Segments - Summary of Profit by Segments and Reconciliation of Segments Profit to Consolidated Income Before Income Taxes (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Amounts allocated to segments:
Segments profit	$ 173	$ (644)	$ 364	$ (510)
Amounts not allocated to segments:
Amortization	249	285	507	568
Other assets impairments, restructuring and other items	381	101	502	103
Intangible asset impairments	120	561	768	1,030
Legal settlements and loss contingencies	13	646	(12)	703
Other unallocated amounts	44	62	93	136
Consolidated operating income (loss)	173	(644)	364	(510)
Financial expenses, net	223	206	448	425
Income (loss) before income taxes	(51)	(850)	(84)	(934)
North America [Member]
Amounts allocated to segments:
Segments profit	573	504	1,123	1,001
Amounts not allocated to segments:
Consolidated operating income (loss)	573	504	1,123	1,001
Europe [Member]
Amounts allocated to segments:
Segments profit	244	316	746	719
Amounts not allocated to segments:
Consolidated operating income (loss)	244	316	746	719
International Markets [Member]
Amounts allocated to segments:
Segments profit	97	136	253	233
Amounts not allocated to segments:
Consolidated operating income (loss)	97	136	253	233
Corporate Segment [Member]
Amounts allocated to segments:
Segments profit	914	956	2,121	1,954
Amounts not allocated to segments:
Consolidated operating income (loss)	914	956	2,121	1,954
Other Segments [Member]
Amounts allocated to segments:
Segments profit	66	55	102	76
Amounts not allocated to segments:
Consolidated operating income (loss)	66	55	102	76
Segments and Other Activities [Member]
Amounts allocated to segments:
Segments profit	979	1,011	2,223	2,029
Amounts not allocated to segments:
Consolidated operating income (loss)	$ 979	$ 1,011	$ 2,223	$ 2,029

Amounts allocated to segments.

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Amounts not allocated to segments.

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Impairments restructuring and others.

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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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Other unallocated amounts.

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The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

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Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

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The net result for the period of deducting operating expenses from operating revenues.

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