| Document and Entity Information | Nov. 04, 2020 |
| Cover [Abstract] | |
| Entity Registrant Name | ROCKWELL AUTOMATION, INC |
| Amendment Flag | false |
| Entity Central Index Key | 0001024478 |
| Document Type | 8-K |
| Document Period End Date | Nov. 4, 2020 |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 1-12383 |
| Entity Tax Identification Number | 25-1797617 |
| Entity Address, Address Line One | 1201 South Second Street |
| Entity Address, City or Town | Milwaukee |
| Entity Address, State or Province | WI |
| Entity Address, Postal Zip Code | 53204 |
| City Area Code | (414) |
| Local Phone Number | 382-2000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock ($1.00 par value) |
| Trading Symbol | ROK |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
