Long-Term Debt (Redemption Price) (Details) (Unsecured Debt [Member])	Dec. 31, 2012
Period from November 30, 2015 to November 29, 2016
Future Redemption Price of Debt During Eligibility Period, as a Percentage of Principal Amount	104.219%
Period from November 30, 2016 to November 29, 2017
Future Redemption Price of Debt During Eligibility Period, as a Percentage of Principal Amount	102.813%
Period from November 30, 2017 to November 29, 2018
Future Redemption Price of Debt During Eligibility Period, as a Percentage of Principal Amount	101.406%
Period from November 30, 2018 to November 30, 2020
Future Redemption Price of Debt During Eligibility Period, as a Percentage of Principal Amount	100.00%