Document And Entity Information - shares shares in Millions	6 Months Ended
	Jun. 30, 2018	Jul. 31, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2018
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2018
Entity Registrant Name	Phillips Edison Grocery Center REIT II, Inc.
Entity Central Index Key	0001581405
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		46.9