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Shareholders' Equity - Company's Repurchasing Activity by Repurchase Plan (Detail) (USD $) | 240 Months Ended | 156 Months Ended
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Dec. 31, 2013 Non-Discretionary Plan | Dec. 31, 2013 Discretionary Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Cumulative shares repurchased | 25,908,150 | 32,556,930
Average price per share | $ 24.46 | $ 36.76

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- Definition The weighted-average price at which shares were repurchased under a repurchase plan during the period. + References No definition available. + Details
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Namespace Prefix: | expd_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration