Restructuring, Impairment and Other - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Restructuring and Related Activities [Abstract]
Approved a restructuring plan	$ 1,800
Inventory impairment	160	$ 0
Restructuring Cost and Reserve [Line Items]
Other charges	890
Intangible assets impairment	725	0
Property, plant and equipment impairment	218	$ 0
Litigation and impairment of equity method investment	73
Oilfield Services
Restructuring Cost and Reserve [Line Items]
Intangible assets impairment	601
Oilfield Equipment
Restructuring Cost and Reserve [Line Items]
Intangible assets impairment	124
Other long-lived asset impairments	216
Property, plant and equipment impairment	77
Other assets	$ 15