Quarterly report pursuant to Section 13 or 15(d)

Other Intangible Assets - Narrative (Details)

v3.7.0.1
Other Intangible Assets - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Mar. 25, 2017
Sep. 24, 2016
Mar. 26, 2016
Mar. 25, 2017
Mar. 26, 2016
Finite-Lived Intangible Assets [Line Items]          
Indefinite-lived intangible assets, impairment charge   $ 1.8      
Amortization expense for intangibles $ 1.4   $ 1.2 $ 2.9 $ 2.2
Estimated annual amortization expense related to acquired intangible assets, 2017 5.0     5.0  
Estimated annual amortization expense related to acquired intangible assets, 2018 5.0     5.0  
Estimated annual amortization expense related to acquired intangible assets, 2019 5.0     5.0  
Estimated annual amortization expense related to acquired intangible assets, 2020 5.0     5.0  
Estimated annual amortization expense related to acquired intangible assets, 2021 $ 5.0     $ 5.0  
Minimum          
Finite-Lived Intangible Assets [Line Items]          
Weighted average remaining lives of acquired intangible assets       4 years  
Maximum          
Finite-Lived Intangible Assets [Line Items]          
Weighted average remaining lives of acquired intangible assets       25 years  
Marketing-Related Intangible Assets          
Finite-Lived Intangible Assets [Line Items]          
Weighted average remaining lives of acquired intangible assets       6 years  
Customer-Related Intangible Assets          
Finite-Lived Intangible Assets [Line Items]          
Weighted average remaining lives of acquired intangible assets       11 years  
Other Acquired Intangible Assets          
Finite-Lived Intangible Assets [Line Items]          
Weighted average remaining lives of acquired intangible assets       13 years