Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2017	Dec. 30, 2016	Dec. 31, 2017	Dec. 30, 2016	Mar. 31, 2018	Apr. 01, 2017
Income Tax Contingency [Line Items]
Provisional deferred income tax discrete benefit			$ 320
Provisional income tax benefit			320
Estimated transition tax			386
Income tax (benefit) expense	$ (341)	$ 13	(207)	$ (25)
Settlement with Taxing Authority | Minimum
Income Tax Contingency [Line Items]
Reasonably possible reduction in liability for uncertain tax positions	14		14
Settlement with Taxing Authority | Maximum
Income Tax Contingency [Line Items]
Reasonably possible reduction in liability for uncertain tax positions	20		20
India
Income Tax Contingency [Line Items]
Deferred tax liability	80		80			$ 50
Undistributed accumulated earnings of foreign subsidiary, provisional unrecognized deferred tax liability	30		30
Provisional estimate for withholdings taxes, state taxes, and India DDT as a result of the Act	115		115
HPES
Income Tax Contingency [Line Items]
Net taxes payable						24
Tax indemnification receivable, net uncertain tax positions						111
Tax indemnification receivable, other tax payables						72
Tax indemnification payable, other tax receivables						207
Liability for uncertain tax positions						115
Domestic Tax Authority | HPES
Income Tax Contingency [Line Items]
Deferred tax liability	$ 575		$ 575			$ 545
Forecast
Income Tax Contingency [Line Items]
Estimated blended corporate U.S. federal income tax rate					28.87%