Retirement Benefits (Tables)

6 Months Ended

Dec. 31, 2015

Pension Plans

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of Defined Benefit Plans Disclosures

Net pension benefit cost recognized included the following components:

	Three Months Ended						Six Months Ended
	December 31,						December 31,
	2015			2014			2015			2014
Service cost	$	23,406		$	24,583		$	47,519		$	49,657
Interest cost	45,663			44,305			91,734			90,798
Special termination cost	7,088			—			7,088			—
Expected return on plan assets	(55,566		)	(54,961		)	(111,215		)	(110,189		)
Amortization of prior service cost	1,669			1,927			3,738			4,597
Amortization of net actuarial loss	42,299			37,297			85,268			76,725
Amortization of initial net obligation	4			4			8			9
Net pension benefit cost	$	64,563		$	53,155		$	124,140		$	111,597