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Fair Value Measurements - Schedule of Estimated Fair Value of Assets Measured on a Nonrecurring Basis (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 28, 2013 | Mar. 29, 2014 | Mar. 30, 2013
Assets And Liabilities Carrying Value And Fair Value [Line Items] |  |  |
Intangible asset, Total Gains (Losses) |  | $ (27,100) |
Total Gains (Losses) | (3,100) |  |
Cost-method equity investments, Total Gains (Losses) |  | (3,705) | (1,733)
Fair Value, Measurements, Nonrecurring [Member] |  |  |
Assets And Liabilities Carrying Value And Fair Value [Line Items] |  |  |
Intangible assets |  | 18,272 |
Cost-method equity investments |  | 778 |
Intangible asset, Total Gains (Losses) |  | (27,089) |
Cost-method equity investments, Total Gains (Losses) |  | (3,705) |
Total Gains (Losses) |  | (35,431) |
Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |
Assets And Liabilities Carrying Value And Fair Value [Line Items] |  |  |
Intangible assets |  | 18,272 |
Cost-method equity investments |  | 778 |
Fair Value, Measurements, Nonrecurring [Member] | Property and equipment [Member] |  |  |
Assets And Liabilities Carrying Value And Fair Value [Line Items] |  |  |
Fair Value |  | 1,015 |
Total Gains (Losses) |  | (1,505) |
Fair Value, Measurements, Nonrecurring [Member] | Property and equipment [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |
Assets And Liabilities Carrying Value And Fair Value [Line Items] |  |  |
Fair Value |  | 1,015 |
Fair Value, Measurements, Nonrecurring [Member] | Buildings [Member] |  |  |
Assets And Liabilities Carrying Value And Fair Value [Line Items] |  |  |
Fair Value |  | 1,388 |
Total Gains (Losses) |  | (3,132) |
Fair Value, Measurements, Nonrecurring [Member] | Buildings [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |
Assets And Liabilities Carrying Value And Fair Value [Line Items] |  |  |
Fair Value |  | $ 1,388 |

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- Definition This item represents the total amount of realized and unrealized losses for the period recorded in the statement of income from the measurement of assets on a non-recurring basis. + References No definition available. + Details
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- Definition Fair value portion of investments accounted under the cost method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=29638263&loc=d3e39828-111592 + Details
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- Definition Fair value portion of assets, excluding financial assets, that lack physical substance, having a limited useful life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19190-110258 + Details
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- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16373-109275 + Details
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- Definition The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 35 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=27723805&loc=d3e25351-111560 + Details
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- Definition The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2420-110228 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2921-110230 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 225 -Section 45 -Paragraph 11 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28367520&loc=d3e92212-112881 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Impairment -URI http://asc.fasb.org/extlink&oid=6515133 + Details
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- Definition Fair value portion of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19190-110258 + Details
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