v2.4.0.6

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

X

- 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

X

- 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