Summary of Significant Accounting Policies (Policies)	6 Months Ended
Apr. 30, 2020
Accounting Policies [Abstract]
Use of Estimates	Use of Estimates. To prepare financial statements in conformity with U.S. GAAP, management must make estimates and assumptions that affect the amounts reported in the unaudited condensed consolidated financial statements and accompanying notes. Actual results could differ from these estimates and may result in material effects on the Company’s operating results and financial position. In addition, the Company has considered the potential impact of the COVID-19 pandemic on the business operations. Although no material impairment or other effects have been identified to date related to the COVID-19 pandemic, there is substantial uncertainty in the nature and degree of its continued effects over time. This uncertainty affects management’s accounting estimates and assumptions, which could result in greater variability in a variety of areas that depend on these estimates and assumptions as additional events and information are known.
Principles of Consolidation	Principles of Consolidation. The unaudited condensed consolidated financial statements include the accounts of the Company and all of its subsidiaries. All significant intercompany accounts and transactions have been eliminated.
Fiscal Year End	Fiscal Year End. The Company’s fiscal year generally ends on the Saturday nearest to October 31 and consists of 52 weeks, with the exception that approximately every five years, the Company has a 53-week year. When a 53-week year occurs, the Company includes the additional week in the first quarter to realign fiscal quarters with calendar quarters. Fiscal 2020 and 2019 are both 52-week years. Fiscal 2020 will end on October 31, 2020. Fiscal 2019 ended on November 2, 2019. For presentation purposes, the unaudited condensed consolidated financial statements and accompanying notes refer to the closest calendar month end.
Leases	Leases. In February 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2016-02, "Leases (Topic 842)," which supersedes the previous lease requirements in Topic 840. Topic 842 was subsequently amended by several ASUs. The new guidance requires a lessee to recognize a right-of-use (ROU) asset and a lease liability for most operating leases in the consolidated balance sheets. These ASUs also made minor changes to lessor accounting and aligns key aspects of the lessor accounting model with the new revenue recognition guidance. The new standard did not have a material impact on the unaudited condensed consolidated financial statements for arrangements in which the Company is the lessor. The Company adopted Topic 842 at the beginning of fiscal 2020 using the modified retrospective method without restatement of comparative periods. The Company elected the package of practical expedients permitted under the transition guidance, which allows the carryforward of historical assessments about (1) lease classification, (2) whether a contract is or contains a lease, and (3) which costs qualify as initial direct costs for leases that existed prior to the adoption. The Company did not elect either the use of hindsight or land easements practical expedients available in transition. The adoption of the standard did not have an impact on the Company’s beginning retained earnings, results of operations, or cash flows. The operating lease liabilities equaled the present value of the remaining Topic 840 minimum rental payments for those leases, discounted at the Company’s incremental borrowing rate as of the date of adoption. The ROU assets were measured at the amount of the related lease liabilities plus any prepaid rental payments and less any unamortized lease incentives such as tenant improvement allowances. The Company recognized ROU assets of $475 million and operating lease liabilities of $540 million on the unaudited condensed consolidated balance sheets. After adoption, the Company determines if a contract is or contains a lease at inception. ROU assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make payments arising from the lease. Lease liabilities for operating and finance leases are recognized at the lease commencement date based on the present value of future lease payments over the remaining lease terms. ROU assets are derived from the carrying amount of the related lease liability plus any prepaid lease payments, less any lease incentives such as tenant improvement allowances. The Company primarily uses its incremental borrowing rate, determined as of the lease commencement date, to measure the present value of its future lease payments, as the rate implicit in the lease is generally not readily determinable. The Company uses a benchmark senior unsecured yield curve for debt instruments and considers specific credit quality, market conditions, tenor of lease arrangements, and quality of collateral to determine the incremental borrowing rate. Operating lease expense is recognized on a straight-line basis over the lease term of each lease. Variable payments, such as for maintenance, property taxes or insurance, are recognized on our unaudited condensed consolidated statements of operations as incurred. The Company has adopted both (1) the practical expedient to not separate lease from non-lease components and (2) the short-term lease exemption. The Company has elected the practical expedient to not separate lease from non-lease components for all classes of underlying assets and the short-term lease exemption for all classes of underlying assets except real estate leases, with terms 12 months or less.
Revenue Recognition	Revenue Recognition. In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Codification (ASC 606), "Revenue from Contracts with Customers," which the Company adopted in fiscal 2019. See Note 2. Summary of Significant Accounting Policies in the Company’s Annual Report on Form 10-K for the year ended October 31, 2019 for revenue recognition policies under the new revenue guidance ASC 606.
Derivatives	In the first quarter of 2020, the Company adopted ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedge Activities, which amends the hedge accounting recognition and presentation requirements of ASC 815. Pursuant to the provisions of ASU 2017-12, the Company is not required to separately measure and report hedge ineffectiveness, which was previously recorded in Other income (expense), net in our unaudited condensed consolidated statements of operations. Also, prior to the adoption of ASU 2017-12, the forward point components of the Cash Flow hedges were excluded from assessing effectiveness of the hedging relationship and were recorded on the unaudited condensed consolidated statements of operations in other income (expense), net. Upon adoption of ASU 2017-12, the Company presents the related earning impact of the Cash Flow hedges in the same income statement section as the hedged items. Also, adoption of the guidance did not impact opening retained earnings or have a material impact on our financial statements.

Summary of Significant Accounting Policies (Policies)

6 Months Ended

Apr. 30, 2020

Use of Estimates. To prepare financial statements in conformity with U.S. GAAP, management must make estimates and assumptions that affect the amounts reported in the unaudited condensed consolidated financial statements and accompanying notes. Actual results could differ from these estimates and may result in material effects on the Company’s operating results and financial position. In addition, the Company has considered the potential impact of the COVID-19 pandemic on the business operations. Although no material impairment or other effects have been identified to date related to the COVID-19 pandemic, there is substantial uncertainty in the nature and degree of its continued effects over time. This uncertainty affects management’s accounting estimates and assumptions, which could result in greater variability in a variety of areas that depend on these estimates and assumptions as additional events and information are known.

Principles of Consolidation

Principles of Consolidation. The unaudited condensed consolidated financial statements include the accounts of the Company and all of its subsidiaries. All significant intercompany accounts and transactions have been eliminated.

Fiscal Year End

Fiscal Year End. The Company’s fiscal year generally ends on the Saturday nearest to October 31 and consists of 52 weeks, with the exception that approximately every five years, the Company has a 53-week year. When a 53-week year occurs, the Company includes the additional week in the first quarter to realign fiscal quarters with calendar quarters. Fiscal 2020 and 2019 are both 52-week years. Fiscal 2020 will end on October 31, 2020. Fiscal 2019 ended on November 2, 2019. For presentation purposes, the unaudited condensed consolidated financial statements and accompanying notes refer to the closest calendar month end.

Leases

Leases. In February 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2016-02, "Leases (Topic 842)," which supersedes the previous lease requirements in Topic 840. Topic 842 was subsequently amended by several ASUs. The new guidance requires a lessee to recognize a right-of-use (ROU) asset and a lease liability for most operating leases in the consolidated balance sheets. These ASUs also made minor changes to lessor accounting and aligns key aspects of the lessor accounting model with the new

revenue recognition guidance. The new standard did not have a material impact on the unaudited condensed consolidated financial statements for arrangements in which the Company is the lessor.

The Company adopted Topic 842 at the beginning of fiscal 2020 using the modified retrospective method without restatement of comparative periods. The Company elected the package of practical expedients permitted under the transition guidance, which allows the carryforward of historical assessments about (1) lease classification, (2) whether a contract is or contains a lease, and (3) which costs qualify as initial direct costs for leases that existed prior to the adoption. The Company did not elect either the use of hindsight or land easements practical expedients available in transition.

The adoption of the standard did not have an impact on the Company’s beginning retained earnings, results of operations, or cash flows. The operating lease liabilities equaled the present value of the remaining Topic 840 minimum rental payments for those leases, discounted at the Company’s incremental borrowing rate as of the date of adoption. The ROU assets were measured at the amount of the related lease liabilities plus any prepaid rental payments and less any unamortized lease incentives such as tenant improvement allowances. The Company recognized ROU assets of $475 million and operating lease liabilities of $540 million on the unaudited condensed consolidated balance sheets.

After adoption, the Company determines if a contract is or contains a lease at inception. ROU assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make payments arising from the lease. Lease liabilities for operating and finance leases are recognized at the lease commencement date based on the present value of future lease payments over the remaining lease terms. ROU assets are derived from the carrying amount of the related lease liability plus any prepaid lease payments, less any lease incentives such as tenant improvement allowances. The Company primarily uses its incremental borrowing rate, determined as of the lease commencement date, to measure the present value of its future lease payments, as the rate implicit in the lease is generally not readily determinable. The Company uses a benchmark senior unsecured yield curve for debt instruments and considers specific credit quality, market conditions, tenor of lease arrangements, and quality of collateral to determine the incremental borrowing rate.

Operating lease expense is recognized on a straight-line basis over the lease term of each lease. Variable payments, such as for maintenance, property taxes or insurance, are recognized on our unaudited condensed consolidated statements of operations as incurred.

The Company has adopted both (1) the practical expedient to not separate lease from non-lease components and (2) the short-term lease exemption. The Company has elected the practical expedient to not separate lease from non-lease components for all classes of underlying assets and the short-term lease exemption for all classes of underlying assets except real estate leases, with terms 12 months or less.

Revenue Recognition

Revenue Recognition. In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Codification (ASC 606), "Revenue from Contracts with Customers," which the Company adopted in fiscal 2019. See Note 2. Summary of Significant Accounting Policies in the Company’s Annual Report on Form 10-K for the year ended October 31, 2019 for revenue recognition policies under the new revenue guidance ASC 606.

Derivatives

In the first quarter of 2020, the Company adopted ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedge Activities, which amends the hedge accounting recognition and presentation requirements of ASC 815. Pursuant to the provisions of ASU 2017-12, the Company is not required to separately measure and report hedge ineffectiveness, which was previously recorded in Other income (expense), net in our unaudited condensed consolidated statements of operations. Also, prior to the adoption of ASU 2017-12, the forward point components of the Cash Flow hedges were excluded from assessing effectiveness of the hedging relationship and were recorded on the unaudited condensed consolidated statements of operations in other income (expense), net. Upon adoption of ASU 2017-12, the Company presents the related earning impact of the Cash Flow hedges in the same income statement section as the hedged items. Also, adoption of the guidance did not impact opening retained earnings or have a material impact on our financial statements.