Basic and Diluted Net Income (Loss) per Common Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Numerator:
Net income (loss) attributable to Jazz Pharmaceuticals plc	$ 25,766	$ 75,409	$ (23,225)	$ 161,019
Denominator:
Weighted-average ordinary shares used in calculating net income (loss) per ordinary share attributable to Jazz Pharmaceuticals plc - basic (in shares)	60,305	58,217	59,457	58,437
Dilutive effect of employee equity incentive and purchase plans (in shares)	2,288	1,852	0	1,587
Dilutive effect of warrants (in shares)	87	1,450	0	1,508
Weighted-average ordinary shares - diluted (in shares)	62,680	61,519	59,457	61,532
Net income (loss) per ordinary share attributable to Jazz Pharmaceuticals plc:
Basic net income (in dollars per share)	$ 0.43	$ 1.30	$ (0.39)	$ 2.76
Diluted net income (in dollars per share)	$ 0.41	$ 1.23	$ (0.39)	$ 2.62