Retirement Benefits (Tables)

6 Months Ended

Dec. 31, 2014

Pension Plans, Defined Benefit

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,
	2014			2013			2014			2013
Service cost	$	24,583		$	22,457		$	49,657		$	49,686
Interest cost	44,305			47,465			90,798			95,009
Expected return on plan assets	(54,961		)	(56,574		)	(110,189		)	(112,962		)
Amortization of prior service cost	1,927			2,204			4,597			5,894
Amortization of net actuarial loss	37,297			40,261			76,725			79,679
Amortization of initial net obligation	4			5			9			10
Net pension benefit cost	$	53,155		$	55,818		$	111,597		$	117,316

Other Postretirement Benefit Plans, Defined Benefit

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

Schedule of Defined Benefit Plans Disclosures

Net postretirement benefit cost recognized included the following components:

	Three Months Ended						Six Months Ended
	December 31,						December 31,
	2014			2013			2014			2013
Service cost	$	156		$	206		$	312		$	412
Interest cost	742			709			1,484			1,418
Amortization of prior service benefit	(31		)	(26		)	(62		)	(52		)
Amortization of net actuarial loss	251			350			502			700
Net postretirement benefit cost	$	1,118		$	1,239		$	2,236		$	2,478