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Debt - Narrative (Details) - USD ($) |  |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | ---
Oct. 16, 2020 | Apr. 01, 2020 | Jul. 31, 2021 | Jul. 31, 2021 | Oct. 31, 2020
Schedule of Long Term And Short Term Debt Instruments [Line Items] |  |  |  |  |
Short-term debt |  |  | $ 440,100,000 | $ 440,100,000 | $ 409,300,000
Term loan |  |  |  |  |
Schedule of Long Term And Short Term Debt Instruments [Line Items] |  |  |  |  |
Short-term debt |  |  | 350,000,000.0 | 350,000,000.0 | $ 350,000,000.0
Term Loan Agreement 2020 | Term loan |  |  |  |  |
Schedule of Long Term And Short Term Debt Instruments [Line Items] |  |  |  |  |
Debt term | 364 days |  |  |  |
Debt instrument, face amount | $ 350,000,000 |  | 350,000,000.0 | 350,000,000.0 |
Short-term debt |  |  | $ 350,000,000 | $ 350,000,000 |
Interest rate |  |  | 0.90% | 0.90% |
Term Loan Agreement 2020 | Term loan | Base Rate |  |  |  |  |
Schedule of Long Term And Short Term Debt Instruments [Line Items] |  |  |  |  |
Debt instrument, basis spread on variable rate | 0.00% |  |  |  |
Term Loan Agreement 2020 | Term loan | London Interbank Offered Rate (LIBOR) |  |  |  |  |
Schedule of Long Term And Short Term Debt Instruments [Line Items] |  |  |  |  |
Debt instrument, basis spread on variable rate | 0.80% |  |  |  |
Credit Agreement 2020 | Line of Credit | Revolving Credit Facility And Term Loan Facility 2020 |  |  |  |  |
Schedule of Long Term And Short Term Debt Instruments [Line Items] |  |  |  |  |
Potential additional borrowing capacity |  | $ 1,605,000,000 |  |  |
Required minimum interest coverage ratio |  | 3.00 |  |  |
Required maximum total leverage ratio |  | 3.75 |  |  |
Interest coverage ratio |  |  | 39.88 | 39.88 |
Total leverage ratio |  |  | 1.52 | 1.52 |
Interest coverage ratio and total leverage ratio, expected minimum compliance period |  |  |  | 12 months |
Credit Agreement 2020 | Line of Credit | Revolving Credit Facility And Term Loan Facility 2020 | Base Rate | Minimum |  |  |  |  |
Schedule of Long Term And Short Term Debt Instruments [Line Items] |  |  |  |  |
Debt instrument, basis spread on variable rate |  | 0.00% |  |  |
Credit Agreement 2020 | Line of Credit | Revolving Credit Facility And Term Loan Facility 2020 | Base Rate | Maximum |  |  |  |  |
Schedule of Long Term And Short Term Debt Instruments [Line Items] |  |  |  |  |
Debt instrument, basis spread on variable rate |  | 0.50% |  |  |
Credit Agreement 2020 | Line of Credit | Revolving Credit Facility And Term Loan Facility 2020 | London Interbank Offered Rate (LIBOR) | Minimum |  |  |  |  |
Schedule of Long Term And Short Term Debt Instruments [Line Items] |  |  |  |  |
Debt instrument, basis spread on variable rate |  | 0.75% |  |  |
Credit Agreement 2020 | Line of Credit | Revolving Credit Facility And Term Loan Facility 2020 | London Interbank Offered Rate (LIBOR) | Maximum |  |  |  |  |
Schedule of Long Term And Short Term Debt Instruments [Line Items] |  |  |  |  |
Debt instrument, basis spread on variable rate |  | 1.50% |  |  |
Credit Agreement 2020 | Line of Credit | Revolving Credit Facility |  |  |  |  |
Schedule of Long Term And Short Term Debt Instruments [Line Items] |  |  |  |  |
Aggregate principal amount |  | $ 1,290,000,000 | $ 1,290,000,000 | $ 1,290,000,000 |
Proceeds from line of credit |  | $ 445,000,000 |  |  |
Debt outstanding |  |  | 330,000,000 | 330,000,000 |
Available borrowing capacity |  |  | 958,600,000 | 958,600,000 |
Outstanding letters of credit |  |  | 1,400,000 | 1,400,000 |
Credit Agreement 2020 | Line of Credit | Revolving Credit Facility | Minimum |  |  |  |  |
Schedule of Long Term And Short Term Debt Instruments [Line Items] |  |  |  |  |
Commitment fee percentage |  | 0.10% |  |  |
Credit Agreement 2020 | Line of Credit | Revolving Credit Facility | Maximum |  |  |  |  |
Schedule of Long Term And Short Term Debt Instruments [Line Items] |  |  |  |  |
Commitment fee percentage |  | 0.20% |  |  |
Credit Agreement 2020 | Line of Credit | 2020 Term Loan Facility |  |  |  |  |
Schedule of Long Term And Short Term Debt Instruments [Line Items] |  |  |  |  |
Aggregate principal amount |  | $ 850,000,000 | 850,000,000.0 | 850,000,000.0 |
Proceeds from line of credit |  | $ 850,000,000 |  |  |
Debt outstanding |  |  | $ 850,000,000.0 | $ 850,000,000.0 |
Interest rate |  |  | 0.98% | 0.98% |
Expensed debt issuance costs (less than) |  |  | $ 100,000 | $ 100,000 |

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- Definition Amount of amortization expense attributable to debt issuance costs. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(8)) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1F -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495355-112611 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28555-108399 + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123466204&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used. + References No definition available. + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=99376301&loc=d3e1336-112600 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=99376301&loc=d3e1314-112600 + Details
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