Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the Carrying Amount of Goodwill

The changes in the carrying amount of goodwill for the years ended December 31, 2018 and 2017 were as follows:

In millions	Automotive OEM			Test & Measurement and Electronics			Food Equipment			Polymers & Fluids			Welding			Construction Products			Specialty Products			Total
Balance, December 31, 2016	$	456		$	1,336		$	249		$	889		$	260		$	508		$	860		$	4,558
2017 activity:
Acquisitions & divestitures	—			—			—			—			—			—			1			1
Foreign currency translation	32			36			20			30			12			22			41			193
Balance, December 31, 2017	488			1,372			269			919			272			530			902			4,752
2018 activity:
Foreign currency translation	(12		)	(20		)	(10		)	(30		)	(9		)	(17		)	(21		)	(119		)
Balance, December 31, 2018	$	476		$	1,352		$	259		$	889		$	263		$	513		$	881		$	4,633
Cumulative goodwill impairment charges, December 31, 2018	$	24		$	83		$	60		$	15		$	5		$	7		$	46		$	240

Schedule of Finite-lived Intangible Assets

Intangible assets as of December 31, 2018 and 2017 were as follows:

	2018							2017
In millions	Cost		Accumulated Amortization			Net		Cost		Accumulated Amortization			Net
Amortizable intangible assets:
Customer lists and relationships	$	1,747	$	(1,282	)	$	465	$	1,753	$	(1,182	)	$	571
Trademarks and brands	759		(435		)	324		761		(391		)	370
Patents and proprietary technology	621		(506		)	115		623		(473		)	150
Other	478		(458		)	20		474		(453		)	21
Total amortizable intangible assets	3,605		(2,681		)	924		3,611		(2,499		)	1,112
Indefinite-lived intangible assets:
Trademarks and brands	160		—			160		160		—			160
Total intangible assets	$	3,765	$	(2,681	)	$	1,084	$	3,771	$	(2,499	)	$	1,272

Schedule of Indefinite-lived Intangible Assets

Intangible assets as of December 31, 2018 and 2017 were as follows:

	2018							2017
In millions	Cost		Accumulated Amortization			Net		Cost		Accumulated Amortization			Net
Amortizable intangible assets:
Customer lists and relationships	$	1,747	$	(1,282	)	$	465	$	1,753	$	(1,182	)	$	571
Trademarks and brands	759		(435		)	324		761		(391		)	370
Patents and proprietary technology	621		(506		)	115		623		(473		)	150
Other	478		(458		)	20		474		(453		)	21
Total amortizable intangible assets	3,605		(2,681		)	924		3,611		(2,499		)	1,112
Indefinite-lived intangible assets:
Trademarks and brands	160		—			160		160		—			160
Total intangible assets	$	3,765	$	(2,681	)	$	1,084	$	3,771	$	(2,499	)	$	1,272

Estimated Amortization Expense of Intangible Assets

The estimated amortization expense of intangible assets for the future years ending December 31 is as follows:

In millions
2019	$	163
2020	142
2021	124
2022	111
2023	92