Cover Page - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Feb. 10, 2022	Jun. 30, 2021
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-36733
Entity Registrant Name	AXALTA COATING SYSTEMS LTD.
Entity Incorporation, State or Country Code	D0
Entity Tax Identification Number	98-1073028
Entity Address, Address Line One	50 Applied Bank Blvd
Entity Address, Address Line Two	Suite 300
Entity Address, City or Town	Glen Mills
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	19342
City Area Code	855
Local Phone Number	547-1461
Title of 12(b) Security	Common Shares, $1.00 par value
Trading Symbol	AXTA
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
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
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 7,049.9
Entity Common Stock, Shares Outstanding		224,532,960
Documents Incorporated by Reference	Part III incorporates information by reference from the registrant’s Proxy Statement for the 2022 Annual General Meeting of Members. Such proxy statement will be filed with the Securities and Exchange Commission within 120 days of the close of the registrant's fiscal year ended December 31, 2021.
Entity Central Index Key	0001616862
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Amendment Flag	false