Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies Long-Term Loans (Details)

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Commitments and Contingencies Long-Term Loans (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 25, 2012
Jun. 30, 2013
Loans [Member]
   
Debt Instrument [Line Items]    
Loans payable to banks   $ 415
Spread on variable interest rate   0.25%
Interest rate at end of period   9.75%
DoT loan [Member]
   
Debt Instrument [Line Items]    
Payment made to India's Department of Telecommunications (DoT) in March 2012 81  
Loans payable to banks   $ 69
Spread on variable interest rate   0.25%
Interest rate at end of period   9.50%