Restructuring Charges - Fiscal 2012 (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended									32 Months Ended	9 Months Ended		32 Months Ended		9 Months Ended
	Nov. 01, 2014		Nov. 02, 2013		Nov. 01, 2014		Nov. 02, 2013		Nov. 01, 2014 Continuing Operations [Member]	Nov. 02, 2013 Continuing Operations [Member]	Nov. 01, 2014 Discontinued Operations [Member]	Nov. 02, 2013 Discontinued Operations [Member]	Nov. 02, 2013 Restructuring Program 2012 [Member]	Nov. 01, 2014 Restructuring Program 2012 [Member]	Nov. 02, 2013 Restructuring Program 2012 [Member] Facility closure and other costs [Member]		Nov. 01, 2014 Restructuring Program 2012 [Member] Domestic [Member]	Nov. 01, 2014 Restructuring Program 2012 [Member] International [Member]	Nov. 01, 2014 Restructuring Program 2012 [Member] Discontinued Operations [Member]	Nov. 02, 2013 Restructuring Program 2012 [Member] Discontinued Operations [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0	[1]	$ 0	[1]	$ 0	[1]	$ 100	[1]			$ 0	$ 100	$ 5	$ 5					$ 0	$ 5
Cumulative Amount														246			22	224
Restructuring Reserve [Roll Forward]
Restructuring reserve, balance at the beginning of the period															36
Restructuring charges					17		144		17	44
Cash payments															(33)
Adjustments															(1)	[2]
Changes in foreign currency exchange rates															(2)
Restructuring reserve, balance at the end of the period															0
Restructuring Reserve, Accrual Adjustment, Write-off Related to Sale of Business														$ (6)

[1] See Note 5, Restructuring Charges, for further discussion of the restructuring charges associated with discontinued operations.

[2] (1)Included within Adjustments is a $5 million charge related to a change in sublease assumptions, offset by a $6 million adjustment to write off the remaining liability as a result of the sale of Best Buy Europe, as described in Note 2, Discontinued Operations.