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Other Intangible Assets - Components of Gross and Net Acquired Intangible Assets (Detail) - USD ($) $ in Thousands | Sep. 26, 2015 | Sep. 27, 2014
--- | --- | ---
Acquired Indefinite-lived Intangible Assets [Line Items] |  |
Gross | $ 144,100 | $ 145,000
Accumulated Amortization | (43,200) | (38,900)
Accumulated Impairment | (25,400) | (18,100)
Net Carrying Value | 75,460 | 87,997
Marketing-Related Intangible Assets [Member] |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |
Gross | 73,700 | 75,100
Accumulated Amortization | (10,400) | (9,900)
Accumulated Impairment | (24,200) | (16,900)
Net Carrying Value | 39,100 | 48,300
Other Acquired Intangible Assets [Member] |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |
Gross | 27,100 | 27,100
Accumulated Amortization | (10,500) | (8,800)
Accumulated Impairment | (1,200) | (1,200)
Net Carrying Value | 15,400 | 17,100
Amortizable [Member] | Marketing-Related Intangible Assets [Member] |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |
Gross | 14,100 | 15,500
Accumulated Amortization | (10,400) | (9,900)
Accumulated Impairment | 0 | 0
Net Carrying Value | 3,700 | 5,600
Amortizable [Member] | Customer-Related Intangible Assets [Member] |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |
Gross | 43,300 | 42,800
Accumulated Amortization | (22,300) | (20,200)
Accumulated Impairment | 0 | 0
Net Carrying Value | 21,000 | 22,600
Amortizable [Member] | Other Acquired Intangible Assets [Member] |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |
Gross | 19,300 | 19,400
Accumulated Amortization | (10,500) | (8,800)
Accumulated Impairment | 0 | 0
Net Carrying Value | 8,800 | 10,600
Nonamortizable [Member] | Marketing-Related Intangible Assets [Member] |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |
Gross | 59,600 | 59,600
Accumulated Amortization | 0 | 0
Accumulated Impairment | (24,200) | (16,900)
Net Carrying Value | 35,400 | 42,700
Nonamortizable [Member] | Other Acquired Intangible Assets [Member] |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |
Gross | 7,800 | 7,700
Accumulated Amortization | 0 | 0
Accumulated Impairment | (1,200) | (1,200)
Net Carrying Value | $ 6,600 | $ 6,500

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