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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details) (USD $)
3 Months Ended 9 Months Ended
Mar. 31, 2014
Embedded_Derivative_Instruments
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2013
Mar. 31, 2014
Senior notes due 2020 [Member]
Dec. 31, 2013
Senior notes due 2020 [Member]
Nov. 19, 2010
Senior notes due 2020 [Member]
Derivative Instruments, Gain (Loss) [Line Items]              
Debt Instrument, Interest Rate, Stated Percentage         4.625%   4.625%
Debt Instrument, Face Amount           $ 600,000,000  
Derivative, Basis Spread on Variable Rate 2.298%            
Fair Value Hedges, Net 11,200,000     0      
Number of features considered to be embedded derivative instruments 2            
Minimum percentage of market price to calculated value of zero-coupon subordinated debt at which the entity is subject to contingent cash interest 120.00%            
Embedded derivative, fair value 0            
Embedded derivative, impact on condensed consolidated statements of operations $ 0 $ 0 $ 0