Restructuring Charges and Other Costs Associated with Acquisitions and Cost-Reduction/Productivity Initiatives - Restructuring Accruals - Footnotes (Detail) - USD ($) $ in Millions	Sep. 29, 2019		Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$ 734	[1]	$ 1,252	[2]
Other Current Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	535		823
Other Noncurrent Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$ 199		$ 428

[1] Included in Other current liabilities ($535 million) and Other noncurrent liabilities ($199 million).

[2] Included in Other current liabilities ($823 million) and Other noncurrent liabilities ($428 million).