Goodwill and Other Identifiable Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2016

Carrying Amount of Goodwill by Segment

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

In millions	December 31, 2015		Purchase accounting adjustments			Foreign currency  translation/other		March 31, 2016
Water Quality Systems	$	1,121.1	$	—		$	3.5	$	1,124.6
Flow & Filtration Solutions	882.7		—			12.1		894.8
Technical Solutions	2,255.2		(24.5		)	3.5		2,234.2
Valves & Controls	996.4		—			—		996.4
Total goodwill	$	5,255.4	$	(24.5	)	$	19.1	$	5,250.0

Detail of Identifiable Intangible Assets

Identifiable intangible assets consisted of the following:

	March 31, 2016							December 31, 2015
In millions	Cost		Accumulated amortization			Net		Cost		Accumulated amortization			Net
Finite-life intangibles
Customer relationships	$	2,085.5	$	(450.4	)	$	1,635.1	$	2,078.7	$	(415.8	)	$	1,662.9
Trade names	1.8		(1.2		)	0.6		1.8		(1.2		)	0.6
Proprietary technology and patents	250.6		(120.1		)	130.5		249.3		(114.2		)	135.1
Total finite-life intangibles	2,337.9		(571.7		)	1,766.2		2,329.8		(531.2		)	1,798.6
Indefinite-life intangibles
Trade names	694.8		—			694.8		691.5		—			691.5
Total intangibles, net	$	3,032.7	$	(571.7	)	$	2,461.0	$	3,021.3	$	(531.2	)	$	2,490.1

Estimated Future Amortization Expense for Identifiable Intangible Assets

Estimated future amortization expense for identifiable intangible assets during the remainder of 2016 and the next five years is as follows:

	Q2-Q4
In millions	2016		2017		2018		2019		2020		2021
Estimated amortization expense	$	113.2	$	150.1	$	148.6	$	146.1	$	139.3	$	134.2