v2.4.0.6
Long Term Capital Lease Obligation (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Schedule of Capital Lease Obligations [Line Items]  
Gross capital lease obligations $ 1,342
Less imputed interest (50)
Present value of net minimum lease payments 1,292
Less current portion of capital lease obligation (555)
Total long-term capital lease obligations $ 737