Document And Entity Information
6 Months Ended
Jun. 27, 2019
Document And Entity Information [Abstract]  
Document Type 10-Q
Amendment Flag false
Document Period End Date Jun. 27, 2019
Document Fiscal Year Focus 2019
Document Fiscal Period Focus Q2
Entity Registrant Name National CineMedia, Inc.
Entity Central Index Key 0001377630
Entity Filer Category Accelerated Filer
Entity Emerging Growth Company false
Entity Small Business false
Entity Current Reporting Status Yes
Current Fiscal Year End Date --12-26
Entity Shell Company false
Entity Common Stock, Shares Outstanding 78,973,707