Acquisitions (Purchase Price Allocation) (Details) (USD $)	3 Months Ended
	Dec. 25, 2011	Aug. 17, 2011
Finished Goods Inventory [Member]
Business Acquisition [Line Items]
Business Acquisition, Fair Value Adjustment, Inventory		$ 1,500,000
Raw Material Inventory [Member]
Business Acquisition [Line Items]
Business Acquisition, Fair Value Adjustment, Inventory		700,000
Rudd Lighting, Inc. [Member]
Business Acquisition [Line Items]
Business Acquisition, Purchase Price Allocation, Preliminary Amount, Initial Accounting Incomplete, Assets Acquired (Liabilities Assumed), Net		668,266,000
Business Acquisition, Purchase Price Allocation, Preliminary Amount, Initial Accounting Incomplete, Tangible Assets		118,782,000
Business Acquisition, Purchase Price Allocation, Preliminary Amount, Initial Accounting Incomplete, Other Noncurrent Assets		4,727,000
Business Acquisition, Purchase Price Allocation, Preliminary Amount, Initial Accounting Incomplete, Property, Plant and Equipment		45,946,000
Business Acquisition, Purchase Price Allocation, Preliminary Amount, Initial Accounting Incomplete, Current Assets, Inventory		39,330,000
Business Acquisition, Purchase Price Allocation, Preliminary Amount, Inital Accounting Incomplete, Current Assets, Receivables		25,698,000
Business Acquisition Purchase Price Allocation, Preliminary Amount, Initial Accounting Incomplete, Current Assets, Cash and Cash Equivalents		3,081,000
Business Acquisition, Purchase Price Allocation, Assets Acquired (Liabilities Assumed), Net		668,266,000
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Tangible Assets	(852,000)
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Assets	217,000
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment	(233,000)
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Assets	(375,000)
Tangible assets:
Cash and cash equivalents		3,081,000
Accounts receivable		25,323,000
Inventories		38,869,000
Property and equipment		45,713,000
Other assets		4,944,000
Total tangible assets		117,930,000
Intangible assets:
Goodwill		291,757,000
Business Acquisition, Purchase Price Allocation, Preliminary Amount, Initial Accounting Incomplete, Goodwill		287,431,000
Goodwill, Purchase Accounting Adjustments	4,326,000
Business Acquisition, Purchase Price Allocation, Preliminary Amount, Initial Accounting Incomplete, Intangible Assets		576,351,000
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles	4,326,000
Business Acquisition, Purchase Price Allocation, Intangible Assets		580,677,000
Liabilities assumed:
Business Acquisition, Purchase Price Allocation, Preliminary Amount, Initial Accounting Incomplete, Current Liabilities, Accounts Payable		12,943,000
Accounts payable		12,943,000
Business Acquisition, Purchase Price Allocation, Preliminary Amount, Initial Accounting Incomplete, Current Liabilities, Accrued Liabilities		10,116,000
Accrued expenses and liabilities		10,567,000
Business Acquisition, Purchase Price Allocation, Preliminary Amount, Initial Accounting Incomplete, Warranty Liability		2,600,000
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Warranty	3,023,000
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accrued Expenses	451,000
Warranty liabilities		5,623,000
Business Acquisition, Purchase Price Allocation, Preliminary Amount, Initial Accounting Incomplete, Other Noncurrent Liabilities		1,208,000
Other long-term liabilities		1,208,000
Total liabilities assumed		30,341,000
Cash and cash equivalents		3,081,000
Accounts receivable		25,323,000
Inventories		38,869,000
Property and equipment		45,713,000
Other assets		4,944,000
Total tangible assets		117,930,000
Business Acquisition, Purchase Price Allocation, Preliminary Amount, Initial Accounting Incomplete, Liabilities Assumed		26,867,000
Fair value adjustment, inventory	(461,000)
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Total Liabilities	3,474,000
Developed technology [Member] | Rudd Lighting, Inc. [Member]
Intangible assets:
Business Acquisition, Purchase Price Allocation, Preliminary Amount, Initial Accounting Incomplete, Amortizable Intangible Assets		96,300,000
Intangible assets		96,300,000
Customer relationships [Member] | Rudd Lighting, Inc. [Member]
Intangible assets:
Business Acquisition, Purchase Price Allocation, Preliminary Amount, Initial Accounting Incomplete, Amortizable Intangible Assets		84,820,000
Intangible assets		84,820,000
Trade names [Member] | Rudd Lighting, Inc. [Member]
Intangible assets:
Business Acquisition, Purchase Price Allocation, Preliminary Amount, Initial Accounting Incomplete, Intangible Assets Not Amortizable		82,950,000
Business Acquisition, Purchase Price Allocation, Intangible Assets Not Amortizable		82,950,000
In-process research and development [Member] | Rudd Lighting, Inc. [Member]
Intangible assets:
Intangible assets		15,050,000
Business Acquisition, Purchase Price Allocation, Preliminary Asset, Initial Accounting Incomplete, Amortizable Intangible Assets		15,050,000
Non-compete agreements [Member] | Rudd Lighting, Inc. [Member]
Intangible assets:
Business Acquisition, Purchase Price Allocation, Preliminary Amount, Initial Accounting Incomplete, Amortizable Intangible Assets		9,800,000
Intangible assets		$ 9,800,000