|
Debt Outstanding (Parenthetical) (Detail)
|
Mar. 31, 2012
|
Dec. 31, 2011
|
|---|---|---|
|
Notes, 7.34%, due in installments through May 2014
|
||
| Debt, interest rate | 7.34% | 7.34% |
| Debt, maturity date | 2014-05 | 2014-05 |
|
Notes, 4.45%, due December 2014
|
||
| Debt, interest rate | 4.45% | 4.45% |
| Debt, maturity date | 2014-12 | 2014-12 |
|
Notes, 6.30%, due July 2017
|
||
| Debt, interest rate | 6.30% | 6.30% |
| Debt, maturity date | 2017-07 | 2017-07 |
|
Debentures, 6.90%, due July 2028
|
||
| Debt, interest rate | 6.90% | 6.90% |
| Debt, maturity date | 2028-07 | 2028-07 |
|
Notes, 7.00%, due July 2037
|
||
| Debt, interest rate | 7.00% | 7.00% |
| Debt, maturity date | 2037-07 | 2037-07 |