Income Taxes (Details 2) (U.S. federal [Member], USD $) In Millions, unless otherwise specified	Mar. 24, 2012
2004 - 2006 | Interest Expense [Member]
Income Tax Examination [Line Items]
Possible losses due to an IRS proposed adjustment to increase the taxable value of rights to intangibles transferred to foreign subsidiaries	$ 175
2004 - 2006 | Income Tax Expense (Benefit) [Member]
Income Tax Examination [Line Items]
Possible losses due to an IRS proposed adjustment to increase the taxable value of rights to intangibles transferred to foreign subsidiaries	700
2007 - 2011 | Interest Expense [Member]
Income Tax Examination [Line Items]
Possible losses due to an IRS proposed adjustment to increase the taxable value of rights to intangibles transferred to foreign subsidiaries	25
2007 - 2011 | Income Tax Expense (Benefit) [Member]
Income Tax Examination [Line Items]
Possible losses due to an IRS proposed adjustment to increase the taxable value of rights to intangibles transferred to foreign subsidiaries	$ 350