Goodwill and Intangible Assets - Summary of Changes in the Carrying Value of Goodwill by Reportable Segment (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Carrying value of goodwill by reportable operating segment
Opening balance	$ 7,583.2	$ 7,134.6	$ 7,049.1
Reclassification related to segment change			0.0
Acquisitions and acquisition adjustments	8.3	493.5	155.6
Currency and other adjustments	34.5	(44.9)	(70.1)
Closing balance	7,626.0	7,583.2	7,134.6
Accumulated impairment losses	19.4
Paint Stores Group
Carrying value of goodwill by reportable operating segment
Opening balance	2,231.8	2,182.1	2,256.6
Reclassification related to segment change			(74.5)
Acquisitions and acquisition adjustments		49.7
Closing balance	2,231.8	2,231.8	2,182.1
Accumulated impairment losses	10.2
Consumer Brands Group
Carrying value of goodwill by reportable operating segment
Opening balance	1,801.9	1,783.4	1,754.6
Reclassification related to segment change			74.5
Acquisitions and acquisition adjustments		21.3
Currency and other adjustments	(9.1)	(2.8)	(45.7)
Closing balance	1,792.8	1,801.9	1,783.4
Accumulated impairment losses	8.4
Performance Coatings Group
Carrying value of goodwill by reportable operating segment
Opening balance	3,549.5	3,169.1	3,037.9
Acquisitions and acquisition adjustments	8.3	422.5	155.6
Currency and other adjustments	43.6	(42.1)	(24.4)
Closing balance	3,601.4	$ 3,549.5	$ 3,169.1
Accumulated impairment losses	$ 0.8

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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