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Goodwill and Intangible Assets Net - Additional Information (Detail) (USD $)
 0 Months Ended 12 Months Ended
Oct. 01, 2014
Oct. 01, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Goodwill And Intangible Assets [Line Items]          
Goodwill impairments $ 0us-gaap_GoodwillImpairmentLoss $ 0us-gaap_GoodwillImpairmentLoss      
Amortization expense     79,615,000us-gaap_AmortizationOfIntangibleAssets 71,731,000us-gaap_AmortizationOfIntangibleAssets 31,705,000us-gaap_AmortizationOfIntangibleAssets
Trade Names          
Goodwill And Intangible Assets [Line Items]          
Impairment of indefinite lived intangible asset     3,000,000us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
/ us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember		 3,000,000us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
/ us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember		  
Leisure          
Goodwill And Intangible Assets [Line Items]          
Accumulated goodwill impairment losses     $ 2,500,000,000us-gaap_GoodwillImpairedAccumulatedImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= expe_LeisureMember		 $ 2,500,000,000us-gaap_GoodwillImpairedAccumulatedImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= expe_LeisureMember