Taxes (Tables)

12 Months Ended

Jan. 31, 2015

Income Tax Disclosure [Abstract]

Schedule of income before income tax, domestic and foreign

The components of income from continuing operations before income taxes are as follows:

	Fiscal Years Ended January 31,
(Amounts in millions)	2015		2014		2013
U.S.	$	18,610	$	19,412	$	19,352
Non-U.S.	6,189		5,244		6,310
Total income from continuing operations before income taxes	$	24,799	$	24,656	$	25,662

Schedule of components of income tax expense (benefit)

A summary of the provision for income taxes is as follows:

	Fiscal Years Ended January 31,
(Amounts in millions)	2015			2014			2013
Current:
U.S. federal	$	6,165		$	6,377		$	5,611
U.S. state and local	810			719			622
International	1,529			1,523			1,743
Total current tax provision	8,504			8,619			7,976
Deferred:
U.S. federal	(387		)	(72		)	38
U.S. state and local	(55		)	37			(8		)
International	(77		)	(479		)	(48		)
Total deferred tax expense (benefit)	(519		)	(514		)	(18		)
Total provision for income taxes	$	7,985		$	8,105		$	7,958

Schedule of effective income tax rate reconciliation

A reconciliation of the significant differences between the U.S. statutory tax rate and the effective income tax rate on pretax income from continuing operations is as follows:

	Fiscal Years Ended January 31,
	2015		2014		2013
U.S. statutory tax rate	35.0	%	35.0	%	35.0	%
U.S. state income taxes, net of federal income tax benefit	1.8	%	2.0	%	1.7	%
Income taxed outside the U.S.	(2.7	)%	(2.8	)%	(2.6	)%
Net impact of repatriated international earnings	(1.5	)%	(1.4	)%	(2.5	)%
Other, net	(0.4	)%	0.1	%	(0.6	)%
Effective income tax rate	32.2	%	32.9	%	31.0	%

Schedule of deferred tax assets and liabilities

The significant components of the Company's deferred tax account balances are as follows:

	January 31,
(Amounts in millions)	2015			2014
Deferred tax assets:
Loss and tax credit carryforwards	$	3,255		$	3,566
Accrued liabilities	3,395			2,986
Share-based compensation	184			126
Other	1,119			1,573
Total deferred tax assets	7,953			8,251
Valuation allowances	(1,504		)	(1,801		)
Deferred tax assets, net of valuation allowance	6,449			6,450
Deferred tax liabilities:
Property and equipment	5,972			6,295
Inventories	1,825			1,641
Other	1,618			1,827
Total deferred tax liabilities	9,415			9,763
Net deferred tax liabilities	$	2,966		$	3,313

Schedule of deferred taxes classification in consolidated balance sheets

The deferred taxes are classified as follows in the Company's Consolidated Balance Sheets:

	January 31,
(Amounts in millions)	2015		2014
Balance Sheet classification:
Assets:
Prepaid expenses and other	$	728	$	822
Other assets and deferred charges	1,033		1,151
Asset subtotals	1,761		1,973
Liabilities:
Accrued liabilities	56		176
Deferred income taxes and other	4,671		5,110
Liability subtotals	4,727		5,286
Net deferred tax liabilities	$	2,966	$	3,313

Summary of income tax contingencies

A reconciliation of unrecognized tax benefits from continuing operations was as follows:

	Fiscal Years Ended January 31,
(Amounts in millions)	2015			2014			2013
Unrecognized tax benefits, beginning of year	$	763		$	818		$	611
Increases related to prior year tax positions	7			41			88
Decreases related to prior year tax positions	(17		)	(112		)	(232		)
Increases related to current year tax positions	174			133			431
Settlements during the period	(89		)	(117		)	(80		)
Lapse in statutes of limitations	—			—			—
Unrecognized tax benefits, end of year	$	838		$	763		$	818