Other Intangible Assets - Components of Gross and Net Acquired Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 30, 2017	Sep. 30, 2017	Dec. 24, 2016
Acquired Indefinite-lived Intangible Assets [Line Items]
Gross	$ 201,100	$ 201,100	$ 170,500
Accumulated Amortization	(60,100)	(57,800)	(50,400)
Accumulated Impairment	(27,200)	(27,200)	(27,200)
Net Carrying Value	113,726	116,067	92,851
Marketing-related intangible assets
Acquired Indefinite-lived Intangible Assets [Line Items]
Gross	79,600	79,600	77,700
Accumulated Amortization	(13,100)	(12,700)	(11,500)
Accumulated Impairment	(26,000)	(26,000)	(26,000)
Net Carrying Value	40,500	40,900	40,200
Other acquired intangible assets
Acquired Indefinite-lived Intangible Assets [Line Items]
Gross	29,900	29,900	28,500
Accumulated Amortization	(13,200)	(12,900)	(11,900)
Accumulated Impairment	(1,200)	(1,200)	(1,200)
Net Carrying Value	15,500	15,800	15,400
Amortizable | Marketing-related intangible assets
Acquired Indefinite-lived Intangible Assets [Line Items]
Gross	16,900	16,900	14,900
Accumulated Amortization	(13,100)	(12,700)	(11,500)
Accumulated Impairment	0	0	0
Net Carrying Value	3,800	4,200	3,400
Amortizable | Customer-related intangible assets
Acquired Indefinite-lived Intangible Assets [Line Items]
Gross	91,600	91,600	64,300
Accumulated Amortization	(33,900)	(32,200)	(27,000)
Accumulated Impairment	0	0	0
Net Carrying Value	57,700	59,400	37,300
Amortizable | Other acquired intangible assets
Acquired Indefinite-lived Intangible Assets [Line Items]
Gross	22,100	22,100	20,800
Accumulated Amortization	(13,200)	(12,900)	(11,900)
Accumulated Impairment	0	0	0
Net Carrying Value	8,900	9,200	8,900
Nonamortizable | Marketing-related intangible assets
Acquired Indefinite-lived Intangible Assets [Line Items]
Gross	62,700	62,700	62,800
Accumulated Amortization	0	0	0
Accumulated Impairment	(26,000)	(26,000)	(26,000)
Net Carrying Value	36,700	36,700	36,800
Nonamortizable | Other acquired intangible assets
Acquired Indefinite-lived Intangible Assets [Line Items]
Gross	7,800	7,800	7,700
Accumulated Amortization	0	0	0
Accumulated Impairment	(1,200)	(1,200)	(1,200)
Net Carrying Value	$ 6,600	$ 6,600	$ 6,500