FAIR VALUE MEASUREMENTS - Fair Value Measurements (Details) - USD ($) $ in Thousands	Jul. 31, 2021	Oct. 31, 2020
Assets:
Debt securities	$ 242,898
Fair value, Measurements, Recurring
Assets:
Deferred compensation plan assets	12,380	$ 8,213
Total assets measured at fair value	1,279,279	1,180,842
Liabilities:
Total liabilities measured at fair value	24,391	29,194
Fair value, Measurements, Recurring \| Money market funds
Assets:
Cash equivalents	909,976	889,293
Fair value, Measurements, Recurring \| Time deposits
Assets:
Cash equivalents	30,029
Fair value, Measurements, Recurring \| Level 1
Assets:
Deferred compensation plan assets	12,380	8,213
Total assets measured at fair value	1,027,783	947,867
Liabilities:
Total liabilities measured at fair value	0	0
Fair value, Measurements, Recurring \| Level 1 \| Money market funds
Assets:
Cash equivalents	909,976	889,293
Fair value, Measurements, Recurring \| Level 1 \| Time deposits
Assets:
Cash equivalents	30,029
Fair value, Measurements, Recurring \| Level 2
Assets:
Deferred compensation plan assets	0	0
Total assets measured at fair value	251,496	232,975
Liabilities:
Total liabilities measured at fair value	24,391	29,194
Fair value, Measurements, Recurring \| Level 2 \| Money market funds
Assets:
Cash equivalents	0	0
Fair value, Measurements, Recurring \| Level 2 \| Time deposits
Assets:
Cash equivalents	0
Fair value, Measurements, Recurring \| Level 3
Assets:
Deferred compensation plan assets	0	0
Total assets measured at fair value	0	0
Liabilities:
Total liabilities measured at fair value	0	0
Fair value, Measurements, Recurring \| Level 3 \| Money market funds
Assets:
Cash equivalents	0	0
Fair value, Measurements, Recurring \| Level 3 \| Time deposits
Assets:
Cash equivalents	0
Foreign Currency Forward Contracts \| Fair value, Measurements, Recurring
Assets:
Derivative asset	8,598	82
Liabilities:
Derivative liability	3,709	681
Foreign Currency Forward Contracts \| Fair value, Measurements, Recurring \| Level 1
Assets:
Derivative asset	0	0
Liabilities:
Derivative liability	0	0
Foreign Currency Forward Contracts \| Fair value, Measurements, Recurring \| Level 2
Assets:
Derivative asset	8,598	82
Liabilities:
Derivative liability	3,709	681
Foreign Currency Forward Contracts \| Fair value, Measurements, Recurring \| Level 3
Assets:
Derivative asset	0	0
Liabilities:
Derivative liability	0	0
Forward Starting Interest Rate Swaps
Liabilities:
Derivative liability		28,513
Forward Starting Interest Rate Swaps \| Fair value, Measurements, Recurring
Liabilities:
Derivative liability	20,682
Forward Starting Interest Rate Swaps \| Fair value, Measurements, Recurring \| Level 1
Liabilities:
Derivative liability	0	0
Forward Starting Interest Rate Swaps \| Fair value, Measurements, Recurring \| Level 2
Liabilities:
Derivative liability	20,682	28,513
Forward Starting Interest Rate Swaps \| Fair value, Measurements, Recurring \| Level 3
Liabilities:
Derivative liability	0	0
Bond mutual fund \| Fair value, Measurements, Recurring
Assets:
Debt securities	75,398	50,361
Bond mutual fund \| Fair value, Measurements, Recurring \| Level 1
Assets:
Debt securities	75,398	50,361
Bond mutual fund \| Fair value, Measurements, Recurring \| Level 2
Assets:
Debt securities	0	0
Bond mutual fund \| Fair value, Measurements, Recurring \| Level 3
Assets:
Debt securities	0	0
U.S. government obligations \| Fair value, Measurements, Recurring
Assets:
Debt securities	242,898	232,893
U.S. government obligations \| Fair value, Measurements, Recurring \| Level 1
Assets:
Debt securities	0	0
U.S. government obligations \| Fair value, Measurements, Recurring \| Level 2
Assets:
Debt securities	242,898	232,893
U.S. government obligations \| Fair value, Measurements, Recurring \| Level 3
Assets:
Debt securities	$ 0	$ 0

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value of financial and nonfinancial obligations.

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