Quarterly report pursuant to Section 13 or 15(d)

Revenue - Narrative (Details)

v3.19.3
Revenue - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 28, 2019
Sep. 29, 2018
Sep. 28, 2019
Sep. 29, 2018
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]        
Revenue recognized included in contract liability balance $ 5.1 $ 6.3 $ 15.7 $ 6.3
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: (nil)        
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]        
Remaining performance obligation $ 175.0   $ 175.0  
Period of recognition 3 months   3 months