Goodwill and Identifiable Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2017

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
Balance at December 31, 2015(a)	$	937.7		$	578.6		$	143.0	$	96.0	$	1,755.3
2016 translation adjustments		0.8			(2.3	)		—		0.3		(1.2	)
Acquisition-related adjustments		(14.2	)		93.9			—		—		79.7
Balance at December 31, 2016(a)	$	924.3		$	670.2		$	143.0	$	96.3	$	1,833.8
2017 translation adjustments		2.0			3.3			—		1.2		6.5
Acquisition-related adjustments		—			71.7			—		—		71.7
Balance at December 31, 2017(a)	$	926.3		$	745.2		$	143.0	$	97.5	$	1,912.0

^(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 intangible assets as of December 31, 2017 and 2016 were as follows:

	As of December 31, 2017							As of December 31, 2016
(In millions)	Gross Carrying Amounts		Accumulated Amortization			Net Book Value		Gross Carrying Amounts		Accumulated Amortization			Net Book Value
Indefinite-lived tradenames	$	709.9	$	—		$	709.9	$	671.8	$	—		$	671.8
Amortizable intangible assets
Tradenames		15.7		(9.9	)		5.8		15.8		(7.3	)		8.5
Customer and contractual relationships		663.8		(232.0	)		431.8		611.9		(203.1	)		408.8
Patents/proprietary technology		60.2		(45.3	)		14.9		61.9		(44.0	)		17.9
Total		739.7		(287.2	)		452.5		689.6		(254.4	)		435.2
Total identifiable intangibles	$	1,449.6	$	(287.2	)	$	1,162.4	$	1,361.4	$	(254.4	)	$	1,107.0