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Scenario [Axis] Scenario [Axis] Debt Instrument [Line Items] Debt Instrument [Line Items] Basic (in shares) Weighted-average shares for basic EPS (in shares) Weighted Average Number of Shares Outstanding, Basic Horizon Therapeutics Horizon Therapeutics [Member] Horizon Therapeutics Acquisition IPR&D Effective Income Tax Rate Reconciliation, Nondeductible Expense, Research and Development, Percent Fixed assets Deferred Tax Liabilities, Property, Plant and Equipment Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] 3.625% Notes Due 2022 Three Point Six Two Five Percent Notes Due 2022 [Member] Three Point Six Two Five Percent Notes Due 2022 [Member] Other Property, Plant and Equipment, Other Types [Member] Schedule of Indefinite-Lived Intangible Assets [Table] Schedule of Indefinite-Lived Intangible Assets [Table] Revenues: Revenues [Abstract] Vectibix Vectibix [Member] Vectibix Computation of basic and diluted earnings per share Basic And Diluted Earning Per Share [Abstract] Basic and diluted earning per share. 5.15% notes due 2028 (5.15% 2028 Notes) 5.15% Notes Due 2028 (5.15% 2028 Notes) [Member] 5.15% Notes Due 2028 (5.15% 2028 Notes) Business combination, turnover period of inventory acquired Business Combination, Turnover Period Of Inventory Acquired Business Combination, Turnover Period Of Inventory Acquired Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Statement [Line Items] Statement [Line Items] Concentration Risk [Table] Concentration Risk [Table] Vested or expected to vest (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Acquired intangible assets Deferred Tax Liabilities, Intangible Assets Foreign currency and cross currency swap contracts Foreign Currency and Cross Currency Swaps [Member] Foreign currency and cross currency swaps. Schedule of Available-For-Sale Investments Debt Securities, Available-for-Sale [Table Text Block] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Partnership Interest [Member]