Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Jan. 02, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 435,260		$ 1,157,850	$ 817,982	$ 751,006
Restricted cash			750,000
Accounts receivable, net	481,488		133,581
Inventory	142,843		104,209
Deferred tax assets	222,958		85,788
Prepaid expenses and other current assets	134,664		51,241
Total current assets	1,417,213		2,282,669
Property and equipment, net	34,133		27,312
Goodwill	1,349,620	1,168,186	180,909
Product rights and intangibles, net	1,905,583		397,510
Other assets	90,001		37,551
Total assets	4,796,550		2,925,951
Current liabilities:
Accounts payable	38,344		32,632
Accrued liabilities	211,492		96,909
Income taxes payable			34,820
Reserve for product returns, rebates, chargebacks and patient-focused promotional programs	304,008	40,892	252,829
Current portion of convertible senior notes	327,430
Current portion of capital lease obligations	29		47
Total current liabilities	941,303		417,237
Long-term liabilities:
Convertible senior notes	573,915		882,050
Lease incentive obligation	9,420		8,610
2021 senior notes	573,915		882,050
Acquisition-related contingent consideration	128,488		87,300
Deferred tax liabilities	543,837		42,446
Other long-term liabilities	10,106		9,665
Total long-term liabilities	3,125,766		1,780,071
Stockholders' equity:
Preferred stock, $0.001 par value; 5,000,000 shares authorized, issuable in series, none outstanding
Common stock, $0.001 par value; 300,000,000 and 150,000,000 shares authorized, 63,498,722 and 62,937,966 shares issued and outstanding at June 30, 2014 and December 31, 2013, respectively	63		63
Additional paid-in-capital	702,634		667,428
Accumulated other comprehensive income	1,512		1,721
Retained earnings	25,272		59,431
Total stockholders' equity	729,481		728,643
Total liabilities and stockholders' equity	4,796,550		2,925,951
Term Loan B Facility [Member]
Current liabilities:
Current portion of Term Loan B credit facility	60,000
Long-term liabilities:
Term Loan B credit facility	1,110,000
6.60% Senior Notes Due 2021 [Member]
Long-term liabilities:
2021 senior notes	$ 750,000		$ 750,000