Annual report pursuant to Section 13 and 15(d)

Other Intangible Assets - Additional Information (Details)

v3.19.3
Other Intangible Assets - Additional Information (Details)
$ in Millions
 3 Months Ended 12 Months Ended 15 Months Ended
Mar. 30, 2019
USD ($)
customer
Dec. 24, 2016
USD ($)
Sep. 28, 2019
USD ($)
Sep. 29, 2018
USD ($)
Sep. 30, 2017
USD ($)
Jun. 30, 2018
USD ($)
Feb. 28, 2019
Feb. 01, 2019
Finite-Lived Intangible Assets [Line Items]                
Number of retail customers that exited | customer 1              
Amortization expense for intangibles     $ 14.5 $ 12.7 $ 8.8      
Estimated annual amortization expense related to acquired intangible assets, 2020     12.0          
Estimated annual amortization expense related to acquired intangible assets, 2021     12.0          
Estimated annual amortization expense related to acquired intangible assets, 2022     12.0          
Estimated annual amortization expense related to acquired intangible assets, 2023     12.0          
Estimated annual amortization expense related to acquired intangible assets, 2024     12.0          
Pet Segment                
Finite-Lived Intangible Assets [Line Items]                
Impairment charge     $ 2.5          
Minimum                
Finite-Lived Intangible Assets [Line Items]                
Useful life     3 years          
Maximum                
Finite-Lived Intangible Assets [Line Items]                
Useful life     25 years          
Marketing-Related Intangible Assets                
Finite-Lived Intangible Assets [Line Items]                
Other intangible assets, net $ 1.0              
Marketing-Related Intangible Assets | Weighted Average                
Finite-Lived Intangible Assets [Line Items]                
Useful life     4 years          
Customer-Related Intangible Assets                
Finite-Lived Intangible Assets [Line Items]                
Other intangible assets, net $ 9.9              
Customer-Related Intangible Assets | Weighted Average                
Finite-Lived Intangible Assets [Line Items]                
Useful life     9 years          
Other Acquired Intangible Assets | Weighted Average                
Finite-Lived Intangible Assets [Line Items]                
Useful life     10 years          
K&H, Bell Nursery, and General Pet Supply | Marketing-Related Intangible Assets                
Finite-Lived Intangible Assets [Line Items]                
Other intangible assets, net           $ 9.6    
K&H, Bell Nursery, and General Pet Supply | Customer-Related Intangible Assets                
Finite-Lived Intangible Assets [Line Items]                
Other intangible assets, net           36.7    
K&H, Bell Nursery, and General Pet Supply | Other Acquired Intangible Assets                
Finite-Lived Intangible Assets [Line Items]                
Other intangible assets, net           $ 3.3    
Segrest Inc. | Marketing-Related Intangible Assets                
Finite-Lived Intangible Assets [Line Items]                
Other intangible assets, net   $ 2.0            
Segrest Inc. | Customer-Related Intangible Assets                
Finite-Lived Intangible Assets [Line Items]                
Other intangible assets, net   27.3            
Segrest Inc. | Other Acquired Intangible Assets                
Finite-Lived Intangible Assets [Line Items]                
Other intangible assets, net   $ 1.3            
Arden Companies                
Finite-Lived Intangible Assets [Line Items]                
Percent of investment purchased 55.00%           55.00% 55.00%