Auction Rate Securities, Interval Period

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Auction Rate Securities, Maturity Date Range, End

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Auction Rate Securities, Maturity Date Range, Start

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Auction Rate Securities, Par Value

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- Definition

Represents the number of companies from which an entity has been demerged.

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The high end of the range for the percentage of the entity's loans which are guaranteed.

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The low end of the range for the percentage of the entity's loans which are guaranteed.

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The percentage of the securities that are insured by rated bond insurers.

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The number of investments in the entity's portfolio as of the balance sheet date.

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The percentage of outstanding shares of a third party that were acquired by the entity.

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Percentage ownership in one of the entity's subsidiaries transferred by old CPW to Carphone Warehouse upon demerger into Carphone Warehouse and TalkTalk Telecom Group.

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The percentage of the entity's portfolio that is rated A/A by external credit reporting agencies Fitch and Moody's, respectively.

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The percentage of the entity's portfolio that is rated AA/Aa by external credit reporting agencies Fitch and Moody's, respectively.

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The percentage of the entity's portfolio that is rated AAA/Aaa by external credit reporting agencies Fitch and Moody's, respectively.

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Amount of securities sold, at par, during the period.

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The weighted average interest rate of securities.

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No definition available.

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- Definition

Accumulated appreciation or loss, net of tax, in value of the total of available-for-sale securities at the end of an accounting period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section 45

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- Definition

The difference between the carrying value and the sale price of equity securities, not separately or otherwise categorized as trading or available-for-sale. This element includes investments in which the entity holds a small ownership stake (generally, less than 20% of the shares outstanding) and cannot exert significant influence.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents investment securities as of the balance sheet date which may include marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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-Name Accounting Standards Codification

-Glossary Available-for-Sale Securities

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-Glossary Trading Securities

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The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

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- Definition

Gross appreciation or the gross loss in value of the total of unsold available-for-sale securities during the period being reported (except when designated as a fair value hedge).

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The cash inflow associated with the sale of equity securities classified as available-for-sale securities.

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-Name Accounting Standards Codification

-Glossary Investing Activities

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Investments which are intended to be sold in the short term (usually less than one year or the normal operating cycle, whichever is longer) including trading securities, available-for-sale securities, held-to-maturity securities, and other short-term investments not otherwise listed in the existing taxonomy.

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Investments (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended								12 Months Ended						3 Months Ended			3 Months Ended			3 Months Ended							12 Months Ended
	Mar. 03, 2012 investments	Feb. 26, 2011	Feb. 27, 2010	Mar. 31, 2010 company	Mar. 03, 2012 Money Market Funds [Member]	Feb. 26, 2011 Money Market Funds [Member]	Mar. 03, 2012 U.S. Treasury bills [Member]	Feb. 26, 2011 U.S. Treasury bills [Member]	Mar. 03, 2012 Debt Securities (Auction-Rate Securities) [Member]	Feb. 26, 2011 Debt Securities (Auction-Rate Securities) [Member]	Mar. 03, 2012 Student loan bonds [Member]	Feb. 26, 2011 Student loan bonds [Member]	Mar. 03, 2012 Municipal revenue bonds [Member]	Feb. 26, 2011 Municipal revenue bonds [Member]	Nov. 26, 2011 Marketable Equity Securities [Member]	Mar. 03, 2012 Marketable Equity Securities [Member]	Feb. 26, 2011 Marketable Equity Securities [Member]	Nov. 26, 2011 Common stock of Talk Talk Telecom Group PLC [Member]	Mar. 03, 2012 Common stock of Talk Talk Telecom Group PLC [Member]	Feb. 26, 2011 Common stock of Talk Talk Telecom Group PLC [Member]	Nov. 26, 2011 Common stock of Carphone Warehouse Group plc [Member]	Mar. 03, 2012 Common stock of Carphone Warehouse Group plc [Member]	Feb. 26, 2011 Common stock of Carphone Warehouse Group plc [Member]	Mar. 03, 2012 Marketable Equity Securities, Other [Member]	Feb. 26, 2011 Marketable Equity Securities, Other [Member]	Mar. 03, 2012 Other Investments [Member]	Feb. 26, 2011 Other Investments [Member]	Mar. 03, 2012 Auction Rate Securities, Interval 1 [Member]	Mar. 03, 2012 Auction Rate Securities, Interval 2 [Member]	Mar. 03, 2012 Auction Rate Securities, Interval 3 [Member]
Schedule of Investments
Total short-term investments	$ 0	$ 22			$ 0	$ 2	$ 0	$ 20
Total equity and other investments	140	328							82	110						3	146		0	62		0	84	3	0	55	72
Securities redeemed	27
Investments in portfolio (investments)	17
Investments, Fair Value Disclosure	82	110							82		80	108	2	2
Auction Rate Securities, Par Value									88	115
Guaranteed or Insured Percentage, Low Range (as a percent)	95.00%										95.00%
Guaranteed or Insured Percentage, High Range (as a percent)	100.00%										100.00%
Percentage Insured by Rated Bond Insurers (as a percent)													100.00%
Weighted Average Interest Rate Percentage (as a percent)									0.50%	0.80%
Percentage of Portfolio With Credit Rating AAA/Aaa (as a percent)									88.00%
Percentage of Portfolio With Credit Rating AA/Aa (as a percent)									3.00%
Percentage of Portfolio With Credit Rating A/A (as a percent)									9.00%
Interval of auction rate securities																												7 days	28 days	35 days
Auction Rate Securities, Maturity Date Range, Start (in years)									4 years
Auction Rate Securities, Maturity Date Range, End (in years)									30 years
Pre-tax unrealized gain (loss) in accumulated other comprehensive income									6
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	(3)	72							(3)	(3)						0	75
Marketable Equity Security, Ownership Percentage as of Purchase Date (as a percent)	3.00%
Number of companies formed after CPW demerger				2
Percentage ownership of former CPW in Best Buy Europe, included in Carphone Warehouse holding company (as a percent)	50.00%
Proceeds from Sale of Available-for-sale Securities, Equity															112			51			61
Gain on sale of investments	$ 55	$ 0	$ 0												$ 55