Income Taxes (Details 2) (U.S. federal [Member], USD $) In Millions, unless otherwise specified	Mar. 23, 2013
2004 - 2006 | Interest Expense [Member]
Income Tax Examination [Line Items]
Possible losses due to proposed or expected IRS adjustments to increase the taxable value of rights to intangibles transferred to foreign subsidiaries	$ 230
2004 - 2006 | Income Tax Expense (Benefit) [Member]
Income Tax Examination [Line Items]
Possible losses due to proposed or expected IRS adjustments to increase the taxable value of rights to intangibles transferred to foreign subsidiaries	700
2007-2008 | Interest Expense [Member]
Income Tax Examination [Line Items]
Possible losses due to proposed or expected IRS adjustments to increase the taxable value of rights to intangibles transferred to foreign subsidiaries	35
2007-2008 | Income Tax Expense (Benefit) [Member]
Income Tax Examination [Line Items]
Possible losses due to proposed or expected IRS adjustments to increase the taxable value of rights to intangibles transferred to foreign subsidiaries	270
2009-2012 | Interest Expense [Member]
Income Tax Examination [Line Items]
Possible losses due to proposed or expected IRS adjustments to increase the taxable value of rights to intangibles transferred to foreign subsidiaries	5
2009-2012 | Income Tax Expense (Benefit) [Member]
Income Tax Examination [Line Items]
Possible losses due to proposed or expected IRS adjustments to increase the taxable value of rights to intangibles transferred to foreign subsidiaries	$ 130