Unrecognized cost of unvested share-based compensation awards.

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Amount of cash outflow for realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-SubTopic 20
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-Paragraph 24
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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

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- Definition

The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

+ References

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- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Percentage of vesting of share-based compensation awards.

+ References

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- Definition

Number of share options (or share units) exercised during the current period.

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Stock-based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Oct. 28, 2018	Oct. 29, 2017	Jan. 27, 2019	Jan. 28, 2018	Jul. 29, 2018
Stock-based Compensation
Exercised, Options			0	0
Excess Tax Benefit/(Deficiency) from Share-based Compensation, Operating Activities			$ (2)	$ 4
Employee Stock Option [Member]
Stock-based Compensation
Remaining unearned compensation on nonvested awards			$ 3
Weighted-average remaining service period, years			2 years 5 months
EPS Performance Restricted Stock Units [Member]
Stock-based Compensation
Nonvested, Units			66
Nonvested, Weighted-Average Grant-Date Fair Value			$ 49.10
EPS Performance Restricted Stock Units [Member] \| Minimum [Member]
Stock-based Compensation
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage			0.00%
EPS Performance Restricted Stock Units [Member] \| Maximum [Member]
Stock-based Compensation
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage			100.00%
Time Lapse and EPS Restricted Stock Units [Member]
Stock-based Compensation
Remaining unearned compensation on nonvested awards			$ 47
Weighted-average remaining service period, years			1 year 11 months
Nonvested, Units			1,994		1,652
Nonvested, Weighted-Average Grant-Date Fair Value			$ 40.98		$ 47.01
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			1,171
Granted, Weighted-Average Grant-Date Fair Value			$ 36.35	$ 46.95
Fair value of restricted units and shares vested			$ 24	$ 30
FCF Performance Restricted Stock Units [Member]
Stock-based Compensation
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			388
FCF Performance Restricted Stock Units [Member] \| Minimum [Member]
Stock-based Compensation
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage			0.00%
FCF Performance Restricted Stock Units [Member] \| Maximum [Member]
Stock-based Compensation
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage			200.00%
TSR Performance Restricted Stock/Units [Member]
Stock-based Compensation
Remaining unearned compensation on nonvested awards			$ 21
Weighted-average remaining service period, years			1 year 11 months
Nonvested, Units			1,363		1,664
Nonvested, Weighted-Average Grant-Date Fair Value			$ 37.28		$ 46.66
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	0.00%	125.00%
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			388
Granted, Weighted-Average Grant-Date Fair Value			$ 31.29	$ 39.39
Fair value of restricted units and shares vested				$ 38
T S R Performance Restricted Stock Units Additional Shares [Member]
Stock-based Compensation
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		160