Income Taxes (Details 5) $ in Millions	Sep. 25, 2015 USD ($)
Tax Carryforwards
Deferred Tax Assets, Tax Loss and Credit Carryforwards, Current Period Increase due to the Write-Down of Investments	$ 1,381
U.S. Federal
Tax Carryforwards
Tax credit carryforwards	194
Non-U.S. Jurisdictions
Tax Carryforwards
Net operating loss carryforwards (tax effected)	3,068
Capital loss carryforwards (tax effected)	45
No expiration date | U.S. Federal
Tax Carryforwards
Tax credit carryforwards	63
No expiration date | Non-U.S. Jurisdictions
Tax Carryforwards
Net operating loss carryforwards (tax effected)	3,005
Tax credit carryforwards	1
Capital loss carryforwards (tax effected)	38
Expiring through 2035 | U.S. Federal
Tax Carryforwards
Net operating loss carryforwards (tax effected)	1,363
Tax credit carryforwards	131
Expiring through 2035 | U.S. State
Tax Carryforwards
Net operating loss carryforwards (tax effected)	125
Expiring through 2035 | Non-U.S. Jurisdictions
Tax Carryforwards
Net operating loss carryforwards (tax effected)	63
Expiring through 2030 | U.S. State
Tax Carryforwards
Tax credit carryforwards	40
Expiring through 2020 | U.S. Federal
Tax Carryforwards
Capital loss carryforwards (tax effected)	20
Expiring through 2020 | Non-U.S. Jurisdictions
Tax Carryforwards
Capital loss carryforwards (tax effected)	$ 7