| Cover Document | Feb. 17, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Feb. 17, 2021 |
| Entity Registrant Name | AXALTA COATING SYSTEMS LTD. |
| Entity Incorporation, State or Country Code | D0 |
| Entity File Number | 001-36733 |
| Entity Tax Identification Number | 98-1073028 |
| Entity Address, Address Line One | Two Commerce Square, 2001 Market Street, Suite 3600 |
| Entity Address, City or Town | Philadelphia |
| Entity Address, State or Province | PA |
| Entity Address, Postal Zip Code | 19103 |
| City Area Code | 855 |
| Local Phone Number | 547-1461 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Shares, $1.00 par value |
| Trading Symbol | AXTA |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Amendment Flag | false |
| Entity Central Index Key | 0001616862 |
