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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Fair value of long-term debt | $ 2,700.0 |  | $ 2,700.0 |  | $ 2,100.0
Carrying value of long-term debt | 2,700.0 |  | 2,700.0 |  | 2,100.0
Impact of Tax Cuts and Jobs Act of 2017 | 0.0 |  | 0.0 |  | (50.0)
Selling, general and administrative expenses | 317.5 | $ 310.4 | 875.4 | $ 778.6 |
Other income, net | 1.3 | 2.7 | 6.4 | 5.3 |
Accounting Standards Update 2018-02 |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Impact of Tax Cuts and Jobs Act of 2017 |  |  |  |  | $ 50.0
Accounting Standards Update 2017-07 |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Selling, general and administrative expenses | 1.0 | (1.8) | 3.0 | (5.4) |
Other income, net | 2.2 | $ 1.8 | 6.6 | $ 5.4 |
Other Current Assets |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Restricted cash and cash equivalents | 19.7 |  | 19.7 |  |
Other Current Liabilities |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Restricted cash and cash equivalents | $ 19.7 |  | $ 19.7 |  |

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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=68048583&loc=d3e3636-108311 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 + Details
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