USD ($) | USD ($) | Multi-currency uncommitted shelf facility, U.S. dollar denominated 1 [Member] | Multi-currency uncommitted shelf facility, U.S. dollar denominated 1 [Member] | Multi-currency uncommitted shelf facility, U.S. dollar denominated 2 [Member] | Multi-currency uncommitted shelf facility, U.S. dollar denominated 2 [Member] | Multi-currency uncommitted shelf facility, total U.S. dollar-denominated debt [Member] | Multi-Currency Uncommitted Shelf Facility, Japanese Yen Denominated 1 [Member] | Multi-Currency Uncommitted Shelf Facility, Japanese Yen Denominated 1 [Member] | Multi-Currency Uncommitted Shelf Facility, Japanese Yen Denominated 1 [Member] | Multi-Currency Uncommitted Shelf Facility, Japanese Yen Denominated 1 [Member] | Multi-Currency Uncommitted Shelf Facility, Japanese Yen Denominated 2 [Member] | Multi-Currency Uncommitted Shelf Facility, Japanese Yen Denominated 2 [Member] | Multi-Currency Uncommitted Shelf Facility, Japanese Yen Denominated 2 [Member] | Multi-Currency Uncommitted Shelf Facility, Japanese Yen Denominated 2 [Member] | Multi-Currency Uncommitted Shelf Facility, Japanese Yen Denominated 3 [Member] | Multi-Currency Uncommitted Shelf Facility, Japanese Yen Denominated 3 [Member] | Multi-Currency Uncommitted Shelf Facility, Japanese Yen Denominated 3 [Member] | Multi-Currency Uncommitted Shelf Facility, Japanese Yen Denominated 3 [Member] | Multi-Currency Uncommitted Shelf Facility, Japanese Yen Denominated 4 [Member] | Multi-Currency Uncommitted Shelf Facility, Japanese Yen Denominated 4 [Member] | Multi-Currency Uncommitted Shelf Facility, Japanese Yen Denominated 4 [Member] | Multi-Currency Uncommitted Shelf Facility, Japanese Yen Denominated 4 [Member] | Multi-currency uncommitted shelf facility, total Japanese yen-denominated debt [Member] | Multi-currency uncommitted shelf facility, Total [Member] | Multi-currency uncommitted shelf facility, Total [Member] | Revolving credit facility 2010 [Member] | Revolving credit facility 2010 [Member] | Revolving credit facility 2010 [Member] | Revolving credit facility 2010 [Member] | Revolving Credit facility 2013 [Member] | Revolving Credit facility 2013 [Member] | Revolving Credit Facility 2014 [Member] | Revolving Credit Facility 2014 [Member] | Revolving Line Of Credit 364 Day [Member] |
Repayment terms | ' | ' | 'Notes due July 2016 with annual principal payments that began in July 2010. | | ' | 'Notes due January 2017 with annual principal payments that began in January 2011. | | ' | ' | 'Notes paid in full on April 30, 2014 | 'Notes paid in full on April 30, 2014 | | ' | | ' | 'Notes due September 2017 with annual principal payments that began in September 2011. | 'Notes due September 2017 with annual principal payments that began in September 2011. | | ' | ' | 'Notes due January 2017 with annual principal payments that began in January 2011. | 'Notes due January 2017 with annual principal payments that began in January 2011. | | ' | ' | 'Notes due May 2022 with annual principal payments that begin in May 2016. | | 'Notes due May 2022 with annual principal payments that begin in May 2016. | | ' | ' | ' | ' | ' | 'Revolving line of credit expired August 8, 2014. | [2] | ' | ' | ' | 'Revolving line of credit expires September 2014. | [2] | ' | 'Revolving line of credit expires April 2015. | | ' | ' |