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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) Details of Accumulated Other Comprehensive Income (Loss) Components (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |
Other Comprehensive Income (Loss), Foreign Currency Translation, Dissolution of Entity | $ 0.2 | $ 0.0 | $ 0.0
Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |
Marketable Securities, Unrealized Gain (Loss) | 0.0 | (2.6) | (11.4)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax | 1.2 | 26.9 | 45.6
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax | 0.0 | 4.3 | (8.5)
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax | 0.0 | (4.6) | (11.9)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | 26.5 | 237.8 | 35.5
Accumulated Other Comprehensive Income (Loss) [Member] |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax | (29.8) | (10.0) | (166.2)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | 26.5 | 237.8 | 33.3
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax | (3.3) | 1.9 | (28.2)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | 0.7 | 18.8 | 31.0
Accumulated Foreign Currency Adjustment Attributable to Parent [Member] |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax | 18.4 | (26.4) | (42.3)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | 0.2 | 182.7 | 0.0
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax | (44.8) | 9.1 | (97.0)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | 25.6 | 40.6 | 10.8
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |
Amortization of prior service (cost) credit | 1.5 | 1.4 | 1.1
Defined Benefit Plan, Amortization of Gains (Losses) | 27.1 | 27.4 | 18.5
Defined Benefit Plan, Curtailments | 0.0 | 0.2 | 1.4
Defined Benefit Plan, Effect of Deconsolidation | 0.0 | 15.1 | 0.0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), before Tax | 25.6 | 41.3 | 18.8
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Tax | 0.0 | (0.7) | (5.8)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Net of Tax | 25.6 | 40.6 | 13.0
Accumulated Net Unrealized Investment Gain (Loss) [Member] |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax | (0.1) | 5.4 | 1.3
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | 0.0 | (4.3) | (8.5)
Accumulated Other-than-Temporary Impairment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |
Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Loss, before Tax, Including Portion Attributable to Noncontrolling Interest, Available-for-sale Securities | 0.0 | (2.0) | (0.5)
Foreign Currency Translation Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax | 0.2 | 182.7 | 0.0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax | 0.0 | 182.7 | 0.0
Realized Gain (Loss) on Marketable Securities and Other than Temporary Impairment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |
Other Comprehensive Income (Loss), Realized Holding Gain (Loss) on Securities and Impairment on Securities Arising During Period, Tax | 0.0 | 0.3 | 3.4
Realized Gain Loss On Derivatives [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |
TaxOnDerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoEarnings | (0.5) | (8.1) | (14.6)
Derivative, Gain (Loss) on Derivative, Net | 0.7 | 18.8 | 31.0
T-Lock Amortization [Member] | Realized Gain Loss On Derivatives [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net | 1.2 | 0.0 | 0.0
Australian Hedge Contracts [Member] | Realized Gain Loss On Derivatives [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net | 0.0 | 26.9 | 18.9
Canadian Hedge Contracts [Member] | Realized Gain Loss On Derivatives [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net | $ 0.0 | $ 0.0 | $ 26.7

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- Definition Amount after tax of reclassification adjustment from accumulated other comprehensive income (loss) for actuarial gain (loss) related to pension and other postretirement benefit plans. + 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=65897934&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 15 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e689-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580 Reference 4: 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=65897934&loc=d3e1928-114920 + Details
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