Subsequent Events Debt repurchase terms (Tables) (Energy Segment [Member])

9 Months Ended

Sep. 30, 2012

Energy Segment [Member]

Subsequent Event [Line Items]

Debt Instrument, Repurchase Percentage of Principal Amount, excluding accrued and unpaid interest [Table Text Block]

Year	Percentage
2017	103.250%
2018	102.167%
2019	101.083%
2020 and thereafter	100.000%