Pension And Postretirement Benefits (Schedule of Estimated Future Benefit Payments) (Details) $ in Millions	Aug. 02, 2015 USD ($)
Pension Plan, Defined Benefit [Member]
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months	$ 246
Defined Benefit Plan, Expected Future Benefit Payments, Year Two	169
Defined Benefit Plan, Expected Future Benefit Payments, Year Three	165
Defined Benefit Plan, Expected Future Benefit Payments, Year Four	168
Defined Benefit Plan, Expected Future Benefit Payments, Year Five	165
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter	828
Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months	30
Defined Benefit Plan, Expected Future Benefit Payments, Year Two	31
Defined Benefit Plan, Expected Future Benefit Payments, Year Three	31
Defined Benefit Plan, Expected Future Benefit Payments, Year Four	31
Defined Benefit Plan, Expected Future Benefit Payments, Year Five	31
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter	$ 141

Amount of benefits from a defined benefit plan expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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- Definition

Amount of benefits from a defined benefit plan expected to be paid in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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- Definition

Amount of benefits from a defined benefit plan expected to be paid in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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- Definition

Amount of benefits from a defined benefit plan expected to be paid in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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- Definition

Amount of benefits from a defined benefit plan expected to be paid in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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- Definition

Amount of benefits from a defined benefit plan expected to be paid in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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