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Carrying Amounts and Fair Values of Certain Assets (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 28, 2014
Dec. 29, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash equivalents, carrying amount $ 16,290us-gaap_CashEquivalentsAtCarryingValue $ 5,303us-gaap_CashEquivalentsAtCarryingValue
Restricted cash equivalents, carrying amount 93,121us-gaap_RestrictedCashAndCashEquivalents 93,608us-gaap_RestrictedCashAndCashEquivalents
Investments in marketable securities, carrying amount 4,586us-gaap_MarketableSecuritiesNoncurrent 3,269us-gaap_MarketableSecuritiesNoncurrent
Fair Value, Inputs, Level 1 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash equivalents, fair value 16,290us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
5,303us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
Restricted cash equivalents, fair value 93,121dpz_RestrictedCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
93,608dpz_RestrictedCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
Investments in marketable securities, carrying amount $ 4,586us-gaap_MarketableSecuritiesNoncurrent
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
$ 3,269us-gaap_MarketableSecuritiesNoncurrent
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member