v3.25.2

Cover - shares	6 Months Ended
Cover - shares	Jun. 30, 2025	Jul. 18, 2025
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2025
Document Transition Report	false
Entity File Number	001-38636
Entity Registrant Name	Garrett Motion Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	82-4873189
Entity Address, Address Line One	La Pièce 16
Entity Address, City or Town	Rolle
Entity Address, Postal Zip Code	1180
Entity Address, Country	CH
City Area Code	1 734
Local Phone Number	392 5500
Title of 12(b) Security	Common Stock, $0.001 par value per share
Trading Symbol	GTX
Security Exchange Name	NASDAQ
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
Entity Common Stock, Shares Outstanding		201,575,459
Amendment Flag	false
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q2
Entity Central Index Key	0001735707
Current Fiscal Year End Date	--12-31
Other Address
Document Information [Line Items]
Entity Address, Address Line One	47548 Halyard Drive
Entity Address, City or Town	Plymouth
Entity Address, Postal Zip Code	48170
Entity Address, State or Province	MI
City Area Code	41
Local Phone Number	21 695 30 00

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Garrett Motion Inc. 10-Q