Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2022	Jan. 31, 2023	Jun. 30, 2022
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-36636
Entity Registrant Name	CITIZENS FINANCIAL GROUP INC/RI
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	05-0412693
Entity Address, Address Line One	One Citizens Plaza
Entity Address, City or Town	Providence
Entity Address, State or Province	RI
Entity Address, Postal Zip Code	02903
City Area Code	203
Local Phone Number	900-6715
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 Public Float			$ 17,591,222,864
Entity Common Stock, Shares Outstanding		484,106,460
Documents Incorporated by Reference	Portions of Citizens Financial Group, Inc.’s proxy statement to be filed with the United States Securities and Exchange Commission in connection with Citizens Financial Group, Inc.’s 2023 annual meeting of stockholders (the “Proxy Statement”) are incorporated by reference into Part III hereof. Such Proxy Statement will be filed within 120 days of Citizens Financial Group, Inc.’s fiscal year ended December 31, 2022.
Entity Central Index Key	0000759944
Amendment Flag	false
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Common Stock
Document Information [Line Items]
Title of 12(b) Security	Common stock, $0.01 par value per share
Trading Symbol	CFG
Security Exchange Name	NYSE
Series D
Document Information [Line Items]
Title of 12(b) Security	Depositary Shares, each representing a 1/40th interest in a share of 6.350% Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series D
Trading Symbol	CFG PrD
Security Exchange Name	NYSE
Series E
Document Information [Line Items]
Title of 12(b) Security	Depositary Shares, each representing a 1/40th interest in a share of 5.000% Fixed-Rate Non-Cumulative Perpetual Preferred Stock, Series E
Trading Symbol	CFG PrE
Security Exchange Name	NYSE