Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Mar. 31, 2024	May 23, 2024	Sep. 29, 2023
Document and Entity Information
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Mar. 31, 2024
Entity File Number	001-40853
Entity Registrant Name	Kyndryl Holdings, Inc
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	86-1185492
Entity Address, Address Line One	One Vanderbilt Avenue, 15th Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10017
City Area Code	212
Local Phone Number	896-2098
Title of 12(b) Security	Common stock, par value $0.01 per share
Trading Symbol	KD
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		230,513,437
Entity Public Float			$ 3.4
Entity Central Index Key	0001867072
Current Fiscal Year End Date	--03-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Amendment Flag	false
Document Financial Statement Error Correction [Flag]	false
Auditor Name	PricewaterhouseCoopers LLP
Auditor Firm ID	238
Auditor Location	New York, New York