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Cash Flow Information (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
| Schedule Of Condensed Consolidating Statement Of Cash Flows [Line Items] | |||
| Interest, net of amounts capitalized | $ 2,122 | $ 1,971 | $ 2,629 |