Fair Value Measurements - Nonrecurring (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Nov. 01, 2014		Nov. 02, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Tradename, impairments			$ 4
Impairment of assets held for sale			175
Continuing Operations [Member] | Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Property and equipment, impairments	28		37
Property and equipment, remaining net carrying value	17	[1]	0	[1]
Total impairments	28		57
Total remaining net carrying value	17	[1]	0	[1]
Investment Impairment Charges	0		16
Short-term investments	0		0
Discontinued Operations [Member] | Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Property and equipment, impairments	0	[2],[3]	220	[2],[3]
Property and equipment, remaining net carrying value	0	[1]	0	[1]
Total impairments	0		224
Total remaining net carrying value	0	[1]	0	[1]
Tradename [Member] | Discontinued Operations [Member] | Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Tradename, impairments	0	[2]	4	[2]
Tradename, remaining net carrying value	0	[1]	0	[1]
Property and equipment write-downs [Member] | Continuing Operations [Member] | Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Property and equipment, impairments	0	[4]	4	[4]
Property and equipment, remaining net carrying value	$ 0	[1],[4]	$ 0	[1],[4]

[1] Remaining net carrying value approximates fair value.

[2] Property and equipment and tradename impairments associated with discontinued operations are recorded within gain (loss) from discontinued operations in our Consolidated Statements of Earnings.

[3] Includes the $175 million impairment to write down the book value of our investment in Best Buy Europe to fair value based on expected net proceeds as described in Note 2, Discontinued Operations. The impairment was calculated based on the fair value and foreign currency translation adjustment associated with the business and was applied to the fixed assets.

[4] See Note 5, Restructuring Charges, for additional information.