Quarterly report [Sections 13 or 15(d)]

Revenue Recognition - Schedule of Disaggregation of Revenue (Details)

v3.25.2
Revenue Recognition - Schedule of Disaggregation of Revenue (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 28, 2025
Jun. 29, 2024
Jun. 28, 2025
Jun. 29, 2024
Disaggregation of Revenue [Line Items]        
Total revenue $ 228.1 $ 248.4 $ 438.6 $ 502.9
Product revenues        
Disaggregation of Revenue [Line Items]        
Total revenue 178.1 205.8 344.4 420.9
Service revenues        
Disaggregation of Revenue [Line Items]        
Total revenue 50.0 42.6 94.2 82.0
Operating Segments | Janus North America        
Disaggregation of Revenue [Line Items]        
Total revenue 200.3 230.8 391.0 471.3
Operating Segments | Janus North America | Product revenues        
Disaggregation of Revenue [Line Items]        
Total revenue 163.2 195.4 319.2 402.3
Operating Segments | Janus North America | Service revenues        
Disaggregation of Revenue [Line Items]        
Total revenue 37.1 35.4 71.8 69.0
Operating Segments | Janus North America | Self-storage - new construction        
Disaggregation of Revenue [Line Items]        
Total revenue 68.8 95.5 132.6 199.7
Operating Segments | Janus North America | Self-storage - R3        
Disaggregation of Revenue [Line Items]        
Total revenue 49.6 58.7 108.0 127.0
Operating Segments | Janus North America | Commercial and others        
Disaggregation of Revenue [Line Items]        
Total revenue 81.9 76.6 150.4 144.6
Operating Segments | Janus North America | Product revenues transferred at a point in time | Product revenues        
Disaggregation of Revenue [Line Items]        
Total revenue 150.1 168.8 293.2 343.0
Operating Segments | Janus North America | Service revenues transferred over time | Product revenues        
Disaggregation of Revenue [Line Items]        
Total revenue 13.1 26.6 26.0 59.3
Operating Segments | Janus North America | Service revenues transferred over time | Service revenues        
Disaggregation of Revenue [Line Items]        
Total revenue 37.1 35.4 71.8 69.0
Operating Segments | Janus International        
Disaggregation of Revenue [Line Items]        
Total revenue 28.4 18.0 49.6 32.7
Operating Segments | Janus International | Product revenues        
Disaggregation of Revenue [Line Items]        
Total revenue 15.5 10.8 27.2 19.8
Operating Segments | Janus International | Service revenues        
Disaggregation of Revenue [Line Items]        
Total revenue 12.9 7.2 22.4 12.9
Operating Segments | Janus International | Self-storage - new construction        
Disaggregation of Revenue [Line Items]        
Total revenue 25.1 15.2 45.0 27.6
Operating Segments | Janus International | Self-storage - R3        
Disaggregation of Revenue [Line Items]        
Total revenue 3.3 2.8 4.6 5.1
Operating Segments | Janus International | Product revenues transferred at a point in time        
Disaggregation of Revenue [Line Items]        
Total revenue 15.5 10.8 27.2 19.8
Operating Segments | Janus International | Service revenues transferred over time        
Disaggregation of Revenue [Line Items]        
Total revenue 12.9 7.2 22.4 12.9
Eliminations        
Disaggregation of Revenue [Line Items]        
Total revenue $ (0.6) $ (0.4) $ (2.0) $ (1.1)