Mergers and Acquisitions - Additional Information (Details)			1 Months Ended		3 Months Ended		6 Months Ended		12 Months Ended
	Aug. 08, 2014 USD ($) installment shares	Mar. 06, 2014 USD ($) Note shares	Apr. 30, 2015 USD ($) shares	Feb. 28, 2015 USD ($) shares	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2012 USD ($)
Business Acquisition [Line Items]
Revenues					$ 44,891,000	$ 11,787,000	$ 78,740,000	$ 19,641,000
Net loss attributable to Intrexon					(40,663,000)	(52,043,000)	(13,566,000)	(47,928,000)
Okanagan Specialty Fruits Inc
Business Acquisition [Line Items]
Percentage of outstanding common stock acquired			100.00%
Business acquisition, consideration paid, shares issued | shares			707,853
Cash			$ 10,000,000
Total consideration transferred			$ 40,933,000
Weighted average useful life (years)			14 years
Business combination, acquisition related cost							341,000
Okanagan Specialty Fruits Inc | Selling, general and administrative
Business Acquisition [Line Items]
Business combination, acquisition related cost					104,000		267,000
ActoGeniX NV
Business Acquisition [Line Items]
Percentage of outstanding common stock acquired				100.00%
Business acquisition, consideration paid, shares issued | shares				965,377
Cash				$ 32,739,000
Total consideration transferred				72,474,000
Business combination, acquisition related cost							418,000
ActoGeniX NV | Selling, general and administrative
Business Acquisition [Line Items]
Business combination, acquisition related cost							381,000
Trans Ova Genetics, LC
Business Acquisition [Line Items]
Percentage of outstanding common stock acquired	100.00%
Business acquisition, consideration paid, shares issued | shares	1,444,388
Cash	$ 63,625,000
Total consideration transferred	116,542,000
Business combination, acquisition related cost									$ 713,000
Deferred cash consideration	$ 20,115,000
Deferred cash consideration, number of payment installments | installment	3
Revenues					27,534,000		46,460,000
Net loss attributable to Intrexon					4,422,000		4,185,000
Total	$ 127,875,000
Possible future contingent payments to former equity holders										$ 6,000,000
Possible future contingent payments to former equity holders, current valuation					$ 0		$ 0
Trans Ova Genetics, LC | Selling, general and administrative
Business Acquisition [Line Items]
Business combination, acquisition related cost						312,000		312,000
Exemplar Genetics, LLC
Business Acquisition [Line Items]
Cash paid to acquire noncontrolling interest				$ 1,566,000
Shares issued to acquire noncontrolling interest | shares				307,074
Medistem, Inc.
Business Acquisition [Line Items]
Percentage of outstanding common stock acquired		100.00%
Business acquisition, consideration paid, shares issued | shares		714,144
Cash		$ 4,920,000
Total consideration transferred		$ 24,995,000
Business combination, acquisition related cost									$ 680,000
Number of promissory notes settled upon the closing of the merger | Note		2
Shares of merger consideration surrendered by acquiree management to reimburse for required payroll tax withholdings | shares		17,695
Medistem, Inc. | Settlement of Promissory Notes
Business Acquisition [Line Items]
Total consideration transferred		$ 707,000
Medistem, Inc. | Selling, general and administrative
Business Acquisition [Line Items]
Business combination, acquisition related cost						$ 19,000		$ 310,000
Minimum
Business Acquisition [Line Items]
Weighted average useful life (years)							2 years
Minimum | Trans Ova Genetics, LC
Business Acquisition [Line Items]
Weighted average useful life (years)	3 years
Maximum
Business Acquisition [Line Items]
Weighted average useful life (years)							14 years
Maximum | Trans Ova Genetics, LC
Business Acquisition [Line Items]
Weighted average useful life (years)	9 years
Scenario, Plan | Okanagan Specialty Fruits Inc
Business Acquisition [Line Items]
Total consideration transferred			$ 40,933,000