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
	Mar. 31, 2019	Mar. 31, 2018
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning of period	$ 116,703	$ 190,442
Amounts settled	(11,591)	(27,767)
Changes in fair value recorded in earnings	(37,501)	6,835
Effect of currency translation	231	(223)
Changes in Fair Value Recorded in Earnings	(37,501)
Amounts Settled and Other	(11,360)
End of period	67,842	$ 169,287
Auxilium acquisition
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning of period	14,157
Changes in Fair Value Recorded in Earnings	388
Amounts Settled and Other	0
End of period	14,545
Lehigh Valley Technologies, Inc. acquisitions
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning of period	34,700
Changes in Fair Value Recorded in Earnings	(400)
Amounts Settled and Other	(5,000)
End of period	29,300
VOLTAREN® Gel acquisition (1)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning of period	56,240
Changes in Fair Value Recorded in Earnings	(37,784)
Amounts Settled and Other	(6,260)
End of period	12,196
Other
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning of period	11,606
Changes in Fair Value Recorded in Earnings	295
Amounts Settled and Other	(100)
End of period	$ 11,801