GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2020

Business Combinations [Abstract]

Changes in Goodwill Balances

CHANGES IN GOODWILL BALANCES
			2019								2020
	Balance at December 31, 2018		Dispositions		Impairments		Currency exchange and other		Balance at December 31, 2019		Acquisitions		Impairments		Currency exchange and other		Balance at December 31, 2020
Power	$	139	$	—	$	—	$	6	$	145	$	—	$	—	$	—	$	146
Renewable Energy	4,730		—		(1,486)		46		3,290		—		—		111		3,401
Aviation	9,839		—		—		20		9,859		—		(877)		266		9,247
Healthcare	17,226		(5,558)		—		60		11,728		89		—		37		11,855
Capital	904		(39)		—		(26)		839		—		(839)		—		—
Corporate(a)	1,136		—		—		(262)		873		—		—		2		876
Total	$	33,974	$	(5,597)	$	(1,486)	$	(156)	$	26,734	$	90	$	(1,717)	$	417	$	25,524

(a) Corporate balance at December 31, 2020 and 2019 is our Digital business.

Intangible Assets Subject to Amortization

		2020						2019
INTANGIBLE ASSETS SUBJECT TO AMORTIZATION December 31	Useful lives (in years)	Gross carrying amount		Accumulated amortization		Net		Gross carrying amount		Accumulated amortization		Net
Customer-related(a)	3 - 30	$	6,862	$	(3,432)	$	3,430	$	6,770	$	(3,070)	$	3,701
Patents and technology	2 - 25	8,191		(4,135)		4,056		8,180		(3,730)		4,450
Capitalized software	3 - 10	5,826		(3,840)		1,986		5,822		(3,651)		2,171
Trademarks & other	3 - 50	778		(477)		301		737		(406)		332
Total		$	21,657	$	(11,883)	$	9,774	$	21,510	$	(10,857)	$	10,653

(a) Balance includes payments made to our customers, primarily within our Aviation business.

Estimated 5 Year Consolidation Amortization

Estimated consolidated annual pre-tax amortization for intangible assets over the next five calendar years are as follows:

ESTIMATED 5 YEAR CONSOLIDATED AMORTIZATION	2021		2022		2023		2024		2025
Estimated annual pre-tax amortization	$	1,162	$	1,085	$	992	$	889	$	817