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Segments - Summary of Profit by Segments and Reconciliation of Segments Profit to Consolidated Income Before Income Taxes (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019		Mar. 31, 2018
Amounts allocated to segments:
Segment profit	$ 134		$ 1,525
Amounts not allocated to segments:
Amortization	283		310
Other assets impairments, restructuring and other items	1		501
Goodwill impairment			180
Intangible asset impairments	469		206
Gain on divestitures, net of divestitures related costs		[1]	(93)
Other R&D expenses		[1]	22
Costs related to regulatory actions taken in facilities	4		1
Legal settlements and loss contingencies	57		(1,278)
Other unallocated amounts	70		61
Consolidated operating income (loss)	134		1,525
Financial expenses, net	218		271
Consolidated income (loss) before income taxes	(84)		1,254
North America [Member]
Amounts allocated to segments:
Segment profit	498		915
Amounts not allocated to segments:
Consolidated operating income (loss)	498		915
Europe [Member]
Amounts allocated to segments:
Segment profit	403		377
Amounts not allocated to segments:
Consolidated operating income (loss)	403		377
International Markets [Member]
Amounts allocated to segments:
Segment profit	97		122
Amounts not allocated to segments:
Consolidated operating income (loss)	97		122
Corporate Segment [Member]
Amounts allocated to segments:
Segment profit	998		1,414
Amounts not allocated to segments:
Consolidated operating income (loss)	998		1,414
Other Segments [Member]
Amounts allocated to segments:
Segment profit	21		21
Amounts not allocated to segments:
Consolidated operating income (loss)	21		21
Segments and Other Activities [Member]
Amounts allocated to segments:
Segment profit	1,019		1,435
Amounts not allocated to segments:
Consolidated operating income (loss)	$ 1,019		$ 1,435
[1] Represents an amount less than $0.5 million.

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The net proceeds or assets obtained in excess of (less than) the net carrying amount of assets recorded, or assets distributed and liabilities assumed less than (in excess of) litigation reserves extinguished, in settlement of a litigation matter. Represents (for other than an insurance entity in its normal claims settlement process), the amount of income (expense) recognized in the period to settle pending or threatened litigation and insurance claims and the aggregate amount provided for estimated restructuring charges, remediation costs, and asset impairment loss during an accounting period. Generally, these items are either unusual or infrequent, but not both (in which case they would be extraordinary items).

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