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Accounts and Notes Receivable, Net - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Receivables [Abstract]
Bad debt expense net of recoveries	$ 0.2	$ 7.0	$ 0.9	$ 10.4

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- Definition

Bad Debt Expense Net Of Recoveries

+ References

No definition available.

+ Details

Name:	axta_BadDebtExpenseNetOfRecoveries
Namespace Prefix:	axta_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- References

No definition available.

+ Details

Name:	us-gaap_ReceivablesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration