Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Sep. 28, 2018	Sep. 29, 2017	Sep. 28, 2018	Sep. 29, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Effect of Tax Cuts and Jobs Act of 2017, amount	$ 29		$ 24
Effect of Tax Cuts and Jobs Act of 2017, Impact on effective rate, percent	104.30%		(59.90%)
Decrease in Unrecognized Tax Benefits is Reasonably Possible	$ 13		$ 13
Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income tax expense	$ 4	$ 4	$ 4	$ 37

Effective Income Tax Rate Reconciliation, Effect of Tax Cuts and Jobs Act of 2017, Amount

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- Definition

Effective Income Tax Rate Reconciliation, Effect of Tax Cuts and Jobs Act of 2017, Temporary Differences Impact on Effective Rate, Percent

+ References

No definition available.

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- Definition

Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
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- Definition

Amount of tax expense (benefit) attributable to income (loss) from operations classified as a discontinued operation. Excludes tax expense (benefit) for gain (loss) on disposal and for provision for gain (loss) until disposal.

+ References

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