CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 507,907	$ 648,719
Marketable securities	234,257	251,761
Accounts receivable - trade, net	1,015,962	739,379
Accounts Receivable from Sanofi	159,444	121,058
Accounts receivable from Bayer HealthCare	163,056	156,962
Inventories	133,863	128,861
Deferred tax assets	62,126	49,235
Prepaid expenses and other current assets	34,099	71,486
Total current assets	2,310,714	2,167,461
Marketable securities	483,305	460,154
Property, plant, and equipment, at cost, net of accumulated depreciation and amortization	1,110,597	974,309
Deferred tax assets	289,484	289,021
Other assets	4,473	3,034
Total assets	4,198,573	3,893,979
Current liabilities:
Accounts payable and accrued expenses	462,762	483,489
Deferred revenue from Sanofi, current portion	19,342	15,927
Deferred revenue - other, current portion	51,845	58,098
Other Liabilities, Current	2,185	97,146
Total current liabilities	536,134	654,660
Deferred revenue from Sanofi	48,656	72,367
Deferred Revenue - other	114,318	103,909
Facility lease obligations	328,394	310,938
Convertible senior notes	144,082	146,773
Other long-term liabilities	55,559	40,855
Total liabilities	1,227,143	1,329,502
Stockholders' equity:
Preferred Stock	0	0
Additional paid-in capital	2,812,573	2,465,008
Retained earnings	292,665	216,644
Accumulated other comprehensive income	47,904	52,251
Treasury stock	(181,817)	(169,530)
Total stockholders' equity	2,971,430	2,564,477
Total liabilities and stockholders' equity	4,198,573	3,893,979
Class A Stock
Stockholders' equity:
Common stock	2	2
Common Stock
Stockholders' equity:
Common stock	$ 103	$ 102