| Cover Page | Sep. 30, 2021 |
| Document and Entity Information [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Sep. 30, 2021 |
| Entity File Number | 000-52596 |
| Entity Registrant Name | BLACK CREEK DIVERSIFIED PROPERTY FUND INC. |
| Entity Incorporation, State or Country Code | MD |
| Entity Tax Identification Number | 30-0309068 |
| Entity Address, Address Line One | 518 Seventeenth Street, 17th Floor |
| Entity Address, City or Town | Denver |
| Entity Address, State or Province | CO |
| Entity Address, Postal Zip Code | 80202 |
| City Area Code | 303 |
| Local Phone Number | 228-2200 |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001327978 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Amendment Flag | false |
