Accounts Payable And Accrued Expenses (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Accounts Payable and Accrued Liabilities, Current [Abstract]
Trade accounts payable	$ 120,366	$ 96,024
Returns and allowances	217,902	236,946
Rebates	124,050	144,860
Chargebacks	1,702	2,971
Accrued interest	114,232	130,182
Accrued payroll and related benefits	55,022	89,895
Accrued royalties and other distribution partner payables	106,305	122,028
Acquisition-related contingent consideration—current	20,412	36,514
Other	171,216	149,780
Total	$ 931,207	$ 1,009,200