Cover Page Statement
Cover Page Statement | Jul. 24, 2019 | Jun. 30, 2019 |
Cover page. | ||
Entity Emerging Growth Company | false | |
Written Communications | false | |
Entity Incorporation, State or Country Code | DE | |
Entity Central Index Key | 0000899866 | |
Document Type | 8-K | |
Document Period End Date | Jul. 24, 2019 | |
Entity Registrant Name | ALEXION PHARMACEUTICALS, INC. | |
Entity Address, Address Line One | 121 Seaport Boulevard | |
Entity Address, City or Town | Boston | |
Entity Address, State or Province | MA | |
Entity Address, Postal Zip Code | 02210 | |
City Area Code | 475 | |
Local Phone Number | 230-2596 | |
Amendment Flag | false | |
Entity File Number | 000-27756 | |
Entity Tax Identification Number | 13-3648318 | |
Soliciting Material | false | |
Pre-commencement Tender Offer | false | |
Pre-commencement Issuer Tender Offer | false |