Long-term Incentive Plan (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Mar. 21, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized					155,000	92,000
Allocated Share-based Compensation Expense	$ 2,213,000	$ 5,990,000	$ 10,567,000	$ 15,567,000
Trading Days					20
Share-Based Compensation Arrangements by Share Based Payment Award, Equity Instruments Other than options vested in period	84,500
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	3,300,000		3,300,000
Omnibus Stock Incentive Plans, 2007 New LTIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	$ 1,300,000		$ 7,800,000
Common Stock [Member] | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plan	20 months
Performance-Based Awards [Member] | Restricted Stock [Member] | Churchill 2004 and 2007 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number					324,000