Effective Income Tax Rate Reconciliation, Coronavirus Aid, Relief, and Economic Security Act, Amount

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Effective Income Tax Rate Reconciliation, Discrete Tax Adjustments

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Effective Income Tax Rate Reconciliation, Return Of Provision Adjustments, Amount

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Effective Income Tax Rate Reconciliation, Statute Of Limitations, Amount

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Unrecognized Income Tax Expense, Change in Tax Regulations

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to expense for award under share-based payment arrangement. Excludes expense determined to be nondeductible upon grant or after for award under share-based payment arrangement.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to revisions of previously reported income tax expense (benefit).

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in income tax contingencies. Including, but not limited to, domestic tax contingency, foreign tax contingency, state and local tax contingency, and other contingencies.

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Income Taxes - Additional Information (Detail) - USD ($) $ in Millions		3 Months Ended
	Jun. 18, 2019	Mar. 31, 2020	Mar. 31, 2019
Income Tax Contingency [Line Items]
Effective income tax rate		13.80%	21.30%
Federal statutory income tax rate		21.00%	21.00%
Discrete tax benefit related to the statute of limitations		$ 15
Tax benefit due to prior period adjustments		8	$ (4)
Tax expense related to change in status of certain entities		27
Excess tax expense, share-based payment arrangement		7
Tax due to adoption of CARES Act		5
Discrete tax adjustments		10
Tax adjustment due to uncertain tax liabilities		$ 4
Minimum \| Internal Revenue Service \| 2018 Tax Year
Income Tax Contingency [Line Items]
Unrecognized income tax expense due to change in tax regulations	$ 180
Maximum \| Internal Revenue Service \| 2018 Tax Year
Income Tax Contingency [Line Items]
Unrecognized income tax expense due to change in tax regulations	$ 220