Income taxes.

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- Definition

Tax cuts and jobs act, alternative minimum tax, credits refunded.

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Tax cuts and jobs act, alternative minimum tax, percentage of uncredited balances received by taxpayers.

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Tax cuts and jobs act, alternative minimum tax, tax year description.

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- Definition

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 decrease in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended				12 Months Ended
	Dec. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Mar. 30, 2019	Dec. 26, 2020
Income Taxes [Line Items]
Effective income tax rate reconciliation, at federal statutory income tax rate, percent			21.00%
Effective tax rate			32.00%	11.00%
Tax cuts and jobs act, alternative minimum tax, tax year description			For tax years 2018 through 2020, taxpayers could receive 50% of their uncredited balances as a cash refund with any remaining amounts refunded in full in 2021.
Tax cuts and jobs act, alternative minimum tax, percentage of uncredited balances received by taxpayers			50.00%
Decrease related to current year tax positions			$ 2
Scenario Forecast
Income Taxes [Line Items]
Tax cuts and jobs act, alternative minimum tax, percentage of uncredited balances received by taxpayers					100.00%
Tax cuts and jobs act, alternative minimum tax, credits refunded		$ 22			$ 44
Maximum \| Scenario Forecast
Income Taxes [Line Items]
Tax cuts and jobs act, alternative minimum tax, credits refunded	$ 22