Goodwill and Identifiable Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2018

Change in Net Carrying Amount of Goodwill by Segment

The change in the net carrying amount of goodwill by segment was as follows:


(In millions)	Cabinets			Plumbing			Doors		Security			Total Goodwill
Goodwill at December 31, 2017 ^(a)	$	926.3		$	745.2		$	143.0	$	97.5		$	1,912.0
Year-to-date translation adjustments		(0.2	)		(1.1	)		—		(0.5	)		(1.8	)
Acquisition-related adjustments		—			8.5			—		—			8.5

Goodwill at March 31, 2018 ^(a)	$	926.1		$	752.6		$	143.0	$	97.0		$	1,918.7

^(a)

Net of accumulated impairment losses of $399.5 million in the Doors segment.

Gross Carrying Value and Accumulated Amortization by Class of Identifiable Intangible Assets

The gross carrying value and accumulated amortization by class of identifiable intangible assets as of March 31, 2018 and December 31, 2017 were as follows:


(In millions)	As of March 31, 2018							As of December 31, 2017
	Gross Carrying Amounts		Accumulated Amortization			Net Book Value		Gross Carrying Amounts		Accumulated Amortization			Net Book Value
Indefinite-lived tradenames	$	709.2	$	—		$	709.2	$	709.9	$	—		$	709.9

Amortizable intangible assets
Tradenames		15.7		(10.4	)		5.3		15.7		(9.9	)		5.8
Customer and contractual relationships		661.1		(238.8	)		422.3		663.8		(232.0	)		431.8
Patents/proprietary technology		60.3		(45.9	)		14.4		60.2		(45.3	)		14.9

Total		737.1		(295.1	)		442.0		739.7		(287.2	)		452.5

Total identifiable intangibles	$	1,446.3	$	(295.1	)	$	1,151.2	$	1,449.6	$	(287.2	)	$	1,162.4