Income Taxes (Detail) - USD ($) $ in Millions	3 Months Ended
Mar. 30, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Effective tax rate	22.00%	(7.00%)
Tax benefit related to lapse of statute of limitations	$ 2
Tax benefit related to excess tax benefits associated with share-based compensation	$ 1	$ 2
Tax benefit related to reduction of unrecognized tax benefit from receipt of written consent from IRS		$ 19

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

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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 excess tax benefit for share-based compensation cost.

+ References

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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