XML 18 R48.htm IDEA: XBRL DOCUMENT v2.4.1.9
Earnings Per Share - Additional Information (Detail) (Stock option and appreciation right plans)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 28, 2012
Stock option and appreciation right plans
     
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Securities not included in the calculation of diluted earnings per share (in shares) 0us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= mar_StockOptionProgramAndStockAppreciationRightProgramMember
400,000us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= mar_StockOptionProgramAndStockAppreciationRightProgramMember
1,000,000us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= mar_StockOptionProgramAndStockAppreciationRightProgramMember