Condensed Consolidating Financial Information (Details 4) (USD $) In Millions	3 Months Ended
May 28, 2011	May 29, 2010
Total cash provided by operating activities	$ 1,324	$ 169
Investing activities
Additions to property and equipment	(202)	(161)
Purchases of investments	(24)	(150)
Sales of investments	37	35
Change in restricted assets	3	11
Settlement of net investment hedges		12
Other, net		(1)
Total cash used in investing activities	(186)	(254)
Financing activities
Repurchase of common stock	(480)	(111)
Borrowings of debt	1,375	463
Repayments of debt	(913)	(907)
Dividends paid	(59)	(59)
Issuance of common stock under employee stock purchase plan and for the exercise of stock options	46	110
Excess tax benefits from stock-based compensation	1	10
Other, net	(7)
Total cash used in financing activities	(37)	(494)
Effect of exchange rate changes on cash	4	(8)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	1,105	(587)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	1,103	1,826
CASH AND CASH EQUIVALENTS AT END OF PERIOD	2,208	1,239
Best Buy Co., Inc.
Total cash provided by operating activities	597	409
Investing activities
Additions to property and equipment	(1)
Purchases of investments	(4)	(150)
Sales of investments	34	35
Total cash used in investing activities	29	(115)
Financing activities
Repurchase of common stock	(480)	(111)
Borrowings of debt	997
Repayments of debt		(1)
Dividends paid	(59)	(59)
Issuance of common stock under employee stock purchase plan and for the exercise of stock options	46	110
Excess tax benefits from stock-based compensation	1	10
Other, net	(7)
Change in intercompany receivable/payable	(123)	(843)
Total cash used in financing activities	375	(894)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	1,001	(600)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	282	1,170
CASH AND CASH EQUIVALENTS AT END OF PERIOD	1,283	570
Guarantor Subsidiary
Total cash provided by operating activities	(317)	(862)
Investing activities
Additions to property and equipment	(100)	(51)
Total cash used in investing activities	(100)	(51)
Financing activities
Repayments of debt	(3)	(3)
Change in intercompany receivable/payable	412	900
Total cash used in financing activities	409	897
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(8)	(16)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	51	53
CASH AND CASH EQUIVALENTS AT END OF PERIOD	43	37
Non-Guarantor Subsidiaries
Total cash provided by operating activities	1,044	622
Investing activities
Additions to property and equipment	(101)	(110)
Purchases of investments	(20)
Sales of investments	3
Change in restricted assets	3	11
Settlement of net investment hedges		12
Other, net		(1)
Total cash used in investing activities	(115)	(88)
Financing activities
Borrowings of debt	378	463
Repayments of debt	(910)	(903)
Change in intercompany receivable/payable	(289)	(57)
Total cash used in financing activities	(821)	(497)
Effect of exchange rate changes on cash	4	(8)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	112	29
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	770	603
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 882	$ 632

The change in receivables and payables that are due from or to subsidiary companies. These amounts are eliminated when preparing consolidated financial statements.

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Proceeds from Issuance of Debt.

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Repayments of Debt.

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents.

+ References

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-Publisher SEC
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The net change between the beginning and ending balance of cash and cash equivalents.

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The effect of exchange rate changes on cash balances held in foreign currencies.

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Reductions in the entity's income taxes that arise when compensation cost (from non-qualified share-based compensation) recognized on the entity's tax return exceeds compensation cost from share-based compensation recognized in financial statements. This element represents the cash inflow reported in the enterprise's financing activities.

+ References

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The net cash inflow (outflow) for the net change associated with funds that are not available for withdrawal or use (such as funds held in escrow) and are associated with underlying transactions that are classified as investing activities.

+ References

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The net cash inflow (outflow) from financing activity for the period.

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-Name Statement of Financial Accounting Standard (FAS)
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- Definition

The net cash inflow (outflow) from investing activity.

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-Name Statement of Financial Accounting Standard (FAS)
-Number 95
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The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities.

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- Definition

The cash outflow (inflow) for a financial contract that meets the hedge criteria as either a cash flow hedge, fair value hedge, or hedge of a net investment in a foreign operation.

+ References

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 14
-Subparagraph FN4

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- Definition

The net cash outflow (inflow) from other investing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.

+ References

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-Paragraph 15

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- Definition

The cash outflow to reacquire common stock during the period.

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-Paragraph 20
-Subparagraph a

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- Definition

The cash outflow from the entity's earnings to the shareholders.

+ References

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- Definition

The cash outflow associated with the purchase of all investments (debt, security, other) during the period.

+ References

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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- Definition

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

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- Definition

The net cash inflow (outflow) from other financing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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- Definition

The cash inflow associated with the sale, maturity and collection of all investments such as debt, security and so forth during the period.

+ References

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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- Definition

The cash inflow associated with the amount received from the stock plan during the period.

+ References

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