Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies Loans and Debentures (Details)

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Commitments and Contingencies Loans and Debentures (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Dec. 30, 2012
Total Loans and Debentures [Member]
Sep. 30, 2012
Total Loans and Debentures [Member]
Dec. 30, 2012
DoT loan [Member]
Dec. 30, 2012
Loans [Member]
Dec. 30, 2012
Debentures [Member]
Short-term Debt [Line Items]          
Payment made to India's Department of Telecommunications in March 2012     $ 81    
Carrying value and approximate fair value $ 1,000 $ 1,100 $ 75 $ 451 $ 513
Spread on variable interest rate     0.25% 0.25%  
Interest rate at end of period     10.25% 10.00% 10.25%
Maturity date     Dec. 01, 2014 May 31, 2014 Jun. 25, 2017
Issuance date         May 29, 2012
Earliest date to demand redemption         Jun. 25, 2013