5. Goodwill & Intangibles

The Company operates in three geographic segments: Americas, Europe, and APMEA. The changes in the carrying amount of goodwill by geographic segment are as follows:


	March 31, 2019
	Gross Balance								Accumulated Impairment Losses						Net Goodwill
			Acquired		Foreign
	Balance		During		Currency		Balance		Balance		Impairment		Balance
	January 1,		the		Translation		March 31,		January 1,		Loss During		March 31,		March 31,
	2019		Period		and Other		2019		2019		the Period		2019		2019
	(in millions)
Americas	$	438.1		—	$	0.1	$	438.2	$	(24.5)		—	$	(24.5)	$	413.7
Europe		243.7		—		(2.0)		241.7		(129.7)		—		(129.7)		112.0
APMEA		30.1		—		0.1		30.2		(12.9)		—		(12.9)		17.3
Total	$	711.9		—	$	(1.8)	$	710.1	$	(167.1)		—	$	(167.1)	$	543.0


	December 31, 2018
	Gross Balance								Accumulated Impairment Losses						Net Goodwill
			Acquired		Foreign
	Balance		During		Currency		Balance		Balance		Impairment		Balance
	January 1,		the		Translation		December 31,		January 1,		Loss During		December 31,		December 31,
	2018		Period		and Other		2018		2018		the Period		2018		2018
	(in millions)
Americas	$	437.4	$	1.5	$	(0.8)	$	438.1	$	(24.5)	$	—	$	(24.5)	$	413.6
Europe		249.3		—		(5.6)		243.7		(129.7)		—		(129.7)		114.0
APMEA		30.9		—		(0.8)		30.1		(12.9)		—		(12.9)		17.2
Total	$	717.6	$	1.5	$	(7.2)	$	711.9	$	(167.1)	$	—	$	(167.1)	$	544.8

Intangible assets include the following:


	March 31, 2019						December 31, 2018
	Gross				Net		Gross				Net
	Carrying		Accumulated		Carrying		Carrying		Accumulated		Carrying
	Amount		Amortization		Amount		Amount		Amortization		Amount
	(in millions)
Patents	$	16.1	$	(15.8)	$	0.3	$	16.1	$	(15.8)	$	0.3
Customer relationships		232.9		(149.3)		83.6		232.9		(146.9)		86.0
Technology		54.6		(28.3)		26.3		54.6		(27.3)		27.3
Trade names		26.1		(11.9)		14.2		26.1		(11.5)		14.6
Other		4.3		(3.6)		0.7		4.3		(3.5)		0.8
Total amortizable intangibles		334.0		(208.9)		125.1		334.0		(205.0)		129.0
Indefinite-lived intangible assets		35.9		—		35.9		36.2		—		36.2
	$	369.9	$	(208.9)	$	161.0	$	370.2	$	(205.0)	$	165.2

Aggregate amortization expense for amortized intangible assets for the first quarters of 2019 and 2018 was $3.9 million and $5.6 million, respectively.