Cover - shares	9 Months Ended
	Sep. 30, 2021	Dec. 17, 2021
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Sep. 30, 2021
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2021
Current Fiscal Year End Date	--12-31
Entity File Number	000-51302
Entity Registrant Name	MADISON TECHNOLOGIES INC.
Entity Central Index Key	0001318268
Entity Tax Identification Number	85-2151785
Entity Incorporation, State or Country Code	NV
Entity Address, Address Line One	450 Park Avenue
Entity Address, Address Line Two	30th Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10022
City Area Code	(212)
Local Phone Number	339-5888
Title of 12(b) Security	Common
Trading Symbol	MDEX
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		1,599,095,027