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SUPPLEMENTARY GUARANTOR INFORMATION (Supplementary Statements of Condensed Consolidating Cash Flows) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Net cash provided (used) by operating activities | $ 478.5 | $ 338.1 | $ 303.0
INVESTING ACTIVITIES |  |  |
Purchase of property, plant and equipment | (208.6) | (134.9) | (61.7)
Deposits for property, plant and equipment | (87.5) | (16.8) | (7.4)
Intercompany investing | 0.0 | 0.0 | 0.0
Other investing activities | 23.0 | (4.3) | 11.2
Net cash used by investing activities | (273.1) | (156.0) | (57.9)
Payments for Repurchase of Common Stock | (47.5) |  |
FINANCING ACTIVITIES |  |  |
Net proceeds from issuance of common shares | 0.0 | 661.3 | 287.4
Proceeds from issuance of debt | 0.0 | 1,771.5 | 0.0
Debt issuance costs | (1.5) | (28.6) | (5.2)
Borrowings under credit facilities | 0.0 | 0.0 | 105.0
Repayment under credit facilities | 0.0 | 0.0 | (105.0)
Repayments on equipment loans | 0.0 | 0.0 | (95.6)
Repurchase of debt | (234.5) | (1,720.7) | (305.4)
Acquisition of noncontrolling interest | 0.0 | (105.0) | 0.0
Distributions of partnership equity | (44.2) | (52.9) | (59.9)
Intercompany financing | 0.0 | 0.0 | 0.0
Other financing activities | (47.5) | (26.7) | (27.7)
Net cash provided (used) by financing activities | (375.2) | 498.9 | (206.4)
EFFECT OF EXCHANGE RATE CHANGES ON CASH | (2.3) | 3.3 | (0.5)
Increase (Decrease) in Cash and Cash Equivalents, Including Cash Classified Within Current Assets of Discontinued Operations | (172.1) | 684.3 | 38.2
LESS: INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS CLASSIFIED WITHIN CURRENT ASSETS OF DISCONTINUED OPERATIONS | (17.0) | 18.8 | (35.3)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS | (155.1) | 665.5 | 73.5
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR | 978.3 | 312.8 | 239.3
CASH AND CASH EQUIVALENTS AT END OF YEAR | 823.2 | 978.3 | 312.8
Consolidation, Eliminations [Member] |  |  |
Net cash provided (used) by operating activities | 0.0 | 0.0 | 0.0
INVESTING ACTIVITIES |  |  |
Purchase of property, plant and equipment | 0.0 | 0.0 | 0.0
Deposits for property, plant and equipment | 0.0 | 0.0 | 0.0
Intercompany investing | (512.7) | (173.3) | (236.3)
Other investing activities | 0.0 | 0.0 | 0.0
Net cash used by investing activities | (512.7) | (173.3) | (236.3)
Payments for Repurchase of Common Stock | 0.0 |  |
FINANCING ACTIVITIES |  |  |
Net proceeds from issuance of common shares |  | 0.0 | 0.0
Proceeds from issuance of debt |  | 0.0 |
Debt issuance costs | 0.0 | 0.0 | 0.0
Borrowings under credit facilities |  |  | 0.0
Repayment under credit facilities |  |  | 0.0
Repayments on equipment loans |  |  | 0.0
Repurchase of debt | 0.0 | 0.0 | 0.0
Acquisition of noncontrolling interest |  | 0.0 |
Distributions of partnership equity | 0.0 | 0.0 | 0.0
Intercompany financing | 512.7 | 173.3 | 236.3
Other financing activities | 0.0 | 0.0 | 0.0
Net cash provided (used) by financing activities | 512.7 | 173.3 | 236.3
EFFECT OF EXCHANGE RATE CHANGES ON CASH | 0.0 | 0.0 | 0.0
Increase (Decrease) in Cash and Cash Equivalents, Including Cash Classified Within Current Assets of Discontinued Operations | 0.0 | 0.0 | 0.0
LESS: INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS CLASSIFIED WITHIN CURRENT ASSETS OF DISCONTINUED OPERATIONS | 0.0 | 0.0 | 0.0
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS | 0.0 | 0.0 | 0.0
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR | 0.0 | 0.0 | 0.0
CASH AND CASH EQUIVALENTS AT END OF YEAR | 0.0 | 0.0 | 0.0
Parent [Member] | Reportable Legal Entities [Member] |  |  |
Net cash provided (used) by operating activities | (120.7) | (166.8) | (275.7)
INVESTING ACTIVITIES |  |  |
Purchase of property, plant and equipment | (1.2) | (3.4) | (6.2)
Deposits for property, plant and equipment | 0.0 | 0.0 | 0.0
Intercompany investing | 399.1 | 225.7 | 356.6
Other investing activities | 0.0 | (7.7) | 0.4
Net cash used by investing activities | 397.9 | 214.6 | 350.8
Payments for Repurchase of Common Stock | (47.5) |  |
FINANCING ACTIVITIES |  |  |
Net proceeds from issuance of common shares |  | 661.3 | 287.4
Proceeds from issuance of debt |  | 1,771.5 |
Debt issuance costs | (1.5) | (28.6) | (5.2)
Borrowings under credit facilities |  |  | 105.0
Repayment under credit facilities |  |  | (105.0)
Repayments on equipment loans |  |  | (95.6)
Repurchase of debt | (234.5) | (1,720.7) | (305.4)
Acquisition of noncontrolling interest |  | (105.0) |
Distributions of partnership equity | 0.0 | 0.0 | 0.0
Intercompany financing | (120.7) | 45.0 | 117.0
Other financing activities | (2.1) | (5.8) | (0.6)
Net cash provided (used) by financing activities | (406.3) | 617.7 | (2.4)
EFFECT OF EXCHANGE RATE CHANGES ON CASH | 0.0 | 0.0 | 0.0
Increase (Decrease) in Cash and Cash Equivalents, Including Cash Classified Within Current Assets of Discontinued Operations | (129.1) | 665.5 | 72.7
LESS: INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS CLASSIFIED WITHIN CURRENT ASSETS OF DISCONTINUED OPERATIONS | 0.0 | 0.0 | 0.0
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS | (129.1) | 665.5 | 72.7
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR | 948.9 | 283.4 | 210.7
CASH AND CASH EQUIVALENTS AT END OF YEAR | 819.8 | 948.9 | 283.4
Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member] |  |  |
Net cash provided (used) by operating activities | 741.0 | 430.0 | 462.9
INVESTING ACTIVITIES |  |  |
Purchase of property, plant and equipment | (207.3) | (79.8) | (55.1)
Deposits for property, plant and equipment | (82.3) | (11.7) | (4.9)
Intercompany investing | (7.1) | (7.3) | (3.3)
Other investing activities | 3.1 | 3.4 | 10.8
Net cash used by investing activities | (293.6) | (95.4) | (52.5)
Payments for Repurchase of Common Stock | 0.0 |  |
FINANCING ACTIVITIES |  |  |
Net proceeds from issuance of common shares |  | 0.0 | 0.0
Proceeds from issuance of debt |  | 0.0 |
Debt issuance costs | 0.0 | 0.0 | 0.0
Borrowings under credit facilities |  |  | 0.0
Repayment under credit facilities |  |  | 0.0
Repayments on equipment loans |  |  | 0.0
Repurchase of debt | 0.0 | 0.0 | 0.0
Acquisition of noncontrolling interest |  | 0.0 |
Distributions of partnership equity | (44.2) | (52.9) | (59.9)
Intercompany financing | (402.4) | (277.6) | (339.9)
Other financing activities | (2.2) | (4.5) | (9.9)
Net cash provided (used) by financing activities | (448.8) | (335.0) | (409.7)
EFFECT OF EXCHANGE RATE CHANGES ON CASH | 0.0 | 0.0 | 0.0
Increase (Decrease) in Cash and Cash Equivalents, Including Cash Classified Within Current Assets of Discontinued Operations | (1.4) | (0.4) | 0.7
LESS: INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS CLASSIFIED WITHIN CURRENT ASSETS OF DISCONTINUED OPERATIONS | 0.0 | 0.0 | 0.0
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS | (1.4) | (0.4) | 0.7
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR | 2.1 | 2.5 | 1.8
CASH AND CASH EQUIVALENTS AT END OF YEAR | 0.7 | 2.1 | 2.5
Non-Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member] |  |  |
Net cash provided (used) by operating activities | (141.8) | 74.9 | 115.8
INVESTING ACTIVITIES |  |  |
Purchase of property, plant and equipment | (0.1) | (51.7) | (0.4)
Deposits for property, plant and equipment | (5.2) | (5.1) | (2.5)
Intercompany investing | 120.7 | (45.1) | (117.0)
Other investing activities | 19.9 | 0.0 | 0.0
Net cash used by investing activities | 135.3 | (101.9) | (119.9)
Payments for Repurchase of Common Stock | 0.0 |  |
FINANCING ACTIVITIES |  |  |
Net proceeds from issuance of common shares |  | 0.0 | 0.0
Proceeds from issuance of debt |  | 0.0 |
Debt issuance costs | 0.0 | 0.0 | 0.0
Borrowings under credit facilities |  |  | 0.0
Repayment under credit facilities |  |  | 0.0
Repayments on equipment loans |  |  | 0.0
Repurchase of debt | 0.0 | 0.0 | 0.0
Acquisition of noncontrolling interest |  | 0.0 |
Distributions of partnership equity | 0.0 | 0.0 | 0.0
Intercompany financing | 10.4 | 59.3 | (13.4)
Other financing activities | (43.2) | (16.4) | (17.2)
Net cash provided (used) by financing activities | (32.8) | 42.9 | (30.6)
EFFECT OF EXCHANGE RATE CHANGES ON CASH | (2.3) | 3.3 | (0.5)
Increase (Decrease) in Cash and Cash Equivalents, Including Cash Classified Within Current Assets of Discontinued Operations | (41.6) | 19.2 | (35.2)
LESS: INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS CLASSIFIED WITHIN CURRENT ASSETS OF DISCONTINUED OPERATIONS | (17.0) | 18.8 | (35.3)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS | (24.6) | 0.4 | 0.1
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR | 27.3 | 26.9 | 26.8
CASH AND CASH EQUIVALENTS AT END OF YEAR | $ 2.7 | $ 27.3 | $ 26.9

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