|
Other Long Term Liabilities - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
|
Dec. 31, 2011
|
|---|---|---|
| Other Liabilities [Line Items] | ||
| Tax reserves for tax contingencies, inclusive of accrued interest and penalties for U.S. and foreign income taxes | $ 336 | $ 266 |