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USD ($) / shares
USD ($)
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USD ($)
USD ($) / shares
$D2010Q3http://www.sec.gov/CIK0000027419duration2010-08-01T00:00:002010-10-30T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDPerShareDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$3falsefalseUSDfalsefalse5/2/2010 - 7/31/2010
USD ($)
USD ($) / shares
$D2010Q2http://www.sec.gov/CIK0000027419duration2010-05-02T00:00:002010-07-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDPerShareDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$4falsefalseUSDfalsefalse1/31/2010 - 5/1/2010
USD ($) / shares
USD ($)
$D2010Q1http://www.sec.gov/CIK0000027419duration2010-01-31T00:00:002010-05-01T00:00:00USDPerShareDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$5falsefalseUSDfalsefalse11/1/2009 - 1/30/2010
USD ($) / shares
USD ($)
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USD ($) / shares
USD ($)
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USD ($)
USD ($) / shares
$D2009Q2http://www.sec.gov/CIK0000027419duration2009-05-03T00:00:002009-08-01T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDPerShareDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$8falsefalseUSDfalsefalse2/1/2009 - 5/2/2009
USD ($)
USD ($) / shares
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USD ($)
USD ($) / shares
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USD ($)
USD ($) / shares
$D2009http://www.sec.gov/CIK0000027419duration2009-02-01T00:00:002010-01-30T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDPerShareDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$11falsefalseUSDfalsefalse2/3/2008 - 1/31/2009
USD ($)
USD ($) / shares
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-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
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-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 5
-Subparagraph b
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-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 29
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-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
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-Name Accounting Research Bulletin (ARB)
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falsefalse4false0us-gaap_WeightedAverageNumberOfSharesOutstandingBasicus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse723600000723.6falsefalsefalsefalsefalse10truefalsefalse752000000752.0falsefalsefalsefalsefalse11truefalsefalse770400000770.4falsefalsefalsefalsefalseSharesxbrli:sharesItemTypesharesNumber of [basic] shares, after adjustment for contingently issuable shares and other shares not deemed outstanding, determined by relating the portion of time within a reporting period that common shares have been outstanding to the total time in that period.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
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falsefalse5false0us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse58000005.8falsefalsefalsefalsefalse10truefalsefalse28000002.8falsefalsefalsefalsefalse11truefalsefalse32000003.2falsefalsefalsefalsefalseSharesxbrli:sharesItemTypesharesAggregate awards of share options and nonvested shares to be issued to an employee under a share-based compensation arrangement are considered options for purposes of computing diluted earnings per share. Such share-based awards shall be considered to be outstanding as of the grant date for purposes of computing diluted earnings per share even though their exercise may be contingent upon vesting. Those share-based awards are included in the diluted Earnings Per Share (EPS) computation even if the employee may not receive (or be able to sell) the stock until some future date. Accordingly, all shares to be issued shall be included in computing diluted EPS if the effect is dilutive. The dilutive effect of share-based compensation arrangements shall be computed using the treasury stock method. If the equity share options or other equity instruments are outstanding for only part of a period, the shares issuable shall be weighted to reflect the portion of the period during which the equity instruments were outstanding.Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
-Number 128
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-Name Statement of Financial Accounting Standard (FAS)
-Number 128
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-Name Statement of Financial Accounting Standard (FAS)
-Number 128
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
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-Article 5
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 20
-Article 5
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 18
-Article 7
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
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-Article 9
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-Name Statement of Financial Accounting Standard (FAS)
-Number 128
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-Name Statement of Financial Accounting Standard (FAS)
-Number 128
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
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