v3.26.1
Loss Per Share - Schedule of Loss Per Share, Basic and Diluted (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Jul. 02, 2026
Jun. 26, 2025
Jul. 02, 2026
Jun. 26, 2025
Earnings Per Share [Abstract]        
Net loss attributable to NCM, Inc. (in millions) $ (9.9) $ (10.7) $ (38.6) $ (41.4)
Weighted average shares outstanding:        
Basic (in shares) 93,696,124 93,978,031 93,452,698 94,681,546
Add: Dilutive effect of stock options, restricted stock and exchangeable membership units (in shares) 0 0 0 0
Diluted (in shares) 93,696,124 93,978,031 93,452,698 94,681,546
Loss per NCM, Inc. share:        
Basic (in usd per share) $ (0.11) $ (0.11) $ (0.41) $ (0.44)
Diluted (in usd per share) $ (0.11) $ (0.11) $ (0.41) $ (0.44)