Net Interest and Other Financial Costs - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 9 Months Ended | 0 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | ||
---|---|---|---|---|---|---|---|---|
Sep. 30, 2013
|
Sep. 30, 2012
|
Sep. 30, 2013
|
Sep. 30, 2012
|
Mar. 27, 2013
2014 Senior Convertible Notes
|
Sep. 30, 2013
2014 Senior Convertible Notes
|
Sep. 30, 2012
Senior Notes Due Twenty Thirteen [Member]
|
Sep. 30, 2012
Senior Notes Due Twenty Thirteen [Member]
|
|
Interest Expense [Line Items] | ||||||||
Net foreign currency remeasurement gains/losses | $ 3 | $ 6 | $ 9 | $ 2 | ||||
Charge for guarantee in unconsolidated equity method investment during the period | 22 | 22 | ||||||
Charge associated with repurchases/redemptions of senior notes | 34 | 18 | 18 | |||||
Repurchased face amount of senior notes | $ 542 | $ 542 | $ 300 | $ 300 | ||||
Senior notes stated interest rate | 4.00% | |||||||
Debt instrument, due date | May 15, 2014 | Jun. 01, 2013 |