v3.26.1

Cover Page - USD ($) $ in Millions	12 Months Ended
Cover Page - USD ($) $ in Millions	Dec. 31, 2025	Mar. 20, 2026	Jun. 30, 2025
Document Information [Line Items]
Document Type	10-K/A
Document Annual Report	true
Document Period End Date	Dec. 31, 2025
Document Transition Report	false
Entity File Number	000-56273
Entity Registrant Name	Nuveen Global Cities REIT, Inc.
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	82-1419222
Entity Address, Address Line One	730 Third Avenue, 3rd 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	490-9000
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction	false
Entity Shell Company	false
Entity Public Float			$ 0
Amendment Flag	false
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	FY
Entity Central Index Key	0001711799
PCAOB ID	--12-31
Common Class T
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		11,729,524
Common Class S
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		47,894,924
Common Class D
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		7,405,823
Common Class I
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		113,292,244
Common Class N
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		23,454,145

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Local phone number for entity.

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Nuveen Global Cities REIT, Inc. 10-K/A