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Stock Option Plans - Schedule of Stock Option Activity (Details) (Intrexon Stock Option Plan, USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015		Dec. 31, 2014
Intrexon Stock Option Plan
Number of shares
Balances at beginning of period	8,323,544us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_PlanNameAxis = xon_IntrexonStockOptionPlanMember
Granted	950,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_PlanNameAxis = xon_IntrexonStockOptionPlanMember
Exercised	(204,487)us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_PlanNameAxis = xon_IntrexonStockOptionPlanMember
Forfeited	(118,036)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod / us-gaap_PlanNameAxis = xon_IntrexonStockOptionPlanMember
Expired	(142)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod / us-gaap_PlanNameAxis = xon_IntrexonStockOptionPlanMember
Balances at period end	8,951,379us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_PlanNameAxis = xon_IntrexonStockOptionPlanMember		8,323,544us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_PlanNameAxis = xon_IntrexonStockOptionPlanMember
Exercisable at end of period	2,568,344us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber / us-gaap_PlanNameAxis = xon_IntrexonStockOptionPlanMember
Vested and Expected to Vest at end of period	7,447,767us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber / us-gaap_PlanNameAxis = xon_IntrexonStockOptionPlanMember	[1]
Weighted average exercise price (usd per share)
Balances at beginning of period	$ 22.59us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / us-gaap_PlanNameAxis = xon_IntrexonStockOptionPlanMember
Granted	$ 43.17us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice / us-gaap_PlanNameAxis = xon_IntrexonStockOptionPlanMember
Exercised	$ (12.56)us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice / us-gaap_PlanNameAxis = xon_IntrexonStockOptionPlanMember
Forfeited	$ (24.76)us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice / us-gaap_PlanNameAxis = xon_IntrexonStockOptionPlanMember
Expired	$ (7.12)us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice / us-gaap_PlanNameAxis = xon_IntrexonStockOptionPlanMember
Balances at period end	$ 24.97us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / us-gaap_PlanNameAxis = xon_IntrexonStockOptionPlanMember		$ 22.59us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / us-gaap_PlanNameAxis = xon_IntrexonStockOptionPlanMember
Exercisable, weighted average exercise price, at end of period	$ 18.74us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice / us-gaap_PlanNameAxis = xon_IntrexonStockOptionPlanMember
Vested and Expected to Vest, weighted average exercise price at end of period	$ 24.20us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice / us-gaap_PlanNameAxis = xon_IntrexonStockOptionPlanMember	[1]
Weighted average remaining contractual term
Balances at period end, weighted average remaining contractual period	8 years 5 months 27 days		8 years 7 months 21 days
Exercisable at period end, weighted average remaining contractual period	7 years 3 months 26 days
Vested and Expected to Vest at period end, weighted average remaining contractual period	8 years 4 months 17 days	[1]
[1] The number of stock options expected to vest takes into account an estimate of expected forfeitures.

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of exercisable share options (fully vested and expected to vest) that may be converted as of the balance sheet date.

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As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan.

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As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest.

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Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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