Earnings Per Common Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - Successor [Member] - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended								12 Months Ended
	Feb. 01, 2013	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income (loss) attributable to controlling interests		$ 38.6	$ 35.1	$ (25.1)	$ 45.1	$ (2.2)	$ (19.9)	$ 53.8	$ (4.3)	$ 93.7	$ 27.4	$ (224.9)
Pre-Acquisition net loss attributable to Axalta										0.0	0.0	(3.9)
Net income (loss) to common shareholders										$ 93.7	$ 27.4	$ (221.0)
Basic weighted average shares outstanding										233.8	229.3	228.3
Diluted weighted average shares outstanding										239.7	230.3	228.3
Earnings per Common Share:
Basic net income (loss) per share		$ 0.16	$ 0.15	$ (0.11)	$ 0.20	$ (0.01)	$ (0.09)	$ 0.23	$ (0.02)	$ 0.40	$ 0.12	$ (0.97)
Diluted net income (loss) per share		$ 0.16	$ 0.15	$ (0.11)	$ 0.19	$ (0.01)	$ (0.09)	$ 0.23	$ (0.02)	$ 0.39	$ 0.12	$ (0.97)
Consideration transferred, equity interests issued and issuable	$ 1,350.0