Fair Value Measurements (Tables)

3 Months Ended

Apr. 30, 2016

Fair Value Disclosures [Abstract]

Financial Assets And Liabilities Measured At Fair Value On Recurring Basis

Financial assets and liabilities measured at fair value on a recurring basis and cash equivalents are as follows:

			Fair Value Measurements at Reporting Date Using
($ in millions)	April 30, 2016		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents	$	589	$	131	$	458	$	—
Derivative financial instruments	18		—		18		—
Deferred compensation plan assets	40		40		—		—
Total	$	647	$	171	$	476	$	—
Liabilities:
Derivative financial instruments	$	85	$	—	$	85	$	—
			Fair Value Measurements at Reporting Date Using
($ in millions)	January 30, 2016		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents	$	517	$	204	$	313	$	—
Derivative financial instruments	93		—		93		—
Deferred compensation plan assets	37		37		—		—
Total	$	647	$	241	$	406	$	—
Liabilities:
Derivative financial instruments	$	3	$	—	$	3	$	—
			Fair Value Measurements at Reporting Date Using
($ in millions)	May 2, 2015		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant  Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents	$	201	$	72	$	129	$	—
Derivative financial instruments	118		—		118		—
Deferred compensation plan assets	45		45		—		—
Total	$	364	$	117	$	247	$	—
Liabilities:
Derivative financial instruments	$	13	$	—	$	13	$	—