|
Fair Value of Short Term and Long Term Debt Excluding Capital Leases (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2013
|
Dec. 31, 2012
|
|---|---|---|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Short- and long-term debt | $ 93,591 | $ 51,987 |
|
Carrying Amount, Fair Value Disclosure | Excluding Capital Leases
|
||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Short- and long-term debt | 93,298 | 51,689 |
|
Fair Value, Fair Value Disclosure | Excluding Capital Leases
|
||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Short- and long-term debt | $ 103,527 | $ 61,552 |