Quarterly report pursuant to Section 13 or 15(d)

Other Intangible Assets - Components of Gross and Net Acquired Intangible Assets (Details)

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Other Intangible Assets - Components of Gross and Net Acquired Intangible Assets (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Sep. 30, 2017
Mar. 25, 2017
Acquired Indefinite-lived Intangible Assets [Line Items]      
Gross $ 233,100 $ 201,100 $ 170,500
Accumulated Amortization (64,400) (57,800) (51,900)
Accumulated Impairment (27,200) (27,200) (27,200)
Net Carrying Value 141,530 116,067 91,424
Marketing-related intangible assets      
Acquired Indefinite-lived Intangible Assets [Line Items]      
Gross 87,500 79,600 77,600
Accumulated Amortization (13,400) (12,700) (11,700)
Accumulated Impairment (26,000) (26,000) (26,000)
Net Carrying Value 48,100 40,900 39,900
Other acquired intangible assets      
Acquired Indefinite-lived Intangible Assets [Line Items]      
Gross 29,900 29,900 28,600
Accumulated Amortization (13,500) (12,900) (12,200)
Accumulated Impairment (1,200) (1,200) (1,200)
Net Carrying Value 15,200 15,800 15,200
Amortizable | Marketing-related intangible assets      
Acquired Indefinite-lived Intangible Assets [Line Items]      
Gross 16,900 16,900 14,900
Accumulated Amortization (13,400) (12,700) (11,700)
Accumulated Impairment 0 0 0
Net Carrying Value 3,500 4,200 3,200
Amortizable | Customer-related intangible assets      
Acquired Indefinite-lived Intangible Assets [Line Items]      
Gross 115,700 91,600 64,300
Accumulated Amortization (37,500) (32,200) (28,000)
Accumulated Impairment 0 0
Net Carrying Value 78,200 59,400 36,300
Amortizable | Other acquired intangible assets      
Acquired Indefinite-lived Intangible Assets [Line Items]      
Gross 22,100 22,100 20,800
Accumulated Amortization (13,500) (12,900) (12,200)
Accumulated Impairment 0 0
Net Carrying Value 8,600 9,200 8,600
Nonamortizable | Marketing-related intangible assets      
Acquired Indefinite-lived Intangible Assets [Line Items]      
Gross 70,600 62,700 62,700
Accumulated Amortization 0 0 0
Accumulated Impairment (26,000) (26,000) (26,000)
Net Carrying Value 44,600 36,700 36,700
Nonamortizable | Other acquired intangible assets      
Acquired Indefinite-lived Intangible Assets [Line Items]      
Gross 7,800 7,800 7,800
Accumulated Amortization 0 0
Accumulated Impairment (1,200) (1,200) (1,200)
Net Carrying Value $ 6,600 $ 6,600 $ 6,600