Annual report pursuant to Section 13 and 15(d)

Derivative Financial Instruments (Asset and liability management) (Details Add Info)

v2.4.0.8
Derivative Financial Instruments (Asset and liability management) (Details Add Info) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Y
Additional information about the interest rate swaps used in companies Asset and Liability Management  
Notional Amount Of Interest Rate Derivatives $ 10,527,300
Average Maturity (years) 3.0
Fair Value 24,677
Weighted-Average Rate Receive 1.16%
Weighted-Average Rate Pay 0.37%
Asset conversion swaps - Receive Fixed - Generic [Member]
  
Additional information about the interest rate swaps used in companies Asset and Liability Management  
Notional Amount Of Interest Rate Derivatives 8,548,000
Average Maturity (years) 2.8
Fair Value (31,446)
Weighted-Average Rate Receive 0.93%
Weighted-Average Rate Pay 0.40%
Asset Conversion Swaps Pay Fixed Generic [Member]
  
Additional information about the interest rate swaps used in companies Asset and Liability Management  
Notional Amount Of Interest Rate Derivatives 0
Average Maturity (years) 0.0
Fair Value 0
Weighted-Average Rate Receive 0.00%
Weighted-Average Rate Pay 0.00%
Liability conversion swaps - Receive Fixed - Generic [Member]
  
Additional information about the interest rate swaps used in companies Asset and Liability Management  
Notional Amount Of Interest Rate Derivatives 1,979,300
Average Maturity (years) 3.7
Fair Value 56,123
Weighted-Average Rate Receive 2.14%
Weighted-Average Rate Pay 0.27%
Liability Conversion Swaps - Receive Fixed - Callable
  
Additional information about the interest rate swaps used in companies Asset and Liability Management  
Average Maturity (years) 0.0
Fair Value $ 0
Weighted-Average Rate Receive 0.00%
Weighted-Average Rate Pay 0.00%