SUBSEQUENT EVENTS	3 Months Ended
Mar. 31, 2020
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTSOn April 10, 2020, we entered into a broad strategic financing collaboration with the Blackstone Group Inc., or Blackstone, under which Blackstone will provide up to $2.0 billion to support our advancement of innovative RNAi medicines that have the potential to transform the lives of patients suffering from a range of debilitating diseases. The strategic financing collaboration includes: (1) $1.0 billion in committed payments to acquire 50% of royalties and 75% of commercial milestones payable to us in connection with sales of inclisiran; (2) up to $750.0 million in a first lien senior secured term loan; (3) up to $150.0 million for development of vutrisiran and ALN-AGT, subject to completion of a definitive agreement; and (4) the purchase of $100.0 million of our common stock.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

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