CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Restricted cash and cash equivalents (including $12 and $32 in variable interest entities, "VIEs," respectively)	$ 64.0	$ 114.0
Accounts receivable, allowance	0.9	0.4
Vacation ownership mortgages receivable, allowance	2.0	1.0
Vacation ownership mortgages receivable, net of allowance of $2 and $1, respectively (including a net $51 and $59 in VIEs, respectively)	80.0	87.0
Other Assets, Current	34.0	29.0
Restricted cash and cash equivalents (including $2 in VIEs as of each date)	4.0	4.0
Vacation ownership mortgages receivable, allowance	34.0	21.0
Vacation ownership mortgages receivable, net of allowance of $34 and $21, respectively (including a net $327 and $370 in VIEs, respectively)	630.0	632.0
Accrued expenses and other current liabilities (including a net $1 of interest payables in VIEs)	$ 217.0	$ 187.0
Preferred stock, authorized shares	25,000,000	25,000,000
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, issued shares	0	0
Preferred stock, outstanding shares	0	0
Common stock, authorized shares	300,000,000	300,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, issued shares	133,952,744	133,545,864
Treasury stock, shares	9,037,627	8,878,489
Series A Preferred Stock [Member]
Preferred stock, authorized shares	100,000	100,000
VIEs
Restricted cash and cash equivalents (including $12 and $32 in variable interest entities, "VIEs," respectively)	$ 12.0	$ 32.0
Vacation ownership mortgages receivable, net of allowance of $2 and $1, respectively (including a net $51 and $59 in VIEs, respectively)	51.0	59.0
Other Assets, Current	2.0	3.0
Restricted cash and cash equivalents (including $2 in VIEs as of each date)	2.0	2.0
Vacation ownership mortgages receivable, net of allowance of $34 and $21, respectively (including a net $327 and $370 in VIEs, respectively)	327.0	370.0
Accrued expenses and other current liabilities (including a net $1 of interest payables in VIEs)	$ 1.0	$ 1.0

The aggregate of amounts due from customers or clients, within one year of the balance sheet date (or one operating cycle, if longer), for goods or services that have been delivered or sold in the normal course of business and 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 within one year of the balance sheet, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection and net of any write-downs taken for collection uncertainty on the part of the holder, respectively.

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Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-Publisher FASB
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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