FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Apr. 10, 2015
Fair Value of Financial Instruments
Restricted cash and cash equivalents	$ 64.0	$ 64.0	$ 114.0
Debt issuance costs	8.0	8.0	10.0
5.625% Senior Notes
Fair Value of Financial Instruments
Senior notes	(350.0)	(350.0)	(350.0)	$ (350.0)
Debt issuance costs	5.0	5.0	6.0
Revolving Credit Facility
Fair Value of Financial Instruments
Revolving credit facility	(311.0)	(311.0)	(240.0)
Debt issuance costs	3.0	3.0	4.0
HVO
Fair Value of Financial Instruments
Investments in marketable securities	15.0	15.0	14.0
Unrealized trading gain	1.0	1.0
Carrying Amount
Fair Value of Financial Instruments
Cash and cash equivalents	173.0	173.0	126.0
Restricted cash and cash equivalents	68.0	68.0	118.0
Financing receivables	34.0	34.0	19.0
Vacation ownership mortgages receivable	710.0	710.0	719.0
Investments in marketable securities	15.0	15.0	14.0
Securitized debt	365.0	365.0	430.0
Revolving credit facility	(308.0)	(308.0)	(236.0)
Senior notes	(345.0)	(345.0)	(344.0)
Carrying Amount \| 5.625% Senior Notes
Fair Value of Financial Instruments
Debt issuance costs	5.0	5.0	6.0
Carrying Amount \| Revolving Credit Facility
Fair Value of Financial Instruments
Debt issuance costs	3.0	3.0	4.0
Fair Value
Fair Value of Financial Instruments
Cash and cash equivalents	173.0	173.0	126.0
Restricted cash and cash equivalents	68.0	68.0	118.0
Financing receivables	34.0	34.0	19.0
Vacation ownership mortgages receivable	745.0	745.0	737.0
Investments in marketable securities	15.0	15.0	14.0
Securitized debt	366.0	366.0	425.0
Revolving credit facility	(311.0)	(311.0)	(240.0)
Senior notes	$ (363.0)	$ (363.0)	$ (361.0)

Amount of unrealized gain (loss) on investments in debt and equity securities classified as available-for-sale securities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of assets pledged to secure a debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Total debt and equity financial instruments including: (1) securities held-to-maturity, (2) trading securities, and (3) securities available-for-sale.

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An amount representing an agreement for an unconditional promise by the maker to pay the Entity (holder) a definite sum of money at a future date(s) more than one year from the balance sheet date. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale.

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Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.

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The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. For a classified balance sheet represents the current portion only (the noncurrent portion has a separate concept); there is a separate and distinct element for unclassified presentations.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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