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
	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%