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Consolidated Statements of Shareholders' Equity Shareholders' Equity (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Statement of Stockholders' Equity Parenthetical [Abstract] |  |  |
Common Stock, Dividends, Per Share, Cash Paid | $ 1.00 us-gaap_CommonStockDividendsPerShareCashPaid | $ 0.87 us-gaap_CommonStockDividendsPerShareCashPaid | $ 0.72 us-gaap_CommonStockDividendsPerShareCashPaid
Dividends, Share-based Compensation, Per Share, Cash Paid | $ 1.00 chdn_DividendsShareBasedCompensationPerShareCashPaid | $ 0.87 chdn_DividendsShareBasedCompensationPerShareCashPaid | $ 0.72 chdn_DividendsShareBasedCompensationPerShareCashPaid
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax | $ 70 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax |  |

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- Definition Dividends, Share-based Compensation, Per Share, Cash Paid + References No definition available. + Details
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- Definition Aggregate dividends paid during the period for each share of common stock outstanding. + 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 S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition Amount of tax expense (benefit), after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e640-108580 + Details
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