Fair Value Measurements - Financial Liabilities Measured At Fair Value On Recurring Basis Using Significant Unobservable Inputs (Details) - Acquisition-related contingent consideration - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning of period	$ 152,098	$ 210,460	$ 190,442	$ 262,113
Amounts settled	(24,564)	(31,617)	(73,298)	(91,927)
Changes in fair value recorded in earnings	769	15,440	11,731	23,574
Effect of currency translation	167	504	(405)	1,027
Fair Value Adjustments and Accretion			11,731
Payments and Other			(73,703)
End of period	128,470	$ 194,787	128,470	$ 194,787
Auxilium acquisition
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning of period			13,061
Fair Value Adjustments and Accretion			(263)
Payments and Other			(1,844)
End of period	10,954		10,954
Lehigh Valley Technologies, Inc. acquisitions
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning of period			63,001
Fair Value Adjustments and Accretion			11,169
Payments and Other			(39,469)
End of period	34,701		34,701
VOLTAREN® Gel acquisition
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning of period			98,124
Fair Value Adjustments and Accretion			3,839
Payments and Other			(30,923)
End of period	71,040		71,040
Other
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning of period			16,256
Fair Value Adjustments and Accretion			(3,014)
Payments and Other			(1,467)
End of period	$ 11,775		$ 11,775