XML 18 R1.htm IDEA: XBRL DOCUMENT v3.19.1
Document and Entity Information
 12 Months Ended
Dec. 31, 2018
shares
Document Information [Line Items]  
Document Type 40-F
Amendment Flag false
Document Period End Date Dec. 31, 2018
Document Fiscal Year Focus 2018
Document Fiscal Period Focus FY
Current Fiscal Year End Date --12-31
Entity Registrant Name EMERA INC
Entity Central Index Key 0001127248
Entity Current Reporting Status Yes
Entity Well-known Seasoned Issuer No
Entity Voluntary Filers No
Entity Filer Category Accelerated Filer
Trading Symbol EMA
Common Stock  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 234,116,829
Series A Preferred Stock [Member]  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 3,864,636
Series B Preferred Stock [Member]  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 2,135,364
Series C Preferred Stock [Member]  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 10,000,000
Series E Preferred Stock [Member]  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 5,000,000
Series F Preferred Stock [Member]  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 8,000,000
Series H Preferred Stock [Member}  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 12,000,000