About the Company (Details Narrative)									3 Months Ended	12 Months Ended
About the Company (Details Narrative)	Mar. 31, 2018 shares	Oct. 02, 2017 shares	Aug. 29, 2017 shares	May 01, 2017 shares	Apr. 03, 2017 Integer shares	Mar. 02, 2017 shares	Oct. 07, 2016 shares	Sep. 15, 2016 USD ($) shares	Aug. 30, 2018 shares	Dec. 31, 2017 shares	Aug. 31, 2018 $ / shares shares	Aug. 31, 2017 $ / shares shares	May 24, 2017 shares	Nov. 21, 2016 shares	Sep. 26, 2016 $ / shares
Common stock conversion shares value \| $								$ 200,000
Restricted Stock [Member]
Stock issued during period, shares, issued for services		82,000
Minimum [Member]
Common stock, shares authorized														75,000,000
Minimum [Member] \| Board of Directors [Member]
Common stock, shares authorized													200,000,000
Maximum [Member]
Common stock, shares authorized														200,000,000
Maximum [Member] \| Board of Directors [Member]
Common stock, shares authorized													2,000,000,000
Class A Common Stock [Member]
Unregistered restricted shares issued								30,000,000
Common stock, par value \| $ / shares											$ 0.001	$ 0.001			$ 0.001
Number of shares issued							30,000,000
Common stock, shares authorized											1,000,000,000	1,000,000,000	1,000,000,000	130,000,000
Common stock, shares outstanding											30,799,046	30,717,046
Common stock, shares issued											30,799,046	30,717,046
Class A Common Stock [Member] \| UBI Delaware [Member]
Common stock, shares outstanding											30,799,046
Common stock, shares issued											30,799,046
Class A Common Stock [Member] \| UBI Hong Kong [Member]
Common stock, shares outstanding											30,000,000
Ownership percentage											97.00%
Class A Common Stock [Member] \| Independent Consultant [Member] \| Restricted Stock [Member]
Stock issued during period, shares, issued for services				500,000
Class B Common Stock [Member]
Unregistered restricted shares issued								6,000,000
Common stock voting rights								which carries a voting weight equal to ten (10) Common Shares
Common stock, par value \| $ / shares											$ 0.001	$ 0.001			0.001
Number of shares issued							6,000,000
Common stock, shares authorized											500,000,000	500,000,000	500,000,000	6,000,000
Common stock, shares outstanding											6,000,000	6,000,000
Common stock, shares issued											6,000,000	6,000,000
Class C Common Stock [Member]
Unregistered restricted shares issued								40,000,000
Common stock, par value \| $ / shares											$ 0.001	$ 0.001			$ 0.001
Number of shares issued			25,000,000			40,000,000				8,400,000
Common stock, shares authorized											500,000,000	500,000,000	500,000,000	64,000,000
Stock issued during period, shares, issued for services									150,000
Common stock, shares outstanding											73,550,000	73,400,000
Common stock, shares issued											73,550,000	73,400,000
Class C Common Stock [Member] \| Restricted Stock [Member]
Stock issued during period, shares, issued for services	150,000
Class C Common Stock [Member] \| Chief Executive Officer [Member] \| September 15, 2016 Agreement [Member]
Number of shares issued						40,000,000
Class C Common Stock [Member] \| 45 Contractor Employees and Nonemployees [Member]
Number of shares issued					8,400,000
Number of contractor employees and nonemployees \| Integer					45

UBI Blockchain Internet LTD-DE 10-K