Income Taxes	3 Months Ended
Income Taxes	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income TaxesThe effective tax rate was 8% for the three months ended March 31, 2021 and 3% for the three months ended March 31, 2020. The effective tax rate in each period differed from the U.S. statutory tax rate of 21% principally due to the benefit from foreign operations which reflects the impact of lower income tax rates in locations outside the United States, tax incentives in Puerto Rico and other foreign tax jurisdictions and business development activities. The increase in the effective tax rate for the three months ended March 31, 2021 over the prior year was principally due to the beneficial tax impact of a change in tax rate in a foreign jurisdiction in prior year, the impact of changes in contingent consideration liabilities, collaboration related costs and changes in the company's taxable earnings among jurisdictions.Due to the potential for resolution of federal, state and foreign examinations and the expiration of various statutes of limitations, it is reasonably possible that the company’s gross unrecognized tax benefits balance may change within the next 12 months by up to $116 million.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.