2.2.0.25truefalse0208 - Disclosure - Investments in Marketable Securitiestruefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011
USD ($) / shares
USD ($)
$Jan-01-2011_Mar-31-2011http://www.sec.gov/CIK0000701345duration2011-01-01T00:00:002011-03-31T00:00:00USDEPSDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2false0us-gaap_MarketableSecuritiesTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00<!--DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" -->
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<div align="justify" style="font-size: 10pt; margin-top: 10pt"><b>7. Investments in Marketable Securities</b>
</div>
<div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent: 4%">As of March 31, 2011, the Company held auction rate securities with a fair value of $45
million ($69 million par value), which are classified as available-for-sale securities and
noncurrent assets on the Company’s condensed consolidated balance sheets. Contractual maturities
for these auction rate securities range from 22 to 25 years. As a result of the liquidity issues
experienced in the global credit and capital markets, all of the Company’s auction rate securities
have experienced failed auctions since August 2007. The estimated fair value of these auction rate
securities no longer approximates par value. Refer to Note 8 for discussion on how the Company
determines the fair value of its investments in auction rate securities.
</div>
<div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent: 4%">In the three months ended March 31, 2011, the Company sold certain investments in auction rate
securities for proceeds of $12 million. Proceeds from the auction rate security sale transactions
approximated the carrying amount of the investments.
</div>
<div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent: 4%">In the three months ended March 31, 2010, the Company sold certain investments in auction rate
securities for proceeds of $132 million, resulting in $49 million of net realized gains recorded in
nonoperating expense, net, of which $48 million represents the reclassification of prior period net
unrealized gains from other comprehensive income as determined on a specific-identification basis.
Additionally, in the first quarter of 2010, the Company recorded net unrealized losses of $1
million in other comprehensive income related to the decline in fair value of certain investments
in auction rate securities, which offset previously recognized unrealized gains.
</div>
<div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent: 4%">The Company continues to monitor the market for auction rate securities and consider its
impact (if any) on the fair value of its remaining investments in these securities. If the current
market conditions deteriorate, the Company may be required to record additional impairment charges
in other nonoperating expense, net in future periods.
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falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis item represents the entire disclosure related to Marketable Securities which may consist of all investments in certain debt and equity securities (and other assets).No authoritative reference available.falsefalse3false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://usairways.com/role/investmentsinmarketablesecurities1falsefalsefalse00falsefalsefalsefalsefalse2falsefalseUSDtruefalse{dei_LegalEntityAxis} : US Airways, Inc. [Member]
1/1/2011 - 3/31/2011
USD ($)
$ThreeMonthsEnded_31Mar2011_Subsidiaries_Memberhttp://www.sec.gov/CIK0000701345duration2011-01-01T00:00:002011-03-31T00:00:00falsefalseUS Airways, Inc. [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_SubsidiariesMemberdei_LegalEntityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalse4false0us-gaap_MarketableSecuritiesTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00<!--DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" -->
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<div style="font-family: 'Times New Roman',Times,serif; margin-left: 0in; ">
<div align="justify" style="font-size: 10pt; margin-top: 10pt"><b>7. Investments in Marketable Securities</b>
</div>
<div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent: 4%">As of March 31, 2011, US Airways held auction rate securities with a fair value of $45 million
($69 million par value), which are classified as available-for-sale securities and noncurrent
assets on US Airways’ condensed consolidated balance sheets. Contractual maturities for these
auction rate securities range from 22 to 25 years. As a result of the liquidity issues experienced
in the global credit and capital markets, all of US Airways’ auction rate securities have
experienced failed auctions since August 2007. The estimated fair value of these auction rate
securities no longer approximates par value. Refer to Note 8 for discussion on how US Airways
determines the fair value of its investments in auction rate securities.
</div>
<div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent: 4%">In the three months ended March 31, 2011, US Airways sold certain investments in auction rate
securities for proceeds of $12 million. Proceeds from the auction rate security sale transactions
approximated the carrying amount of the investments.
</div>
<div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent: 4%">In the three months ended March 31, 2010, US Airways sold certain investments in auction rate
securities for proceeds of $132 million, resulting in $49 million of net realized gains recorded in
nonoperating expense, net, of which $48 million represents the reclassification of prior period net
unrealized gains from other comprehensive income as determined on a specific-identification basis.
Additionally, in the first quarter of 2010, US Airways recorded net unrealized losses of $1 million
in other comprehensive income related to the decline in fair value of certain investments in
auction rate securities, which offset previously recognized unrealized gains.
</div>
<div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent: 4%">US Airways continues to monitor the market for auction rate securities and consider its impact
(if any) on the fair value of its remaining investments in these securities. If the current market
conditions deteriorate, US Airways may be required to record additional impairment charges in other
nonoperating expense, net in future periods.
</div>
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falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis item represents the entire disclosure related to Marketable Securities which may consist of all investments in certain debt and equity securities (and other assets).No authoritative reference available.falsefalse13Investments in Marketable SecuritiesUnKnownUnKnownUnKnownUnKnownfalsetrue