Fair Value Of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2014

Fair Value Of Financial Instruments [Abstract]

Fair Value Of Long-Term Debt

($ in thousands)	June 30, 2014				December 31, 2013
		Carrying				Carrying
		Amount		Fair Value		Amount		Fair Value
Long-term debt	$	7,650,833	$	8,419,064	$	7,873,667	$	8,191,744