Restructuring, Impairment and Other - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2020
Restructuring Cost and Reserve [Line Items]
Approved restructuring plan				$ 1,800,000,000
Restructuring, impairment and other	$ 1,866,000,000	$ 342,000,000	$ 433,000,000
Inventory impairment	246,000,000	0	105,000,000
Restructuring charges	903,000,000	314,000,000	304,000,000
Intangible assets impairment	729,000,000	0	0
Property, plant and equipment impairment	461,000,000	107,000,000	80,000,000
Litigation and impairment of equity method investment	73,000,000
Corporate facility rationalization	61,000,000
Amortization expense for intangible assets included in net income	308,000,000	365,000,000	455,000,000
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring charges	14,000,000	22,000,000	31,000,000
Trade names and trademarks
Restructuring Cost and Reserve [Line Items]
Amortization expense for intangible assets included in net income		80,000,000
Oilfield Services
Restructuring Cost and Reserve [Line Items]
Intangible assets impairment	605,000,000
Oilfield Services | Operating segments
Restructuring Cost and Reserve [Line Items]
Restructuring charges	675,000,000	211,000,000	160,000,000
Oilfield Equipment
Restructuring Cost and Reserve [Line Items]
Intangible assets impairment	124,000,000
Other long-lived asset impairments	216,000,000
Property, plant and equipment impairment	77,000,000
Other assets	15,000,000
Oilfield Equipment | Operating segments
Restructuring Cost and Reserve [Line Items]
Restructuring charges	125,000,000	18,000,000	25,000,000
Restructuring, impairment and other
Restructuring Cost and Reserve [Line Items]
Other asset impairment charges and foreign currency translation gain (loss), realized	$ 963,000,000	28,000,000	$ 129,000,000
Restructuring, impairment and other | Corporate
Restructuring Cost and Reserve [Line Items]
Legal fees		25,000,000
Restructuring, impairment and other | Turbomachinery and Process Solutions and Oilfield Services | Operating segments
Restructuring Cost and Reserve [Line Items]
Business exit costs		$ 13,000,000