Other Employee Benefits (Tables)

12 Months Ended

Dec. 31, 2014

Defined Benefit Plan Disclosure [Line Items]

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

The components of net periodic benefit costs are as follows:

	Pension Benefits									Other Postretirement Benefits
	For the Years Ended December 31,									For the Years Ended December 31,
	2014			2013			2012			2014			2013			2012
Components of net periodic benefit cost:
Service cost	$	17,187		$	20,865		$	20,466		$	7,089		$	18,680		$	18,817
Interest cost	35,363			36,829			37,586			44,177			111,687			135,695
Expected return on plan assets	(51,400		)	(51,814		)	(46,157		)	—			—			—
Amortization of prior service (credits)	(1,217		)	(1,611		)	(1,630		)	(21,163		)	(30,552		)	(51,828		)
Recognized net actuarial loss	23,927			37,853			47,834			28,682			66,417			80,875
Curtailment gain	(549		)	(374		)	—			(35,633		)	(39,650		)	—
Settlement loss (gain)	29,095			39,482			—			—			(1,348,129		)	—
Net periodic benefit cost (credit)	$	52,406		$	81,230		$	58,099		$	23,152		$	(1,221,547	)	$	183,559

Long term disability [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

CONSOL Energy has a Long-Term Disability Plan available to all eligible full-time salaried employees. The benefits for this plan are based on a percentage of monthly earnings, offset by all other income benefits available to the disabled.

	For the Years Ended
	December 31,
	2014			2013			2012
Benefit cost (credit)	$	2,213		$	(687	)	$	6,122
Discount rate assumption used to determine net periodic benefit costs	3.53		%	3.04		%	3.62		%