Goodwill and Intangible Assets

6 Months Ended

Jun. 30, 2019

Goodwill And Intangible Assets Disclosure [Abstract]

11. Goodwill and Intangible Assets

Changes in goodwill from January 1, 2019 through June 30, 2019 were as follows:

	Power Transmission Technologies			Automation & Specialty			Total
Net goodwill balance January 1, 2019	$	410.2		$	1,252.1		$	1,662.3
Measurement period adjustment related to acquisition of A&S		—			29.1			29.1
Impact of changes in foreign currency		(0.4	)		(4.9	)		(5.3	)
Net goodwill balance June 30, 2019	$	409.8		$	1,276.3		$	1,686.1

Other intangible assets as of June 30, 2019 and December 31, 2018 consisted of the following:

	June 30, 2019						December 31, 2018
	Cost		Accumulated Amortization		Net		Cost		Accumulated Amortization		Net
Other intangible assets
Intangible assets not subject to amortization:
Tradenames and trademarks	$	261.6	$	—	$	261.6	$	262.0	$	—	$	262.0
In-process research and development		16.0		—		16.0		16.0		—		16.0
Intangible assets subject to amortization:
Customer relationships		1,195.6		113.6		1,082.0		1,196.4		91.0		1,105.4
Product technology and patents		210.1		23.2		186.9		212.9		10.6		202.3
Total intangible assets	$	1,683.3	$	136.8	$	1,546.5	$	1,687.3	$	101.6	$	1,585.7

The Company recorded $17.6 million and $2.4 million of amortization expense in the quarters ended June 30, 2019 and 2018, respectively; and, recorded $35.4 million and $4.9 million of amortization expense in the year to date periods ended June 30, 2019 and 2018.

The estimated amortization expense for intangible assets is approximately $35.4 million for the remainder of 2019, $70.7 million in each of the next four years and then $950.7 million thereafter.