Share-Based Payments - Schedule of Stock Option Activity (Details) - Intrexon Stock Option Plans - $ / shares	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Number of Shares
Balances at beginning of period (in shares)	11,382,747
Granted (in shares)	656,339
Exercised (in shares)	(21,722)
Forfeited (in shares)	(186,811)
Expired (in shares)	(284,119)
Balances at end of period (in shares)	11,546,434	11,382,747
Exercisable at end of period (in shares)	6,533,996
Weighted Average Exercise Price
Balances at beginning of period (in usd per share)	$ 28.99
Granted (in usd per share)	14.84
Exercised (in usd per share)	(3.40)
Forfeited (in usd per share)	(26.37)
Expired (in usd per share)	(27.67)
Balances at period end (in usd per share)	28.31	$ 28.99
Exercisable, weighted average exercise price, at end of period (in usd per share)	$ 29.29
Weighted Average Remaining Contractual Term (Years)
Balances, weighted average remaining contractual period	7 years 3 months	7 years 3 months 24 days
Exercisable at period end, weighted average remaining contractual period	6 years 4 months 18 days