Document and Entity Information Document - USD ($)	12 Months Ended
	Dec. 31, 2022	Feb. 02, 2023	Jun. 30, 2022
Cover [Abstract]
Amendment Flag	false
Entity Central Index Key	0000054480
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Public Float			$ 0
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Document Transition Report	false
Entity File Number	1-4717
Entity Registrant Name	KANSAS CITY SOUTHERN
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	87-3883291
Entity Address, Address Line One	427 West 12th Street
Entity Address, City or Town	Kansas City
Entity Address, State or Province	MO
Entity Address, Postal Zip Code	64105
City Area Code	816
Local Phone Number	983.1303
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	Yes
Entity Current Reporting Status	No
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
ICFR Auditor Attestation Flag	true
Entity Common Stock, Shares Outstanding		100
Documents Incorporated by Reference	Portions of the registrant’s subsequent amendment to the Form 10-K to be filed within 120 days of December 31, 2022 are incorporated by reference in this Annual Report on Form 10-K in response to Part III, Items 10, 11, 12, 13 and 14.