Long-Term Debt (Schedule Of Debt Instruments) (Details) - USD ($) $ in Thousands	3 Months Ended
Oct. 31, 2018	Jul. 31, 2018	Oct. 31, 2017
Total debt	$ 1,539,513	$ 1,276,082	$ 1,304,660
Unamortized Debt Issuance Expense	4,063	3,350	3,913
Long-term debt due within one year (Note 5)	48,482	38,455	38,422
Long-term debt, net (Note 5)	1,486,968	1,234,277	1,262,325
Credit Facility Revolver [Member]
Total debt	$ 120,000	130,000	95,000
Fiscal year maturity	2023
Whistler Credit Agreement revolver [Member]
Total debt	$ 72,170	65,353	104,625
Fiscal year maturity	2022
Term Loan [Member]
Total debt	$ 950,000	684,375	712,500
Fiscal year maturity	2023
Employee Housing Bonds [Member]
Total debt	$ 52,575	52,575	52,575
Canyons Obligation [Member]
Total debt	$ 335,947	334,509	330,217
Fiscal year maturity	2063
Other [Member]
Total debt	$ 8,821	$ 9,270	$ 9,743
Maximum [Member] \| Employee Housing Bonds [Member]
Fiscal year maturity, end	Dec. 31, 2039
Maximum [Member] \| Other [Member]
Fiscal year maturity, end	Dec. 31, 2028
Minimum [Member] \| Employee Housing Bonds [Member]
Fiscal year maturity, start	Dec. 31, 2027
Minimum [Member] \| Other [Member]
Fiscal year maturity, start	Dec. 31, 2024

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Latest date the outstanding debt instruments are required to be repaid, in CCYY-MM-DD format.

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Earliest date the outstanding debt instruments are required to be repaid, in CCYY-MM-DD format.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

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Amount of long-term debt and capital leases due within one year or the normal operating cycle, if longer.

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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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