |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (0.1) | (0.4) | (0.2) | (1.0)
Recognized net actuarial loss |  |  |  |  |  |  |  |  |  | 14.8 |  |  |  |  |  |  |  |  |
Net periodic pension and postretirement benefit expense (income) | 2.8 |  | (4.2) | 25.6 | (12.7) |  | 1.5 |  | (4.9) | 21.4 | (14.7) | (0.1) | (0.4) | (0.2) | (1.1) | 1.3 | 0.9 | 4.1 | 2.9
Less: Net periodic pension benefit income of discontinued operations |  |  |  |  |  |  |  |  |  |  |  | (0.1) | (0.2) | (0.3) | (0.2) |  |  |  |
Net periodic pension benefit expense (income) of continuing operations |  |  |  |  |  |  |  |  |  |  |  |  | (0.2) | 0.1 | (0.9) |  |  |  |
Reduction to estimated settlement charge |  |  |  |  |  |  |  | 4.2 |  |  |  |  |  |  |  |  |  |  |
Employer contribution to pension plan |  |  |  | $ 9.7 |  | $ 2.0 |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Represents the amount of charge reflected in net periodic benefit expense related to the partial settlement of the SPX U.S. Pension Plan. + References No definition available. + Details
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- Definition Represents the total amount of net periodic benefit (cost) for defined benefit plans for the period related to discontinued operations. + References No definition available. + Details
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- Definition Represents the amount of reduction to the estimated settlement charge reflected in net periodic benefit expense related to the partial settlement of the SPX U.S. Pension Plan. + References No definition available. + Details
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- Definition Represents the number of eligible former employees offered with voluntary single lump-sum payment option in lieu of a future pension benefit under the Plan during a designated election period. + References No definition available. + Details
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- Definition For continuing operations, the amount of pension and other (such as medical, dental and life insurance) postretirement benefit costs recognized during the period for defined benefit plans (periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss) on assets, prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments). + References No definition available. + Details
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- Definition Represents the percentage of projected benefit obligation settled as a result of lump-sum payments during the period. + References No definition available. + Details
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- Definition The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition Amount before tax, after reclassification adjustments, of actuarial gain (loss) that has not been recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580 + Details
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- Definition An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Glossary Expected Return on Plan Assets -URI http://asc.fasb.org/extlink&oid=6512136 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Glossary Expected Return on Plan Assets -URI http://asc.fasb.org/extlink&oid=6512171 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(2) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition Amount of net gain (loss) recognized in net periodic benefit cost as a result of an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include, but are not limited to, lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contracts to cover vested benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 15 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=7577095&loc=d3e8001-114927 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(7) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Service Cost (Component of Net Periodic Pension Cost) -URI http://asc.fasb.org/extlink&oid=6525008 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition The amount of cash or cash equivalents contributed by the entity to fund its pension plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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