Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Goodwill

GOODWILL	Total			Passive Safety Segment			Electronics Segment
Carrying amount at December 31, 2015	$	1,666.3		$	1,388.3		$	278.0
Acquisition		217.8			—			217.8
Translation differences		(13.4	)		(7.7	)		(5.7	)
Carrying amount at December 31, 2016	$	1,870.7		$	1,380.6		$	490.1
Acquisition		30.3			—			30.3
Goodwill impairment charge		(234.2	)		—			(234.2	)
Translation differences		22.0			16.5			5.5
Carrying amount at December 31, 2017	$	1,688.8		$	1,397.1		$	291.7

Schedule of Amortizable Intangibles

AMORTIZABLE INTANGIBLES	2017			2016
Gross carrying amount	$	628.7		$	618.2
Accumulated amortization		(463.9	)		(405.7	)
Carrying value	$	164.8		$	212.5