Annual report pursuant to Section 13 and 15(d)

Revenue Recognition - Schedule of Disaggregation of Revenue (Details)

v3.24.0.1
Revenue Recognition - Schedule of Disaggregation of Revenue (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 30, 2023
Dec. 31, 2022
Jan. 01, 2022
Disaggregation of Revenue [Line Items]      
Revenue $ 1,066.4 $ 1,019.5 $ 750.1
Product revenues      
Disaggregation of Revenue [Line Items]      
Revenue 909.8 890.9 636.8
Service revenues      
Disaggregation of Revenue [Line Items]      
Revenue 156.6 128.6 113.3
Eliminations      
Disaggregation of Revenue [Line Items]      
Revenue (44.3) (50.3) (33.4)
Janus North America | Operating Segments      
Disaggregation of Revenue [Line Items]      
Revenue 1,028.4 994.3 714.9
Janus North America | Operating Segments | Self Storage-New Construction      
Disaggregation of Revenue [Line Items]      
Revenue 336.5 289.4 246.7
Janus North America | Operating Segments | Self Storage-R3      
Disaggregation of Revenue [Line Items]      
Revenue 326.9 304.1 210.2
Janus North America | Operating Segments | Commercial and Others      
Disaggregation of Revenue [Line Items]      
Revenue 365.0 400.8 258.0
Janus North America | Operating Segments | Product revenues transferred at a point in time | Product revenues      
Disaggregation of Revenue [Line Items]      
Revenue 784.0 795.0 544.9
Janus North America | Operating Segments | Service revenues transferred over time | Product revenues      
Disaggregation of Revenue [Line Items]      
Revenue 122.4 102.8 86.8
Janus North America | Operating Segments | Service revenues transferred over time | Service revenues      
Disaggregation of Revenue [Line Items]      
Revenue 122.0 96.5 83.2
Janus International | Operating Segments      
Disaggregation of Revenue [Line Items]      
Revenue 82.3 75.5 68.6
Janus International | Operating Segments | Self Storage-New Construction      
Disaggregation of Revenue [Line Items]      
Revenue 73.2 57.2 51.7
Janus International | Operating Segments | Self Storage-R3      
Disaggregation of Revenue [Line Items]      
Revenue 9.1 18.3 16.9
Janus International | Operating Segments | Product revenues transferred at a point in time      
Disaggregation of Revenue [Line Items]      
Revenue 46.3 43.4 38.5
Janus International | Operating Segments | Service revenues transferred over time      
Disaggregation of Revenue [Line Items]      
Revenue $ 36.0 $ 32.1 $ 30.1