Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2021

Goodwill is identified by segment as follows (in millions):

	Wellbore Technologies			Completion & Production Solutions			Rig Technologies			Total
Balance at December 31, 2019		843			1,054			910			2,807
Goodwill acquired during period		4			—			—			4
Impairment		(517	)		(580	)		(198	)		(1,295	)
Currency translation adjustments and other		(22	)		(1	)		—			(23	)
Balance at December 31, 2020	$	308		$	473		$	712		$	1,493
Goodwill acquired during period		34			—			—			34
Balance at December 31, 2021 (1)	$	342		$	473		$	712		$	1,527

(1)	Accumulated goodwill impairment was $7,261 million as of December 31, 2021.

The net book values of identified intangible assets are identified by segment as follows (in millions):

	Wellbore Technologies			Completion & Production Solutions			Rig Technologies			Total
Balance at December 31, 2019	$	326		$	275		$	251		$	852
Additions to intangible assets		20			—			—			20
Impairment		(78	)		(214	)		—			(292	)
Amortization		(12	)		(9	)		(28	)		(49	)
Currency translation adjustments		(3	)		(5	)		4			(4	)
Balance at December 31, 2020	$	253		$	47		$	227		$	527
Additions to intangible assets		22			—			—			22
Amortization		(10	)		(5	)		(28	)		(43	)
Currency translation adjustments		(1	)		—			(2	)		(3	)
Balance at December 31, 2021	$	264		$	42		$	197		$	503

Identified intangible assets by major classification consist of the following (in millions):

	Gross		Accumulated Amortization			Net Book Value
December 31, 2020:
Customer relationships	$	475	$	(300	)	$	175
Trademarks		175		(116	)		59
Patents		115		(53	)		62
Indefinite-lived trade names		196		—			196
Other		94		(59	)		35
Total identified intangibles	$	1,055	$	(528	)	$	527
December 31, 2021:
Customer relationships	$	471	$	(323	)	$	148
Trademarks		174		(122	)		52
Patents		145		(59	)		86
Indefinite-lived trade names		196		—			196
Other		82		(61	)		21
Total identified intangibles	$	1,068	$	(565	)	$	503