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Long-Term Debt (Schedule Of Debt Instruments) (Details) (USD $) | 12 Months Ended |  | 12 Months Ended |  |  |  | 12 Months Ended |  |  | 12 Months Ended |  | 1 Months Ended | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended | 0 Months Ended | 12 Months Ended
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Jul. 31, 2013 | Jul. 31, 2012 | Jul. 31, 2011 | Jul. 31, 2013 Credit Facility Revolver [Member] | Jul. 31, 2012 Credit Facility Revolver [Member] | Jul. 31, 2013 Industrial Development Bonds [Member] | Jul. 31, 2012 Industrial Development Bonds [Member] | Jul. 31, 2013 Employee Housing Bonds [Member] | Jul. 31, 2012 Employee Housing Bonds [Member] | Jul. 31, 2013 6.50% Notes [Member] | Jul. 31, 2012 6.50% Notes [Member] | Apr. 25, 2011 6.50% Notes [Member] | Jul. 31, 2013 Talisker Canyons Obligation [Member] | Jul. 31, 2012 Talisker Canyons Obligation [Member] | Apr. 25, 2011 6.75% Notes [Member] | Jul. 31, 2011 6.75% Notes [Member] | Jul. 31, 2013 6.75% Notes [Member] | Jul. 31, 2013 Other [Member] | Jul. 31, 2012 Other [Member] | Jul. 31, 2013 Eagle County Bonds [Member] Industrial Development Bonds [Member] | Jul. 31, 2013 Colorado Water Conservation Board Note Outstanding [Member] Other [Member] | Jul. 31, 2013 Breckenridge Terrace [Member] Employee Housing Bonds [Member] | Jul. 31, 2013 Tarnes [Member] Employee Housing Bonds [Member] | Jul. 31, 2013 BC Housing [Member] Employee Housing Bonds [Member] | Jul. 31, 2013 Tenderfoot [Member] Employee Housing Bonds [Member] | Jul. 31, 2013 Tranche A [Member] Employee Housing Bonds [Member] | Jul. 31, 2013 Tranche A [Member] Breckenridge Terrace [Member] Employee Housing Bonds [Member] | Jul. 31, 2013 Tranche A [Member] Tarnes [Member] Employee Housing Bonds [Member] | Jul. 31, 2013 Tranche A [Member] BC Housing [Member] Employee Housing Bonds [Member] | Jul. 31, 2013 Tranche A [Member] Tenderfoot [Member] Employee Housing Bonds [Member] | Jul. 31, 2013 Tranche B [Member] Employee Housing Bonds [Member] | Jul. 31, 2013 Tranche B [Member] Breckenridge Terrace [Member] Employee Housing Bonds [Member] | Jul. 31, 2013 Tranche B [Member] Tarnes [Member] Employee Housing Bonds [Member] | Jul. 31, 2013 Tranche B [Member] BC Housing [Member] Employee Housing Bonds [Member] | Jul. 31, 2013 Tranche B [Member] Tenderfoot [Member] Employee Housing Bonds [Member] | Jul. 31, 2013 Maximum [Member] Employee Housing Bonds [Member] | Jul. 31, 2013 Maximum [Member] 6.50% Notes [Member] | Jul. 31, 2013 Maximum [Member] Other [Member] | Jul. 31, 2013 Maximum [Member] Tranche A [Member] Employee Housing Bonds [Member] | Jul. 31, 2013 Minimum [Member] Employee Housing Bonds [Member] | Jul. 31, 2013 Minimum [Member] 6.50% Notes [Member] | Jul. 31, 2013 Minimum [Member] Other [Member] | Jul. 31, 2013 Minimum [Member] Tranche A [Member] Employee Housing Bonds [Member] | May 29, 2013 Canyons [Member] | Jul. 31, 2013 Canyons [Member]
Accretion Expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000
Pledged Assets, Not Separately Reported, Other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 126,100,000
Total debt | 796,922,000 | 490,765,000 |  | 0 | 0 | 41,200,000 | 41,200,000 | 52,575,000 | 52,575,000 | 390,000,000 | 390,000,000 |  | 306,320,000 | 0 |  |  |  | 6,827,000 | 6,990,000 |  |  | 19,980,000 | 10,410,000 | 10,600,000 | 11,585,000 | 37,780,000 | 14,980,000 | 8,000,000 | 9,100,000 | 5,700,000 | 14,795,000 | 5,000,000 | 2,410,000 | 1,500,000 | 5,885,000 |  |  |  |  |  |  |  |  |  |
Less: Current maturities | 994,000 | 990,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt | 795,928,000 | 489,775,000 |  |  |  | 41,200,000 | 41,200,000 |  |  | 390,000,000 | 390,000,000 |  | 306,320,000 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fiscal year maturity |  |  |  | 2016 |  | 2020 |  |  |  | 2019 |  |  | 2063 |  |  |  |  |  |  |  |  | 2039 | 2039 | 2027 | 2035 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fiscal year maturity, start |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Jul. 31, 2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Jun. 01, 2027 |  | Jul. 31, 2014 |  |  |
Fiscal year maturity, end |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Jul. 31, 2029 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | May 01, 2039 |  | Jul. 31, 2029 |  |  |  |  |  |  |
Stated percentage in the debt instrument | 6.50% |  |  |  |  |  |  |  |  | 6.50% |  |  |  |  |  |  | 6.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  | 400,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reference for interest rate determination |  |  |  | LIBOR plus 1.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | LIBOR plus 0% to 0.05% |  |  |  |  | LIBOR plus 0% to 0.05% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on LIBOR rate |  |  |  | 1.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.05% |  |  |  | 0.00% |  |
Commitment fees under credit facility |  |  |  | 0.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt, maturity date |  |  |  |  |  |  |  |  |  | May 01, 2019 |  |  |  |  |  |  |  |  |  | Aug. 01, 2019 | Sep. 16, 2028 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long term debt interest rate |  |  |  |  |  |  |  |  |  | 6.50% |  |  |  |  |  |  |  |  |  | 6.95% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6.00% | 0.24% |  |  | 0.17% | 0.19% |  |
Issuance of 6.50% senior subordinated notes |  |  |  |  |  |  |  |  |  |  |  | 390,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Premium on early redemption |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.875% |  |  |  | 0.00% |  |  |  |
Purchase call price percentage (in dollars per unit) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.01125 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss on extinguishment of debt | 0 | 0 | 7,372,000 |  |  |  |  |  |  |  |  |  |  |  |  | 7,372,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt, outstanding amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital lease obligations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Effective Date of Acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | May 29, 2013 |
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% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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