Accumulated Other Comprehensive Loss - Additional Information (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Equity [Abstract]
Cumulative income tax benefit on foreign exchange adjustments	$ (0.7)
Cumulative income tax benefits related to adjustments for pension benefits	(29.3)	$ (14.1)	$ (24.8)
Cumulative income tax expense (benefit) related to adjustments for unrealized gain (loss) on derivatives	$ 0.0	$ (0.4)	$ (3.6)

Cumulative Other Comprehensive Income Loss, Pension And Other Postretirement Benefit Plans, Income Tax Expense (Benefit)

No definition available.

Name:	axta_CumulativeOtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansIncomeTaxExpenseBenefit
Namespace Prefix:	axta_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant