100000 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 100010 - Statement - CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 100020 - Disclosure - COMMITMENTS AND CONTINGENCIES - Schedule of Future Minimum Lease Payments (Details) 2 link:presentationLink link:calculationLink link:definitionLink 100030 - Disclosure - CONSOLIDATED ENTITIES AND ACQUISITIONS - Theravance Respiratory Company, LLC (Details) 2 link:presentationLink link:calculationLink link:definitionLink 100040 - Disclosure - EQUITY AND LONG-TERM INVESTMENTS AND FAIR VALUE MEASUREMENTS - Schedule of Available-for-Sale Securities Measured at Fair Value on a Recurring Basis (Details) 2 link:presentationLink link:calculationLink link:definitionLink 100050 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Summary of Accumulated Amortization of Recognized Intangible Assets (Details) 2 link:presentationLink link:calculationLink link:definitionLink 100060 - Disclosure - INCOME TAXES - Deferred Taxes (Details) 2 link:presentationLink link:calculationLink link:definitionLink 100070 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 100080 - Statement - CONSOLIDATED STATEMENTS OF INCOME link:presentationLink link:calculationLink link:definitionLink 100090 - Statement - CONSOLIDATED STATEMENTS OF INCOME (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 100100 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME link:presentationLink link:calculationLink link:definitionLink 100110 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 100120 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 100130 - Disclosure - DESCRIPTION OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 100140 - Disclosure - NET INCOME PER SHARE link:presentationLink link:calculationLink link:definitionLink 100150 - Disclosure - REVENUE RECOGNITION link:presentationLink link:calculationLink link:definitionLink 100160 - Disclosure - LICENSE AND COLLABORATION ARRANGEMENTS link:presentationLink link:calculationLink link:definitionLink 100170 - Disclosure - CONSOLIDATED ENTITIES AND ACQUISITIONS link:presentationLink link:calculationLink link:definitionLink 100180 - Disclosure - EQUITY AND LONG-TERM INVESTMENTS AND FAIR VALUE MEASUREMENTS link:presentationLink link:calculationLink link:definitionLink 100190 - Disclosure - CAPITALIZED FEES PAID link:presentationLink link:calculationLink link:definitionLink 100200 - Disclosure - GOODWILL AND INTANGIBLE ASSETS link:presentationLink link:calculationLink link:definitionLink 100210 - Disclosure - BALANCE SHEET COMPONENTS link:presentationLink link:calculationLink link:definitionLink 100220 - Disclosure - STOCK-BASED COMPENSATION link:presentationLink link:calculationLink link:definitionLink 100230 - Disclosure - STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 100240 - Disclosure - DEBT link:presentationLink link:calculationLink link:definitionLink 100250 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 100260 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 100270 - Disclosure - SUBSEQUENT EVENTS link:presentationLink link:calculationLink link:definitionLink 100280 - Disclosure - DESCRIPTION OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 100290 - Disclosure - DESCRIPTION OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) link:presentationLink link:calculationLink link:definitionLink 100300 - Disclosure - NET INCOME PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 100310 - Disclosure - REVENUE RECOGNITION (Tables) link:presentationLink link:calculationLink link:definitionLink 100320 - Disclosure - CONSOLIDATED ENTITIES AND ACQUISITIONS (Tables) link:presentationLink link:calculationLink link:definitionLink 100330 - Disclosure - EQUITY AND LONG-TERM INVESTMENTS AND FAIR VALUE MEASUREMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 100340 - Disclosure - CAPITALIZED FEES PAID (Tables) link:presentationLink link:calculationLink link:definitionLink 100350 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Tables) link:presentationLink link:calculationLink link:definitionLink 100360 - Disclosure - BALANCE SHEET COMPONENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 100370 - Disclosure - STOCK-BASED COMPENSATION (Tables) link:presentationLink link:calculationLink link:definitionLink 100380 - Disclosure - DEBT (Tables) link:presentationLink link:calculationLink link:definitionLink 100390 - Disclosure - COMMITMENTS AND CONTINGENCIES (Tables) link:presentationLink link:calculationLink link:definitionLink 100400 - Disclosure - INCOME TAXES (Tables) link:presentationLink link:calculationLink link:definitionLink 100410 - Disclosure - DESCRIPTION OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Description of Operations (Details) link:presentationLink link:calculationLink link:definitionLink 100420 - Disclosure - DESCRIPTION OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 100430 - Disclosure - DESCRIPTION OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Related Party Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 100440 - Disclosure - NET INCOME PER SHARE (Details) link:presentationLink link:calculationLink link:definitionLink 100450 - Disclosure - NET INCOME PER SHARE - Basic and Diluted EPS (Details) link:presentationLink link:calculationLink link:definitionLink 100460 - Disclosure - NET INCOME PER SHARE - Anti-Dilutive Securities (Details) link:presentationLink link:calculationLink link:definitionLink 100470 - Disclosure - REVENUE RECOGNITION - Schedule of net revenue from collaborative arrangements (Details) link:presentationLink link:calculationLink link:definitionLink 100480 - Disclosure - REVENUE RECOGNITION (Details) link:presentationLink link:calculationLink link:definitionLink 100490 - Disclosure - LICENSE AND COLLABORATION ARRANGEMENTS - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100500 - Disclosure - CONSOLIDATED ENTITIES AND ACQUISITIONS - Theravance Respiratory Company, LLC (Details) link:presentationLink link:calculationLink link:definitionLink 100510 - Disclosure - CONSOLIDATED ENTITIES AND ACQUISITIONS - ISP Fund LP (Details) link:presentationLink link:calculationLink link:definitionLink 100520 - Disclosure - CONSOLIDATED ENTITIES AND ACQUISITIONS - Entasis Therapeutics Holdings, Inc. (Details) link:presentationLink link:calculationLink link:definitionLink 100530 - Disclosure - CONSOLIDATED ENTITIES AND ACQUISITIONS - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Details) link:presentationLink link:calculationLink link:definitionLink 100540 - Disclosure - CONSOLIDATED ENTITIES AND ACQUISITIONS - La Jolla Pharmaceutical Company (Details) link:presentationLink link:calculationLink link:definitionLink 100550 - Disclosure - CONSOLIDATED ENTITIES AND ACQUISITIONS - Pro Forma Information (Details) link:presentationLink link:calculationLink link:definitionLink 100560 - Disclosure - EQUITY AND LONG-TERM INVESTMENTS AND FAIR VALUE MEASUREMENTS - Equity Investment in Armata (Details) link:presentationLink link:calculationLink link:definitionLink 100570 - Disclosure - EQUITY AND LONG-TERM INVESTMENTS AND FAIR VALUE MEASUREMENTS - Summarized Financial Data (Details) link:presentationLink link:calculationLink link:definitionLink 100580 - Disclosure - EQUITY AND LONG-TERM INVESTMENTS AND FAIR VALUE MEASUREMENTS - Equity Investment in InCarda (Details) link:presentationLink link:calculationLink link:definitionLink 100590 - Disclosure - EQUITY AND LONG-TERM INVESTMENTS AND FAIR VALUE MEASUREMENTS - Equity Investment in ImaginAb (Details) link:presentationLink link:calculationLink link:definitionLink 100600 - Disclosure - EQUITY AND LONG-TERM INVESTMENTS AND FAIR VALUE MEASUREMENTS - Convertible Promissory Note in Gate Neurosciences (Details) link:presentationLink link:calculationLink link:definitionLink 100610 - Disclosure - EQUITY AND LONG-TERM INVESTMENTS AND FAIR VALUE MEASUREMENTS - Equity Investment in Nanolive (Details) link:presentationLink link:calculationLink link:definitionLink 100620 - Disclosure - EQUITY AND LONG-TERM INVESTMENTS AND FAIR VALUE MEASUREMENTS - Available-for-Sale Securities (Details) link:presentationLink link:calculationLink link:definitionLink 100630 - Disclosure - EQUITY AND LONG-TERM INVESTMENTS AND FAIR VALUE MEASUREMENTS - Schedule of Available-for-Sale Securities Measured at Fair Value on a Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 100640 - Disclosure - CAPITALIZED FEES PAID - Schedule of Capitalized Fees Paid (Details) link:presentationLink link:calculationLink link:definitionLink 100650 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Additional Information) (Details) link:presentationLink link:calculationLink link:definitionLink 100660 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Summary of Accumulated Amortization of Recognized Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 100670 - Disclosure - BALANCE SHEET COMPONENTS - Schedule of Inventory, net (Details) link:presentationLink link:calculationLink link:definitionLink 100680 - Disclosure - BALANCE SHEET COMPONENTS - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100690 - Disclosure - BALANCE SHEET COMPONENTS - Schedule Of Other Accrued Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 100700 - Disclosure - BALANCE SHEET COMPONENTS -Schedule of Other Long-term Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 100710 - Disclosure - STOCK-BASED COMPENSATION - 2012 Plan and ESPP (Details) link:presentationLink link:calculationLink link:definitionLink 100720 - Disclosure - STOCK-BASED COMPENSATION - Director Compensation Program (Details) link:presentationLink link:calculationLink link:definitionLink 100730 - Disclosure - STOCK-BASED COMPENSATION - Stock-Based Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 100740 - Disclosure - STOCK-BASED COMPENSATION - Compensation Awards (Details) link:presentationLink link:calculationLink link:definitionLink 100750 - Disclosure - STOCK-BASED COMPENSATION - Valuation Assumptions (Details) link:presentationLink link:calculationLink link:definitionLink 100760 - Disclosure - STOCKHOLDERS' EQUITY (Details) link:presentationLink link:calculationLink link:definitionLink 100770 - Disclosure - DEBT - Schedule of Debt (Details) link:presentationLink link:calculationLink link:definitionLink 100780 - Disclosure - DEBT - Convertible Subordinated Notes (Details) link:presentationLink link:calculationLink link:definitionLink 100790 - Disclosure - DEBT - Convertible Senior Notes (Details) link:presentationLink link:calculationLink link:definitionLink 100800 - Disclosure - DEBT - Debt Maturities (Details) link:presentationLink link:calculationLink link:definitionLink 100810 - Disclosure - COMMITMENTS AND CONTINGENCIES - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100820 - Disclosure - COMMITMENTS AND CONTINGENCIES - Schedule of Components of Least Cost (Details) link:presentationLink link:calculationLink link:definitionLink 100830 - Disclosure - COMMITMENTS AND CONTINGENCIES - Schedule of Supplemental Cash Flow Information Related to Lease (Details) link:presentationLink link:calculationLink link:definitionLink 100840 - Disclosure - COMMITMENTS AND CONTINGENCIES - Schedule of Operating Lease Information Presented in Balance Sheet (Details) link:presentationLink link:calculationLink link:definitionLink 100850 - Disclosure - COMMITMENTS AND CONTINGENCIES - Schedule of Future Minimum Lease Payments (Details) link:presentationLink link:calculationLink link:definitionLink 100860 - Disclosure - INCOME TAXES - Income tax expense (Details) link:presentationLink link:calculationLink link:definitionLink 100870 - Disclosure - INCOME TAXES - Reconciliation (Details) link:presentationLink link:calculationLink link:definitionLink 100880 - Disclosure - INCOME TAXES - Deferred Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 100890 - Disclosure - INCOME TAXES - Additional Tax Disclosures (Details) link:presentationLink link:calculationLink link:definitionLink 100900 - Disclosure - SUBSEQUENT EVENTS - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink