Taxes on Earnings Schedule Of Reconciliation Of Effective Income Tax Rate (Details) - USD ($) $ in Millions			5 Months Ended	12 Months Ended
	Jul. 30, 2018	Jan. 01, 2018	Dec. 31, 2017	Jul. 29, 2018		Jul. 30, 2017		Jul. 31, 2016
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent				21.00%		35.00%		35.00%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent				4.30%		2.10%		2.70%
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent				2.60%		(2.10%)		(3.00%)
Effective Income Tax Rate Reconciliation, Tax Settlement, Percent				(6.20%)		0.00%		0.00%
Effective Income Tax Rate Reconciliation, Deduction, Qualified Production Activity, Percent				(4.00%)		(2.10%)		(3.20%)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Percent				18.70%		3.40%		4.30%
Effective Income Tax Rate Reconciliation,Other Reconciling Items, Percent				0.00%		0.00%		(0.80%)
Effective Income Tax Rate Reconciliation, Deferred Taxes, Tax Cuts and Jobs Act 2017, Percent				(66.30%)	[1]	0.00%		0.00%
Effective Income Tax Rate Reconciliation, Transition Tax On Unremitted Foreign Earnings				19.60%	[1]	0.00%		0.00%
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent				13.20%	[1]	0.00%		0.00%
Effective Income Tax Rate Reconciliation, Foreign Exchange Losses, Percent				0.00%		(3.90%)	[2]	0.00%
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent				1.10%		(1.00%)		(1.30%)
Effective Income Tax Rate Reconciliation, Percent				4.00%		31.40%		33.70%
Taxes on earnings				$ 11		$ 406		$ 286
Sale of Intercompany Notes [Member]
Taxes on earnings						$ (52)
Tax Cut and Jobs Act 2017 [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		21.00%	35.00%
Scenario, Forecast [Member] | Tax Cut and Jobs Act 2017 [Member]
Tax Cuts and Jobs Act of 2017, Limiting Interest Expense Deductibility, Percent	30.00%

[1] The Tax Cuts and Jobs Act of 2017 (the Act) was enacted into law on December 22, 2017, and made significant changes to corporate taxation. Changes under the Act include:•Reducing the federal corporate tax rate from 35% to 21% effective January 1, 2018. A blended rate will apply for fiscal 2018 non-calendar year end companies for the fiscal periods that include the effective date of the rate change. The impact of this is shown as "Effect of higher U.S. federal statutory tax rate";•Repealing the exception for deductibility of performance-based compensation to covered employees, which impacts us beginning in 2019, along with expanding the number of covered employees;•Transitioning to a territorial system for taxation on foreign earnings along with the imposition of a transition tax in 2018 on the deemed repatriation of unremitted foreign earnings; •Immediate expensing of machinery and equipment placed into service after September 27, 2017;•Eliminating the deduction for domestic manufacturing activities, which impacts us beginning in 2019; •Changes to the taxation of multinational companies, including a new minimum tax on Global Intangible Low-Taxed Income, a new Base Erosion Anti-Abuse Tax, and a new U.S. corporate deduction for Foreign-Derived Intangible Income, all of which are effective for us beginning in 2019; and•Limiting the deductibility of interest expense to 30% of adjusted taxable income, which is effective for us beginning in 2019.

[2] The 2017 rate was favorably impacted by a $52 benefit primarily related to the sale of intercompany notes receivable to a financial institution, which resulted in the recognition of foreign exchange losses.