Goodwill and Other Identifiable Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2015

The changes in the carrying amount of goodwill for the years ended December 31, 2015 and 2014 by reportable segment were as follows:



In millions	December 31, 2014		Acquisitions/ divestitures		Impairment			Foreign currency translation/other			December 31, 2015
Valves & Controls	$	1,511.6	$	—	$	(515.2	)	$	—		$	996.4
Flow & Filtration Solutions	942.4		—		—			(59.7		)	882.7
Water Quality Systems	1,137.6		—		—			(16.5		)	1,121.1
Technical Solutions	1,150.3		1,116.4		—			(11.5		)	2,255.2
Total goodwill	$	4,741.9	$	1,116.4	$	(515.2	)	$	(87.7	)	$	5,255.4



In millions	December 31, 2013		Acquisitions/ divestitures		Foreign currency translation/other			December 31, 2014
Valves & Controls	$	1,511.6	$	—	$	—		$	1,511.6
Flow & Filtration Solutions	1,036.4		—		(94.0		)	942.4
Water Quality Systems	1,154.7		6.8		(23.9		)	1,137.6
Technical Solutions	1,158.0		—		(7.7		)	1,150.3
Total goodwill	$	4,860.7	$	6.8	$	(125.6	)	$	4,741.9

Identifiable intangible assets consisted of the following at December 31:



	2015							2014
In millions	Cost		Accumulated amortization			Net		Cost		Accumulated amortization			Net
Finite-life intangibles
Customer relationships	$	2,078.7	$	(415.8	)	$	1,662.9	$	1,247.8	$	(325.2	)	$	922.6
Trade names	1.8		(1.2		)	0.6		2.0		(1.1		)	0.9
Proprietary technology and patents	249.3		(114.2		)	135.1		255.7		(96.7		)	159.0
Total finite-life intangibles	2,329.8		(531.2		)	1,798.6		1,505.5		(423.0		)	1,082.5
Indefinite-life intangibles
Trade names	691.5		—			691.5		525.6		—			525.6
Total intangibles	$	3,021.3	$	(531.2	)	$	2,490.1	$	2,031.1	$	(423.0	)	$	1,608.1

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



In millions	2016		2017		2018		2019		2020
Estimated amortization expense	$	149.5	$	148.0	$	145.6	$	138.8	$	133.7