Quarterly report pursuant to Section 13 or 15(d)

Discontinued Operations (Details)

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Discontinued Operations (Details) (USD $)
3 Months Ended 9 Months Ended
Jun. 26, 2011
Jun. 27, 2010
Jun. 26, 2011
Jun. 27, 2010
Sep. 26, 2010
Notes to Financial Statements [Abstract]          
Date announced sale of spectrum licenses Dec. 20, 2010
Sale price of spectrum licenses $ 1,900,000,000   $ 1,900,000,000    
Carrying value of spectrum held for sale 746,000,000   746,000,000   0
Disposal Group, Not Discontinued Operation, Income Statement Disclosures [Abstract]          
Revenues 1,000,000 5,000,000 5,000,000 9,000,000  
Income (loss) from discontinued operations 1,000,000 (105,000,000) (502,000,000) (334,000,000)  
Income tax benefit 43,000,000 40,000,000 195,000,000 134,000,000  
Discontinued operations, net of income taxes 44,000,000 (65,000,000) (307,000,000) (200,000,000)  
Disposal Group, Including Discontinued Operation, Classified Balance Sheet Disclosures [Abstract]          
Current assets 8,000,000   8,000,000    
Property, plant and equipment, net 170,000,000   170,000,000    
Assets held for sale 746,000,000   746,000,000   0
Other assets 2,000,000   2,000,000    
Total assets 926,000,000   926,000,000    
Trade accounts payable 2,000,000   2,000,000    
Payroll and other benefits related liabilities 2,000,000   2,000,000    
Other current liabilities 88,000,000   88,000,000    
Other noncurrent liabilities 198,000,000   198,000,000    
Total liabilities $ 290,000,000   $ 290,000,000