v2.4.0.6

Changes in Equity - Summary of Changes in Total Equity (Parenthetical) (Detail) (USD $) | Sep. 29, 2012
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Changes In Equity [Line Items] |
Other comprehensive loss, net of tax | $ 2
Dividends declared per common share | $ 0.08

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- Definition Accumulated Other Comprehensive Income Loss Income Taxes + References No definition available. + Details
Name: | dfz_AccumulatedOtherComprehensiveIncomeLossIncomeTaxes
Namespace Prefix: | dfz_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | dfz_ChangesInEquityLineItems
Namespace Prefix: | dfz_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Common Stock Dividend Per Share Declared + References No definition available. + Details
Name: | dfz_CommonStockDividendPerShareDeclared
Namespace Prefix: | dfz_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant