v3.19.3.a.u2
Document and Entity Information
Jan. 29, 2020
Document And Entity Information [Line Items]  
Amendment Flag false
Entity Central Index Key 0001120193
Document Type 8-K
Document Period End Date Jan. 29, 2020
Entity Registrant Name Nasdaq, Inc.
Entity Incorporation State Country Code DE
Entity File Number 001-38855
Entity Tax Identification Number 52-1165937
Entity Address, Address Line One 151 W. 42nd Street
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10036
City Area Code 212
Local Phone Number 401 8700
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Common Stock .01parvaluepershare [Member]  
Document And Entity Information [Line Items]  
Security 12b Title Common Stock, $0.01 par value per share
Trading Symbol NDAQ
Security Exchange Name NASDAQ
One Point Seven Five Percent Senior Notes Due 2029 [Member]  
Document And Entity Information [Line Items]  
Security 12b Title 1.75% Senior Notes due 2029
Trading Symbol NDAQ29
Security Exchange Name NASDAQ
Three Point Eight Seven Five Percent Senior Notes Due 2021 [Member]  
Document And Entity Information [Line Items]  
Security 12b Title 3.875% Senior Notes due 2021
Trading Symbol NDAQ21
Security Exchange Name NASDAQ
One Point Seven Five Percent Senior Note Due 2023 [Member]  
Document And Entity Information [Line Items]  
Security 12b Title 1.750% Senior Notes due 2023
Trading Symbol NDAQ23
Security Exchange Name NASDAQ