XML 100 R85.htm IDEA: XBRL DOCUMENT
v3.25.3

Investments - Narrative (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Sep. 30, 2024
--- | --- | ---
Investments, Debt and Equity Securities [Abstract] |  |
Equity securities without readily determinable fair value, upward price adjustment, cumulative amount | $ 23.0 | $ 23.0
Equity securities without readily determinable fair value, downward price adjustment and impairment loss, cumulative amount | $ 10.0 | $ 7.0

X
- Definition Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment And Impairment Loss, Cumulative Amount + References No definition available. + Details
Name: | rok_EquitySecuritiesWithoutReadilyDeterminableFairValueDownwardPriceAdjustmentAndImpairmentLossCumulativeAmount
Namespace Prefix: | rok_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of cumulative gain from upward price adjustment on investment in equity security without readily determinable fair value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 321 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479536/321-10-50-3 + Details
Name: | us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentCumulativeAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration