Additional transitional company contribution to employee 401(k) plans for certain employees.

No definition available.

Name:	a_Transitionalcompanycontributiontoemployee401k
Namespace Prefix:	a_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 70
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480794/715-70-50-1

+ Details

Name:	us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Name:	us-gaap_DefinedContributionPlanDisclosureLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage employer matches of the employee's percentage contribution matched.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RetirementPlanSponsorLocationAxis=us-gaap_ForeignPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RetirementPlanSponsorLocationAxis=country_US
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS Defined Contribution (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Defined Contribution Plan Disclosure [Line Items]
Maximum employer matching contribution in the 401(k) plan (in hundredths)	6.00%
Maximum employee contribution to 401(k)	50.00%
Defined contribution plan expense	$ 97	$ 98	$ 93
401(k) Additional company contribution
Defined Contribution Plan Disclosure [Line Items]
Transitional company contribution to employee 401(k)	4.00%
401(k) Additional company contribution \| 3 Percent
Defined Contribution Plan Disclosure [Line Items]
Transitional company contribution to employee 401(k)	3.00%
401(k) Additional company contribution \| 5 Percent
Defined Contribution Plan Disclosure [Line Items]
Transitional company contribution to employee 401(k)	5.00%
Foreign Plan
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan expense	$ 51	51	47
UNITED STATES
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan expense	$ 46	$ 47	$ 46