Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Significant Accounting Policies [Line Items]
Maturity period of investments description	three months or less
Additional inventory reserve charges	$ 356	$ 659	$ 49
Inventory reserves total	$ 577	$ 843
Percentage of inventory reserve	29.00%	27.70%
Depreciation expense related to property, plant and equipment	$ 302	$ 355	349
Impairment of long-lived assets	513	2,209
Asset impairment charges	42	56	0
Cash payment for acquisition	14	180	280
Net foreign currency transaction gains (losses)	(2)	(36)	$ (52)
Net revenue recognized from performance obligations satisfied in previous periods	41	62
Remaining performance obligations	3,693
Net allowances for doubtful accounts	$ 100	$ 132
Anti-dilutive stock options outstanding	26	20	20
ASU 2016-13 [Member]
Significant Accounting Policies [Line Items]
Allowance for bad debts and contract assets	$ 102
Property, Plant and Equipment [Member]
Significant Accounting Policies [Line Items]
Impairment of long-lived assets	$ 262	$ 252	$ 21
Minimum [Member]
Significant Accounting Policies [Line Items]
Derivative, term of contract	2 months
Maximum [Member]
Significant Accounting Policies [Line Items]
Derivative, term of contract	24 months