Goodwill and Other Identifiable Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Carrying Amount of Goodwill by Segment

The changes in the carrying amount of goodwill by reportable segment were as follows:

In millions	December 31, 2024		Foreign Currency Translation		June 30, 2025
Flow	$	730.4	$	63.6	$	794.0
Water Solutions	1,392.7		14.1		1,406.8
Pool	1,163.5		—		1,163.5
Total goodwill	$	3,286.6	$	77.7	$	3,364.3

Detail of Identifiable Intangible Assets

Identifiable intangible assets consisted of the following:

	June 30, 2025						December 31, 2024
In millions	Cost		Accumulated amortization		Net		Cost		Accumulated amortization		Net
Definite-life intangibles
Customer relationships	$	1,052.4	$	(361.6)	$	690.8	$	1,146.5	$	(400.2)	$	746.3
Proprietary technology and patents	76.1		(38.3)		37.8		88.8		(48.4)		40.4
Total definite-life intangibles	1,128.5		(399.9)		728.6		1,235.3		(448.6)		786.7
Indefinite-life intangibles
Trade names	255.3		—		255.3		247.1		—		247.1
Total intangibles	$	1,383.8	$	(399.9)	$	983.9	$	1,482.4	$	(448.6)	$	1,033.8

Estimated Future Amortization Expense for Identifiable Intangible Assets

Estimated future amortization expense for identifiable intangible assets during the remainder of 2025 and the next five years is as follows:

	Q3 - Q4
	2025		2026		2027		2028		2029		2030
Estimated amortization expense	$	27.9	$	54.4	$	53.1	$	50.5	$	50.1	$	49.5