Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2021	Apr. 26, 2021
Document and Entity Information
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Mar. 31, 2021
Entity File Number	001-38228
Entity Registrant Name	Maxar Technologies Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	83-2809420
Entity Address, Address Line One	1300 W. 120th Avenue,
Entity Address, City or Town	Westminster
Entity Address, State or Province	CO
Entity Address, Postal Zip Code	80234
City Area Code	303
Local Phone Number	684-7660
Security 12b Title	Common stock par value of $0.0001 per share
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Trading Symbol	MAXR
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		71,862,210
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Entity Central Index Key	0001121142
Amendment Flag	false