| **Acquisitions (Narrative) (Details) (USD $)**                                                                                | 0 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | 12 Months Ended | 0 Months Ended | 3 Months Ended | 12 Months Ended                                                     | 0 Months Ended | 1 Months Ended |           | 1 Months Ended    |                          |           |                           | 0 Months Ended |
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| Contingent Consideration, Key Assumptions for Valuation                                                                       | The Company estimated the likelihood and timing of achieving the relevant thresholds for the Contingent Consideration payments using discounted cash flow projection valuation models. The Company considered two probability weighed models to calculate projected EBITDA performance; (1) Canyons on a standalone basis, and (2) Canyons plus the inclusion of the ski terrain of PCMR (excluding the base area) in the Lease. The models considered the following factors: (i) an estimation of the long-term rate of EBITDA growth at 5.5% after the initial five years of operations; (ii) estimated annual capital expenditures between $10.0 million to $15.0 million in the initial five years of operations, subsequently growing at inflation of 3%; (iii) threshold amount increased by an inflation linked index of 2%; and (iv) a discount rate of 15%. |            |           |           |                                                                |           |           |      |              |                     |      |                      |           |   |   |   |
| Business Acquisition, Contingent Consideration, at Fair Value                                                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | $ 10,500,000    | $ 9,100,000    |           |                                                                | $ 10,500,000   | $ 10,500,000   |      |              |                     |      |                      |           |   |   |   |
| Change in Fair Value of Contingent Consideration                                                                              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | 1,400,000       |           |           |                                                                |           |           |      |              |                     |      |                      |           |   |   |   |
| Business Acquisition, Purchase Price Allocation, Talisker Canyons Obligation                                                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | 626,622,000     | 796,922,000    |           |                                                                |           |           |      |              |                     |      |                      |           | 311,858,000 | 306,320,000 |   |
| Capital Leases, Future Minimum Payments Due, Next Twelve Months                                                               |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | 25,589,000      |           |           |                                                                |           |           |      |              |                     |      |                      |           |   |   |   |
| Business Acquisition, Effective Date of Acquisition                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |            |           |           | May 24,				 2013                                                    |           |           |      | Dec. 17,				 2012 | Feb.				01,				 2012     |      | Apr. 12,				 2012         |           |   |   | Sep. 11,				 2014 |
| Business Acquisition, Purchase Price Allocation, Current Assets, Other Current Assets                                         | 1,698,000                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |            |           |           |                                                                |           |           |      | 1,000,000         |                     | 2,700,000 |                      | 2,500,000      |   |   |   |
| Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |            |           |           |                                                                |           |           |      |              |                     | 700,000   |                      | 800,000        |   |   |   |
| Business Acquisition, Purchase Price Allocation, Goodwill                                                                     | 106,414,000                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |            |           |           |                                                                |           |           |      | 2,000,000         |                     | 1,800,000 |                      |           |   |   |   |
| Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |            |           |           |                                                                |           |           |      | 1,000,000         |                     | 500,000   |                      | 1,200,000      |   |   |   |
| Payments to Acquire Businesses, Net of Cash Acquired                                                                          |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | 0               | 19,958,000     | 23,479,000     |                                                                |           |           |      | 20,000,000        | 5,700,000                |      | 18,200,000                |           |   |   | 182,500,000 |
| Business Acquisition, Purchase Price Allocation, Property Plant and Equipment Acquired                                        | 5,475,000                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |            |           |           |                                                                |           |           |      | 17,800,000        |                     | 2,428,000 |                      | 16,800,000     |   |   |   |
| Acquired Finite-lived Intangible Assets, Weighted Average Useful Life                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |            |           |           |                                                                | 50 years       |           |      | 10 years          | 6 years 8 months 12 days |      | 21 years 6 months 16 days |           |   |   |   |
| Business Acquisition, Purchase Price Allocation, Total Liabilities Assumed                                                    | 344,052,000                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |            |           |           |                                                                |           |           |      | 1,800,000         |                     | 2,600,000 |                      | 3,100,000      |   |   |   |
| Net operation revenue from acquiree                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |            |           |           |                                                                |           | 67,200,000     | 3,900,000 |              |                     |      |                      |           |   |   |   |
| Capital Leases, Future Minimum Payments Due in Two Years                                                                      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | 26,101,000      |           |           |                                                                |           |           |      |              |                     |      |                      |           |   |   |   |
| Capital Leases, Future Minimum Payments Due in Three Years                                                                    |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | 26,623,000      |           |           |                                                                |           |           |      |              |                     |      |                      |           |   |   |   |
| Capital Leases, Future Minimum Payments Due in Four Years                                                                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | 27,156,000      |           |           |                                                                |           |           |      |              |                     |      |                      |           |   |   |   |
| Capital Leases, Future Minimum Payments Due in Five Years                                                                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | 27,699,000      |           |           |                                                                |           |           |      |              |                     |      |                      |           |   |   |   |
| Capital Leases, Future Minimum Payments Due Thereafter                                                                        |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | 1,952,077,000   |           |           |                                                                |           |           |      |              |                     |      |                      |           |   |   |   |
| Capital Leases, Future Minimum Payments Due                                                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | 2,085,245,000   |           |           |                                                                |           |           |      |              |                     |      |                      |           |   |   |   |
| Capital Leases, Future Minimum Payments, Interest Included in Payments                                                        |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | (1,773,387,000) |           |           |                                                                |           |           |      |              |                     |      |                      |           |   |   |   |
| Initial Capital Lease Term                                                                                                    |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |            |           |           | 50 years                                                            |           |           |      |              |                     |      |                      |           |   |   |   |
| Optional Lease Renewal Term                                                                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | P10Y            |           |           | six 50-year renewal options                                         |           |           |      |              |                     |      |                      |           |   |   |   |
| Minimum Capital Lease Payment, Annual                                                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |            |           |           | 25,000,000                                                          |           |           |      |              |                     |      |                      |           |   |   |   |
| Adjustments to Capital Lease Annual Payments                                                                                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |            |           |           | inflation linked index of CPI less 1%, with a floor of 2% per annum |           |           |      |              |                     |      |                      |           |   |   |   |
| Talisker Canyons Obligation, Interest Rate                                                                                    |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | 10.00%          |           |           |                                                                |           |           |      |              |                     |      |                      |           |   |   |   |
| Business Combination, Contingent Consideration Arrangements, Description                                                      | 42% of the amount by which EBITDA for the resort operations, as calculated under the Lease, exceeds approximately $35 million, with such threshold amount increased by an inflation linked index and a 10% adjustment for any capital improvements or investments made under the Lease by the Company (the "Contingent Consideration").                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |            |           |           |                                                                |           |           |      |              |                     |      |                      |           |   |   |   |
| Business Acquisition, Purchase Price Allocation, Commitment Liabilities                                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |            |           |           | 20,300,000                                                          |           |           |      |              |                     |      |                      |           |   |   |   |
| Goodwill, Purchase Accounting Adjustments                                                                                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | $ 32,900,000    |           |           |                                                                |           |           |      |              |                     |      |                      |           |   |   |   |

| X                                                                                                                                                                                                                                                                   |
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| - Definition
Adjustments to Capital Lease Annual Payments
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| - Definition
The amount of acquisition cost of a business combination allocated to commitment liabilities assumed.
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No definition available.
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The amount of acquisition cost of a business combination allocated to prepaid expenses and other current assets. Does not include amounts allocated to cash and cash equivalents, marketable securities, receivables, inventory, and assets not to be used.
+ References
No definition available.
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.
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No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                    |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The amount of acquisition cost of a business combination allocated to property, plant and equipment to be used in ongoing operations.
+ References
No definition available.
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The amount of acquisition cost of a business combination allocated to liabilities assumed.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                         |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Interest rate for Talisker Canyons Obligation.
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No definition available.
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| X                                                                                                                                                                                                                                                                               |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Fair Value of Contingent Consideration Liability
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No definition available.
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| - Definition
The key inputs of the arrangement and market participant assumptions considered when developing the assumptions used to determine the fair value of the arrangement.
+ References
No definition available.
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| X                                                                                                                                                                                                                                 |
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| - Definition
Initial Capital Lease Term
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No definition available.
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| X                                                                                                                                                                                                                                                                                   |
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| - Definition
Minimum amount of payment required annually for capital lease.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                  |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Number of years in optional renewal terms.
+ References
No definition available.
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
+ References
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
For contingent consideration arrangements recognized in connection with a business combination, this element represents a description of such arrangements.
+ References
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of intangible assets, excluding goodwill, acquired at the acquisition date.
+ References
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The amount of identifiable intangible assets recognized as of the acquisition date.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of minimum lease payments for capital leases.
+ References
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| - Definition
Amount of minimum lease payments maturing in the next fiscal year following the latest fiscal year for capital leases.
+ References
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| - Definition
Amount of minimum lease payments maturing in the fifth fiscal year following the latest fiscal year for capital leases.
+ References
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| - Definition
Amount of minimum lease payments maturing in the forth fiscal year following the latest fiscal year for capital leases.
+ References
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| - Definition
Amount of minimum lease payments maturing in the third fiscal year following the latest fiscal year for capital leases.
+ References
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of minimum lease payments maturing in the second fiscal year following the latest fiscal year for capital leases.
+ References
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of minimum lease payments maturing after the fifth fiscal year following the latest fiscal year for capital leases.
+ References
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount necessary to reduce net minimum lease payments to present value for capital leases.
+ References
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| - Definition
Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.
+ References
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.
+ References
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.
+ References
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