Acquisition (Business Combination) (Details) $ in Thousands		3 Months Ended				9 Months Ended
	Jan. 12, 2016 USD ($)	Jul. 02, 2016 USD ($)	Apr. 02, 2016 USD ($)	Jan. 02, 2016 USD ($)	Jul. 04, 2015 USD ($)	Jul. 02, 2016 USD ($)	Jul. 04, 2015 USD ($)	Nov. 03, 2015 employee	Sep. 30, 2015 USD ($)
Acquired entity Name
Contingent consideration payment						$ 11,500
Long-term portion of long term debt									$ 618,125
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]
Acquisition-related cost		$ 900			$ 2,800	3,200	$ 8,700
Payments to Acquire Businesses, Net of Cash Acquired						164,191	98,411
Borrowings						670,000	135,000
Contingent Consideration Liability, Fair Value Disclosure		19,497				19,497			13,000
Payments to Business Combination Contingent Consideration, Financing Activities						10,621	0
acquired entity name-Kepware [Domain]
Acquired entity Name
Goodwill, Acquired During Period			$ 77,081
Finite-lived Intangible Assets Acquired			34,500
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]
Payments to Acquire Businesses, Net of Cash Acquired	$ 99,410
Cash Acquired from Acquisition	590
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High		18,000				18,000
Estimated contingent consideration payment in 2017		9,600				9,600
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low		16,900				16,900
Contingent Consideration Liability, Fair Value Disclosure		16,997				16,997
Vuforia Acquisition [Member]
Acquired entity Name
Goodwill, Acquired During Period				$ 23,316
business combination acquired assets and liabilities net (excluding goodwill and other intangible assets)				4,700
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]
Payments to Acquire Businesses, Net of Cash Acquired				64,777
Cash Acquired from Acquisition				4,466
Business Combination, Number of Employees at Acquiree | employee								80
Acquired entity name: ColdLight [Member]
Acquired entity Name
Contingent consideration payment						2,500
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]
Payments to Acquire Businesses, Net of Cash Acquired					98,592
Cash Acquired from Acquisition					1,313
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High		5,000				5,000
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low					$ 3,800		$ 3,800
Contingent Consideration Liability, Fair Value Disclosure		2,500				2,500
acquired entity name-ThingWorx [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]
Contingent Consideration Liability, Fair Value Disclosure		0				0
ThingWorx [Member]
Acquired entity Name
Contingent consideration payment		9,000				$ 9,000
Computer Software, Intangible Asset [Member]
Acquired entity Name
Acquired finite-lived intangible asset, weighted average useful life						7 years
Computer Software, Intangible Asset [Member] | acquired entity name-Kepware [Domain]
Acquired entity Name
Finite-lived Intangible Assets Acquired			$ 28,700
Acquired finite-lived intangible asset, weighted average useful life			10 years
Computer Software, Intangible Asset [Member] | Vuforia Acquisition [Member]
Acquired entity Name
Finite-lived Intangible Assets Acquired				$ 41,200
Acquired finite-lived intangible asset, weighted average useful life				6 years
Customer Lists [Member]
Acquired entity Name
Acquired finite-lived intangible asset, weighted average useful life						10 years
Customer Lists [Member] | acquired entity name-Kepware [Domain]
Acquired entity Name
Finite-lived Intangible Assets Acquired			$ 5,200
Acquired finite-lived intangible asset, weighted average useful life			10 years
Trademarks and Trade Names [Member] | acquired entity name-Kepware [Domain]
Acquired entity Name
Finite-lived Intangible Assets Acquired			$ 600
Acquired finite-lived intangible asset, weighted average useful life			6 years
Line of Credit [Member]
Acquired entity Name
Long-term portion of long term debt		278,100				$ 278,100			$ 193,100
Line of Credit [Member] | acquired entity name-Kepware [Domain]
Acquired entity Name
Long-term portion of long term debt	$ 100,000
Line of Credit [Member] | Vuforia Acquisition [Member]
Acquired entity Name
Long-term portion of long term debt				$ 50,000
contingent consideration payment included in financing activities of cash flow [Member] | Acquired entity name: ColdLight [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]
Payments to Business Combination Contingent Consideration, Financing Activities						1,900
contingent consideration payment included in financing activities of cash flow [Member] | ThingWorx [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]
Payments to Business Combination Contingent Consideration, Financing Activities		8,700
contingent consideration payment included in operating activities of cash flow [Member] | Acquired entity name: ColdLight [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]
Payments to Business Combination Contingent Consideration, Operating Activities						$ 600
contingent consideration payment included in operating activities of cash flow [Member] | ThingWorx [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]
Payments to Business Combination Contingent Consideration, Operating Activities		$ 300