Best Buy (BBY) 10-Q 8 Jun 15 2016 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information Document	3 Months Ended
	2-May-15	29-May-15
Document Information [Line Items]
Entity Registrant Name	BEST BUY CO INC
Entity Central Index Key	764478
Document Type	10-Q
Document Period End Date	2-May-15
Amendment Flag	FALSE
Current Fiscal Year End Date	-29
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		352,771,360
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q1

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	2-May-15		Jan. 31, 2015	3-May-14
In Millions, unless otherwise specified
Current assets
Cash and cash equivalents	$2,173		$2,432	$2,569
Short-term investments	1,566		1,456	497
Receivables, net	995		1,280	871
Merchandise inventories	4,930		5,174	5,255
Other current assets	732		703	926
Current assets held for sale	0		684	0
Total current assets	10,396		11,729	10,118
Property and equipment, net	2,244		2,295	2,525
Goodwill	425		425	425
Intangibles, net	18		57	100
Other assets	603		583	743
Non-current assets held for sale	33		167	0
Total assets	13,719		15,256	13,911
Current liabilities
Accounts payable	4,584		5,030	4,952
Unredeemed gift card liabilities	385		411	362
Deferred revenue	304		326	394
Accrued compensation and related expenses	277		372	350
Accrued liabilities	743		782	731
Accrued income taxes	45		230	47
Current portion of long-term debt	383	[1]	41	44
Current liabilities held for sale	0		585	0
Total current liabilities	6,721		7,777	6,880
Long-term liabilities	906		881	1,003
Long-term debt	1,224		1,580	1,604
Long-term liabilities held for sale	0		18	0
Best Buy Co., Inc. shareholders’ equity
Preferred stock, $1.00 par value: Authorized — 400,000 shares; Issued and outstanding — none	0		0	0
Common stock, $0.10 par value: Authorized — 1.0 billion shares; Issued and outstanding — 353,230,000, 351,468,000 and 348,750,000 shares, respectively	35		35	35
Additional paid-in capital	494		437	330
Retained earnings	4,009		4,141	3,562
Accumulated other comprehensive income	330		382	494
Total Best Buy Co., Inc. shareholders’ equity	4,868		4,995	4,421
Noncontrolling interests	0		5	3
Total equity	4,868		5,000	4,424
Total liabilities and equity	$13,719		$15,256	$13,911
[1]	(1)Our 2016 Notes due March 15, 2016, are classified in the current portion of long-term debt as of May 2, 2015.

CONDENSED_CONSOLIDATED_BALANCE1

CONDENSED CONSOLIDATED BALANCE SHEETS (PARENTHETICAL) (USD $)	2-May-15	Jan. 31, 2015	3-May-14
Preferred stock, par value (in dollars per share)	$1	$1	$1
Preferred stock, authorized shares	400,000	400,000	400,000
Preferred stock, issued shares	0	0	0
Preferred stock, outstanding shares	0	0	0
Common stock, par value (in dollars per share)	$0.10	$0.10	$0.10
Common stock, authorized shares	1,000,000,000	1,000,000,000	1,000,000,000
Common stock, issued shares	353,230,000	351,468,000	348,750,000
Common stock, outstanding shares	353,230,000	351,468,000	348,750,000

CONSOLIDATED_STATEMENTS_OF_EAR

CONSOLIDATED STATEMENTS OF EARNINGS (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	2-May-15	3-May-14
Revenue	$8,558	$8,639
Cost of goods sold	6,520	6,672
Restructuring charges – cost of goods sold	8	0
Gross profit	2,030	1,967
Selling, general and administrative expenses	1,766	1,755
Restructuring charges	178	2
Operating income	86	210
Other income (expense)
Gain on sale of investments	2	0
Investment income and other	7	4
Interest expense	-20	-23
Earnings from continuing operations before income tax (benefit) expense	75	191
Income tax (benefit) expense	38	-278
Net earnings from continuing operations	37	469
Gain (loss) from discontinued operations (Note 2), net of tax benefit of $3 and $2	92	-8
Net earnings including noncontrolling interests	129	461
Net loss from discontinued operations attributable to noncontrolling interests	0	0
Net earnings attributable to Best Buy Co., Inc. shareholders	$129	$461
Basic earnings (loss) per share attributable to Best Buy Co., Inc. shareholders
Continuing operations (in dollars per share)	$0.11	$1.35
Discontinued operations (in dollars per share)	$0.26	($0.02)
Basic earnings per share (in dollars per share)	$0.37	$1.33
Diluted earnings (loss) per share attributable to Best Buy Co., Inc. shareholders
Continuing operations (in dollars per share)	$0.10	$1.33
Discontinued operations (in dollars per share)	$0.26	($0.02)
Diluted earnings per share (in dollars per share)	$0.36	$1.31
Dividends declared per common share (in dollars per share)	$0.74	$0.17
Weighted-average common shares outstanding (in millions)
Basic (in shares)	352.4	347.4
Diluted (in shares)	357.6	350.4

CONSOLIDATED_STATEMENTS_OF_EAR1

CONSOLIDATED STATEMENTS OF EARNINGS (PARENTHETICAL) (USD $)	3 Months Ended
In Millions, unless otherwise specified	2-May-15	3-May-14
Income tax benefit (expense)	$3	$2

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended
In Millions, unless otherwise specified	2-May-15	3-May-14
Net earnings including noncontrolling interests	$129	$461
Foreign currency translation adjustments	15	3
Unrealized loss on available-for-sale investments	0	-1
Reclassification of foreign currency translation adjustments into earnings due to sale of business	-67	0
Comprehensive income attributable to Best Buy Co., Inc. shareholders	$77	$463

CONSOLIDATED_STATEMENTS_OF_CHA

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (USD $)	Total	Total Best Buy Co., Inc. [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interests [Member]
In Millions, unless otherwise specified
Beginning balances at Feb. 01, 2014	$3,989	$3,986	$35	$300	$3,159	$492	$3
Beginning balances (in shares) at Feb. 01, 2014			347
Increase (Decrease) in Shareholders' Equity
Net earnings (loss), three months ended	461	461	0	0	461	0	0
Foreign currency translation adjustments	3	3	0	0	0	3	0
Unrealized gains (losses) on available-for-sale investments	-1	-1	0	0	0	-1	0
Reclassification of foreign currency translation adjustments into earnings due to sale of business	0
Stock-based compensation	23	23	0	23	0	0	0
Restricted stock vested and stock options exercised (in shares)			2
Restricted stock vested and stock options exercised	5	5	0	5	0	0	0
Issuance of common stock under employee stock purchase plan (in shares)			0
Issuance of common stock under employee stock purchase plan	4	4	0	4	0	0	0
Tax benefit (deficit) from stock options exercised, restricted stock vesting and employee stock purchase plan	-2	-2	0	-2	0	0	0
Common stock dividends	-58	-58	0	0	-58	0	0
Ending balances at May. 03, 2014	4,424	4,421	35	330	3,562	494	3
Ending balances (in shares) at May. 03, 2014			349
Beginning balances at Jan. 31, 2015	5,000	4,995	35	437	4,141	382	5
Beginning balances (in shares) at Jan. 31, 2015			352
Increase (Decrease) in Shareholders' Equity
Net earnings (loss), three months ended	129	129	0	0	129	0	0
Foreign currency translation adjustments	15	15	0	0	0	15	0
Unrealized gains (losses) on available-for-sale investments	0
Reclassification of foreign currency translation adjustments into earnings due to sale of business	-67	-67	0	0	0	-67	0
Sale of noncontrolling interest	5	0	0	0	0	0	-5
Stock-based compensation	27	27	0	27
Restricted stock vested and stock options exercised (in shares)			1
Restricted stock vested and stock options exercised	22	22	0	22	0	0	0
Issuance of common stock under employee stock purchase plan (in shares)			0
Issuance of common stock under employee stock purchase plan	3	3	0	3	0	0	0
Tax benefit (deficit) from stock options exercised, restricted stock vesting and employee stock purchase plan	5	5	0	5	0	0	0
Common stock dividends	-261	-261	0	0	-261	0	0
Ending balances at May. 02, 2015	$4,868	$4,868	$35	$494	$4,009	$330	$0
Ending balances (in shares) at May. 02, 2015			353

CONSOLIDATED_STATEMENTS_OF_CHA1

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (PARENTHETICAL) (USD $)	3 Months Ended
	2-May-15	3-May-14
Statement of Stockholders' Equity [Abstract]
Dividends declared per common share (in dollars per share)	$0.74	$0.17

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended
In Millions, unless otherwise specified	2-May-15	3-May-14
Operating activities
Net earnings including noncontrolling interests	$129	$461
Adjustments to reconcile net earnings to total cash provided by (used in) operating activities:
Depreciation	163	161
Restructuring charges	186	3
Gain on sale of business, net	-99	0
Stock-based compensation	27	23
Deferred income taxes	-25	-401
Other, net	3	3
Changes in operating assets and liabilities:
Receivables	302	436
Merchandise inventories	261	121
Other assets	4	7
Accounts payable	-446	-144
Other liabilities	-309	-312
Income taxes	-206	-50
Total cash provided by (used in) operating activities	-10	308
Investing activities
Additions to property and equipment	-124	-111
Purchases of investments	-547	-496
Sales of investments	440	224
Proceeds from sale of business, net of cash transferred upon sale	48	0
Change in restricted assets	-36	21
Settlement of net investment hedges	5	0
Total cash used in investing activities	-214	-362
Financing activities
Repayments of debt	-8	-6
Dividends paid	-261	-59
Issuance of common stock	25	9
Other, net	6	3
Total cash used in financing activities	-238	-53
Effect of exchange rate changes on cash	9	-2
Decrease in cash and cash equivalents	-453	-109
Cash and cash equivalents at beginning of period, excluding held for sale	2,432	2,678
Cash and cash equivalents held for sale at beginning of period	194
Cash and cash equivalents at end of period	$2,173	$2,569

Basis_of_Presentation_Notes

Basis of Presentation (Notes)	3 Months Ended
	2-May-15
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation
	Unless the context otherwise requires, the use of the terms “Best Buy,” “we,” “us,” and “our” in these Notes to Condensed Consolidated Financial Statements refers to Best Buy Co., Inc. and its consolidated subsidiaries.
	In the opinion of management, the accompanying condensed consolidated financial statements contain all adjustments necessary for a fair presentation as prescribed by accounting principles generally accepted in the United States (“GAAP”). All adjustments were comprised of normal recurring adjustments, except as noted in these Notes to Condensed Consolidated Financial Statements.
	Historically, we have generated a higher proportion of our revenue and earnings in the fiscal fourth quarter, which includes the majority of the holiday shopping season in the U.S., Canada and Mexico. Due to the seasonal nature of our business, interim results are not necessarily indicative of results for the entire fiscal year. The interim financial statements and the related notes in this Quarterly Report on Form 10-Q should be read in conjunction with the consolidated financial statements and related notes included in our Annual Report on Form 10-K for the fiscal year ended January 31, 2015. The first three months of fiscal 2016 and fiscal 2015 included 13 weeks.
	In order to align our fiscal reporting periods and comply with statutory filing requirements in certain foreign jurisdictions, we consolidate the financial results of our Mexico operations on a one-month lag. Our policy is to accelerate recording the effect of events occurring in the lag period that significantly affect our consolidated financial statements. No such events were identified for this period.
	In preparing the accompanying condensed consolidated financial statements, we evaluated the period from May 3, 2015, through the date the financial statements were issued, for material subsequent events requiring recognition or disclosure. No such events were identified for this period.

Discontinued_Operations

Discontinued Operations	3 Months Ended
	2-May-15
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	Discontinued Operations
	Discontinued operations are primarily comprised of Jiangsu Five Star Appliance Co., Limited ("Five Star") within our International segment. The presentation of discontinued operations has been retrospectively applied to all prior periods presented.
	During the fourth quarter of fiscal 2015, we entered into a definitive agreement to sell Five Star to Yingtan City Xiangyuan Investment Limited Partnership and Zhejiang Real Estate Group Co. On February 13, 2015, we completed the sale of Five Star and recognized a gain on sale of $99 million. Following the sale of Five Star, we continue to hold one retail property in Shanghai, China, which remains held for sale at May 2, 2015, as we continue to actively market the property.
	The composition of assets and liabilities disposed of as a result of the sale of Five Star was as follows ($ in millions):
		February 13, 2015
	Cash and cash equivalents	$	125
	Receivables	113
	Merchandise inventories	252
	All other assets	461
	Total assets	$	951
	Accounts payable	$	478
	All other liabilities	128
	Total liabilities	$	606
	The aggregate financial results of discontinued operations for the three months ended May 2, 2015 and May 3, 2014, respectively, were as follows ($ in millions):
		Three Months Ended
		May 2, 2015			May 3, 2014
	Revenue	$	212		$	396
	Restructuring charges(1)	—			1
	Loss from discontinued operations before income tax benefit	(10		)	(10		)
	Income tax benefit	3			2
	Gain on sale of discontinued operations	99			—
	Net gain (loss) from discontinued operations, including noncontrolling interests	92			(8		)
	Net loss from discontinued operations attributable to noncontrolling interests	—			—
	Net gain (loss) from discontinued operations attributable to Best Buy Co., Inc. shareholders	$	92		$	(8	)
	-1	See Note 5, Restructuring Charges, for further discussion of the restructuring charges associated with discontinued operations.

Fair_Value_Measurements_Notes

Fair Value Measurements (Notes)	3 Months Ended
	2-May-15
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements
	Fair value is the price that would be received to sell an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. To measure fair value, we use a three-tier valuation hierarchy based upon observable and non-observable inputs:
	Level 1 — Unadjusted quoted prices that are available in active markets for the identical assets or liabilities at the measurement date.
	Level 2 — Significant other observable inputs available at the measurement date, other than quoted prices included in Level 1, either directly or indirectly, including:
	•	Quoted prices for similar assets or liabilities in active markets;
	•	Quoted prices for identical or similar assets in non-active markets;
	•	Inputs other than quoted prices that are observable for the asset or liability; and
	•	Inputs that are derived principally from or corroborated by other observable market data.
	Level 3 — Significant unobservable inputs that cannot be corroborated by observable market data and reflect the use of significant management judgment. These values are generally determined using pricing models for which the assumptions utilize management’s estimates of market participant assumptions.
	Assets and Liabilities Measured at Fair Value on a Recurring Basis
	The fair value hierarchy requires the use of observable market data when available. In instances where the inputs used to measure fair value fall into different levels of the fair value hierarchy, the fair value measurement has been determined based on the lowest level input that is significant to the fair value measurement in its entirety. Our assessment of the significance of a particular item to the fair value measurement in its entirety requires judgment, including the consideration of inputs specific to the asset or liability.
	The following tables set forth by level within the fair value hierarchy, our financial assets and liabilities that were accounted for at fair value on a recurring basis at May 2, 2015, January 31, 2015, and May 3, 2014, according to the valuation techniques we used to determine their fair values ($ in millions).
				Fair Value Measurements
				Using Inputs Considered as
		Fair Value at		Quoted Prices		Significant		Significant
		2-May-15		in Active		Other		Unobservable
				Markets for		Observable		Inputs
				Identical Assets		Inputs		(Level 3)
				(Level 1)		(Level 2)
	ASSETS
	Cash and cash equivalents
	Money market funds	$	6	$	6	$	—	$	—
	Corporate bonds	22		—		22		—
	Commercial paper	231		—		231		—
	Short-term investments
	Corporate bonds	320		—		320		—
	Commercial paper	237		—		237		—
	International government bonds	21		—		21		—
	Other current assets
	Foreign currency derivative instruments	13		—		13		—
	Other assets
	Interest rate swap derivative instruments	7		—		7		—
	Auction rate securities	2		—		—		2
	Marketable securities that fund deferred compensation	98		98		—		—
	LIABILITIES
	Accrued liabilities
	Foreign currency derivative instruments	5		—		5		—
	Interest rate swap derivative instruments	2		—		2		—
				Fair Value Measurements
				Using Inputs Considered as
		Fair Value at		Quoted Prices		Significant		Significant
		31-Jan-15		in Active		Other		Unobservable
				Markets for		Observable		Inputs
				Identical Assets		Inputs		(Level 3)
				(Level 1)		(Level 2)
	ASSETS
	Cash and cash equivalents
	Money market funds	$	265	$	265	$	—	$	—
	Corporate bonds	13		—		13		—
	Commercial paper	165		—		165		—
	Short-term investments
	Corporate bonds	276		—		276		—
	Commercial paper	306		—		306		—
	Other current assets
	Foreign currency derivative instruments	30		—		30		—
	Other assets
	Interest rate swap derivative instruments	1		—		1		—
	Auction rate securities	2		—		—		2
	Marketable securities that fund deferred compensation	97		97		—		—
	ASSETS HELD FOR SALE
	Cash and cash equivalents
	Money market funds	16		16		—		—
				Fair Value Measurements
				Using Inputs Considered as
	Fair Value at		Quoted Prices		Significant		Significant
	3-May-14		in Active		Other		Unobservable
			Markets for		Observable		Inputs
			Identical Assets		Inputs		(Level 3)
			(Level 1)		(Level 2)
ASSETS
Cash and cash equivalents
Money market funds	$	16	$	16	$	—	$	—
Commercial paper	149		—		149		—
U.S. Treasury bills	100		100		—		—
Short-term investments
Commercial paper	234		—		234		—
U.S. Treasury bills	100		100		—		—
Other assets
Auction rate securities	9		—		—		9
Marketable equity securities	10		10		—		—
Marketable securities that fund deferred compensation	96		96		—		—
LIABILITIES
Accrued liabilities
Foreign currency derivative instruments	8		—		8		—
There was no change in the beginning and ending balances of items measured at fair value on a recurring basis in the tables above that used significant unobservable inputs (Level 3) for the three months ended May 2, 2015.
The following methods and assumptions were used to estimate the fair value of each class of financial instrument:
Money Market Funds. Our money market fund investments were measured at fair value as they trade in an active market using quoted market prices and therefore, were classified as Level 1.
Corporate Bonds. Our corporate bond investments were measured at fair value using quoted market prices. They were classified as Level 2 as they trade in a non-active market for which bond prices are readily available.
Commercial Paper. Our investments in commercial paper were measured using inputs based upon quoted prices for similar instruments in active markets and, therefore, were classified as Level 2.
Treasury Bills. Our U.S. Treasury bills were classified as Level 1 as they trade with sufficient frequency and volume to enable us to obtain pricing information on an ongoing basis.
International Government Bonds. Our international government bonds investments were measured at fair value using quoted market prices. They were classified as Level 2 as they trade in a non-active market for which bond prices are readily available.
Foreign Currency Derivative Instruments. Comprised primarily of foreign currency forward contracts and foreign currency swap contracts, our foreign currency derivative instruments were measured at fair value using readily observable market inputs, such as quotations on forward foreign exchange points and foreign interest rates. Our foreign currency derivative instruments were classified as Level 2 as these instruments are custom, over-the-counter contracts with various bank counterparties that are not traded in an active market.
Interest Rate Swap Derivative Instruments. Our interest rate swap contracts were measured at fair value using readily observable inputs, such as the LIBOR interest rate. Our interest rate swap derivative instruments were classified as Level 2 as these instruments are custom, over-the-counter contracts with various bank counterparties that are not traded in an active market.
Auction Rate Securities. Our investments in auction rate securities ("ARS") were classified as Level 3 as quoted prices were unavailable. Due to limited market information, we utilized a discounted cash flow ("DCF") model to derive an estimate of fair value. The assumptions we used in preparing the DCF model included estimates with respect to the amount and timing of future interest and principal payments, forward projections of the interest rate benchmarks, the probability of full repayment of the principal considering the credit quality and guarantees in place, and the rate of return required by investors to own such securities given the current liquidity risk associated with ARS.
Marketable Equity Securities. Our marketable equity securities were measured at fair value using quoted market prices. They were classified as Level 1 as they trade in an active market for which closing stock prices are readily available.
Marketable Securities that Fund Deferred Compensation. The assets that fund our deferred compensation consist of investments in mutual funds. These investments were classified as Level 1 as the shares of these mutual funds trade with sufficient frequency and volume to enable us to obtain pricing information on an ongoing basis.
Assets and Liabilities that are Measured at Fair Value on a Nonrecurring Basis
Assets and liabilities that are measured at fair value on a nonrecurring basis relate primarily to our tangible fixed assets, goodwill and other intangible assets, which are remeasured when the derived fair value is below carrying value on our Consolidated Balance Sheets. For these assets, we do not periodically adjust carrying value to fair value, except in the event of impairment. When we determine that impairment has occurred, the carrying value of the asset is reduced to fair value and the difference is recorded within operating income in our Consolidated Statements of Earnings.
The following table summarizes the fair value remeasurements for non-restructuring property and equipment impairments and restructuring impairments recorded during the three months ended May 2, 2015, and May 3, 2014 ($ in millions):
	Three Months Ended				Three Months Ended
	May 2, 2015				May 3, 2014
	Impairments		Remaining Net Carrying Value(1)		Impairments		Remaining Net Carrying Value(1)
Continuing operations
Property and equipment (non-restructuring)	$	11	$	9	$	9	$	—
Restructuring activities(2)
Tradename	40		—		—		—
Property and equipment	29		—		1		—
Total continuing operations	$	80	$	9	$	10	$	—
-1	Remaining net carrying value approximates fair value.
-2	See Note 5, Restructuring Charges, for additional information.
All of the fair value remeasurements included in the table above were based on significant unobservable inputs (Level 3). Fixed asset fair values were derived using a DCF model to estimate the present value of net cash flows that the asset or asset group was expected to generate. The key inputs to the DCF model generally included our forecasts of net cash generated from revenue, expenses and other significant cash outflows, such as capital expenditures, as well as an appropriate discount rate. For the tradename, fair value was derived using the relief from royalty method. In the case of assets for which the impairment was the result of restructuring activities, no future cash flows have been assumed as the assets will cease to be used and expected sale values are nominal.
Fair Value of Financial Instruments
Our financial instruments, other than those presented in the disclosures above, include cash, receivables, short-term investments, other investments, accounts payable, other payables, and long-term debt. The fair values of cash, receivables, short-term investments, accounts payable and other payables approximated carrying values because of the short-term nature of these instruments. Short-term investments other than those disclosed in the tables above represent time deposits. Fair values for other investments held at cost are not readily available, but we estimate that the carrying values for these investments approximate fair value. See Note 6, Debt, for information about the fair value of our long-term debt.

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets (Notes)	3 Months Ended
	2-May-15
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets
	The changes in the carrying values of goodwill and indefinite-lived tradenames by segment were as follows in the three months ended May 2, 2015, and May 3, 2014 ($ in millions):
		Goodwill		Indefinite-lived Tradenames
		Domestic		Domestic			International			Total
	Balances at January 31, 2015	$	425	$	18		$	39		$	57
	Changes in foreign currency exchange rates	—		—			1			1
	Canada brand restructuring(1)	—		—			(40		)	(40		)
	Balances at May 2, 2015	$	425	$	18		$	—		$	18
	-1	Represents the Future Shop tradename impaired as a result of the Canadian brand consolidation in the first quarter of fiscal 2016. See Note 5, Restructuring Charges, for further discussion of the Canadian brand consolidation.
		Goodwill		Indefinite-lived Tradenames
		Domestic		Domestic			International			Total
	Balances at February 1, 2014	$	425	$	19		$	82		$	101
	Changes in foreign currency exchange rates	—		—			(1		)	(1		)
	Balances at May 3, 2014	$	425	$	19		$	81		$	100
	The following table provides the gross carrying amount of goodwill and cumulative goodwill impairment ($ in millions):
		May 2, 2015					January 31, 2015						May 3, 2014
		Gross		Cumulative			Gross			Cumulative			Gross		Cumulative
		Carrying		Impairment(1)			Carrying			Impairment(1)			Carrying		Impairment
		Amount(1)					Amount(1)						Amount
	Goodwill	$	1,100	$	(675	)	$	1,100		$	(675	)	$	1,308	$	(883	)
	-1	Excludes the gross carrying amount and cumulative impairment related to Five Star, which was held for sale at January 31, 2015. The sale was completed on February 13, 2015.

Restructuring_Charges_Notes

Restructuring Charges (Notes)	3 Months Ended
	2-May-15
Restructuring and Related Activities [Abstract]
Restructuring Charges	Restructuring Charges
	Charges incurred in the three months ended May 2, 2015, and May 3, 2014, for our restructuring activities were as follows ($ in millions):
		Three Months Ended
		May 2, 2015			May 3, 2014
	Continuing operations
	Canadian brand consolidation	$	188		$	—
	Renew Blue	(2		)	6
	Other restructuring activities(1)	—			(4		)
	Total continuing operations	186			2
	Discontinued operations
	Renew Blue	—			1
	Total restructuring charges	$	186		$	3
	-1	Represents activity related to our remaining vacant space liability for U.S. large-format store closures in fiscal 2013. We may continue to incur immaterial adjustments to the liability for changes in sublease assumptions or potential lease buyouts. In addition, lease payments for vacated stores will continue until leases expire or are terminated. The remaining facility closure cost liability was $29 million at May 2, 2015.
	Canadian Brand Consolidation
	In the first quarter of fiscal 2016, we consolidated the Future Shop and Best Buy stores and websites in Canada under the Best Buy brand. This resulted in the permanent closure of 66 Future Shop stores and the conversion of the remaining 65 Future Shop stores to the Best Buy brand. In the first quarter of fiscal 2016, we incurred $188 million of restructuring charges related to implementing these changes, which primarily consisted of lease exit costs, a tradename impairment, property and equipment impairments, employee termination benefits and inventory write-downs. We expect to incur total pre-tax charges in the range of $200 million to $280 million related to this action, which includes restructuring charges and other non-restructuring asset impairments and costs. The total charges includes approximately $140 million to $180 million of cash charges. We expect to substantially complete this activity in fiscal 2016, with the exception of lease payments for vacated stores which will continue until the leases expire or we otherwise terminate the leases.
	The inventory write-downs related to our Canadian brand consolidation are presented in restructuring charges – cost of goods sold in our Consolidated Statements of Earnings, and the remainder of the restructuring charges are presented in restructuring charges in our Consolidated Statements of Earnings. The composition of total restructuring charges we incurred for the Canadian brand consolidation in the first quarter of fiscal 2016 was as follows ($ in millions):
		International
	Continuing operations
	Inventory write-downs	$	8
	Property and equipment impairments	29
	Tradename impairment	40
	Termination benefits	24
	Facility closure and other costs	87
	Total continuing operations	$	188
	The following tables summarize our restructuring accrual activity during the three months ended May 2, 2015, related to termination benefits and facility closure and other costs associated with Canadian brand consolidation ($ in millions):
		Termination			Facility			Total
		Benefits			Closure and
					Other Costs
	Balances at January 31, 2015	$	—		$	—		$	—
	Charges	24			98			122
	Cash payments	(17		)	(3		)	(20		)
	Changes in foreign currency exchange rates	1			3			4
	Balances at May 2, 2015	$	8		$	98		$	106
	Renew Blue
	In the fourth quarter of fiscal 2013, we began implementing initiatives intended to reduce costs and improve operating performance. These initiatives included focusing on core business activities, reducing headcount, updating our store operating model and optimizing our real estate portfolio. These cost reduction initiatives represented one of the key Renew Blue priorities. We recognized a benefit of $2 million and incurred $6 million of restructuring charges related to Renew Blue initiatives during the first three months of fiscal 2016 and 2015, respectively. The benefit in the first three months of fiscal 2016 was primarily due to an adjustment to our employee termination benefit liability due to higher-than-expected employee retention. The charges in the first three months of fiscal 2015 were primarily comprised of employee termination benefits. We expect to continue to implement cost reduction initiatives throughout the remainder of fiscal 2016, as we further analyze our operations and strategies.
	For continuing operations, the inventory write-downs related to our Renew Blue restructuring activities are presented in restructuring charges - cost of goods sold in our Consolidated Statements of Earnings and the remainder of the restructuring charges are presented in restructuring charges in our Consolidated Statements of Earnings. The restructuring charges from discontinued operations related to this plan are presented in loss from discontinued operations, net of tax.
	The composition of the restructuring charges we incurred for this program in the three months ended May 2, 2015, and May 3, 2014, as well as the cumulative amount incurred through May 2, 2015, was as follows ($ in millions):
		Domestic									International							Total
		Three Months Ended						Cumulative			Three Months Ended					Cumulative		Three Months Ended						Cumulative
		May 2, 2015			May 3, 2014			Amount			May 2, 2015		May 3, 2014			Amount		May 2, 2015			May 3, 2014			Amount
	Continuing operations
	Inventory write-downs	$	—		$	—		$	1		$	—	$	—		$	—	$	—		$	—		$	1
	Property and equipment impairments	—			—			14			—		1			25		—			1			39
	Termination benefits	(2		)	6			159			—		2			38		(2		)	8			197
	Investment impairments	—			—			43			—		—			—		—			—			43
	Facility closure and other costs	—			—			4			—		(3		)	51		—			(3		)	55
	Total continuing operations	(2		)	6			221			—		—			114		(2		)	6			335
	Discontinued operations
	Property and equipment impairments	—			—			—			—		—			1		—			—			1
	Termination benefits	—			—			—			—		—			16		—			—			16
	Facility closure and other costs	—			—			—			—		1			11		—			1			11
	Total Discontinued Operations	—			—			—			—		1			28		—			1			28
	Total	$	(2	)	$	6		$	221		$	—	$	1		$	142	$	(2	)	$	7		$	363
	The following tables summarize our restructuring accrual activity during the three months ended May 2, 2015, and May 3, 2014, related to termination benefits and facility closure and other costs associated with this program ($ in millions):
		Termination			Facility			Total
		Benefits			Closure and
					Other Costs
	Balances at January 31, 2015	$	16		$	23		$	39
	Charges	—			—			—
	Cash payments	(2		)	(4		)	(6		)
	Adjustments(1)	(8		)	(4		)	(12		)
	Changes in foreign currency exchange rates	—			1			1
	Balances at May 2, 2015	$	6		$	16		$	22
	-1	Adjustments to termination benefits were due to higher-than-expected employee retention. In addition, adjustments include the remaining liabilities written off as a result of the sale of Five Star, as described in Note 2, Discontinued Operations.
	Termination			Facility			Total
	Benefits			Closure and
				Other Costs
Balances at February 1, 2014	$	111		$	51		$	162
Charges	22			2			24
Cash payments	(26		)	(6		)	(32		)
Adjustments(1)	(14		)	(5		)	(19		)
Changes in foreign currency exchange rates	—			(5		)	(5		)
Balances at May 3, 2014	$	93		$	37		$	130
-1	Adjustments to termination benefits were due to higher-than-expected employee retention. Adjustments to facility closure and other costs represent changes in sublease assumptions.

Debt_Notes

Debt (Notes)	3 Months Ended
	2-May-15
Debt Disclosure [Abstract]
Debt	Debt
	Long-term debt consisted of the following ($ in millions):
		May 2, 2015			January 31, 2015			May 3, 2014
	2016 Notes	$	350		$	349		$	349
	2018 Notes	500			500			500
	2021 Notes	649			649			649
	Interest rate swap valuation adjustments	5			1			—
	Financing lease obligations	60			69			90
	Capital lease obligations	43			52			59
	Other debt	—			1			1
	Total long-term debt	1,607			1,621			1,648
	Less: current portion(1)	(383		)	(41		)	(44		)
	Total long-term debt, less current portion	$	1,224		$	1,580		$	1,604
	-1	Our 2016 Notes due March 15, 2016, are classified in the current portion of long-term debt as of May 2, 2015.
	The fair value of total long-term debt approximated $1,671 million, $1,677 million, and $1,705 million at May 2, 2015, January 31, 2015, and May 3, 2014, respectively, based primarily on the market prices quoted from external sources, compared with carrying values of $1,607 million, $1,621 million, and $1,648 million, respectively. If long-term debt was measured at fair value in the financial statements, it would be classified primarily as Level 2 in the fair value hierarchy.
	See Note 5, Debt, in the Notes to Consolidated Financial Statements included in our Annual Report on Form 10-K for the fiscal year ended January 31, 2015, for additional information regarding the terms of our debt facilities, debt instruments and other obligations.

Derivative_Instruments_Notes

Derivative Instruments (Notes)	3 Months Ended
	2-May-15
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	Derivative Instruments
	We manage our economic and transaction exposure to certain risks through the use of foreign currency derivative instruments. Our objective in holding these derivatives is to reduce the volatility of net earnings and cash flows, as well as net asset value associated with changes in foreign currency exchange rates. We do not hold derivative instruments for trading or speculative purposes. We have no derivatives that have credit risk-related contingent features, and we mitigate our credit risk by engaging with major financial institutions as our counterparties.
	We record all foreign currency derivative instruments on our Condensed Consolidated Balance Sheets at fair value and evaluate hedge effectiveness prospectively and retrospectively when electing to apply hedge accounting. We formally document all hedging relations at inception for derivative hedges and the underlying hedged items, as well as the risk management objectives and strategies for undertaking the hedge transaction. In addition, we have derivatives which are not designated as hedging instruments.
	Net Investment Hedges
	We use foreign exchange forward contracts to hedge against the effect of Canadian dollar exchange rate fluctuations on a portion of our net investment in our Canadian operations. The contracts have terms up to 12 months. For a net investment hedge, we recognize changes in the fair value of the derivative as a component of foreign currency translation within other comprehensive income to offset a portion of the change in translated value of the net investment being hedged, until the investment is sold or liquidated. We limit recognition in net earnings of amounts previously recorded in other comprehensive income to circumstances such as complete or substantially complete liquidation of the net investment in the hedged foreign operation. We report the ineffective portion of the gain or loss, if any, in net earnings.
	Interest Rate Swaps
	We use "receive fixed-rate, pay variable-rate" interest rate swaps to mitigate the effect of interest rate fluctuations on our 2018 Notes and 2021 Notes. Our interest rate swap contracts are considered perfect hedges because the critical terms and notional amounts match those of our fixed-rate debt being hedged and are therefore accounted as a fair value hedge using the shortcut method. Under the shortcut method, we recognize the change in the fair value of the derivatives with an offsetting change to the carrying value of the debt. Accordingly, there is no impact on our Consolidated Statements of Earnings from the fair value of the derivatives.
	Derivatives Not Designated as Hedging Instruments
	We use foreign currency forward contracts to manage the impact of fluctuations in foreign currency exchange rates relative to recognized receivable and payable balances denominated in non-functional currencies and on certain forecast inventory purchases denominated in non-functional currencies. The contracts generally have terms of up to 12 months. These derivative instruments are not designated in hedging relationships and, therefore, we record gains and losses on these contracts directly to net earnings.
	Summary of Derivative Balances
	The following table presents the gross fair values for outstanding derivative instruments and the corresponding classification at May 2, 2015, January 31, 2015 and May 3, 2014:
		May 2, 2015						January 31, 2015				May 3, 2014
	Contract Type	Assets			Liabilities			Assets		Liabilities		Assets		Liabilities
	Derivatives designated as net investment hedges(1)	$	8		$	2		$	19	$	—	$	—	$	—
	Derivatives designated as interest rate swaps(2)	7			2			1		—		—		—
	No hedge designation (foreign exchange forward contracts)(1)	5			3			11		—		—		8
	Total	$	20		$	7		$	31	$	—	$	—	$	8
	-1	The fair value is recorded in other current assets or accrued liabilities.
	-2	The fair value is recorded in other assets or long-term liabilities.
	The following table presents the effects of derivative instruments on Other Comprehensive Income ("OCI") and on our Consolidated Statements of Earnings for the first quarter of fiscal 2016 and 2015:
		Three Months Ended						Three Months Ended
		May 2, 2015						May 3, 2014
	Contract Type	Pre-tax Gain(Loss) Recognized in OCI			Gain(Loss) Reclassified from Accumulated OCI to Earnings (Effective Portion)			Pre-tax Gain(Loss) Recognized in OCI		Gain(Loss) Reclassified from Accumulated OCI to Earnings (Effective Portion)
	Derivatives designated as net investment hedges	$	(9	)	$	—		$	—	$	—
	The following tables present the effects of derivative instruments on our Consolidated Statements of Earnings for the first quarter of fiscal 2016 and 2015:
		Gain (Loss) Recognized within SG&A
		Three Months Ended			Three Months Ended
	Contract Type	2-May-15			3-May-14
	No hedge designation (foreign exchange forward contracts)	$	(5	)	$	(3	)
		Gain (Loss) Recognized within Interest Expense
		Three Months Ended			Three Months Ended
	Contract Type	2-May-15			3-May-14
	Interest rate swap gain	$	4		$	—
	Long-term debt loss	(4		)	—
	Net impact on Consolidated Statements of Earnings	$	—		$	—
	The following table presents the notional amounts of our derivative instruments at May 2, 2015, January 31, 2015 and May 3, 2014:
		Notional Amount
	Contract Type	2-May-15			31-Jan-15			3-May-14
	Derivatives designated as net investment hedges	$	222		$	197		$	—
	Derivatives designated as interest rate swaps	750			145			—
	No hedge designation (foreign exchange forward contracts)	199			212			131
	Total	$	1,171		$	554		$	131

Earnings_per_Share_Notes

Earnings per Share (Notes)	3 Months Ended
	2-May-15
Earnings Per Share [Abstract]
Earnings per Share	Earnings per Share
	We compute our basic earnings per share based on the weighted-average number of common shares outstanding and our diluted earnings per share based on the weighted-average number of common shares outstanding adjusted by the number of additional shares that would have been outstanding had potentially dilutive common shares been issued. Potentially dilutive securities include stock options, nonvested share awards and shares issuable under our employee stock purchase plan. Nonvested market-based share awards and nonvested performance-based share awards are included in the average diluted shares outstanding for each period if established market or performance criteria have been met at the end of the respective periods.
	The following table presents a reconciliation of the numerators and denominators of basic and diluted earnings per share from continuing operations attributable to Best Buy Co., Inc. ($ and shares in millions):
		Three Months Ended
		May 2, 2015		May 3, 2014
	Numerator
	Net earnings from continuing operations attributable to Best Buy Co., Inc.	$	37	$	469
	Denominator
	Weighted-average common shares outstanding	352.4		347.4
	Effect of potentially dilutive securities:
	Nonvested share awards	5.2		3
	Weighted-average common shares outstanding, assuming dilution	357.6		350.4
	Net earnings per share from continuing operations attributable to Best Buy Co., Inc.
	Basic	$	0.11	$	1.35
	Diluted	$	0.1	$	1.33
	The computation of weighted-average common shares outstanding, assuming dilution, excluded options to purchase 10.1 million and 16.2 million shares of our common stock for the three months ended May 2, 2015, and May 3, 2014, respectively. These amounts were excluded as the options’ exercise prices were greater than the average market price of our common stock for the periods presented and, therefore, the effect would be anti-dilutive (i.e., including such options would result in higher earnings per share).

Comprehensive_Income_Notes

Comprehensive Income (Notes)	3 Months Ended
	2-May-15
Equity [Abstract]
Comprehensive Income	Comprehensive Income
	The following tables provide a reconciliation of the components of accumulated other comprehensive income, net of tax, attributable to Best Buy Co., Inc. for the three months ended May 2, 2015, and the three months ended May 3, 2014, respectively ($ in millions).
		Foreign Currency Translation			Available-For-Sale Investments			Total
	Balances at January 31, 2015	$	382		$	—		$	382
	Foreign currency translation adjustments	15			—			15
	Reclassification of foreign currency translation adjustments into earnings due to sale of business	(67		)	—			(67		)
	Balances at May 2, 2015	$	330		$	—		$	330
		Foreign Currency Translation			Available-For-Sale Investments			Total
	Balances at February 1, 2014	$	485		$	7		$	492
	Foreign currency translation adjustments	3			—			3
	Unrealized losses on available-for-sale investments	—			(1		)	(1		)
	Balances at May 3, 2014	$	488		$	6		$	494
	The gains and losses on our net investment hedges, which are included in foreign currency translation, were not material for the periods presented. There is generally no tax impact related to foreign currency translation adjustments, as the earnings are considered permanently reinvested. In addition, there were no material tax impacts related to gains or losses on available-for-sale investments in the periods presented.

Income_Taxes_Notes

Income Taxes (Notes)	3 Months Ended
	2-May-15
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Income Tax Disclosure [Text Block]	Income Taxes
	In the first quarter of fiscal 2015, we filed an election with the Internal Revenue Service to treat a U.K. subsidiary as a disregarded entity such that its assets were deemed to be assets held directly by a U.S. entity for U.S. tax purposes. This tax-only election resulted in the elimination of our outside basis difference in the U.K. subsidiary. Additionally, the election resulted in the recognition of a deferred tax asset (and corresponding income tax benefit) for the remaining unrecognized inside tax basis in the U.K. subsidiary’s intangible asset. Excluding the $353 million income tax benefit related to this election, our effective tax rate in the first quarter of fiscal 2015 would have been 39.0%. See Note 10, Income Taxes, in the Notes to Consolidated Financial Statements included in our Annual Report on Form 10-K for the fiscal year ended January 31, 2015, for additional information.

Segments_Notes

Segments (Notes)	3 Months Ended
	2-May-15
Segment Reporting [Abstract]
Segments	Segments
	Our chief operating decision maker ("CODM") is our Chief Executive Officer. Our business is organized into two segments: Domestic (which is comprised of all operations within the U.S. and its territories) and International (which is comprised of all operations outside the U.S. and its territories). Our CODM has ultimate responsibility for enterprise decisions. Our CODM determines, in particular, resource allocation for, and monitors performance of, the consolidated enterprise, the Domestic segment and the International segment. The Domestic and International segment managers have responsibility for operating decisions, allocating resources and assessing performance within their respective segments. Our CODM relies on internal management reporting that analyzes enterprise results to the net earnings level and segment results to the operating income level.
	We aggregate our Canada and Mexico businesses into one International operating segment. Our Domestic and International operating segments also represent our reportable segments. The accounting policies of the segments are the same as those described in Note 1, Summary of Significant Accounting Policies, in the Notes to Consolidated Financial Statements included in our Annual Report on Form 10-K for the fiscal year ended January 31, 2015.
	Revenue by reportable segment was as follows ($ in millions):
		Three Months Ended
		May 2, 2015			May 3, 2014
	Domestic	$	7,890		$	7,781
	International	668			858
	Total revenue	$	8,558		$	8,639
	Operating income (loss) by reportable segment and the reconciliation to earnings from continuing operations before income tax (benefit) expense were as follows ($ in millions):
		Three Months Ended
		May 2, 2015			May 3, 2014
	Domestic	$	304		$	226
	International	(218		)	(16		)
	Total operating income	86			210
	Other income (expense)
	Gain on sale of investments	2			—
	Investment income and other	7			4
	Interest expense	(20		)	(23		)
	Earnings from continuing operations before income tax (benefit) expense	$	75		$	191
	Assets by reportable segment were as follows ($ in millions):
		May 2, 2015			January 31, 2015			May 3, 2014
	Domestic	$	12,395		$	12,998		$	11,514
	International	1,324			2,258			2,397
	Total assets	$	13,719		$	15,256		$	13,911

Contingencies_Notes

Contingencies (Notes)	3 Months Ended
	2-May-15
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies
	We are involved in a number of legal proceedings. Where appropriate, we have made accruals with respect to these matters, which are reflected in our consolidated financial statements. However, there are cases where liability is not probable or the amount cannot be reasonably estimated and therefore accruals have not been made. We provide disclosure of matters where we believe it is reasonably possible the impact may be material to our consolidated financial statements.
	Securities Actions
	In February 2011, a purported class action lawsuit captioned, IBEW Local 98 Pension Fund, individually and on behalf of all others similarly situated v. Best Buy Co., Inc., et al., was filed against us and certain of our executive officers in the U.S. District Court for the District of Minnesota. This federal court action alleges, among other things, that we and the officers named in the complaint violated Sections 10(b) and 20A of the Exchange Act and Rule 10b-5 under the Exchange Act in connection with press releases and other statements relating to our fiscal 2011 earnings guidance that had been made available to the public. Additionally, in March 2011, a similar purported class action was filed by a single shareholder, Rene LeBlanc, against us and certain of our executive officers in the same court. In July 2011, after consolidation of the IBEW Local 98 Pension Fund and Rene LeBlanc actions, a consolidated complaint captioned, IBEW Local 98 Pension Fund v. Best Buy Co., Inc., et al., was filed and served. We filed a motion to dismiss the consolidated complaint in September 2011, and in March 2012, subsequent to the end of fiscal 2012, the court issued a decision dismissing the action with prejudice. In April 2012, the plaintiffs filed a motion to alter or amend the court's decision on our motion to dismiss. In October 2012, the court granted plaintiff's motion to alter or amend the court's decision on our motion to dismiss in part by vacating such decision and giving plaintiff leave to file an amended complaint, which plaintiff did in October 2012. We filed a motion to dismiss the amended complaint in November 2012 and all responsive pleadings were filed in December 2012. A hearing was held on April 26, 2013. On August 5, 2013, the court issued an order granting our motion to dismiss in part and, contrary to its March 2012 order, denying the motion to dismiss in part, holding that certain of the statements alleged to have been made were not forward-looking statements and therefore were not subject to the “safe-harbor” provisions of the Private Securities Litigation Reform Act (PSLRA). Plaintiffs moved to certify the purported class. By Order filed August 6, 2014, the court certified a class of persons or entities who acquired Best Buy common stock between 10:00 a.m. EDT on September 14, 2010, and December 13, 2010, and who were damaged by the alleged violations of law. The 8th Circuit Court of Appeals granted our request for interlocutory appeal. Briefing is complete. Oral argument is expected to be scheduled later in 2015. The trial court has stayed proceedings while the appeal is pending. We continue to believe that these allegations are without merit and intend to vigorously defend our company in this matter.
	In June 2011, a purported shareholder derivative action captioned, Salvatore M. Talluto, Derivatively and on Behalf of Best Buy Co., Inc. v. Richard M. Schulze, et al., as Defendants and Best Buy Co., Inc. as Nominal Defendant, was filed against both present and former members of our Board of Directors serving during the relevant periods in fiscal 2011 and us as a nominal defendant in the U.S. District Court for the State of Minnesota. The lawsuit alleges that the director defendants breached their fiduciary duty, among other claims, including violation of Section 10(b) of the Exchange Act and Rule 10b-5 thereunder, in failing to correct public misrepresentations and material misstatements and/or omissions regarding our fiscal 2011 earnings projections and, for certain directors, selling stock while in possession of material adverse non-public information. Additionally, in July 2011, a similar purported class action was filed by a single shareholder, Daniel Himmel, against us and certain of our executive officers in the same court. In November 2011, the respective lawsuits of Salvatore M. Talluto and Daniel Himmel were consolidated into a new action captioned, In Re: Best Buy Co., Inc. Shareholder Derivative Litigation, and a stay ordered pending the close of discovery in the consolidated IBEW Local 98 Pension Fund v. Best Buy Co., Inc., et al. case.
	The plaintiffs in the above securities actions seek damages, including interest, equitable relief and reimbursement of the costs and expenses they incurred in the lawsuits. As stated above, we believe the allegations in the above securities actions are without merit, and we intend to defend these actions vigorously. Based on our assessment of the facts underlying the claims in the above securities actions, their respective procedural litigation history, and the degree to which we intend to defend our company in these matters, the amount or range of reasonably possible losses, if any, cannot be estimated.
	Cathode Ray Tube Action
	On November 14, 2011, we filed a lawsuit captioned In re Cathode Ray Tube Antitrust Litigation in the United States District Court for the Northern District of California. We allege that the defendants engaged in price fixing in violation of antitrust regulations relating to cathode ray tubes for the time period between March 1, 1995 through November 25, 2007. No trial date has been set. In connection with this action, we received settlement proceeds net of legal expenses and costs in the amount of $67 million in the first quarter of fiscal 2016. We will continue to litigate against the remaining defendants and expect further settlement discussions as this matter proceeds; however, it is uncertain whether we will recover additional settlement sums or a favorable verdict at trial.
	Other Legal Proceedings
	We are involved in various other legal proceedings arising in the normal course of conducting business. For such legal proceedings, we have accrued an amount that reflects the aggregate liability deemed probable and estimable, but this amount is not material to our consolidated financial position, results of operations or cash flows. Because of the preliminary nature of many of these proceedings, the difficulty in ascertaining the applicable facts relating to many of these proceedings, the variable treatment of claims made in many of these proceedings and the difficulty of predicting the settlement value of many of these proceedings, we are not able to estimate an amount or range of any reasonably possible additional losses. However, based upon our historical experience, the resolution of these proceedings is not expected to have a material effect on our consolidated financial position, results of operations or cash flows.

Discontinued_Operations_Discon

Discontinued Operations Discontinued Operations (Tables)	3 Months Ended
	2-May-15
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Schedule of Assets and Liabilities Disposed of by Sale, in Period of Disposition [Table Text Block]
		February 13, 2015
	Cash and cash equivalents	$	125
	Receivables	113
	Merchandise inventories	252
	All other assets	461
	Total assets	$	951
	Accounts payable	$	478
	All other liabilities	128
	Total liabilities	$	606
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures	The aggregate financial results of discontinued operations for the three months ended May 2, 2015 and May 3, 2014, respectively, were as follows ($ in millions):
		Three Months Ended
		May 2, 2015			May 3, 2014
	Revenue	$	212		$	396
	Restructuring charges(1)	—			1
	Loss from discontinued operations before income tax benefit	(10		)	(10		)
	Income tax benefit	3			2
	Gain on sale of discontinued operations	99			—
	Net gain (loss) from discontinued operations, including noncontrolling interests	92			(8		)
	Net loss from discontinued operations attributable to noncontrolling interests	—			—
	Net gain (loss) from discontinued operations attributable to Best Buy Co., Inc. shareholders	$	92		$	(8	)
	-1	See Note 5, Restructuring Charges, for further discussion of the restructuring charges associated with discontinued operations.

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	2-May-15
Fair Value Disclosures [Abstract]
Fair Value, Assets and Liabilities Measured on Recurring Basis	The following tables set forth by level within the fair value hierarchy, our financial assets and liabilities that were accounted for at fair value on a recurring basis at May 2, 2015, January 31, 2015, and May 3, 2014, according to the valuation techniques we used to determine their fair values ($ in millions).
				Fair Value Measurements
				Using Inputs Considered as
		Fair Value at		Quoted Prices		Significant		Significant
		2-May-15		in Active		Other		Unobservable
				Markets for		Observable		Inputs
				Identical Assets		Inputs		(Level 3)
				(Level 1)		(Level 2)
	ASSETS
	Cash and cash equivalents
	Money market funds	$	6	$	6	$	—	$	—
	Corporate bonds	22		—		22		—
	Commercial paper	231		—		231		—
	Short-term investments
	Corporate bonds	320		—		320		—
	Commercial paper	237		—		237		—
	International government bonds	21		—		21		—
	Other current assets
	Foreign currency derivative instruments	13		—		13		—
	Other assets
	Interest rate swap derivative instruments	7		—		7		—
	Auction rate securities	2		—		—		2
	Marketable securities that fund deferred compensation	98		98		—		—
	LIABILITIES
	Accrued liabilities
	Foreign currency derivative instruments	5		—		5		—
	Interest rate swap derivative instruments	2		—		2		—
				Fair Value Measurements
				Using Inputs Considered as
		Fair Value at		Quoted Prices		Significant		Significant
		31-Jan-15		in Active		Other		Unobservable
				Markets for		Observable		Inputs
				Identical Assets		Inputs		(Level 3)
				(Level 1)		(Level 2)
	ASSETS
	Cash and cash equivalents
	Money market funds	$	265	$	265	$	—	$	—
	Corporate bonds	13		—		13		—
	Commercial paper	165		—		165		—
	Short-term investments
	Corporate bonds	276		—		276		—
	Commercial paper	306		—		306		—
	Other current assets
	Foreign currency derivative instruments	30		—		30		—
	Other assets
	Interest rate swap derivative instruments	1		—		1		—
	Auction rate securities	2		—		—		2
	Marketable securities that fund deferred compensation	97		97		—		—
	ASSETS HELD FOR SALE
	Cash and cash equivalents
	Money market funds	16		16		—		—
				Fair Value Measurements
				Using Inputs Considered as
		Fair Value at		Quoted Prices		Significant		Significant
		3-May-14		in Active		Other		Unobservable
				Markets for		Observable		Inputs
				Identical Assets		Inputs		(Level 3)
				(Level 1)		(Level 2)
	ASSETS
	Cash and cash equivalents
	Money market funds	$	16	$	16	$	—	$	—
	Commercial paper	149		—		149		—
	U.S. Treasury bills	100		100		—		—
	Short-term investments
Commercial paper	234		—		234		—
U.S. Treasury bills	100		100		—		—
Other assets
Auction rate securities	9		—		—		9
Marketable equity securities	10		10		—		—
Marketable securities that fund deferred compensation	96		96		—		—
LIABILITIES
Accrued liabilities
Foreign currency derivative instruments	8		—		8		—
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis	The following table summarizes the fair value remeasurements for non-restructuring property and equipment impairments and restructuring impairments recorded during the three months ended May 2, 2015, and May 3, 2014 ($ in millions):
		Three Months Ended				Three Months Ended
		May 2, 2015				May 3, 2014
		Impairments		Remaining Net Carrying Value(1)		Impairments		Remaining Net Carrying Value(1)
	Continuing operations
	Property and equipment (non-restructuring)	$	11	$	9	$	9	$	—
	Restructuring activities(2)
	Tradename	40		—		—		—
	Property and equipment	29		—		1		—
	Total continuing operations	$	80	$	9	$	10	$	—
	-1	Remaining net carrying value approximates fair value.
	-2	See Note 5, Restructuring Charges, for additional information.

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets (Tables)	3 Months Ended
	2-May-15
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets and Goodwill, by Segment	The changes in the carrying values of goodwill and indefinite-lived tradenames by segment were as follows in the three months ended May 2, 2015, and May 3, 2014 ($ in millions):
		Goodwill		Indefinite-lived Tradenames
		Domestic		Domestic			International			Total
	Balances at January 31, 2015	$	425	$	18		$	39		$	57
	Changes in foreign currency exchange rates	—		—			1			1
	Canada brand restructuring(1)	—		—			(40		)	(40		)
	Balances at May 2, 2015	$	425	$	18		$	—		$	18
	-1	Represents the Future Shop tradename impaired as a result of the Canadian brand consolidation in the first quarter of fiscal 2016. See Note 5, Restructuring Charges, for further discussion of the Canadian brand consolidation.
		Goodwill		Indefinite-lived Tradenames
		Domestic		Domestic			International			Total
	Balances at February 1, 2014	$	425	$	19		$	82		$	101
	Changes in foreign currency exchange rates	—		—			(1		)	(1		)
	Balances at May 3, 2014	$	425	$	19		$	81		$	100
Schedule of Gross Amount of Goodwill and Accumulated Goodwill Impairment Losses	The following table provides the gross carrying amount of goodwill and cumulative goodwill impairment ($ in millions):
		May 2, 2015					January 31, 2015						May 3, 2014
		Gross		Cumulative			Gross			Cumulative			Gross		Cumulative
		Carrying		Impairment(1)			Carrying			Impairment(1)			Carrying		Impairment
		Amount(1)					Amount(1)						Amount
	Goodwill	$	1,100	$	(675	)	$	1,100		$	(675	)	$	1,308	$	(883	)
	-1	Excludes the gross carrying amount and cumulative impairment related to Five Star, which was held for sale at January 31, 2015. The sale was completed on February 13, 2015.

Restructuring_Charges_Tables

Restructuring Charges (Tables)	3 Months Ended
	2-May-15
Restructuring Cost and Reserve [Line Items]
Composition of Restructuring Charges	Charges incurred in the three months ended May 2, 2015, and May 3, 2014, for our restructuring activities were as follows ($ in millions):
		Three Months Ended
		May 2, 2015			May 3, 2014
	Continuing operations
	Canadian brand consolidation	$	188		$	—
	Renew Blue	(2		)	6
	Other restructuring activities(1)	—			(4		)
	Total continuing operations	186			2
	Discontinued operations
	Renew Blue	—			1
	Total restructuring charges	$	186		$	3
	-1	Represents activity related to our remaining vacant space liability for U.S. large-format store closures in fiscal 2013. We may continue to incur immaterial adjustments to the liability for changes in sublease assumptions or potential lease buyouts. In addition, lease payments for vacated stores will continue until leases expire or are terminated. The remaining facility closure cost liability was $29 million at May 2, 2015.
Restructuring Program Canadian Brand Consolidation [Member]
Restructuring Cost and Reserve [Line Items]
Composition of Restructuring Charges
		International
	Continuing operations
	Inventory write-downs	$	8
	Property and equipment impairments	29
	Tradename impairment	40
	Termination benefits	24
	Facility closure and other costs	87
	Total continuing operations	$	188
Restructuring Accrual Activity
		Termination			Facility			Total
		Benefits			Closure and
					Other Costs
	Balances at January 31, 2015	$	—		$	—		$	—
	Charges	24			98			122
	Cash payments	(17		)	(3		)	(20		)
	Changes in foreign currency exchange rates	1			3			4
	Balances at May 2, 2015	$	8		$	98		$	106
Restructuring Program 2013 Renew Blue [Member] [Domain]
Restructuring Cost and Reserve [Line Items]
Composition of Restructuring Charges	The composition of the restructuring charges we incurred for this program in the three months ended May 2, 2015, and May 3, 2014, as well as the cumulative amount incurred through May 2, 2015, was as follows ($ in millions):
		Domestic									International							Total
		Three Months Ended						Cumulative			Three Months Ended					Cumulative		Three Months Ended						Cumulative
		May 2, 2015			May 3, 2014			Amount			May 2, 2015		May 3, 2014			Amount		May 2, 2015			May 3, 2014			Amount
	Continuing operations
	Inventory write-downs	$	—		$	—		$	1		$	—	$	—		$	—	$	—		$	—		$	1
	Property and equipment impairments	—			—			14			—		1			25		—			1			39
	Termination benefits	(2		)	6			159			—		2			38		(2		)	8			197
	Investment impairments	—			—			43			—		—			—		—			—			43
	Facility closure and other costs	—			—			4			—		(3		)	51		—			(3		)	55
	Total continuing operations	(2		)	6			221			—		—			114		(2		)	6			335
	Discontinued operations
	Property and equipment impairments	—			—			—			—		—			1		—			—			1
	Termination benefits	—			—			—			—		—			16		—			—			16
	Facility closure and other costs	—			—			—			—		1			11		—			1			11
	Total Discontinued Operations	—			—			—			—		1			28		—			1			28
	Total	$	(2	)	$	6		$	221		$	—	$	1		$	142	$	(2	)	$	7		$	363
Restructuring Accrual Activity	The following tables summarize our restructuring accrual activity during the three months ended May 2, 2015, and May 3, 2014, related to termination benefits and facility closure and other costs associated with this program ($ in millions):
		Termination			Facility			Total
		Benefits			Closure and
					Other Costs
	Balances at January 31, 2015	$	16		$	23		$	39
	Charges	—			—			—
	Cash payments	(2		)	(4		)	(6		)
	Adjustments(1)	(8		)	(4		)	(12		)
	Changes in foreign currency exchange rates	—			1			1
	Balances at May 2, 2015	$	6		$	16		$	22
	-1	Adjustments to termination benefits were due to higher-than-expected employee retention. In addition, adjustments include the remaining liabilities written off as a result of the sale of Five Star, as described in Note 2, Discontinued Operations.
		Termination			Facility			Total
		Benefits			Closure and
					Other Costs
	Balances at February 1, 2014	$	111		$	51		$	162
	Charges	22			2			24
	Cash payments	(26		)	(6		)	(32		)
	Adjustments(1)	(14		)	(5		)	(19		)
	Changes in foreign currency exchange rates	—			(5		)	(5		)
	Balances at May 3, 2014	$	93		$	37		$	130
	-1	Adjustments to termination benefits were due to higher-than-expected employee retention. Adjustments to facility closure and other costs represent changes in sublease assumptions.

Debt_Tables

Debt (Tables)	3 Months Ended
	2-May-15
Debt Disclosure [Abstract]
Schedule of Long-term Debt	Long-term debt consisted of the following ($ in millions):
		May 2, 2015			January 31, 2015			May 3, 2014
	2016 Notes	$	350		$	349		$	349
	2018 Notes	500			500			500
	2021 Notes	649			649			649
	Interest rate swap valuation adjustments	5			1			—
	Financing lease obligations	60			69			90
	Capital lease obligations	43			52			59
	Other debt	—			1			1
	Total long-term debt	1,607			1,621			1,648
	Less: current portion(1)	(383		)	(41		)	(44		)
	Total long-term debt, less current portion	$	1,224		$	1,580		$	1,604
	-1	Our 2016 Notes due March 15, 2016, are classified in the current portion of long-term debt as of May 2, 2015.

Derivative_Instruments_Derivat

Derivative Instruments Derivative Instruments (Tables)	3 Months Ended
	2-May-15
Derivatives, Fair Value [Line Items]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
		May 2, 2015						January 31, 2015				May 3, 2014
	Contract Type	Assets			Liabilities			Assets		Liabilities		Assets		Liabilities
	Derivatives designated as net investment hedges(1)	$	8		$	2		$	19	$	—	$	—	$	—
	Derivatives designated as interest rate swaps(2)	7			2			1		—		—		—
	No hedge designation (foreign exchange forward contracts)(1)	5			3			11		—		—		8
	Total	$	20		$	7		$	31	$	—	$	—	$	8
	-1	The fair value is recorded in other current assets or accrued liabilities.
	-2	The fair value is recorded in other assets or long-term liabilities.
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]
		Three Months Ended						Three Months Ended
		May 2, 2015						May 3, 2014
	Contract Type	Pre-tax Gain(Loss) Recognized in OCI			Gain(Loss) Reclassified from Accumulated OCI to Earnings (Effective Portion)			Pre-tax Gain(Loss) Recognized in OCI		Gain(Loss) Reclassified from Accumulated OCI to Earnings (Effective Portion)
	Derivatives designated as net investment hedges	$	(9	)	$	—		$	—	$	—
Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]
		Gain (Loss) Recognized within SG&A
		Three Months Ended			Three Months Ended
	Contract Type	2-May-15			3-May-14
	No hedge designation (foreign exchange forward contracts)	$	(5	)	$	(3	)
Schedule of Interest Rate Derivatives [Table Text Block]
		Gain (Loss) Recognized within Interest Expense
		Three Months Ended			Three Months Ended
	Contract Type	2-May-15			3-May-14
	Interest rate swap gain	$	4		$	—
	Long-term debt loss	(4		)	—
	Net impact on Consolidated Statements of Earnings	$	—		$	—
Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]
		Notional Amount
	Contract Type	2-May-15			31-Jan-15			3-May-14
	Derivatives designated as net investment hedges	$	222		$	197		$	—
	Derivatives designated as interest rate swaps	750			145			—
	No hedge designation (foreign exchange forward contracts)	199			212			131
	Total	$	1,171		$	554		$	131

Earnings_per_Share_Tables

Earnings per Share (Tables)	3 Months Ended
	2-May-15
Earnings Per Share [Abstract]
Schedule of Calculation of Numerator and Denominator in Earnings Per Share	The following table presents a reconciliation of the numerators and denominators of basic and diluted earnings per share from continuing operations attributable to Best Buy Co., Inc. ($ and shares in millions):
		Three Months Ended
		May 2, 2015		May 3, 2014
	Numerator
	Net earnings from continuing operations attributable to Best Buy Co., Inc.	$	37	$	469
	Denominator
	Weighted-average common shares outstanding	352.4		347.4
	Effect of potentially dilutive securities:
	Nonvested share awards	5.2		3
	Weighted-average common shares outstanding, assuming dilution	357.6		350.4
	Net earnings per share from continuing operations attributable to Best Buy Co., Inc.
	Basic	$	0.11	$	1.35
	Diluted	$	0.1	$	1.33

Comprehensive_Income_Tables

Comprehensive Income (Tables)	3 Months Ended
	2-May-15
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The following tables provide a reconciliation of the components of accumulated other comprehensive income, net of tax, attributable to Best Buy Co., Inc. for the three months ended May 2, 2015, and the three months ended May 3, 2014, respectively ($ in millions).
		Foreign Currency Translation			Available-For-Sale Investments			Total
	Balances at January 31, 2015	$	382		$	—		$	382
	Foreign currency translation adjustments	15			—			15
	Reclassification of foreign currency translation adjustments into earnings due to sale of business	(67		)	—			(67		)
	Balances at May 2, 2015	$	330		$	—		$	330
		Foreign Currency Translation			Available-For-Sale Investments			Total
	Balances at February 1, 2014	$	485		$	7		$	492
	Foreign currency translation adjustments	3			—			3
	Unrealized losses on available-for-sale investments	—			(1		)	(1		)
	Balances at May 3, 2014	$	488		$	6		$	494

Segments_Tables

Segments (Tables)	3 Months Ended
	2-May-15
Segment Reporting [Abstract]
Business Segment Information	Revenue by reportable segment was as follows ($ in millions):
		Three Months Ended
		May 2, 2015			May 3, 2014
	Domestic	$	7,890		$	7,781
	International	668			858
	Total revenue	$	8,558		$	8,639
	Operating income (loss) by reportable segment and the reconciliation to earnings from continuing operations before income tax (benefit) expense were as follows ($ in millions):
		Three Months Ended
		May 2, 2015			May 3, 2014
	Domestic	$	304		$	226
	International	(218		)	(16		)
	Total operating income	86			210
	Other income (expense)
	Gain on sale of investments	2			—
	Investment income and other	7			4
	Interest expense	(20		)	(23		)
	Earnings from continuing operations before income tax (benefit) expense	$	75		$	191
	Assets by reportable segment were as follows ($ in millions):
		May 2, 2015			January 31, 2015			May 3, 2014
	Domestic	$	12,395		$	12,998		$	11,514
	International	1,324			2,258			2,397
	Total assets	$	13,719		$	15,256		$	13,911

Basis_of_Presentation_Details

Basis of Presentation (Details)	3 Months Ended
	2-May-15	3-May-14
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of weeks in fiscal period	P13W	P13W
Reporting period lag for consolidation of financial results	1 month

Discontinued_Operations_Discon1

Discontinued Operations Discontinued Operations (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	2-May-15		3-May-14		Feb. 13, 2015
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Revenue	$212		$396
Restructuring Charges Related to Discontinued Operations	0	[1]	1	[1]
Loss from discontinued operations before income tax benefit	-10		-10
Income tax benefit	3		2
Gain on sale of discontinued operations	99		0
Net gain (loss) from discontinued operations, including noncontrolling interests	92		-8
Net loss from discontinued operations attributable to noncontrolling interests	0		0
Net gain (loss) from discontinued operations attributable to Best Buy Co., Inc. shareholders	92		-8
Disposal Group, Including Discontinued Operation, Balance Sheet Disclosures [Abstract]
Cash and cash equivalents					125
Receivables					113
Merchandise inventories					252
All other assets					461
Total assets					951
Accounts payable					478
All other liabilities					128
Total liabilities					606
Five Star [Member]
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Gain on sale of discontinued operations	$99
[1]	See Note 5, Restructuring Charges, for further discussion of the restructuring charges associated with discontinued operations.

Fair_Value_Measurements_Recurr

Fair Value Measurements - Recurring (Details) (Fair Value, Measurements, Recurring [Member], USD $)	2-May-15	Jan. 31, 2015	3-May-14
In Millions, unless otherwise specified
Money Market Funds [Member]
Assets
Cash and Cash Equivalents, Held-for-sale		$16
Interest Rate Swap [Member]
Assets
Other Assets	7	1
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Money Market Funds [Member]
Assets
Cash and cash equivalents	6	265	16
Cash and Cash Equivalents, Held-for-sale		16
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | US Treasury Bill Securities [Member]
Assets
Cash and cash equivalents			100
Short-term investments			100
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Available-for-sale Securities [Member]
Assets
Other Assets			10
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Marketable securities that fund deferred compensation [Member]
Assets
Other Assets	98	97	96
Significant Other Observable Inputs (Level 2) [Member] | Money Market Funds [Member]
Assets
Short-term investments			234
Significant Other Observable Inputs (Level 2) [Member] | Corporate Bond Securities [Member]
Assets
Cash and cash equivalents	22	13
Short-term investments	320	276
Significant Other Observable Inputs (Level 2) [Member] | Commercial Paper [Member]
Assets
Cash and cash equivalents	231	165	149
Short-term investments	237	306
Significant Other Observable Inputs (Level 2) [Member] | International Government Bonds [Member]
Assets
Short-term investments	21
Significant Other Observable Inputs (Level 2) [Member] | Interest Rate Swap [Member]
Assets
Other Assets	7	1
Liabilities
Accrued Liabilities	2
Significant Other Observable Inputs (Level 2) [Member] | Foreign Exchange Contract [Member]
Assets
Other Current Assets	13	30
Liabilities
Accrued Liabilities	5		8
Significant Unobservable Inputs (Level 3) [Member] | Auction Rate Securities [Member]
Assets
Other Assets	2	2	9
Estimate of Fair Value Measurement [Member] | Money Market Funds [Member]
Assets
Cash and cash equivalents	6	265	16
Estimate of Fair Value Measurement [Member] | Corporate Bond Securities [Member]
Assets
Cash and cash equivalents	22	13
Short-term investments	320	276
Estimate of Fair Value Measurement [Member] | Commercial Paper [Member]
Assets
Cash and cash equivalents	231	165	149
Short-term investments	237	306	234
Estimate of Fair Value Measurement [Member] | International Government Bonds [Member]
Assets
Short-term investments	21
Estimate of Fair Value Measurement [Member] | US Treasury Bill Securities [Member]
Assets
Cash and cash equivalents			100
Short-term investments			100
Estimate of Fair Value Measurement [Member] | Interest Rate Swap [Member]
Liabilities
Accrued Liabilities	2
Estimate of Fair Value Measurement [Member] | Auction Rate Securities [Member]
Assets
Other Assets	2	2	9
Estimate of Fair Value Measurement [Member] | Available-for-sale Securities [Member]
Assets
Other Assets			10
Estimate of Fair Value Measurement [Member] | Marketable securities that fund deferred compensation [Member]
Assets
Other Assets	98	97	96
Estimate of Fair Value Measurement [Member] | Foreign Exchange Contract [Member]
Assets
Other Current Assets	13	30
Liabilities
Accrued Liabilities	$5		$8

Fair_Value_Measurements_Nonrec

Fair Value Measurements - Nonrecurring (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	2-May-15		3-May-14
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Tradename, impairments	$40	[1]
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	11		9
Property and equipment, remaining net carrying value	9	[2]	0	[2]
Total impairments	80		10
Total remaining net carrying value	9	[2]	0	[2]
Impairment of Intangible Assets Related to Restructuring [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]
Tradename, impairments	40	[3]
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	29	[3]	1	[3]
Property and equipment, remaining net carrying value	$0	[2],[3]	$0	[2],[3]
[1]	Represents the Future Shop tradename impaired as a result of the Canadian brand consolidation in the first quarter of fiscal 2016. See Note 5, Restructuring Charges, for further discussion of the Canadian brand consolidation.
[2]	Remaining net carrying value approximates fair value.
[3]	See Note 5, Restructuring Charges, for additional information.

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	2-May-15		3-May-14	Jan. 31, 2015
Goodwill [Roll Forward]
Goodwill, Balance at the beginning of the period	$425
Goodwill, Balance at the end of the period	425		425
Indefinite-lived Tradenames [Roll Forward]
Indefinite-lived Tradenames, Beginning balance	57		101
Indefinite-lived Intangible Assets, Translation Adjustments	1		-1
Indefinite-lived Tradenames, Impairments	-40	[1]
Indefinite-lived Tradenames, Ending balance	18		100
Gross amount of goodwill and the accumulated goodwill impairment losses
Gross Carrying Amount	1,100	[2]	1,308	1,100	[2]
Cumulative Impairment	-675	[2]	-883	-675	[2]
Domestic [Member]
Goodwill [Roll Forward]
Goodwill, Balance at the beginning of the period	425		425
Goodwill, Changes in foreign currency exchange rates	0
Goodwill, Impairments	0
Goodwill, Balance at the end of the period	425		425
Indefinite-lived Tradenames [Roll Forward]
Indefinite-lived Tradenames, Beginning balance	18		19
Indefinite-lived Intangible Assets, Translation Adjustments	0		0
Indefinite-lived Tradenames, Impairments	0
Indefinite-lived Tradenames, Ending balance	18		19
International [Member]
Indefinite-lived Tradenames [Roll Forward]
Indefinite-lived Tradenames, Beginning balance	39		82
Indefinite-lived Intangible Assets, Translation Adjustments	1		-1
Indefinite-lived Tradenames, Impairments	-40	[1]
Indefinite-lived Tradenames, Ending balance	$0		$81
[1]	Represents the Future Shop tradename impaired as a result of the Canadian brand consolidation in the first quarter of fiscal 2016. See Note 5, Restructuring Charges, for further discussion of the Canadian brand consolidation.
[2]	Excludes the gross carrying amount and cumulative impairment related to Five Star, which was held for sale at January 31, 2015. The sale was completed on February 13, 2015.

Restructuring_Charges_Summary_

Restructuring Charges Summary Table (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	2-May-15		3-May-14
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$186		$3
Restructuring Charges Related to Discontinued Operations	0	[1]	1	[1]
Continuing Operations [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	186		2
Continuing Operations [Member] | Restructuring Program Canadian Brand Consolidation [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	188
Continuing Operations [Member] | Restructuring Program 2013 Renew Blue [Member] [Domain]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	-2		6
Continuing Operations [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0		-4
Continuing Operations [Member] | International Segment [Member] | Restructuring Program Canadian Brand Consolidation [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	188
Discontinued Operations [Member] | Restructuring Program 2013 Renew Blue [Member] [Domain]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges Related to Discontinued Operations	$0		$1
[1]	See Note 5, Restructuring Charges, for further discussion of the restructuring charges associated with discontinued operations.

Restructuring_Charges_Canadian

Restructuring Charges - Canadian Brand Consolidation (Details) (Restructuring Program Canadian Brand Consolidation [Member], USD $)	3 Months Ended
In Millions, unless otherwise specified	2-May-15
Restructuring Cost and Reserve [Line Items]
Number of stores to be closed	66
Number of Future Shop stores converted to Best Buy stores	65
Restructuring Reserve [Roll Forward]
Restructuring reserve, balance at the beginning of the period	$0
Restructuring Charges, Rollforward	122
Cash payments	-20
Restructuring Reserve, Translation Adjustment	4
Restructuring reserve, balance at the end of the period	106
Termination benefits [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, balance at the beginning of the period	0
Restructuring Charges, Rollforward	24
Cash payments	-17
Restructuring Reserve, Translation Adjustment	1
Restructuring reserve, balance at the end of the period	8
Facility closure and other costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, balance at the beginning of the period	0
Restructuring Charges, Rollforward	98
Cash payments	-3
Restructuring Reserve, Translation Adjustment	3
Restructuring reserve, balance at the end of the period	98
Continuing Operations [Member] | International Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	188
Continuing Operations [Member] | International Segment [Member] | Inventory write-downs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	8
Continuing Operations [Member] | International Segment [Member] | Property and equipment impairments [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	29
Continuing Operations [Member] | International Segment [Member] | Impairment of Intangible Assets Related to Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	40
Continuing Operations [Member] | International Segment [Member] | Termination benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	24
Continuing Operations [Member] | International Segment [Member] | Facility closure and other costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	87
Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	200
Expected Payments for Restructuring	140
Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	280
Expected Payments for Restructuring	$180

Restructuring_Charges_Renew_Bl

Restructuring Charges - Renew Blue (Details) (Restructuring Program 2013 Renew Blue [Member] [Domain], USD $)	3 Months Ended
In Millions, unless otherwise specified	2-May-15		3-May-14
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	($2)		$7
Restructuring and Related Cost, Cost Incurred to Date	363
Restructuring Reserve [Roll Forward]
Restructuring reserve, balance at the beginning of the period	39		162
Restructuring Charges, Rollforward	0		24
Cash payments	-6		-32
Adjustments	-12	[1]	-19	[2]
Changes in foreign currency exchange rates	1		-5
Restructuring reserve, balance at the end of the period	22		130
Termination benefits [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, balance at the beginning of the period	16		111
Restructuring Charges, Rollforward	0		22
Cash payments	-2		-26
Adjustments	-8	[1]	-14	[2]
Changes in foreign currency exchange rates	0		0
Restructuring reserve, balance at the end of the period	6		93
Facility closure and other costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, balance at the beginning of the period	23		51
Restructuring Charges, Rollforward	0		2
Cash payments	-4		-6
Adjustments	-4	[1]	-5	[2]
Changes in foreign currency exchange rates	1		-5
Restructuring reserve, balance at the end of the period	16		37
Domestic [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	-2		6
Restructuring and Related Cost, Cost Incurred to Date	221
International [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		1
Restructuring and Related Cost, Cost Incurred to Date	142
Continuing Operations [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	-2		6
Restructuring and Related Cost, Cost Incurred to Date	335
Continuing Operations [Member] | Inventory write-downs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		0
Restructuring and Related Cost, Cost Incurred to Date	1
Continuing Operations [Member] | Property and equipment impairments [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		1
Restructuring and Related Cost, Cost Incurred to Date	39
Continuing Operations [Member] | Termination benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	-2		8
Restructuring and Related Cost, Cost Incurred to Date	197
Continuing Operations [Member] | Investment impairments [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		0
Restructuring and Related Cost, Cost Incurred to Date	43
Continuing Operations [Member] | Facility closure and other costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		-3
Restructuring and Related Cost, Cost Incurred to Date	55
Continuing Operations [Member] | Domestic [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	-2		6
Restructuring and Related Cost, Cost Incurred to Date	221
Continuing Operations [Member] | Domestic [Member] | Inventory write-downs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		0
Restructuring and Related Cost, Cost Incurred to Date	1
Continuing Operations [Member] | Domestic [Member] | Property and equipment impairments [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		0
Restructuring and Related Cost, Cost Incurred to Date	14
Continuing Operations [Member] | Domestic [Member] | Termination benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	-2		6
Restructuring and Related Cost, Cost Incurred to Date	159
Continuing Operations [Member] | Domestic [Member] | Investment impairments [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		0
Restructuring and Related Cost, Cost Incurred to Date	43
Continuing Operations [Member] | Domestic [Member] | Facility closure and other costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		0
Restructuring and Related Cost, Cost Incurred to Date	4
Continuing Operations [Member] | International [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		0
Restructuring and Related Cost, Cost Incurred to Date	114
Continuing Operations [Member] | International [Member] | Inventory write-downs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		0
Restructuring and Related Cost, Cost Incurred to Date	0
Continuing Operations [Member] | International [Member] | Property and equipment impairments [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		1
Restructuring and Related Cost, Cost Incurred to Date	25
Continuing Operations [Member] | International [Member] | Termination benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		2
Restructuring and Related Cost, Cost Incurred to Date	38
Continuing Operations [Member] | International [Member] | Investment impairments [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		0
Restructuring and Related Cost, Cost Incurred to Date	0
Continuing Operations [Member] | International [Member] | Facility closure and other costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		-3
Restructuring and Related Cost, Cost Incurred to Date	51
Discontinued Operations [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		1
Restructuring and Related Cost, Cost Incurred to Date	28
Discontinued Operations [Member] | Property and equipment impairments [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		0
Restructuring and Related Cost, Cost Incurred to Date	1
Discontinued Operations [Member] | Termination benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		0
Restructuring and Related Cost, Cost Incurred to Date	16
Discontinued Operations [Member] | Facility closure and other costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		1
Restructuring and Related Cost, Cost Incurred to Date	11
Discontinued Operations [Member] | Domestic [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		0
Restructuring and Related Cost, Cost Incurred to Date	0
Discontinued Operations [Member] | International [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		1
Restructuring and Related Cost, Cost Incurred to Date	28
Discontinued Operations [Member] | International [Member] | Property and equipment impairments [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		0
Restructuring and Related Cost, Cost Incurred to Date	1
Discontinued Operations [Member] | International [Member] | Termination benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		0
Restructuring and Related Cost, Cost Incurred to Date	16
Discontinued Operations [Member] | International [Member] | Facility closure and other costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		1
Restructuring and Related Cost, Cost Incurred to Date	$11
[1]	Adjustments to termination benefits were due to higher-than-expected employee retention. In addition, adjustments include the remaining liabilities written off as a result of the sale of Five Star, as described in Note 2, Discontinued Operations.
[2]	Adjustments to termination benefits were due to higher-than-expected employee retention. Adjustments to facility closure and other costs represent changes in sublease assumptions.

Restructuring_Charges_Restruct

Restructuring Charges Restructuring Other (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	2-May-15	3-May-14
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$186	$3
Facility closure and other costs [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	29
Continuing Operations [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	186	2
Continuing Operations [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$0	($4)

Long_Term_Debt_Details

Long Term Debt (Details) (USD $)	2-May-15		Jan. 31, 2015	3-May-14
In Millions, unless otherwise specified
Long-term Debt
Total long-term debt	$1,607		$1,621	$1,648
Less: current portion	-383	[1]	-41	-44
Total long-term debt, less current portion	1,224		1,580	1,604
Long-term Debt, Fair Value	1,671		1,677	1,705
2016 Notes [Member]
Long-term Debt
Total long-term debt	350		349	349
2018 Notes [Member]
Long-term Debt
Total long-term debt	500		500	500
2021 Notes [Member]
Long-term Debt
Total long-term debt	649		649	649
Interest Rate Swap [Member]
Long-term Debt
Total long-term debt	5		1
Financing Lease Obligations [Member]
Long-term Debt
Total long-term debt	60		69	90
Capital Lease Obligations [Member]
Long-term Debt
Total long-term debt	43		52	59
Other Debt [Member]
Long-term Debt
Total long-term debt	$0		$1	$1
[1]	(1)Our 2016 Notes due March 15, 2016, are classified in the current portion of long-term debt as of May 2, 2015.

Derivative_Instruments_Details

Derivative Instruments (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	2-May-15		3-May-14		Jan. 31, 2015
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	$20		$8		$31
Derivative Liability, Fair Value, Gross Liability	7
Notional Amount	1,171		131		554
Proceeds from divestiture of businesses	48		0
Net Investment Hedging [Member]
Derivatives, Fair Value [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax	-9
Derivative Asset, Fair Value, Gross Asset	8	[1]			19	[1]
Derivative Liability, Fair Value, Gross Liability	2	[1]
Contract term	12 months
Notional Amount	222		0		197
Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	7	[2]			1	[2]
Derivative Liability, Fair Value, Gross Liability	2	[2]
Notional Amount	750		0		145
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	5	[1]	8	[1]	11	[1]
Derivative Liability, Fair Value, Gross Liability	3	[1]
Contract term	12 months
Notional Amount	199		131		212
Gain (loss) on foreign currency derivative instruments not designated as hedging instruments	($5)		($3)
[1]	The fair value is recorded in other current assets or accrued liabilities.
[2]	The fair value is recorded in other assets or long-term liabilities.

Derivative_Instruments_Changes

Derivative Instruments Changes in Fair Value Hedges on Income (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	2-May-15
Derivative Instruments, Gain (Loss) [Line Items]
Net impact on Consolidated Statements of Earnings	$0
Interest Rate Swap [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate swap gain	4
Debt [Member] | Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Long-term debt loss	($4)

Earnings_per_Share_Details

Earnings per Share (Details) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	2-May-15	3-May-14
Numerator
Net earnings from continuing operations	$37	$469
Net earnings from continuing operations attributable to Best Buy Co., Inc.	$37	$469
Denominator
Weighted-average common shares outstanding (in shares)	352.4	347.4
Effect of potentially dilutive securities:
Nonvested share awards (in shares)	5.2	3
Weighted-average common shares outstanding, assuming dilution (in shares)	357.6	350.4
Net earnings per share from continuing operations attributable to Best Buy Co., Inc.
Basic (in dollars per share)	$0.11	$1.35
Diluted (in dollars per share)	$0.10	$1.33
Antidilutive securities excluded from computation of earnings per share	10.1	16.2

Comprehensive_Income_Details

Comprehensive Income (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	2-May-15	3-May-14
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Total, Beginning Balance	$382
Reclassification of foreign currency translation adjustments into earnings due to sale of business	-67	0
Unrealized gains (losses) on available-for-sale investments	0	-1
Total, Ending Balance	330	494
Best Buy Co., Inc. [Member]
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Foreign Currency Translation, Beginning Balance	382	485
Available-For-Sale Investments, Beginning Balance	0	7
Total, Beginning Balance	382	492
Foreign currency translation adjustments	15	3
Reclassification of foreign currency translation adjustments into earnings due to sale of business	-67
Unrealized gains (losses) on available-for-sale investments		-1
Foreign Currency Translation, Ending Balance	330	488
Available-For-Sale Investments, Ending Balance	0	6
Total, Ending Balance	$330	$494

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	2-May-15
Effective Income Tax Rate Reconciliation [Line Items]
Income Tax Expense (Benefit), Tax Election	($353)
Effective Income Tax Rate Reconciliation, Percent, without Tax Election	39.00%

Segments_Details

Segments (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	2-May-15	3-May-14	Jan. 31, 2015
	segments
Segment Reporting [Abstract]
Number of reportable segments	2
Business segment information
Total revenue	$8,558	$8,639
Operating income (loss)	86	210
Gain on sale of investments	2	0
Other income (expense)
Investment income and other	7	4
Interest expense	-20	-23
Earnings from continuing operations before income tax (benefit) expense	75	191
Total assets	13,719	13,911	15,256
Domestic [Member]
Business segment information
Total revenue	7,890	7,781
Operating income (loss)	304	226
Other income (expense)
Total assets	12,395	11,514	12,998
International [Member]
Business segment information
Total revenue	668	858
Operating income (loss)	-218	-16
Other income (expense)
Total assets	$1,324	$2,397	$2,258

Contingencies_Details

Contingencies (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	2-May-15
Commitments and Contingencies Disclosure [Abstract]
Proceeds from Legal Settlements	$67