Restructuring Charges - Fiscal 2013 U.S. (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended						3 Months Ended	8 Months Ended	9 Months Ended		8 Months Ended	9 Months Ended	8 Months Ended	9 Months Ended							21 Months Ended	9 Months Ended		21 Months Ended	9 Months Ended		21 Months Ended	9 Months Ended		21 Months Ended
	Nov. 02, 2013	Nov. 03, 2012	Nov. 02, 2013	Nov. 03, 2012	Nov. 02, 2013 Termination benefits [Member]		Nov. 02, 2013 Facility closure and other costs [Member]	Nov. 03, 2012 Facility closure and other costs [Member]	May 05, 2012 Restructuring Charges 2013 [Member] Domestic [Member] store	Nov. 03, 2012 Restructuring Program 2013 U.S. [Member]	Nov. 02, 2013 Restructuring Program 2013 U.S. [Member]	Nov. 03, 2012 Restructuring Program 2013 U.S. [Member]	Nov. 03, 2012 Restructuring Program 2013 U.S. [Member] Termination benefits [Member]	Nov. 02, 2013 Restructuring Program 2013 U.S. [Member] Termination benefits [Member]	Nov. 03, 2012 Restructuring Program 2013 U.S. [Member] Facility closure and other costs [Member]	Nov. 02, 2013 Restructuring Program 2013 U.S. [Member] Facility closure and other costs [Member]	Nov. 02, 2013 Continuing Operations [Member]	Nov. 03, 2012 Continuing Operations [Member]	Nov. 02, 2013 Continuing Operations [Member] Restructuring Program 2013 U.S. [Member]	Nov. 03, 2012 Continuing Operations [Member] Restructuring Program 2013 U.S. [Member]	Nov. 02, 2013 Continuing Operations [Member] Restructuring Program 2013 U.S. [Member] Domestic [Member]	Nov. 03, 2012 Continuing Operations [Member] Restructuring Program 2013 U.S. [Member] Domestic [Member]	Nov. 02, 2013 Continuing Operations [Member] Restructuring Program 2013 U.S. [Member] Domestic [Member]	Nov. 02, 2013 Continuing Operations [Member] Restructuring Program 2013 U.S. [Member] Domestic [Member] Property and equipment impairments [Member]	Nov. 03, 2012 Continuing Operations [Member] Restructuring Program 2013 U.S. [Member] Domestic [Member] Property and equipment impairments [Member]	Nov. 02, 2013 Continuing Operations [Member] Restructuring Program 2013 U.S. [Member] Domestic [Member] Property and equipment impairments [Member]	Nov. 02, 2013 Continuing Operations [Member] Restructuring Program 2013 U.S. [Member] Domestic [Member] Termination benefits [Member]	Nov. 03, 2012 Continuing Operations [Member] Restructuring Program 2013 U.S. [Member] Domestic [Member] Termination benefits [Member]	Nov. 02, 2013 Continuing Operations [Member] Restructuring Program 2013 U.S. [Member] Domestic [Member] Termination benefits [Member]	Nov. 02, 2013 Continuing Operations [Member] Restructuring Program 2013 U.S. [Member] Domestic [Member] Facility closure and other costs [Member]	Nov. 03, 2012 Continuing Operations [Member] Restructuring Program 2013 U.S. [Member] Domestic [Member] Facility closure and other costs [Member]	Nov. 02, 2013 Continuing Operations [Member] Restructuring Program 2013 U.S. [Member] Domestic [Member] Facility closure and other costs [Member]
Restructuring Cost and Reserve [Line Items]
Number of stores to be closed									49
Restructuring charges			$ 144	$ 251							$ (8)	$ 258					$ 44	$ 252	$ (8)	$ 258	$ (8)	$ 258	$ 249	$ 0	$ 28	$ 29	$ 0	$ 83	$ 77	$ (8)	$ 147	$ 143
Restructuring Reserve [Roll Forward]
Restructuring reserve, balance at the beginning of the period										0	117		0	4	0	113
Charges	31	34	44	252						254	3		109	0	145	3
Cash payments										(83)	(41)		(65)	(2)	(18)	(39)
Adjustments					(34)	[1]	0	34		(34)	(15)		(31)	(2)	(3)	(13)
Restructuring reserve, balance at the end of the period										$ 137	$ 64	$ 137	$ 13	$ 0	$ 124	$ 64

[1] Represents the remaining liability written off as a result of the sale of Best Buy Europe, as described in Note 2, Discontinued Operations.