Details of Cash From Operating Activities - Details of Items Not Involving Current Cash Flows (Detail) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Statement of Cash Flows [Abstract]
Depreciation and amortization	$ 1,366	$ 1,345
Amortization of other assets included in cost of goods sold	215	257
Impairment charges [note 2]	435	727
Other non-cash charges	66	89
Deferred income taxes [note 10]	17	7
Equity income in excess of dividends received	(10)	0
Dividends received in excess of equity income		69
Non-cash portion of Other expense, net [note 2]	(24)	(518)
Items not involving current cash flows	$ 2,065	$ 1,976

Deferred income tax expense benefit items not involving current cash flows.

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- Definition

Equity income in excess of dividends received.

+ References

No definition available.

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The aggregate amount of adjustments to net income or loss necessary to remove the effects of all items whose cash effects are investing or financing cash flows. The aggregate amount also includes all noncash expenses and income items which reduce or increase net income and are thus added back or deducted when calculating cash provided by or used in operating activities.

+ References

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-Publisher FASB
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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount of expense for allocation of cost of tangible asset over its useful life directly used in production of good and rendering of service.

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The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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This element represents the undistributed income (or loss) of equity method investments, net of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporations; such investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities.

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Amount of expense or loss included in net income that result in no cash flow, classified as other.

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Amount of income (expense) included in net income that results in no cash inflow (outflow), classified as other.

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