Restructuring, Impairment and Other - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring, impairment and other	$ 125	$ 103	$ 205	$ 1,429
Intangible assets impairment			0	725
Property, plant and equipment impairment			22	226
Litigation and impairment of equity method investment				73
OFS
Restructuring Cost and Reserve [Line Items]
Intangible assets impairment				601
OFE
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
Restructuring Impairmentand Other Charges
Restructuring Cost and Reserve [Line Items]
Other asset impairment charges and foreign currency translation gain (loss), realized	$ 60	$ 61	$ 75	$ 951